1e1051a39Sopenharmony_ci/* 2e1051a39Sopenharmony_ci * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. 3e1051a39Sopenharmony_ci * 4e1051a39Sopenharmony_ci * Licensed under the Apache License 2.0 (the "License"). You may not use 5e1051a39Sopenharmony_ci * this file except in compliance with the License. You can obtain a copy 6e1051a39Sopenharmony_ci * in the file LICENSE in the source distribution or at 7e1051a39Sopenharmony_ci * https://www.openssl.org/source/license.html 8e1051a39Sopenharmony_ci */ 9e1051a39Sopenharmony_ci 10e1051a39Sopenharmony_ci#include <stdio.h> 11e1051a39Sopenharmony_ci#include "internal/cryptlib.h" 12e1051a39Sopenharmony_ci#include <openssl/evp.h> 13e1051a39Sopenharmony_ci#include <openssl/objects.h> 14e1051a39Sopenharmony_ci#include <openssl/x509.h> 15e1051a39Sopenharmony_ci#include <openssl/pem.h> 16e1051a39Sopenharmony_ci 17e1051a39Sopenharmony_ciint PEM_SignInit(EVP_MD_CTX *ctx, EVP_MD *type) 18e1051a39Sopenharmony_ci{ 19e1051a39Sopenharmony_ci return EVP_DigestInit_ex(ctx, type, NULL); 20e1051a39Sopenharmony_ci} 21e1051a39Sopenharmony_ci 22e1051a39Sopenharmony_ciint PEM_SignUpdate(EVP_MD_CTX *ctx, 23e1051a39Sopenharmony_ci const unsigned char *data, unsigned int count) 24e1051a39Sopenharmony_ci{ 25e1051a39Sopenharmony_ci return EVP_DigestUpdate(ctx, data, count); 26e1051a39Sopenharmony_ci} 27e1051a39Sopenharmony_ci 28e1051a39Sopenharmony_ciint PEM_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, 29e1051a39Sopenharmony_ci unsigned int *siglen, EVP_PKEY *pkey) 30e1051a39Sopenharmony_ci{ 31e1051a39Sopenharmony_ci unsigned char *m; 32e1051a39Sopenharmony_ci int i, ret = 0; 33e1051a39Sopenharmony_ci unsigned int m_len; 34e1051a39Sopenharmony_ci 35e1051a39Sopenharmony_ci m = OPENSSL_malloc(EVP_PKEY_get_size(pkey)); 36e1051a39Sopenharmony_ci if (m == NULL) { 37e1051a39Sopenharmony_ci ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE); 38e1051a39Sopenharmony_ci goto err; 39e1051a39Sopenharmony_ci } 40e1051a39Sopenharmony_ci 41e1051a39Sopenharmony_ci if (EVP_SignFinal(ctx, m, &m_len, pkey) <= 0) 42e1051a39Sopenharmony_ci goto err; 43e1051a39Sopenharmony_ci 44e1051a39Sopenharmony_ci i = EVP_EncodeBlock(sigret, m, m_len); 45e1051a39Sopenharmony_ci *siglen = i; 46e1051a39Sopenharmony_ci ret = 1; 47e1051a39Sopenharmony_ci err: 48e1051a39Sopenharmony_ci /* ctx has been zeroed by EVP_SignFinal() */ 49e1051a39Sopenharmony_ci OPENSSL_free(m); 50e1051a39Sopenharmony_ci return ret; 51e1051a39Sopenharmony_ci} 52