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openssl/test/ectest.c

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/*
* Copyright 2001-2021 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "internal/nelem.h"
#include "testutil.h"
#ifndef OPENSSL_NO_EC
# include <openssl/ec.h>
# ifndef OPENSSL_NO_ENGINE
# include <openssl/engine.h>
# endif
# include <openssl/err.h>
# include <openssl/obj_mac.h>
# include <openssl/objects.h>
# include <openssl/rand.h>
# include <openssl/bn.h>
# include <openssl/opensslconf.h>
static size_t crv_len = 0;
static EC_builtin_curve *curves = NULL;
/* test multiplication with group order, long and negative scalars */
static int group_order_tests(EC_GROUP *group)
{
BIGNUM *n1 = NULL, *n2 = NULL, *order = NULL;
EC_POINT *P = NULL, *Q = NULL, *R = NULL, *S = NULL;
const EC_POINT *G = NULL;
BN_CTX *ctx = NULL;
int i = 0, r = 0;
if (!TEST_ptr(n1 = BN_new())
|| !TEST_ptr(n2 = BN_new())
|| !TEST_ptr(order = BN_new())
|| !TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(G = EC_GROUP_get0_generator(group))
|| !TEST_ptr(P = EC_POINT_new(group))
|| !TEST_ptr(Q = EC_POINT_new(group))
|| !TEST_ptr(R = EC_POINT_new(group))
|| !TEST_ptr(S = EC_POINT_new(group)))
goto err;
if (!TEST_true(EC_GROUP_get_order(group, order, ctx))
|| !TEST_true(EC_POINT_mul(group, Q, order, NULL, NULL, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, Q))
|| !TEST_true(EC_GROUP_precompute_mult(group, ctx))
|| !TEST_true(EC_POINT_mul(group, Q, order, NULL, NULL, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, Q))
|| !TEST_true(EC_POINT_copy(P, G))
|| !TEST_true(BN_one(n1))
|| !TEST_true(EC_POINT_mul(group, Q, n1, NULL, NULL, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx))
|| !TEST_true(BN_sub(n1, order, n1))
|| !TEST_true(EC_POINT_mul(group, Q, n1, NULL, NULL, ctx))
|| !TEST_true(EC_POINT_invert(group, Q, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx)))
goto err;
for (i = 1; i <= 2; i++) {
const BIGNUM *scalars[6];
const EC_POINT *points[6];
if (!TEST_true(BN_set_word(n1, i))
/*
* If i == 1, P will be the predefined generator for which
* EC_GROUP_precompute_mult has set up precomputation.
*/
|| !TEST_true(EC_POINT_mul(group, P, n1, NULL, NULL, ctx))
|| (i == 1 && !TEST_int_eq(0, EC_POINT_cmp(group, P, G, ctx)))
|| !TEST_true(BN_one(n1))
/* n1 = 1 - order */
|| !TEST_true(BN_sub(n1, n1, order))
|| !TEST_true(EC_POINT_mul(group, Q, NULL, P, n1, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx))
/* n2 = 1 + order */
|| !TEST_true(BN_add(n2, order, BN_value_one()))
|| !TEST_true(EC_POINT_mul(group, Q, NULL, P, n2, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx))
/* n2 = (1 - order) * (1 + order) = 1 - order^2 */
|| !TEST_true(BN_mul(n2, n1, n2, ctx))
|| !TEST_true(EC_POINT_mul(group, Q, NULL, P, n2, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx)))
goto err;
/* n2 = order^2 - 1 */
BN_set_negative(n2, 0);
if (!TEST_true(EC_POINT_mul(group, Q, NULL, P, n2, ctx))
/* Add P to verify the result. */
|| !TEST_true(EC_POINT_add(group, Q, Q, P, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, Q))
/* Exercise EC_POINTs_mul, including corner cases. */
|| !TEST_false(EC_POINT_is_at_infinity(group, P)))
goto err;
scalars[0] = scalars[1] = BN_value_one();
points[0] = points[1] = P;
if (!TEST_true(EC_POINTs_mul(group, R, NULL, 2, points, scalars, ctx))
|| !TEST_true(EC_POINT_dbl(group, S, points[0], ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, R, S, ctx)))
goto err;
scalars[0] = n1;
points[0] = Q; /* => infinity */
scalars[1] = n2;
points[1] = P; /* => -P */
scalars[2] = n1;
points[2] = Q; /* => infinity */
scalars[3] = n2;
points[3] = Q; /* => infinity */
scalars[4] = n1;
points[4] = P; /* => P */
scalars[5] = n2;
points[5] = Q; /* => infinity */
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 6, points, scalars, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P)))
goto err;
}
r = 1;
err:
if (r == 0 && i != 0)
TEST_info(i == 1 ? "allowing precomputation" :
"without precomputation");
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(R);
EC_POINT_free(S);
BN_free(n1);
BN_free(n2);
BN_free(order);
BN_CTX_free(ctx);
return r;
}
static int prime_field_tests(void)
{
BN_CTX *ctx = NULL;
BIGNUM *p = NULL, *a = NULL, *b = NULL, *scalar3 = NULL;
EC_GROUP *group = NULL, *tmp = NULL;
EC_GROUP *P_160 = NULL, *P_192 = NULL, *P_224 = NULL,
*P_256 = NULL, *P_384 = NULL, *P_521 = NULL;
EC_POINT *P = NULL, *Q = NULL, *R = NULL;
BIGNUM *x = NULL, *y = NULL, *z = NULL, *yplusone = NULL;
const EC_POINT *points[4];
const BIGNUM *scalars[4];
unsigned char buf[100];
size_t len, r = 0;
int k;
if (!TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(p = BN_new())
|| !TEST_ptr(a = BN_new())
|| !TEST_ptr(b = BN_new())
|| !TEST_true(BN_hex2bn(&p, "17"))
|| !TEST_true(BN_hex2bn(&a, "1"))
|| !TEST_true(BN_hex2bn(&b, "1"))
/*
* applications should use EC_GROUP_new_curve_GFp so
* that the library gets to choose the EC_METHOD
*/
|| !TEST_ptr(group = EC_GROUP_new(EC_GFp_mont_method()))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_ptr(tmp = EC_GROUP_new(EC_GROUP_method_of(group)))
|| !TEST_true(EC_GROUP_copy(tmp, group)))
goto err;
EC_GROUP_free(group);
group = tmp;
tmp = NULL;
if (!TEST_true(EC_GROUP_get_curve(group, p, a, b, ctx)))
goto err;
TEST_info("Curve defined by Weierstrass equation");
TEST_note(" y^2 = x^3 + a*x + b (mod p)");
test_output_bignum("a", a);
test_output_bignum("b", b);
test_output_bignum("p", p);
buf[0] = 0;
if (!TEST_ptr(P = EC_POINT_new(group))
|| !TEST_ptr(Q = EC_POINT_new(group))
|| !TEST_ptr(R = EC_POINT_new(group))
|| !TEST_true(EC_POINT_set_to_infinity(group, P))
|| !TEST_true(EC_POINT_is_at_infinity(group, P))
|| !TEST_true(EC_POINT_oct2point(group, Q, buf, 1, ctx))
|| !TEST_true(EC_POINT_add(group, P, P, Q, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P))
|| !TEST_ptr(x = BN_new())
|| !TEST_ptr(y = BN_new())
|| !TEST_ptr(z = BN_new())
|| !TEST_ptr(yplusone = BN_new())
|| !TEST_true(BN_hex2bn(&x, "D"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, Q, x, 1, ctx)))
goto err;
if (!TEST_int_gt(EC_POINT_is_on_curve(group, Q, ctx), 0)) {
if (!TEST_true(EC_POINT_get_affine_coordinates(group, Q, x, y, ctx)))
goto err;
TEST_info("Point is not on curve");
test_output_bignum("x", x);
test_output_bignum("y", y);
goto err;
}
TEST_note("A cyclic subgroup:");
k = 100;
do {
if (!TEST_int_ne(k--, 0))
goto err;
if (EC_POINT_is_at_infinity(group, P)) {
TEST_note(" point at infinity");
} else {
if (!TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y,
ctx)))
goto err;
test_output_bignum("x", x);
test_output_bignum("y", y);
}
if (!TEST_true(EC_POINT_copy(R, P))
|| !TEST_true(EC_POINT_add(group, P, P, Q, ctx)))
goto err;
} while (!EC_POINT_is_at_infinity(group, P));
if (!TEST_true(EC_POINT_add(group, P, Q, R, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P)))
goto err;
len =
EC_POINT_point2oct(group, Q, POINT_CONVERSION_COMPRESSED, buf,
sizeof(buf), ctx);
if (!TEST_size_t_ne(len, 0)
|| !TEST_true(EC_POINT_oct2point(group, P, buf, len, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, Q, ctx)))
goto err;
test_output_memory("Generator as octet string, compressed form:",
buf, len);
len = EC_POINT_point2oct(group, Q, POINT_CONVERSION_UNCOMPRESSED,
buf, sizeof(buf), ctx);
if (!TEST_size_t_ne(len, 0)
|| !TEST_true(EC_POINT_oct2point(group, P, buf, len, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, Q, ctx)))
goto err;
test_output_memory("Generator as octet string, uncompressed form:",
buf, len);
len = EC_POINT_point2oct(group, Q, POINT_CONVERSION_HYBRID,
buf, sizeof(buf), ctx);
if (!TEST_size_t_ne(len, 0)
|| !TEST_true(EC_POINT_oct2point(group, P, buf, len, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, Q, ctx)))
goto err;
test_output_memory("Generator as octet string, hybrid form:",
buf, len);
if (!TEST_true(EC_POINT_get_Jprojective_coordinates_GFp(group, R, x, y, z,
ctx)))
goto err;
TEST_info("A representation of the inverse of that generator in");
TEST_note("Jacobian projective coordinates");
test_output_bignum("x", x);
test_output_bignum("y", y);
test_output_bignum("z", z);
if (!TEST_true(EC_POINT_invert(group, P, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, R, ctx))
/*
* Curve secp160r1 (Certicom Research SEC 2 Version 1.0, section 2.4.2,
* 2000) -- not a NIST curve, but commonly used
*/
|| !TEST_true(BN_hex2bn(&p, "FFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFF"))
|| !TEST_int_eq(1, BN_is_prime_ex(p, BN_prime_checks, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "FFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFC"))
|| !TEST_true(BN_hex2bn(&b, "1C97BEFC"
