68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
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/*
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <string.h>
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#include <openssl/blowfish.h>
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#include "bf_local.h"
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#include "bf_pi.h"
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void BF_set_key(BF_KEY *key, int len, const unsigned char *data)
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{
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int i;
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BF_LONG *p, ri, in[2];
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const unsigned char *d, *end;
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memcpy(key, &bf_init, sizeof(BF_KEY));
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p = key->P;
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if (len > ((BF_ROUNDS + 2) * 4))
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len = (BF_ROUNDS + 2) * 4;
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d = data;
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end = &(data[len]);
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for (i = 0; i < (BF_ROUNDS + 2); i++) {
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ri = *(d++);
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if (d >= end)
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d = data;
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ri <<= 8;
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ri |= *(d++);
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if (d >= end)
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d = data;
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ri <<= 8;
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ri |= *(d++);
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if (d >= end)
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d = data;
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ri <<= 8;
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ri |= *(d++);
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if (d >= end)
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d = data;
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p[i] ^= ri;
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}
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in[0] = 0L;
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in[1] = 0L;
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for (i = 0; i < (BF_ROUNDS + 2); i += 2) {
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BF_encrypt(in, key);
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p[i] = in[0];
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p[i + 1] = in[1];
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}
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p = key->S;
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for (i = 0; i < 4 * 256; i += 2) {
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BF_encrypt(in, key);
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p[i] = in[0];
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p[i + 1] = in[1];
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}
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}
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