107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
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/*
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* Copyright 1999-2016 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 "internal/cryptlib.h"
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#include <openssl/x509v3.h>
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#include "crypto/x509.h"
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#include "ext_dat.h"
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static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx, char *str);
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const X509V3_EXT_METHOD v3_skey_id = {
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NID_subject_key_identifier, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
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0, 0, 0, 0,
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(X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
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(X509V3_EXT_S2I)s2i_skey_id,
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0, 0, 0, 0,
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NULL
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};
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char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
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const ASN1_OCTET_STRING *oct)
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{
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return OPENSSL_buf2hexstr(oct->data, oct->length);
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}
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ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx, const char *str)
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{
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ASN1_OCTET_STRING *oct;
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long length;
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if ((oct = ASN1_OCTET_STRING_new()) == NULL) {
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X509V3err(X509V3_F_S2I_ASN1_OCTET_STRING, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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if ((oct->data = OPENSSL_hexstr2buf(str, &length)) == NULL) {
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ASN1_OCTET_STRING_free(oct);
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return NULL;
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}
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oct->length = length;
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return oct;
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}
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static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx, char *str)
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{
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ASN1_OCTET_STRING *oct;
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X509_PUBKEY *pubkey;
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const unsigned char *pk;
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int pklen;
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unsigned char pkey_dig[EVP_MAX_MD_SIZE];
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unsigned int diglen;
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if (strcmp(str, "hash"))
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return s2i_ASN1_OCTET_STRING(method, ctx, str);
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if ((oct = ASN1_OCTET_STRING_new()) == NULL) {
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X509V3err(X509V3_F_S2I_SKEY_ID, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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if (ctx && (ctx->flags == CTX_TEST))
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return oct;
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if (!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
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X509V3err(X509V3_F_S2I_SKEY_ID, X509V3_R_NO_PUBLIC_KEY);
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goto err;
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}
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if (ctx->subject_req)
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pubkey = ctx->subject_req->req_info.pubkey;
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else
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pubkey = ctx->subject_cert->cert_info.key;
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if (pubkey == NULL) {
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X509V3err(X509V3_F_S2I_SKEY_ID, X509V3_R_NO_PUBLIC_KEY);
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goto err;
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}
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X509_PUBKEY_get0_param(NULL, &pk, &pklen, NULL, pubkey);
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if (!EVP_Digest(pk, pklen, pkey_dig, &diglen, EVP_sha1(), NULL))
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goto err;
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if (!ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
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X509V3err(X509V3_F_S2I_SKEY_ID, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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return oct;
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err:
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ASN1_OCTET_STRING_free(oct);
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return NULL;
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}
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