"54BD7A8B65ACF89F81D4D4ADC565FA45"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "4A96B568"
"8EF573284664698968C38BB913CBFC82"))
|| !TEST_true(BN_hex2bn(&y, "23a62855"
"3168947d59dcc912042351377ac5fb32"))
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_true(EC_POINT_set_affine_coordinates(group, P, x, y, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "0100000000"
"000000000001F4C8F927AED3CA752257"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("SEC2 curve secp160r1 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "23a62855"
"3168947d59dcc912042351377ac5fb32"))
|| !TEST_BN_eq(y, z)
|| !TEST_int_eq(EC_GROUP_get_degree(group), 160)
|| !group_order_tests(group)
|| !TEST_ptr(P_160 = EC_GROUP_new(EC_GROUP_method_of(group)))
|| !TEST_true(EC_GROUP_copy(P_160, group))
/* Curve P-192 (FIPS PUB 186-2, App. 6) */
|| !TEST_true(BN_hex2bn(&p, "FFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF"))
|| !TEST_int_eq(1, BN_is_prime_ex(p, BN_prime_checks, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "FFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC"))
|| !TEST_true(BN_hex2bn(&b, "64210519E59C80E7"
"0FA7E9AB72243049FEB8DEECC146B9B1"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "188DA80EB03090F6"
"7CBF20EB43A18800F4FF0AFD82FF1012"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x, 1, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "FFFFFFFFFFFFFFFF"
"FFFFFFFF99DEF836146BC9B1B4D22831"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("NIST curve P-192 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "07192B95FFC8DA78"
"631011ED6B24CDD573F977A11E794811"))
|| !TEST_BN_eq(y, z)
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_int_eq(EC_GROUP_get_degree(group), 192)
|| !group_order_tests(group)
|| !TEST_ptr(P_192 = EC_GROUP_new(EC_GROUP_method_of(group)))
|| !TEST_true(EC_GROUP_copy(P_192, group))
/* Curve P-224 (FIPS PUB 186-2, App. 6) */
|| !TEST_true(BN_hex2bn(&p, "FFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFF000000000000000000000001"))
|| !TEST_int_eq(1, BN_is_prime_ex(p, BN_prime_checks, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "FFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE"))
|| !TEST_true(BN_hex2bn(&b, "B4050A850C04B3ABF5413256"
"5044B0B7D7BFD8BA270B39432355FFB4"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "B70E0CBD6BB4BF7F321390B9"
"4A03C1D356C21122343280D6115C1D21"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x, 0, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "FFFFFFFFFFFFFFFFFFFFFFFF"
"FFFF16A2E0B8F03E13DD29455C5C2A3D"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("NIST curve P-224 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "BD376388B5F723FB4C22DFE6"
"CD4375A05A07476444D5819985007E34"))
|| !TEST_BN_eq(y, z)
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_int_eq(EC_GROUP_get_degree(group), 224)
|| !group_order_tests(group)
|| !TEST_ptr(P_224 = EC_GROUP_new(EC_GROUP_method_of(group)))
|| !TEST_true(EC_GROUP_copy(P_224, group))
/* Curve P-256 (FIPS PUB 186-2, App. 6) */
|| !TEST_true(BN_hex2bn(&p, "FFFFFFFF000000010000000000000000"
"00000000FFFFFFFFFFFFFFFFFFFFFFFF"))
|| !TEST_int_eq(1, BN_is_prime_ex(p, BN_prime_checks, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "FFFFFFFF000000010000000000000000"
"00000000FFFFFFFFFFFFFFFFFFFFFFFC"))
|| !TEST_true(BN_hex2bn(&b, "5AC635D8AA3A93E7B3EBBD55769886BC"
"651D06B0CC53B0F63BCE3C3E27D2604B"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "6B17D1F2E12C4247F8BCE6E563A440F2"
"77037D812DEB33A0F4A13945D898C296"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x, 1, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "FFFFFFFF00000000FFFFFFFFFFFFFFFF"
"BCE6FAADA7179E84F3B9CAC2FC632551"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("NIST curve P-256 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "4FE342E2FE1A7F9B8EE7EB4A7C0F9E16"
"2BCE33576B315ECECBB6406837BF51F5"))
|| !TEST_BN_eq(y, z)
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_int_eq(EC_GROUP_get_degree(group), 256)
|| !group_order_tests(group)
|| !TEST_ptr(P_256 = EC_GROUP_new(EC_GROUP_method_of(group)))
|| !TEST_true(EC_GROUP_copy(P_256, group))
/* Curve P-384 (FIPS PUB 186-2, App. 6) */
|| !TEST_true(BN_hex2bn(&p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE"
"FFFFFFFF0000000000000000FFFFFFFF"))
|| !TEST_int_eq(1, BN_is_prime_ex(p, BN_prime_checks, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE"
"FFFFFFFF0000000000000000FFFFFFFC"))
|| !TEST_true(BN_hex2bn(&b, "B3312FA7E23EE7E4988E056BE3F82D19"
"181D9C6EFE8141120314088F5013875A"
"C656398D8A2ED19D2A85C8EDD3EC2AEF"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "AA87CA22BE8B05378EB1C71EF320AD74"
"6E1D3B628BA79B9859F741E082542A38"
"5502F25DBF55296C3A545E3872760AB7"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x, 1, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFC7634D81F4372DDF"
"581A0DB248B0A77AECEC196ACCC52973"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("NIST curve P-384 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "3617DE4A96262C6F5D9E98BF9292DC29"
"F8F41DBD289A147CE9DA3113B5F0B8C0"
"0A60B1CE1D7E819D7A431D7C90EA0E5F"))
|| !TEST_BN_eq(y, z)
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_int_eq(EC_GROUP_get_degree(group), 384)
|| !group_order_tests(group)
|| !TEST_ptr(P_384 = EC_GROUP_new(EC_GROUP_method_of(group)))
|| !TEST_true(EC_GROUP_copy(P_384, group))
/* Curve P-521 (FIPS PUB 186-2, App. 6) */
|| !TEST_true(BN_hex2bn(&p, "1FF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"))
|| !TEST_int_eq(1, BN_is_prime_ex(p, BN_prime_checks, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, "1FF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC"))
|| !TEST_true(BN_hex2bn(&b, "051"
"953EB9618E1C9A1F929A21A0B68540EE"
"A2DA725B99B315F3B8B489918EF109E1"
"56193951EC7E937B1652C0BD3BB1BF07"
"3573DF883D2C34F1EF451FD46B503F00"))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_true(BN_hex2bn(&x, "C6"
"858E06B70404E9CD9E3ECB662395B442"
"9C648139053FB521F828AF606B4D3DBA"
"A14B5E77EFE75928FE1DC127A2FFA8DE"
"3348B3C1856A429BF97E7E31C2E5BD66"))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x, 0, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, "1FF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA"
"51868783BF2F966B7FCC0148F709A5D0"
"3BB5C9B8899C47AEBB6FB71E91386409"))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, BN_value_one()))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("NIST curve P-521 -- Generator");
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, "118"
"39296A789A3BC0045C8A5FB42C7D1BD9"
"98F54449579B446817AFBD17273E662C"
"97EE72995EF42640C550B9013FAD0761"
"353C7086A272C24088BE94769FD16650"))
|| !TEST_BN_eq(y, z)
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone,
ctx))
|| !TEST_int_eq(EC_GROUP_get_degree(group), 521)
|| !group_order_tests(group)
|| !TEST_ptr(P_521 = EC_GROUP_new(EC_GROUP_method_of(group)))
|| !TEST_true(EC_GROUP_copy(P_521, group))
/* more tests using the last curve */
/* Restore the point that got mangled in the (x, y + 1) test. */
|| !TEST_true(EC_POINT_set_affine_coordinates(group, P, x, y, ctx))
|| !TEST_true(EC_POINT_copy(Q, P))
|| !TEST_false(EC_POINT_is_at_infinity(group, Q))
|| !TEST_true(EC_POINT_dbl(group, P, P, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(EC_POINT_invert(group, Q, ctx)) /* P = -2Q */
|| !TEST_true(EC_POINT_add(group, R, P, Q, ctx))
|| !TEST_true(EC_POINT_add(group, R, R, Q, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, R)) /* R = P + 2Q */
|| !TEST_false(EC_POINT_is_at_infinity(group, Q)))
goto err;
points[0] = Q;
points[1] = Q;
points[2] = Q;
points[3] = Q;
if (!TEST_true(EC_GROUP_get_order(group, z, ctx))
|| !TEST_true(BN_add(y, z, BN_value_one()))
|| !TEST_BN_even(y)
|| !TEST_true(BN_rshift1(y, y)))
goto err;
scalars[0] = y; /* (group order + 1)/2, so y*Q + y*Q = Q */
scalars[1] = y;
TEST_note("combined multiplication ...");
/* z is still the group order */
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 2, points, scalars, ctx))
|| !TEST_true(EC_POINTs_mul(group, R, z, 2, points, scalars, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, R, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, R, Q, ctx))
|| !TEST_true(BN_rand(y, BN_num_bits(y), 0, 0))
|| !TEST_true(BN_add(z, z, y)))
goto err;
BN_set_negative(z, 1);
scalars[0] = y;
scalars[1] = z; /* z = -(order + y) */
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 2, points, scalars, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P))
|| !TEST_true(BN_rand(x, BN_num_bits(y) - 1, 0, 0))
