[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include "internal/cryptlib.h"
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| 12 | #include <openssl/evp.h>
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| 13 | #include <openssl/objects.h>
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| 14 | #include <openssl/x509.h>
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| 15 | #include <openssl/pem.h>
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| 16 |
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| 17 | int PEM_SignInit(EVP_MD_CTX *ctx, EVP_MD *type)
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| 18 | {
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| 19 | return EVP_DigestInit_ex(ctx, type, NULL);
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| 20 | }
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| 21 |
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| 22 | int PEM_SignUpdate(EVP_MD_CTX *ctx, unsigned char *data, unsigned int count)
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| 23 | {
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| 24 | return EVP_DigestUpdate(ctx, data, count);
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| 25 | }
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| 26 |
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| 27 | int PEM_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret,
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| 28 | unsigned int *siglen, EVP_PKEY *pkey)
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| 29 | {
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| 30 | unsigned char *m;
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| 31 | int i, ret = 0;
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| 32 | unsigned int m_len;
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| 33 |
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| 34 | m = OPENSSL_malloc(EVP_PKEY_size(pkey) + 2);
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| 35 | if (m == NULL) {
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| 36 | PEMerr(PEM_F_PEM_SIGNFINAL, ERR_R_MALLOC_FAILURE);
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| 37 | goto err;
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| 38 | }
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| 39 |
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| 40 | if (EVP_SignFinal(ctx, m, &m_len, pkey) <= 0)
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| 41 | goto err;
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| 42 |
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| 43 | i = EVP_EncodeBlock(sigret, m, m_len);
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| 44 | *siglen = i;
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| 45 | ret = 1;
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| 46 | err:
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| 47 | /* ctx has been zeroed by EVP_SignFinal() */
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| 48 | OPENSSL_free(m);
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| 49 | return (ret);
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| 50 | }
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