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- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.] */
-
- #include <openssl/evp.h>
-
- #include <openssl/digest.h>
- #include <openssl/err.h>
-
- #include "internal.h"
-
-
- int EVP_SignInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) {
- return EVP_DigestInit_ex(ctx, type, impl);
- }
-
- int EVP_SignInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
- return EVP_DigestInit(ctx, type);
- }
-
- int EVP_SignUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
- return EVP_DigestUpdate(ctx, data, len);
- }
-
- int EVP_SignFinal(const EVP_MD_CTX *ctx, uint8_t *sig,
- unsigned int *out_sig_len, EVP_PKEY *pkey) {
- uint8_t m[EVP_MAX_MD_SIZE];
- unsigned int m_len;
- int ret = 0;
- EVP_MD_CTX tmp_ctx;
- EVP_PKEY_CTX *pkctx = NULL;
- size_t sig_len = EVP_PKEY_size(pkey);
-
- *out_sig_len = 0;
- EVP_MD_CTX_init(&tmp_ctx);
- if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) ||
- !EVP_DigestFinal_ex(&tmp_ctx, m, &m_len)) {
- goto out;
- }
- EVP_MD_CTX_cleanup(&tmp_ctx);
-
- pkctx = EVP_PKEY_CTX_new(pkey, NULL);
- if (!pkctx || EVP_PKEY_sign_init(pkctx) <= 0 ||
- EVP_PKEY_CTX_set_signature_md(pkctx, ctx->digest) <= 0 ||
- EVP_PKEY_sign(pkctx, sig, &sig_len, m, m_len) <= 0) {
- goto out;
- }
- *out_sig_len = sig_len;
- ret = 1;
-
- out:
- if (pkctx) {
- EVP_PKEY_CTX_free(pkctx);
- }
-
- return ret;
- }
-
- int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) {
- return EVP_DigestInit_ex(ctx, type, impl);
- }
-
- int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
- return EVP_DigestInit(ctx, type);
- }
-
- int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
- return EVP_DigestUpdate(ctx, data, len);
- }
-
- int EVP_VerifyFinal(EVP_MD_CTX *ctx, const uint8_t *sig, size_t sig_len,
- EVP_PKEY *pkey) {
- uint8_t m[EVP_MAX_MD_SIZE];
- unsigned int m_len;
- int ret = 0;
- EVP_MD_CTX tmp_ctx;
- EVP_PKEY_CTX *pkctx = NULL;
-
- EVP_MD_CTX_init(&tmp_ctx);
- if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx) ||
- !EVP_DigestFinal_ex(&tmp_ctx, m, &m_len)) {
- EVP_MD_CTX_cleanup(&tmp_ctx);
- goto out;
- }
- EVP_MD_CTX_cleanup(&tmp_ctx);
-
- pkctx = EVP_PKEY_CTX_new(pkey, NULL);
- if (!pkctx ||
- EVP_PKEY_verify_init(pkctx) <= 0 ||
- EVP_PKEY_CTX_set_signature_md(pkctx, ctx->digest) <= 0) {
- goto out;
- }
- ret = EVP_PKEY_verify(pkctx, sig, sig_len, m, m_len);
-
- out:
- EVP_PKEY_CTX_free(pkctx);
- return ret;
- }
-
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