|| !TEST_true(BN_add(z, x, y)))
goto err;
BN_set_negative(z, 1);
scalars[0] = x;
scalars[1] = y;
scalars[2] = z; /* z = -(x+y) */
if (!TEST_ptr(scalar3 = BN_new()))
goto err;
BN_zero(scalar3);
scalars[3] = scalar3;
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 4, points, scalars, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P)))
goto err;
TEST_note(" ok\n");
r = 1;
err:
BN_CTX_free(ctx);
BN_free(p);
BN_free(a);
BN_free(b);
EC_GROUP_free(group);
EC_GROUP_free(tmp);
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(R);
BN_free(x);
BN_free(y);
BN_free(z);
BN_free(yplusone);
BN_free(scalar3);
EC_GROUP_free(P_160);
EC_GROUP_free(P_192);
EC_GROUP_free(P_224);
EC_GROUP_free(P_256);
EC_GROUP_free(P_384);
EC_GROUP_free(P_521);
return r;
}
# ifndef OPENSSL_NO_EC2M
static struct c2_curve_test {
const char *name;
const char *p;
const char *a;
const char *b;
const char *x;
const char *y;
int ybit;
const char *order;
const char *cof;
int degree;
} char2_curve_tests[] = {
/* Curve K-163 (FIPS PUB 186-2, App. 6) */
{
"NIST curve K-163",
"0800000000000000000000000000000000000000C9",
"1",
"1",
"02FE13C0537BBC11ACAA07D793DE4E6D5E5C94EEE8",
"0289070FB05D38FF58321F2E800536D538CCDAA3D9",
1, "04000000000000000000020108A2E0CC0D99F8A5EF", "2", 163
},
/* Curve B-163 (FIPS PUB 186-2, App. 6) */
{
"NIST curve B-163",
"0800000000000000000000000000000000000000C9",
"1",
"020A601907B8C953CA1481EB10512F78744A3205FD",
"03F0EBA16286A2D57EA0991168D4994637E8343E36",
"00D51FBC6C71A0094FA2CDD545B11C5C0C797324F1",
1, "040000000000000000000292FE77E70C12A4234C33", "2", 163
},
/* Curve K-233 (FIPS PUB 186-2, App. 6) */
{
"NIST curve K-233",
"020000000000000000000000000000000000000004000000000000000001",
"0",
"1",
"017232BA853A7E731AF129F22FF4149563A419C26BF50A4C9D6EEFAD6126",
"01DB537DECE819B7F70F555A67C427A8CD9BF18AEB9B56E0C11056FAE6A3",
0,
"008000000000000000000000000000069D5BB915BCD46EFB1AD5F173ABDF",
"4", 233
},
/* Curve B-233 (FIPS PUB 186-2, App. 6) */
{
"NIST curve B-233",
"020000000000000000000000000000000000000004000000000000000001",
"000000000000000000000000000000000000000000000000000000000001",
"0066647EDE6C332C7F8C0923BB58213B333B20E9CE4281FE115F7D8F90AD",
"00FAC9DFCBAC8313BB2139F1BB755FEF65BC391F8B36F8F8EB7371FD558B",
"01006A08A41903350678E58528BEBF8A0BEFF867A7CA36716F7E01F81052",
1,
"01000000000000000000000000000013E974E72F8A6922031D2603CFE0D7",
"2", 233
},
/* Curve K-283 (FIPS PUB 186-2, App. 6) */
{
"NIST curve K-283",
"08000000"
"00000000000000000000000000000000000000000000000000000000000010A1",
"0",
"1",
"0503213F"
"78CA44883F1A3B8162F188E553CD265F23C1567A16876913B0C2AC2458492836",
"01CCDA38"
"0F1C9E318D90F95D07E5426FE87E45C0E8184698E45962364E34116177DD2259",
0,
"01FFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFE9AE2ED07577265DFF7F94451E061E163C61",
"4", 283
},
/* Curve B-283 (FIPS PUB 186-2, App. 6) */
{
"NIST curve B-283",
"08000000"
"00000000000000000000000000000000000000000000000000000000000010A1",
"00000000"
"0000000000000000000000000000000000000000000000000000000000000001",
"027B680A"
"C8B8596DA5A4AF8A19A0303FCA97FD7645309FA2A581485AF6263E313B79A2F5",
"05F93925"
"8DB7DD90E1934F8C70B0DFEC2EED25B8557EAC9C80E2E198F8CDBECD86B12053",
"03676854"
"FE24141CB98FE6D4B20D02B4516FF702350EDDB0826779C813F0DF45BE8112F4",
1,
"03FFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFEF90399660FC938A90165B042A7CEFADB307",
"2", 283
},
/* Curve K-409 (FIPS PUB 186-2, App. 6) */
{
"NIST curve K-409",
"0200000000000000000000000000000000000000"
"0000000000000000000000000000000000000000008000000000000000000001",
"0",
"1",
"0060F05F658F49C1AD3AB1890F7184210EFD0987"
"E307C84C27ACCFB8F9F67CC2C460189EB5AAAA62EE222EB1B35540CFE9023746",
"01E369050B7C4E42ACBA1DACBF04299C3460782F"
"918EA427E6325165E9EA10E3DA5F6C42E9C55215AA9CA27A5863EC48D8E0286B",
1,
"007FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFE5F83B2D4EA20400EC4557D5ED3E3E7CA5B4B5C83B8E01E5FCF",
"4", 409
},
/* Curve B-409 (FIPS PUB 186-2, App. 6) */
{
"NIST curve B-409",
"0200000000000000000000000000000000000000"
"0000000000000000000000000000000000000000008000000000000000000001",
"0000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000001",
"0021A5C2C8EE9FEB5C4B9A753B7B476B7FD6422E"
"F1F3DD674761FA99D6AC27C8A9A197B272822F6CD57A55AA4F50AE317B13545F",
"015D4860D088DDB3496B0C6064756260441CDE4A"
"F1771D4DB01FFE5B34E59703DC255A868A1180515603AEAB60794E54BB7996A7",
"0061B1CFAB6BE5F32BBFA78324ED106A7636B9C5"
"A7BD198D0158AA4F5488D08F38514F1FDF4B4F40D2181B3681C364BA0273C706",
1,
"0100000000000000000000000000000000000000"
"00000000000001E2AAD6A612F33307BE5FA47C3C9E052F838164CD37D9A21173",
"2", 409
},
/* Curve K-571 (FIPS PUB 186-2, App. 6) */
{
"NIST curve K-571",
"800000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000425",
"0",
"1",
"026EB7A859923FBC"
"82189631F8103FE4AC9CA2970012D5D46024804801841CA44370958493B205E6"
"47DA304DB4CEB08CBBD1BA39494776FB988B47174DCA88C7E2945283A01C8972",
"0349DC807F4FBF37"
"4F4AEADE3BCA95314DD58CEC9F307A54FFC61EFC006D8A2C9D4979C0AC44AEA7"
"4FBEBBB9F772AEDCB620B01A7BA7AF1B320430C8591984F601CD4C143EF1C7A3",
0,
"0200000000000000"
"00000000000000000000000000000000000000000000000000000000131850E1"
"F19A63E4B391A8DB917F4138B630D84BE5D639381E91DEB45CFE778F637C1001",
"4", 571
},
/* Curve B-571 (FIPS PUB 186-2, App. 6) */
{
"NIST curve B-571",
"800000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000425",
"0000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000001",
"02F40E7E2221F295"
"DE297117B7F3D62F5C6A97FFCB8CEFF1CD6BA8CE4A9A18AD84FFABBD8EFA5933"
"2BE7AD6756A66E294AFD185A78FF12AA520E4DE739BACA0C7FFEFF7F2955727A",
"0303001D34B85629"
"6C16C0D40D3CD7750A93D1D2955FA80AA5F40FC8DB7B2ABDBDE53950F4C0D293"
"CDD711A35B67FB1499AE60038614F1394ABFA3B4C850D927E1E7769C8EEC2D19",
"037BF27342DA639B"
"6DCCFFFEB73D69D78C6C27A6009CBBCA1980F8533921E8A684423E43BAB08A57"
"6291AF8F461BB2A8B3531D2F0485C19B16E2F1516E23DD3C1A4827AF1B8AC15B",
1,
"03FFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE661CE18"
"FF55987308059B186823851EC7DD9CA1161DE93D5174D66E8382E9BB2FE84E47",
"2", 571
}
};
static int char2_curve_test(int n)
{
int r = 0;
BN_CTX *ctx = NULL;
BIGNUM *p = NULL, *a = NULL, *b = NULL;
BIGNUM *x = NULL, *y = NULL, *z = NULL, *cof = NULL, *yplusone = NULL;
EC_GROUP *group = NULL, *variable = NULL;
EC_POINT *P = NULL, *Q = NULL, *R = NULL;
const EC_POINT *points[3];
const BIGNUM *scalars[3];
struct c2_curve_test *const test = char2_curve_tests + n;
if (!TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(p = BN_new())
|| !TEST_ptr(a = BN_new())
|| !TEST_ptr(b = BN_new())
|| !TEST_ptr(x = BN_new())
|| !TEST_ptr(y = BN_new())
|| !TEST_ptr(z = BN_new())
|| !TEST_ptr(yplusone = BN_new())
|| !TEST_true(BN_hex2bn(&p, test->p))
|| !TEST_true(BN_hex2bn(&a, test->a))
|| !TEST_true(BN_hex2bn(&b, test->b))
|| !TEST_true(group = EC_GROUP_new(EC_GF2m_simple_method()))
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_ptr(P = EC_POINT_new(group))
|| !TEST_ptr(Q = EC_POINT_new(group))
|| !TEST_ptr(R = EC_POINT_new(group))
|| !TEST_true(BN_hex2bn(&x, test->x))
|| !TEST_true(BN_hex2bn(&y, test->y))
|| !TEST_true(BN_add(yplusone, y, BN_value_one())))
goto err;
/* Change test based on whether binary point compression is enabled or not. */
# ifdef OPENSSL_EC_BIN_PT_COMP
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
if (!TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone, ctx))
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, P, x,
test->y_bit,
ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, test->order))
|| !TEST_true(BN_hex2bn(&cof, test->cof))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, cof))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y, ctx)))
goto err;
TEST_info("%s -- Generator", test->name);
test_output_bignum("x", x);
test_output_bignum("y", y);
/* G_y value taken from the standard: */
if (!TEST_true(BN_hex2bn(&z, test->y))
|| !TEST_BN_eq(y, z))
goto err;
# else
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
if (!TEST_false(EC_POINT_set_affine_coordinates(group, P, x, yplusone, ctx))
|| !TEST_true(EC_POINT_set_affine_coordinates(group, P, x, y, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(BN_hex2bn(&z, test->order))
|| !TEST_true(BN_hex2bn(&cof, test->cof))
|| !TEST_true(EC_GROUP_set_generator(group, P, z, cof)))
goto err;
TEST_info("%s -- Generator:", test->name);
test_output_bignum("x", x);
test_output_bignum("y", y);
# endif
if (!TEST_int_eq(EC_GROUP_get_degree(group), test->degree)
|| !group_order_tests(group)
|| !TEST_ptr(variable = EC_GROUP_new(EC_GROUP_method_of(group)))
|| !TEST_true(EC_GROUP_copy(variable, group)))
goto err;
/* more tests using the last curve */
if (n == OSSL_NELEM(char2_curve_tests) - 1) {
if (!TEST_true(EC_POINT_set_affine_coordinates(group, P, x, y, ctx))
|| !TEST_true(EC_POINT_copy(Q, P))
|| !TEST_false(EC_POINT_is_at_infinity(group, Q))
|| !TEST_true(EC_POINT_dbl(group, P, P, ctx))
|| !TEST_int_gt(EC_POINT_is_on_curve(group, P, ctx), 0)
|| !TEST_true(EC_POINT_invert(group, Q, ctx)) /* P = -2Q */
|| !TEST_true(EC_POINT_add(group, R, P, Q, ctx))
|| !TEST_true(EC_POINT_add(group, R, R, Q, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, R)) /* R = P + 2Q */
|| !TEST_false(EC_POINT_is_at_infinity(group, Q)))
goto err;
points[0] = Q;
points[1] = Q;
points[2] = Q;
if (!TEST_true(BN_add(y, z, BN_value_one()))
|| !TEST_BN_even(y)
|| !TEST_true(BN_rshift1(y, y)))
goto err;
scalars[0] = y; /* (group order + 1)/2, so y*Q + y*Q = Q */
scalars[1] = y;
TEST_note("combined multiplication ...");
/* z is still the group order */
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 2, points, scalars, ctx))
|| !TEST_true(EC_POINTs_mul(group, R, z, 2, points, scalars, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, R, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, R, Q, ctx)))
goto err;
if (!TEST_true(BN_rand(y, BN_num_bits(y), 0, 0))
|| !TEST_true(BN_add(z, z, y)))
goto err;
BN_set_negative(z, 1);
scalars[0] = y;
scalars[1] = z; /* z = -(order + y) */
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 2, points, scalars, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P)))
goto err;
if (!TEST_true(BN_rand(x, BN_num_bits(y) - 1, 0, 0))
|| !TEST_true(BN_add(z, x, y)))
goto err;
BN_set_negative(z, 1);
scalars[0] = x;
scalars[1] = y;
scalars[2] = z; /* z = -(x+y) */
if (!TEST_true(EC_POINTs_mul(group, P, NULL, 3, points, scalars, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P)))
goto err;;
}
r = 1;
err:
BN_CTX_free(ctx);
BN_free(p);
BN_free(a);
BN_free(b);
BN_free(x);
BN_free(y);
BN_free(z);
BN_free(yplusone);
BN_free(cof);
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(R);
EC_GROUP_free(group);
EC_GROUP_free(variable);
return r;
}
static int char2_field_tests(void)
{
BN_CTX *ctx = NULL;
BIGNUM *p = NULL, *a = NULL, *b = NULL;
EC_GROUP *group = NULL, *tmp = NULL;
EC_POINT *P = NULL, *Q = NULL, *R = NULL;
BIGNUM *x = NULL, *y = NULL, *z = NULL, *cof = NULL, *yplusone = NULL;
unsigned char buf[100];
size_t len;
int k, r = 0;
if (!TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(p = BN_new())
|| !TEST_ptr(a = BN_new())
|| !TEST_ptr(b = BN_new())
|| !TEST_true(BN_hex2bn(&p, "13"))
|| !TEST_true(BN_hex2bn(&a, "3"))
|| !TEST_true(BN_hex2bn(&b, "1")))
goto err;
group = EC_GROUP_new(EC_GF2m_simple_method()); /* applications should use
* EC_GROUP_new_curve_GF2m
* so that the library gets
* to choose the EC_METHOD */
if (!TEST_ptr(group)
|| !TEST_true(EC_GROUP_set_curve(group, p, a, b, ctx))
|| !TEST_ptr(tmp = EC_GROUP_new(EC_GROUP_method_of(group)))
|| !TEST_true(EC_GROUP_copy(tmp, group)))
goto err;
EC_GROUP_free(group);
group = tmp;
tmp = NULL;
if (!TEST_true(EC_GROUP_get_curve(group, p, a, b, ctx)))
goto err;
TEST_info("Curve defined by Weierstrass equation");
TEST_note(" y^2 + x*y = x^3 + a*x^2 + b (mod p)");
test_output_bignum("a", a);
test_output_bignum("b", b);
test_output_bignum("p", p);
if (!TEST_ptr(P = EC_POINT_new(group))
|| !TEST_ptr(Q = EC_POINT_new(group))
|| !TEST_ptr(R = EC_POINT_new(group))
|| !TEST_true(EC_POINT_set_to_infinity(group, P))
|| !TEST_true(EC_POINT_is_at_infinity(group, P)))
goto err;
buf[0] = 0;
if (!TEST_true(EC_POINT_oct2point(group, Q, buf, 1, ctx))
|| !TEST_true(EC_POINT_add(group, P, P, Q, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P))
|| !TEST_ptr(x = BN_new())
|| !TEST_ptr(y = BN_new())
|| !TEST_ptr(z = BN_new())
|| !TEST_ptr(cof = BN_new())
|| !TEST_ptr(yplusone = BN_new())
|| !TEST_true(BN_hex2bn(&x, "6"))
/* Change test based on whether binary point compression is enabled or not. */
# ifdef OPENSSL_EC_BIN_PT_COMP
|| !TEST_true(EC_POINT_set_compressed_coordinates(group, Q, x, 1, ctx))
# else
|| !TEST_true(BN_hex2bn(&y, "8"))
|| !TEST_true(EC_POINT_set_affine_coordinates(group, Q, x, y, ctx))
# endif
)
goto err;
if (!TEST_int_gt(EC_POINT_is_on_curve(group, Q, ctx), 0)) {
/* Change test based on whether binary point compression is enabled or not. */
# ifdef OPENSSL_EC_BIN_PT_COMP
if (!TEST_true(EC_POINT_get_affine_coordinates(group, Q, x, y, ctx)))
goto err;
# endif
TEST_info("Point is not on curve");
test_output_bignum("x", x);
test_output_bignum("y", y);
goto err;
}
TEST_note("A cyclic subgroup:");
k = 100;
do {
if (!TEST_int_ne(k--, 0))
goto err;
if (EC_POINT_is_at_infinity(group, P))
TEST_note(" point at infinity");
else {
if (!TEST_true(EC_POINT_get_affine_coordinates(group, P, x, y,
ctx)))
goto err;
test_output_bignum("x", x);
test_output_bignum("y", y);
}
if (!TEST_true(EC_POINT_copy(R, P))
|| !TEST_true(EC_POINT_add(group, P, P, Q, ctx)))
goto err;
}
while (!EC_POINT_is_at_infinity(group, P));
if (!TEST_true(EC_POINT_add(group, P, Q, R, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, P)))
goto err;
/* Change test based on whether binary point compression is enabled or not. */
# ifdef OPENSSL_EC_BIN_PT_COMP
len = EC_POINT_point2oct(group, Q, POINT_CONVERSION_COMPRESSED,
buf, sizeof(buf), ctx);
if (!TEST_size_t_ne(len, 0)
|| !TEST_true(EC_POINT_oct2point(group, P, buf, len, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, Q, ctx)))
goto err;
test_output_memory("Generator as octet string, compressed form:",
buf, len);
# endif
len = EC_POINT_point2oct(group, Q, POINT_CONVERSION_UNCOMPRESSED,
buf, sizeof(buf), ctx);
if (!TEST_size_t_ne(len, 0)
|| !TEST_true(EC_POINT_oct2point(group, P, buf, len, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, Q, ctx)))
goto err;
test_output_memory("Generator as octet string, uncompressed form:",
buf, len);
/* Change test based on whether binary point compression is enabled or not. */
# ifdef OPENSSL_EC_BIN_PT_COMP
len =
EC_POINT_point2oct(group, Q, POINT_CONVERSION_HYBRID, buf, sizeof(buf),
ctx);
if (!TEST_size_t_ne(len, 0)
|| !TEST_true(EC_POINT_oct2point(group, P, buf, len, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, Q, ctx)))
goto err;
test_output_memory("Generator as octet string, hybrid form:",
buf, len);
# endif
if (!TEST_true(EC_POINT_invert(group, P, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, P, R, ctx)))
goto err;
TEST_note("\n");
r = 1;
err:
BN_CTX_free(ctx);
BN_free(p);
BN_free(a);
BN_free(b);
EC_GROUP_free(group);
EC_GROUP_free(tmp);
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(R);
BN_free(x);
BN_free(y);
BN_free(z);
BN_free(cof);
BN_free(yplusone);
return r;
}
static int hybrid_point_encoding_test(void)
{
BIGNUM *x = NULL, *y = NULL;
EC_GROUP *group = NULL;
EC_POINT *point = NULL;
unsigned char *buf = NULL;
size_t len;
int r = 0;
if (!TEST_true(BN_dec2bn(&x, "0"))
|| !TEST_true(BN_dec2bn(&y, "1"))
|| !TEST_ptr(group = EC_GROUP_new_by_curve_name(NID_sect571k1))
|| !TEST_ptr(point = EC_POINT_new(group))
|| !TEST_true(EC_POINT_set_affine_coordinates(group, point, x, y, NULL))
|| !TEST_size_t_ne(0, (len = EC_POINT_point2oct(group,
point,
POINT_CONVERSION_HYBRID,
NULL,
0,
NULL)))
|| !TEST_ptr(buf = OPENSSL_malloc(len))
|| !TEST_size_t_eq(len, EC_POINT_point2oct(group,
point,
POINT_CONVERSION_HYBRID,
buf,
len,
NULL)))
goto err;
r = 1;
/* buf contains a valid hybrid point, check that we can decode it. */
if (!TEST_true(EC_POINT_oct2point(group, point, buf, len, NULL)))
r = 0;
/* Flip the y_bit and verify that the invalid encoding is rejected. */
buf[0] ^= 1;
if (!TEST_false(EC_POINT_oct2point(group, point, buf, len, NULL)))
r = 0;
err:
BN_free(x);
BN_free(y);
EC_GROUP_free(group);
EC_POINT_free(point);
OPENSSL_free(buf);
return r;
}
#endif
static int internal_curve_test(int n)
{
EC_GROUP *group = NULL;
int nid = curves[n].nid;
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))) {
TEST_info("EC_GROUP_new_curve_name() failed with curve %s\n",
OBJ_nid2sn(nid));
return 0;
}
if (!TEST_true(EC_GROUP_check(group, NULL))) {
TEST_info("EC_GROUP_check() failed with curve %s\n", OBJ_nid2sn(nid));
EC_GROUP_free(group);
return 0;
}
EC_GROUP_free(group);
return 1;
}
static int internal_curve_test_method(int n)
{
int r, nid = curves[n].nid;
EC_GROUP *group;
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))) {
TEST_info("Curve %s failed\n", OBJ_nid2sn(nid));
return 0;
}
r = group_order_tests(group);
EC_GROUP_free(group);
return r;
}
# ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
/*
* nistp_test_params contains magic numbers for testing our optimized
* implementations of several NIST curves with characteristic > 3.
*/
struct nistp_test_params {
const EC_METHOD *(*meth) (void);
int degree;
/*
* Qx, Qy and D are taken from
* http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/ECDSA_Prime.pdf
* Otherwise, values are standard curve parameters from FIPS 180-3
*/
const char *p, *a, *b, *Qx, *Qy, *Gx, *Gy, *order, *d;
};
static const struct nistp_test_params nistp_tests_params[] = {
{
/* P-224 */
EC_GFp_nistp224_method,
224,
/* p */
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001",
/* a */
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE",
/* b */
"B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4",
/* Qx */
"E84FB0B8E7000CB657D7973CF6B42ED78B301674276DF744AF130B3E",
/* Qy */
"4376675C6FC5612C21A0FF2D2A89D2987DF7A2BC52183B5982298555",
/* Gx */
"B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21",
/* Gy */
"BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34",
/* order */
"FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D",
/* d */
"3F0C488E987C80BE0FEE521F8D90BE6034EC69AE11CA72AA777481E8",
},
{
/* P-256 */
EC_GFp_nistp256_method,
256,
/* p */
"ffffffff00000001000000000000000000000000ffffffffffffffffffffffff",
/* a */
"ffffffff00000001000000000000000000000000fffffffffffffffffffffffc",
/* b */
"5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b",
/* Qx */
"b7e08afdfe94bad3f1dc8c734798ba1c62b3a0ad1e9ea2a38201cd0889bc7a19",
/* Qy */
"3603f747959dbf7a4bb226e41928729063adc7ae43529e61b563bbc606cc5e09",
/* Gx */
"6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296",
/* Gy */
"4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5",
/* order */
"ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551",
/* d */
"c477f9f65c22cce20657faa5b2d1d8122336f851a508a1ed04e479c34985bf96",
},
{
/* P-521 */
EC_GFp_nistp521_method,
521,
/* p */
"1ff"
"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
/* a */
"1ff"
"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
"fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffc",
/* b */
"051"
"953eb9618e1c9a1f929a21a0b68540eea2da725b99b315f3b8b489918ef109e1"
"56193951ec7e937b1652c0bd3bb1bf073573df883d2c34f1ef451fd46b503f00",
/* Qx */
"0098"
"e91eef9a68452822309c52fab453f5f117c1da8ed796b255e9ab8f6410cca16e"
"59df403a6bdc6ca467a37056b1e54b3005d8ac030decfeb68df18b171885d5c4",
/* Qy */
"0164"
"350c321aecfc1cca1ba4364c9b15656150b4b78d6a48d7d28e7f31985ef17be8"
"554376b72900712c4b83ad668327231526e313f5f092999a4632fd50d946bc2e",
/* Gx */
"c6"
"858e06b70404e9cd9e3ecb662395b4429c648139053fb521f828af606b4d3dba"
"a14b5e77efe75928fe1dc127a2ffa8de3348b3c1856a429bf97e7e31c2e5bd66",
/* Gy */
"118"
"39296a789a3bc0045c8a5fb42c7d1bd998f54449579b446817afbd17273e662c"
"97ee72995ef42640c550b9013fad0761353c7086a272c24088be94769fd16650",
/* order */
"1ff"
"fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa"
"51868783bf2f966b7fcc0148f709a5d03bb5c9b8899c47aebb6fb71e91386409",
/* d */
"0100"
"085f47b8e1b8b11b7eb33028c0b2888e304bfc98501955b45bba1478dc184eee"
"df09b86a5f7c21994406072787205e69a63709fe35aa93ba333514b24f961722",
},
};
static int nistp_single_test(int idx)
{
const struct nistp_test_params *test = nistp_tests_params + idx;
BN_CTX *ctx = NULL;
BIGNUM *p = NULL, *a = NULL, *b = NULL, *x = NULL, *y = NULL;
BIGNUM *n = NULL, *m = NULL, *order = NULL, *yplusone = NULL;
EC_GROUP *NISTP = NULL;
EC_POINT *G = NULL, *P = NULL, *Q = NULL, *Q_CHECK = NULL;
int r = 0;
TEST_note("NIST curve P-%d (optimised implementation):",
test->degree);
if (!TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(p = BN_new())
|| !TEST_ptr(a = BN_new())
|| !TEST_ptr(b = BN_new())
|| !TEST_ptr(x = BN_new())
|| !TEST_ptr(y = BN_new())
|| !TEST_ptr(m = BN_new())
|| !TEST_ptr(n = BN_new())
|| !TEST_ptr(order = BN_new())
|| !TEST_ptr(yplusone = BN_new())
|| !TEST_ptr(NISTP = EC_GROUP_new(test->meth()))
|| !TEST_true(BN_hex2bn(&p, test->p))
|| !TEST_int_eq(1, BN_is_prime_ex(p, BN_prime_checks, ctx, NULL))
|| !TEST_true(BN_hex2bn(&a, test->a))
|| !TEST_true(BN_hex2bn(&b, test->b))
|| !TEST_true(EC_GROUP_set_curve(NISTP, p, a, b, ctx))
|| !TEST_ptr(G = EC_POINT_new(NISTP))
|| !TEST_ptr(P = EC_POINT_new(NISTP))
|| !TEST_ptr(Q = EC_POINT_new(NISTP))
|| !TEST_ptr(Q_CHECK = EC_POINT_new(NISTP))
|| !TEST_true(BN_hex2bn(&x, test->Qx))
|| !TEST_true(BN_hex2bn(&y, test->Qy))
|| !TEST_true(BN_add(yplusone, y, BN_value_one()))
/*
* When (x, y) is on the curve, (x, y + 1) is, as it happens, not,
* and therefore setting the coordinates should fail.
*/
|| !TEST_false(EC_POINT_set_affine_coordinates(NISTP, Q_CHECK, x,
yplusone, ctx))
|| !TEST_true(EC_POINT_set_affine_coordinates(NISTP, Q_CHECK, x, y,
ctx))
|| !TEST_true(BN_hex2bn(&x, test->Gx))
|| !TEST_true(BN_hex2bn(&y, test->Gy))
|| !TEST_true(EC_POINT_set_affine_coordinates(NISTP, G, x, y, ctx))
|| !TEST_true(BN_hex2bn(&order, test->order))
|| !TEST_true(EC_GROUP_set_generator(NISTP, G, order, BN_value_one()))
|| !TEST_int_eq(EC_GROUP_get_degree(NISTP), test->degree))
goto err;
TEST_note("NIST test vectors ... ");
if (!TEST_true(BN_hex2bn(&n, test->d)))
goto err;
/* fixed point multiplication */
EC_POINT_mul(NISTP, Q, n, NULL, NULL, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* random point multiplication */
EC_POINT_mul(NISTP, Q, NULL, G, n, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx))
/* set generator to P = 2*G, where G is the standard generator */
|| !TEST_true(EC_POINT_dbl(NISTP, P, G, ctx))
|| !TEST_true(EC_GROUP_set_generator(NISTP, P, order, BN_value_one()))
/* set the scalar to m=n/2, where n is the NIST test scalar */
|| !TEST_true(BN_rshift(m, n, 1)))
goto err;
/* test the non-standard generator */
/* fixed point multiplication */
EC_POINT_mul(NISTP, Q, m, NULL, NULL, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* random point multiplication */
EC_POINT_mul(NISTP, Q, NULL, P, m, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx))
/*
* We have not performed precomputation so have_precompute mult should be
* false
*/
|| !TEST_false(EC_GROUP_have_precompute_mult(NISTP))
/* now repeat all tests with precomputation */
|| !TEST_true(EC_GROUP_precompute_mult(NISTP, ctx))
|| !TEST_true(EC_GROUP_have_precompute_mult(NISTP)))
goto err;
/* fixed point multiplication */
EC_POINT_mul(NISTP, Q, m, NULL, NULL, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* random point multiplication */
EC_POINT_mul(NISTP, Q, NULL, P, m, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx))
/* reset generator */
|| !TEST_true(EC_GROUP_set_generator(NISTP, G, order, BN_value_one())))
goto err;
/* fixed point multiplication */
EC_POINT_mul(NISTP, Q, n, NULL, NULL, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* random point multiplication */
EC_POINT_mul(NISTP, Q, NULL, G, n, ctx);
if (!TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, Q_CHECK, ctx)))
goto err;
/* regression test for felem_neg bug */
if (!TEST_true(BN_set_word(m, 32))
|| !TEST_true(BN_set_word(n, 31))
|| !TEST_true(EC_POINT_copy(P, G))
|| !TEST_true(EC_POINT_invert(NISTP, P, ctx))
|| !TEST_true(EC_POINT_mul(NISTP, Q, m, P, n, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(NISTP, Q, G, ctx)))
goto err;
r = group_order_tests(NISTP);
err:
EC_GROUP_free(NISTP);
EC_POINT_free(G);
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(Q_CHECK);
BN_free(n);
BN_free(m);
BN_free(p);
BN_free(a);
BN_free(b);
BN_free(x);
BN_free(y);
BN_free(order);
BN_free(yplusone);
BN_CTX_free(ctx);
return r;
}
/*
* Tests a point known to cause an incorrect underflow in an old version of
* ecp_nist521.c
*/
static int underflow_test(void)
{
BN_CTX *ctx = NULL;
EC_GROUP *grp = NULL;
EC_POINT *P = NULL, *Q = NULL, *R = NULL;
BIGNUM *x1 = NULL, *y1 = NULL, *z1 = NULL, *x2 = NULL, *y2 = NULL;
BIGNUM *k = NULL;
int testresult = 0;
const char *x1str =
"1534f0077fffffe87e9adcfe000000000000000000003e05a21d2400002e031b1f4"
"b80000c6fafa4f3c1288798d624a247b5e2ffffffffffffffefe099241900004";
const char *p521m1 =
"1ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
"fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe";
ctx = BN_CTX_new();
if (!TEST_ptr(ctx))
return 0;
BN_CTX_start(ctx);
x1 = BN_CTX_get(ctx);
y1 = BN_CTX_get(ctx);
z1 = BN_CTX_get(ctx);
x2 = BN_CTX_get(ctx);
y2 = BN_CTX_get(ctx);
k = BN_CTX_get(ctx);
if (!TEST_ptr(k))
goto err;
grp = EC_GROUP_new_by_curve_name(NID_secp521r1);
P = EC_POINT_new(grp);
Q = EC_POINT_new(grp);
R = EC_POINT_new(grp);
if (!TEST_ptr(grp) || !TEST_ptr(P) || !TEST_ptr(Q) || !TEST_ptr(R))
goto err;
if (!TEST_int_gt(BN_hex2bn(&x1, x1str), 0)
|| !TEST_int_gt(BN_hex2bn(&y1, p521m1), 0)
|| !TEST_int_gt(BN_hex2bn(&z1, p521m1), 0)
|| !TEST_int_gt(BN_hex2bn(&k, "02"), 0)
|| !TEST_true(EC_POINT_set_Jprojective_coordinates_GFp(grp, P, x1,
y1, z1, ctx))
|| !TEST_true(EC_POINT_mul(grp, Q, NULL, P, k, ctx))
|| !TEST_true(EC_POINT_get_affine_coordinates(grp, Q, x1, y1, ctx))
|| !TEST_true(EC_POINT_dbl(grp, R, P, ctx))
|| !TEST_true(EC_POINT_get_affine_coordinates(grp, R, x2, y2, ctx)))
goto err;
if (!TEST_int_eq(BN_cmp(x1, x2), 0)
|| !TEST_int_eq(BN_cmp(y1, y2), 0))
goto err;
testresult = 1;
err:
BN_CTX_end(ctx);
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(R);
EC_GROUP_free(grp);
BN_CTX_free(ctx);
return testresult;
}
# endif
static const unsigned char p521_named[] = {
0x06, 0x05, 0x2b, 0x81, 0x04, 0x00, 0x23,
};
static const unsigned char p521_explicit[] = {
0x30, 0x82, 0x01, 0xc3, 0x02, 0x01, 0x01, 0x30, 0x4d, 0x06, 0x07, 0x2a,
0x86, 0x48, 0xce, 0x3d, 0x01, 0x01, 0x02, 0x42, 0x01, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x30, 0x81, 0x9f, 0x04, 0x42, 0x01, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xfc, 0x04, 0x42, 0x00, 0x51, 0x95, 0x3e, 0xb9, 0x61, 0x8e, 0x1c, 0x9a,
0x1f, 0x92, 0x9a, 0x21, 0xa0, 0xb6, 0x85, 0x40, 0xee, 0xa2, 0xda, 0x72,
0x5b, 0x99, 0xb3, 0x15, 0xf3, 0xb8, 0xb4, 0x89, 0x91, 0x8e, 0xf1, 0x09,
0xe1, 0x56, 0x19, 0x39, 0x51, 0xec, 0x7e, 0x93, 0x7b, 0x16, 0x52, 0xc0,
0xbd, 0x3b, 0xb1, 0xbf, 0x07, 0x35, 0x73, 0xdf, 0x88, 0x3d, 0x2c, 0x34,
0xf1, 0xef, 0x45, 0x1f, 0xd4, 0x6b, 0x50, 0x3f, 0x00, 0x03, 0x15, 0x00,
0xd0, 0x9e, 0x88, 0x00, 0x29, 0x1c, 0xb8, 0x53, 0x96, 0xcc, 0x67, 0x17,
0x39, 0x32, 0x84, 0xaa, 0xa0, 0xda, 0x64, 0xba, 0x04, 0x81, 0x85, 0x04,
0x00, 0xc6, 0x85, 0x8e, 0x06, 0xb7, 0x04, 0x04, 0xe9, 0xcd, 0x9e, 0x3e,
0xcb, 0x66, 0x23, 0x95, 0xb4, 0x42, 0x9c, 0x64, 0x81, 0x39, 0x05, 0x3f,
0xb5, 0x21, 0xf8, 0x28, 0xaf, 0x60, 0x6b, 0x4d, 0x3d, 0xba, 0xa1, 0x4b,
0x5e, 0x77, 0xef, 0xe7, 0x59, 0x28, 0xfe, 0x1d, 0xc1, 0x27, 0xa2, 0xff,
0xa8, 0xde, 0x33, 0x48, 0xb3, 0xc1, 0x85, 0x6a, 0x42, 0x9b, 0xf9, 0x7e,
0x7e, 0x31, 0xc2, 0xe5, 0xbd, 0x66, 0x01, 0x18, 0x39, 0x29, 0x6a, 0x78,
0x9a, 0x3b, 0xc0, 0x04, 0x5c, 0x8a, 0x5f, 0xb4, 0x2c, 0x7d, 0x1b, 0xd9,
0x98, 0xf5, 0x44, 0x49, 0x57, 0x9b, 0x44, 0x68, 0x17, 0xaf, 0xbd, 0x17,
0x27, 0x3e, 0x66, 0x2c, 0x97, 0xee, 0x72, 0x99, 0x5e, 0xf4, 0x26, 0x40,
0xc5, 0x50, 0xb9, 0x01, 0x3f, 0xad, 0x07, 0x61, 0x35, 0x3c, 0x70, 0x86,
0xa2, 0x72, 0xc2, 0x40, 0x88, 0xbe, 0x94, 0x76, 0x9f, 0xd1, 0x66, 0x50,
0x02, 0x42, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa,
0x51, 0x86, 0x87, 0x83, 0xbf, 0x2f, 0x96, 0x6b, 0x7f, 0xcc, 0x01, 0x48,
0xf7, 0x09, 0xa5, 0xd0, 0x3b, 0xb5, 0xc9, 0xb8, 0x89, 0x9c, 0x47, 0xae,
0xbb, 0x6f, 0xb7, 0x1e, 0x91, 0x38, 0x64, 0x09, 0x02, 0x01, 0x01,
};
/*
* Sometime we cannot compare nids for equality, as the built-in curve table
* includes aliases with different names for the same curve.
*
* This function returns TRUE (1) if the checked nids are identical, or if they
* alias to the same curve. FALSE (0) otherwise.
*/
static ossl_inline
int are_ec_nids_compatible(int n1d, int n2d)
{
int ret = 0;
switch (n1d) {
# ifndef OPENSSL_NO_EC2M
case NID_sect113r1:
case NID_wap_wsg_idm_ecid_wtls4:
ret = (n2d == NID_sect113r1 || n2d == NID_wap_wsg_idm_ecid_wtls4);
break;
case NID_sect163k1:
case NID_wap_wsg_idm_ecid_wtls3:
ret = (n2d == NID_sect163k1 || n2d == NID_wap_wsg_idm_ecid_wtls3);
break;
case NID_sect233k1:
case NID_wap_wsg_idm_ecid_wtls10:
ret = (n2d == NID_sect233k1 || n2d == NID_wap_wsg_idm_ecid_wtls10);
break;
case NID_sect233r1:
case NID_wap_wsg_idm_ecid_wtls11:
ret = (n2d == NID_sect233r1 || n2d == NID_wap_wsg_idm_ecid_wtls11);
break;
case NID_X9_62_c2pnb163v1:
case NID_wap_wsg_idm_ecid_wtls5:
ret = (n2d == NID_X9_62_c2pnb163v1
|| n2d == NID_wap_wsg_idm_ecid_wtls5);
break;
# endif /* OPENSSL_NO_EC2M */
case NID_secp112r1:
case NID_wap_wsg_idm_ecid_wtls6:
ret = (n2d == NID_secp112r1 || n2d == NID_wap_wsg_idm_ecid_wtls6);
break;
case NID_secp160r2:
case NID_wap_wsg_idm_ecid_wtls7:
ret = (n2d == NID_secp160r2 || n2d == NID_wap_wsg_idm_ecid_wtls7);
break;
# ifdef OPENSSL_NO_EC_NISTP_64_GCC_128
case NID_secp224r1:
case NID_wap_wsg_idm_ecid_wtls12:
ret = (n2d == NID_secp224r1 || n2d == NID_wap_wsg_idm_ecid_wtls12);
break;
# else
/*
* For SEC P-224 we want to ensure that the SECP nid is returned, as
* that is associated with a specialized method.
*/
case NID_wap_wsg_idm_ecid_wtls12:
ret = (n2d == NID_secp224r1);
break;
# endif /* def(OPENSSL_NO_EC_NISTP_64_GCC_128) */
default:
ret = (n1d == n2d);
}
return ret;
}
/*
* This checks that EC_GROUP_bew_from_ecparameters() returns a "named"
* EC_GROUP for built-in curves.
*
* Note that it is possible to retrieve an alternative alias that does not match
* the original nid.
*
* Ensure that the OPENSSL_EC_EXPLICIT_CURVE ASN1 flag is set.
*/
static int check_named_curve_from_ecparameters(int id)
{
int ret = 0, nid, tnid;
EC_GROUP *group = NULL, *tgroup = NULL, *tmpg = NULL;
const EC_POINT *group_gen = NULL;
EC_POINT *other_gen = NULL;
BIGNUM *group_cofactor = NULL, *other_cofactor = NULL;
BIGNUM *other_gen_x = NULL, *other_gen_y = NULL;
const BIGNUM *group_order = NULL;
BIGNUM *other_order = NULL;
BN_CTX *bn_ctx = NULL;
static const unsigned char invalid_seed[] = "THIS IS NOT A VALID SEED";
static size_t invalid_seed_len = sizeof(invalid_seed);
ECPARAMETERS *params = NULL, *other_params = NULL;
EC_GROUP *g_ary[8] = {NULL};
EC_GROUP **g_next = &g_ary[0];
ECPARAMETERS *p_ary[8] = {NULL};
ECPARAMETERS **p_next = &p_ary[0];
/* Do some setup */
nid = curves[id].nid;
TEST_note("Curve %s", OBJ_nid2sn(nid));
if (!TEST_ptr(bn_ctx = BN_CTX_new()))
return ret;
BN_CTX_start(bn_ctx);
if (/* Allocations */
!TEST_ptr(group_cofactor = BN_CTX_get(bn_ctx))
|| !TEST_ptr(other_gen_x = BN_CTX_get(bn_ctx))
|| !TEST_ptr(other_gen_y = BN_CTX_get(bn_ctx))
|| !TEST_ptr(other_order = BN_CTX_get(bn_ctx))
|| !TEST_ptr(other_cofactor = BN_CTX_get(bn_ctx))
/* Generate reference group and params */
|| !TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))
|| !TEST_ptr(params = EC_GROUP_get_ecparameters(group, NULL))
|| !TEST_ptr(group_gen = EC_GROUP_get0_generator(group))
|| !TEST_ptr(group_order = EC_GROUP_get0_order(group))
|| !TEST_true(EC_GROUP_get_cofactor(group, group_cofactor, NULL))
/* compute `other_*` values */
|| !TEST_ptr(tmpg = EC_GROUP_dup(group))
|| !TEST_ptr(other_gen = EC_POINT_dup(group_gen, group))
|| !TEST_true(EC_POINT_add(group, other_gen, group_gen, group_gen, NULL))
|| !TEST_true(EC_POINT_get_affine_coordinates(group, other_gen,
other_gen_x, other_gen_y, bn_ctx))
|| !TEST_true(BN_copy(other_order, group_order))
|| !TEST_true(BN_add_word(other_order, 1))
|| !TEST_true(BN_copy(other_cofactor, group_cofactor))
|| !TEST_true(BN_add_word(other_cofactor, 1)))
goto err;
EC_POINT_free(other_gen);
other_gen = NULL;
if (!TEST_ptr(other_gen = EC_POINT_new(tmpg))
|| !TEST_true(EC_POINT_set_affine_coordinates(tmpg, other_gen,
other_gen_x, other_gen_y,
bn_ctx)))
goto err;
/*
* ###########################
* # Actual tests start here #
* ###########################
*/
/*
* Creating a group from built-in explicit parameters returns a
* "named" EC_GROUP
*/
if (!TEST_ptr(tgroup = *g_next++ = EC_GROUP_new_from_ecparameters(params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef))
goto err;
/*
* We cannot always guarantee the names match, as the built-in table
* contains aliases for the same curve with different names.
*/
if (!TEST_true(are_ec_nids_compatible(nid, tnid))) {
TEST_info("nid = %s, tnid = %s", OBJ_nid2sn(nid), OBJ_nid2sn(tnid));
goto err;
}
/* Ensure that the OPENSSL_EC_EXPLICIT_CURVE ASN1 flag is set. */
if (!TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup), OPENSSL_EC_EXPLICIT_CURVE))
goto err;
/*
* An invalid seed in the parameters should be ignored: expect a "named"
* group.
*/
if (!TEST_int_eq(EC_GROUP_set_seed(tmpg, invalid_seed, invalid_seed_len),
invalid_seed_len)
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE)) {
TEST_info("nid = %s, tnid = %s", OBJ_nid2sn(nid), OBJ_nid2sn(tnid));
goto err;
}
/*
* A null seed in the parameters should be ignored, as it is optional:
* expect a "named" group.
*/
if (!TEST_int_eq(EC_GROUP_set_seed(tmpg, NULL, 0), 1)
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE)) {
TEST_info("nid = %s, tnid = %s", OBJ_nid2sn(nid), OBJ_nid2sn(tnid));
goto err;
}
/*
* Check that changing any of the generator parameters does not yield a
* match with the built-in curves
*/
if (/* Other gen, same group order & cofactor */
!TEST_true(EC_GROUP_set_generator(tmpg, other_gen, group_order,
group_cofactor))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_eq((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
/* Same gen & cofactor, different order */
|| !TEST_true(EC_GROUP_set_generator(tmpg, group_gen, other_order,
group_cofactor))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_eq((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
/* The order is not an optional field, so this should fail */
|| !TEST_false(EC_GROUP_set_generator(tmpg, group_gen, NULL,
group_cofactor))
/* Check that a wrong cofactor is ignored, and we still match */
|| !TEST_true(EC_GROUP_set_generator(tmpg, group_gen, group_order,
other_cofactor))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE)
/* Check that if the cofactor is not set then it still matches */
|| !TEST_true(EC_GROUP_set_generator(tmpg, group_gen, group_order,
NULL))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE)
/* check that restoring the generator passes */
|| !TEST_true(EC_GROUP_set_generator(tmpg, group_gen, group_order,
group_cofactor))
|| !TEST_ptr(other_params = *p_next++ =
EC_GROUP_get_ecparameters(tmpg, NULL))
|| !TEST_ptr(tgroup = *g_next++ =
EC_GROUP_new_from_ecparameters(other_params))
|| !TEST_int_ne((tnid = EC_GROUP_get_curve_name(tgroup)), NID_undef)
|| !TEST_true(are_ec_nids_compatible(nid, tnid))
|| !TEST_int_eq(EC_GROUP_get_asn1_flag(tgroup),
OPENSSL_EC_EXPLICIT_CURVE))
goto err;
ret = 1;
err:
for (g_next = &g_ary[0]; g_next < g_ary + OSSL_NELEM(g_ary); g_next++)
EC_GROUP_free(*g_next);
for (p_next = &p_ary[0]; p_next < p_ary + OSSL_NELEM(g_ary); p_next++)
ECPARAMETERS_free(*p_next);
ECPARAMETERS_free(params);
EC_POINT_free(other_gen);
EC_GROUP_free(tmpg);
EC_GROUP_free(group);
BN_CTX_end(bn_ctx);
BN_CTX_free(bn_ctx);
return ret;
}
static int parameter_test(void)
{
EC_GROUP *group = NULL, *group2 = NULL;
ECPARAMETERS *ecparameters = NULL;
unsigned char *buf = NULL;
int r = 0, len;
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(NID_secp112r1))
|| !TEST_ptr(ecparameters = EC_GROUP_get_ecparameters(group, NULL))
|| !TEST_ptr(group2 = EC_GROUP_new_from_ecparameters(ecparameters))
|| !TEST_int_eq(EC_GROUP_cmp(group, group2, NULL), 0))
goto err;
EC_GROUP_free(group);
group = NULL;
/* Test the named curve encoding, which should be default. */
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(NID_secp521r1))
|| !TEST_true((len = i2d_ECPKParameters(group, &buf)) >= 0)
|| !TEST_mem_eq(buf, len, p521_named, sizeof(p521_named)))
goto err;
OPENSSL_free(buf);
buf = NULL;
/*
* Test the explicit encoding. P-521 requires correctly zero-padding the
* curve coefficients.
*/
EC_GROUP_set_asn1_flag(group, OPENSSL_EC_EXPLICIT_CURVE);
if (!TEST_true((len = i2d_ECPKParameters(group, &buf)) >= 0)
|| !TEST_mem_eq(buf, len, p521_explicit, sizeof(p521_explicit)))
goto err;
r = 1;
err:
EC_GROUP_free(group);
EC_GROUP_free(group2);
ECPARAMETERS_free(ecparameters);
OPENSSL_free(buf);
return r;
}
/*-
* random 256-bit explicit parameters curve, cofactor absent
* order: 0x0c38d96a9f892b88772ec2e39614a82f4f (132 bit)
* cofactor: 0x12bc94785251297abfafddf1565100da (125 bit)
*/
static const unsigned char params_cf_pass[] = {
0x30, 0x81, 0xcd, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86,
0x48, 0xce, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xe5, 0x00, 0x1f, 0xc5,
0xca, 0x71, 0x9d, 0x8e, 0xf7, 0x07, 0x4b, 0x48, 0x37, 0xf9, 0x33, 0x2d,
0x71, 0xbf, 0x79, 0xe7, 0xdc, 0x91, 0xc2, 0xff, 0xb6, 0x7b, 0xc3, 0x93,
0x44, 0x88, 0xe6, 0x91, 0x30, 0x44, 0x04, 0x20, 0xe5, 0x00, 0x1f, 0xc5,
0xca, 0x71, 0x9d, 0x8e, 0xf7, 0x07, 0x4b, 0x48, 0x37, 0xf9, 0x33, 0x2d,
0x71, 0xbf, 0x79, 0xe7, 0xdc, 0x91, 0xc2, 0xff, 0xb6, 0x7b, 0xc3, 0x93,
0x44, 0x88, 0xe6, 0x8e, 0x04, 0x20, 0x18, 0x8c, 0x59, 0x57, 0xc4, 0xbc,
0x85, 0x57, 0xc3, 0x66, 0x9f, 0x89, 0xd5, 0x92, 0x0d, 0x7e, 0x42, 0x27,
0x07, 0x64, 0xaa, 0x26, 0xed, 0x89, 0xc4, 0x09, 0x05, 0x4d, 0xc7, 0x23,
0x47, 0xda, 0x04, 0x41, 0x04, 0x1b, 0x6b, 0x41, 0x0b, 0xf9, 0xfb, 0x77,
0xfd, 0x50, 0xb7, 0x3e, 0x23, 0xa3, 0xec, 0x9a, 0x3b, 0x09, 0x31, 0x6b,
0xfa, 0xf6, 0xce, 0x1f, 0xff, 0xeb, 0x57, 0x93, 0x24, 0x70, 0xf3, 0xf4,
0xba, 0x7e, 0xfa, 0x86, 0x6e, 0x19, 0x89, 0xe3, 0x55, 0x6d, 0x5a, 0xe9,
0xc0, 0x3d, 0xbc, 0xfb, 0xaf, 0xad, 0xd4, 0x7e, 0xa6, 0xe5, 0xfa, 0x1a,
0x58, 0x07, 0x9e, 0x8f, 0x0d, 0x3b, 0xf7, 0x38, 0xca, 0x02, 0x11, 0x0c,
0x38, 0xd9, 0x6a, 0x9f, 0x89, 0x2b, 0x88, 0x77, 0x2e, 0xc2, 0xe3, 0x96,
0x14, 0xa8, 0x2f, 0x4f
};
/*-
* random 256-bit explicit parameters curve, cofactor absent
* order: 0x045a75c0c17228ebd9b169a10e34a22101 (131 bit)
* cofactor: 0x2e134b4ede82649f67a2e559d361e5fe (126 bit)
*/
static const unsigned char params_cf_fail[] = {
0x30, 0x81, 0xcd, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86,
0x48, 0xce, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xc8, 0x95, 0x27, 0x37,
0xe8, 0xe1, 0xfd, 0xcc, 0xf9, 0x6e, 0x0c, 0xa6, 0x21, 0xc1, 0x7d, 0x6b,
0x9d, 0x44, 0x42, 0xea, 0x73, 0x4e, 0x04, 0xb6, 0xac, 0x62, 0x50, 0xd0,
0x33, 0xc2, 0xea, 0x13, 0x30, 0x44, 0x04, 0x20, 0xc8, 0x95, 0x27, 0x37,
0xe8, 0xe1, 0xfd, 0xcc, 0xf9, 0x6e, 0x0c, 0xa6, 0x21, 0xc1, 0x7d, 0x6b,
0x9d, 0x44, 0x42, 0xea, 0x73, 0x4e, 0x04, 0xb6, 0xac, 0x62, 0x50, 0xd0,
0x33, 0xc2, 0xea, 0x10, 0x04, 0x20, 0xbf, 0xa6, 0xa8, 0x05, 0x1d, 0x09,
0xac, 0x70, 0x39, 0xbb, 0x4d, 0xb2, 0x90, 0x8a, 0x15, 0x41, 0x14, 0x1d,
0x11, 0x86, 0x9f, 0x13, 0xa2, 0x63, 0x1a, 0xda, 0x95, 0x22, 0x4d, 0x02,
0x15, 0x0a, 0x04, 0x41, 0x04, 0xaf, 0x16, 0x71, 0xf9, 0xc4, 0xc8, 0x59,
0x1d, 0xa3, 0x6f, 0xe7, 0xc3, 0x57, 0xa1, 0xfa, 0x9f, 0x49, 0x7c, 0x11,
0x27, 0x05, 0xa0, 0x7f, 0xff, 0xf9, 0xe0, 0xe7, 0x92, 0xdd, 0x9c, 0x24,
0x8e, 0xc7, 0xb9, 0x52, 0x71, 0x3f, 0xbc, 0x7f, 0x6a, 0x9f, 0x35, 0x70,
0xe1, 0x27, 0xd5, 0x35, 0x8a, 0x13, 0xfa, 0xa8, 0x33, 0x3e, 0xd4, 0x73,
0x1c, 0x14, 0x58, 0x9e, 0xc7, 0x0a, 0x87, 0x65, 0x8d, 0x02, 0x11, 0x04,
0x5a, 0x75, 0xc0, 0xc1, 0x72, 0x28, 0xeb, 0xd9, 0xb1, 0x69, 0xa1, 0x0e,
0x34, 0xa2, 0x21, 0x01
};
/*-
* Test two random 256-bit explicit parameters curves with absent cofactor.
* The two curves are chosen to roughly straddle the bounds at which the lib
* can compute the cofactor automatically, roughly 4*sqrt(p). So test that:
*
* - params_cf_pass: order is sufficiently close to p to compute cofactor
* - params_cf_fail: order is too far away from p to compute cofactor
*
* For standards-compliant curves, cofactor is chosen as small as possible.
* So you can see neither of these curves are fit for cryptographic use.
*
* Some standards even mandate an upper bound on the cofactor, e.g. SECG1 v2:
* h <= 2**(t/8) where t is the security level of the curve, for which the lib
* will always succeed in computing the cofactor. Neither of these curves
* conform to that -- this is just robustness testing.
*/
static int cofactor_range_test(void)
{
EC_GROUP *group = NULL;
BIGNUM *cf = NULL;
int ret = 0;
const unsigned char *b1 = (const unsigned char *)params_cf_fail;
const unsigned char *b2 = (const unsigned char *)params_cf_pass;
if (!TEST_ptr(group = d2i_ECPKParameters(NULL, &b1, sizeof(params_cf_fail)))
|| !TEST_BN_eq_zero(EC_GROUP_get0_cofactor(group))
|| !TEST_ptr(group = d2i_ECPKParameters(&group, &b2,
sizeof(params_cf_pass)))
|| !TEST_int_gt(BN_hex2bn(&cf, "12bc94785251297abfafddf1565100da"), 0)
|| !TEST_BN_eq(cf, EC_GROUP_get0_cofactor(group)))
goto err;
ret = 1;
err:
BN_free(cf);
EC_GROUP_free(group);
return ret;
}
/*-
* For named curves, test that:
* - the lib correctly computes the cofactor if passed a NULL or zero cofactor
* - a nonsensical cofactor throws an error (negative test)
* - nonsensical orders throw errors (negative tests)
*/
static int cardinality_test(int n)
{
int ret = 0;
int nid = curves[n].nid;
BN_CTX *ctx = NULL;
EC_GROUP *g1 = NULL, *g2 = NULL;
EC_POINT *g2_gen = NULL;
BIGNUM *g1_p = NULL, *g1_a = NULL, *g1_b = NULL, *g1_x = NULL, *g1_y = NULL,
*g1_order = NULL, *g1_cf = NULL, *g2_cf = NULL;
TEST_info("Curve %s cardinality test", OBJ_nid2sn(nid));
if (!TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(g1 = EC_GROUP_new_by_curve_name(nid))
|| !TEST_ptr(g2 = EC_GROUP_new(EC_GROUP_method_of(g1)))) {
EC_GROUP_free(g1);
EC_GROUP_free(g2);
BN_CTX_free(ctx);
return 0;
}
BN_CTX_start(ctx);
g1_p = BN_CTX_get(ctx);
g1_a = BN_CTX_get(ctx);
g1_b = BN_CTX_get(ctx);
g1_x = BN_CTX_get(ctx);
g1_y = BN_CTX_get(ctx);
g1_order = BN_CTX_get(ctx);
g1_cf = BN_CTX_get(ctx);
if (!TEST_ptr(g2_cf = BN_CTX_get(ctx))
/* pull out the explicit curve parameters */
|| !TEST_true(EC_GROUP_get_curve(g1, g1_p, g1_a, g1_b, ctx))
|| !TEST_true(EC_POINT_get_affine_coordinates(g1,
EC_GROUP_get0_generator(g1), g1_x, g1_y, ctx))
|| !TEST_true(BN_copy(g1_order, EC_GROUP_get0_order(g1)))
|| !TEST_true(EC_GROUP_get_cofactor(g1, g1_cf, ctx))
/* construct g2 manually with g1 parameters */
|| !TEST_true(EC_GROUP_set_curve(g2, g1_p, g1_a, g1_b, ctx))
|| !TEST_ptr(g2_gen = EC_POINT_new(g2))
|| !TEST_true(EC_POINT_set_affine_coordinates(g2, g2_gen, g1_x, g1_y, ctx))
/* pass NULL cofactor: lib should compute it */
|| !TEST_true(EC_GROUP_set_generator(g2, g2_gen, g1_order, NULL))
|| !TEST_true(EC_GROUP_get_cofactor(g2, g2_cf, ctx))
|| !TEST_BN_eq(g1_cf, g2_cf)
/* pass zero cofactor: lib should compute it */
|| !TEST_true(BN_set_word(g2_cf, 0))
|| !TEST_true(EC_GROUP_set_generator(g2, g2_gen, g1_order, g2_cf))
|| !TEST_true(EC_GROUP_get_cofactor(g2, g2_cf, ctx))
|| !TEST_BN_eq(g1_cf, g2_cf)
/* negative test for invalid cofactor */
|| !TEST_true(BN_set_word(g2_cf, 0))
|| !TEST_true(BN_sub(g2_cf, g2_cf, BN_value_one()))
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, g1_order, g2_cf))
/* negative test for NULL order */
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, NULL, NULL))
/* negative test for zero order */
|| !TEST_true(BN_set_word(g1_order, 0))
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, g1_order, NULL))
/* negative test for negative order */
|| !TEST_true(BN_set_word(g2_cf, 0))
|| !TEST_true(BN_sub(g2_cf, g2_cf, BN_value_one()))
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, g1_order, NULL))
/* negative test for too large order */
|| !TEST_true(BN_lshift(g1_order, g1_p, 2))
|| !TEST_false(EC_GROUP_set_generator(g2, g2_gen, g1_order, NULL)))
goto err;
ret = 1;
err:
EC_POINT_free(g2_gen);
EC_GROUP_free(g1);
EC_GROUP_free(g2);
BN_CTX_end(ctx);
BN_CTX_free(ctx);
return ret;
}
/*
* Helper for ec_point_hex2point_test
*
* Self-tests EC_POINT_point2hex() against EC_POINT_hex2point() for the given
* (group,P) pair.
*
* If P is NULL use point at infinity.
*/
static ossl_inline
int ec_point_hex2point_test_helper(const EC_GROUP *group, const EC_POINT *P,
point_conversion_form_t form,
BN_CTX *bnctx)
{
int ret = 0;
EC_POINT *Q = NULL, *Pinf = NULL;
char *hex = NULL;
if (P == NULL) {
/* If P is NULL use point at infinity. */
if (!TEST_ptr(Pinf = EC_POINT_new(group))
|| !TEST_true(EC_POINT_set_to_infinity(group, Pinf)))
goto err;
P = Pinf;
}
if (!TEST_ptr(hex = EC_POINT_point2hex(group, P, form, bnctx))
|| !TEST_ptr(Q = EC_POINT_hex2point(group, hex, NULL, bnctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, bnctx)))
goto err;
/*
* The next check is most likely superfluous, as EC_POINT_cmp should already
* cover this.
* Nonetheless it increases the test coverage for EC_POINT_is_at_infinity,
* so we include it anyway!
*/
if (Pinf != NULL
&& !TEST_true(EC_POINT_is_at_infinity(group, Q)))
goto err;
ret = 1;
err:
EC_POINT_free(Pinf);
OPENSSL_free(hex);
EC_POINT_free(Q);
return ret;
}
/*
* This test self-validates EC_POINT_hex2point() and EC_POINT_point2hex()
*/
static int ec_point_hex2point_test(int id)
{
int ret = 0, nid;
EC_GROUP *group = NULL;
const EC_POINT *G = NULL;
EC_POINT *P = NULL;
BN_CTX * bnctx = NULL;
/* Do some setup */
nid = curves[id].nid;
if (!TEST_ptr(bnctx = BN_CTX_new())
|| !TEST_ptr(group = EC_GROUP_new_by_curve_name(nid))
|| !TEST_ptr(G = EC_GROUP_get0_generator(group))
|| !TEST_ptr(P = EC_POINT_dup(G, group)))
goto err;
if (!TEST_true(ec_point_hex2point_test_helper(group, P,
POINT_CONVERSION_COMPRESSED,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, NULL,
POINT_CONVERSION_COMPRESSED,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, P,
POINT_CONVERSION_UNCOMPRESSED,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, NULL,
POINT_CONVERSION_UNCOMPRESSED,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, P,
POINT_CONVERSION_HYBRID,
bnctx))
|| !TEST_true(ec_point_hex2point_test_helper(group, NULL,
POINT_CONVERSION_HYBRID,
bnctx)))
goto err;
ret = 1;
err:
EC_POINT_free(P);
EC_GROUP_free(group);
BN_CTX_free(bnctx);
return ret;
}
/*
* check the EC_METHOD respects the supplied EC_GROUP_set_generator G
*/
static int custom_generator_test(int id)
{
int ret = 0, nid, bsize;
EC_GROUP *group = NULL;
EC_POINT *G2 = NULL, *Q1 = NULL, *Q2 = NULL;
BN_CTX *ctx = NULL;
BIGNUM *k = NULL;
unsigned char *b1 = NULL, *b2 = NULL;
/* Do some setup */
nid = curves[id].nid;
TEST_note("Curve %s", OBJ_nid2sn(nid));
if (!TEST_ptr(ctx = BN_CTX_new()))
return 0;
BN_CTX_start(ctx);
if (!TEST_ptr(group = EC_GROUP_new_by_curve_name(nid)))
goto err;
/* expected byte length of encoded points */
bsize = (EC_GROUP_get_degree(group) + 7) / 8;
bsize = 2 * bsize + 1;
if (!TEST_ptr(k = BN_CTX_get(ctx))
/* fetch a testing scalar k != 0,1 */
|| !TEST_true(BN_rand(k, EC_GROUP_order_bits(group) - 1,
BN_RAND_TOP_ONE, BN_RAND_BOTTOM_ANY))
/* make k even */
|| !TEST_true(BN_clear_bit(k, 0))
|| !TEST_ptr(G2 = EC_POINT_new(group))
|| !TEST_ptr(Q1 = EC_POINT_new(group))
/* Q1 := kG */
|| !TEST_true(EC_POINT_mul(group, Q1, k, NULL, NULL, ctx))
/* pull out the bytes of that */
|| !TEST_int_eq(EC_POINT_point2oct(group, Q1,
POINT_CONVERSION_UNCOMPRESSED, NULL,
0, ctx), bsize)
|| !TEST_ptr(b1 = OPENSSL_malloc(bsize))
|| !TEST_int_eq(EC_POINT_point2oct(group, Q1,
POINT_CONVERSION_UNCOMPRESSED, b1,
bsize, ctx), bsize)
/* new generator is G2 := 2G */
|| !TEST_true(EC_POINT_dbl(group, G2, EC_GROUP_get0_generator(group),
ctx))
|| !TEST_true(EC_GROUP_set_generator(group, G2,
EC_GROUP_get0_order(group),
EC_GROUP_get0_cofactor(group)))
|| !TEST_ptr(Q2 = EC_POINT_new(group))
|| !TEST_true(BN_rshift1(k, k))
/* Q2 := k/2 G2 */
|| !TEST_true(EC_POINT_mul(group, Q2, k, NULL, NULL, ctx))
|| !TEST_int_eq(EC_POINT_point2oct(group, Q2,
POINT_CONVERSION_UNCOMPRESSED, NULL,
0, ctx), bsize)
|| !TEST_ptr(b2 = OPENSSL_malloc(bsize))
|| !TEST_int_eq(EC_POINT_point2oct(group, Q2,
POINT_CONVERSION_UNCOMPRESSED, b2,
bsize, ctx), bsize)
/* Q1 = kG = k/2 G2 = Q2 should hold */
|| !TEST_int_eq(CRYPTO_memcmp(b1, b2, bsize), 0))
goto err;
ret = 1;
err:
BN_CTX_end(ctx);
EC_POINT_free(Q1);
EC_POINT_free(Q2);
EC_POINT_free(G2);
EC_GROUP_free(group);
BN_CTX_free(ctx);
OPENSSL_free(b1);
OPENSSL_free(b2);
return ret;
}
#endif /* OPENSSL_NO_EC */
int setup_tests(void)
{
#ifndef OPENSSL_NO_EC
crv_len = EC_get_builtin_curves(NULL, 0);
if (!TEST_ptr(curves = OPENSSL_malloc(sizeof(*curves) * crv_len))
|| !TEST_true(EC_get_builtin_curves(curves, crv_len)))
return 0;
ADD_TEST(parameter_test);
ADD_TEST(cofactor_range_test);
ADD_ALL_TESTS(cardinality_test, crv_len);
ADD_TEST(prime_field_tests);
# ifndef OPENSSL_NO_EC2M
ADD_TEST(hybrid_point_encoding_test);
ADD_TEST(char2_field_tests);
ADD_ALL_TESTS(char2_curve_test, OSSL_NELEM(char2_curve_tests));
# endif
# ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
ADD_ALL_TESTS(nistp_single_test, OSSL_NELEM(nistp_tests_params));
ADD_TEST(underflow_test);
# endif
ADD_ALL_TESTS(internal_curve_test, crv_len);
ADD_ALL_TESTS(internal_curve_test_method, crv_len);
ADD_ALL_TESTS(check_named_curve_from_ecparameters, crv_len);
ADD_ALL_TESTS(ec_point_hex2point_test, crv_len);
ADD_ALL_TESTS(custom_generator_test, crv_len);
#endif /* OPENSSL_NO_EC */
return 1;
}
void cleanup_tests(void)
{
#ifndef OPENSSL_NO_EC
OPENSSL_free(curves);
#endif
}
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