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/*
* Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "internal/cryptlib.h"
#ifdef OPENSSL_NO_RSA
NON_EMPTY_TRANSLATION_UNIT
#else
# include <stdio.h>
# include <openssl/evp.h>
# include <openssl/objects.h>
# include <openssl/x509.h>
# include <openssl/rsa.h>
int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
const unsigned char *ek, int ekl, const unsigned char *iv,
EVP_PKEY *priv)
{
unsigned char *key = NULL;
int i, size = 0, ret = 0;
if (type) {
EVP_CIPHER_CTX_reset(ctx);
if (!EVP_DecryptInit_ex(ctx, type, NULL, NULL, NULL))
return 0;
}
if (!priv)
return 1;
if (EVP_PKEY_id(priv) != EVP_PKEY_RSA) {
EVPerr(EVP_F_EVP_OPENINIT, EVP_R_PUBLIC_KEY_NOT_RSA);
goto err;
}
size = EVP_PKEY_size(priv);
key = OPENSSL_malloc(size);
if (key == NULL) {
/* ERROR */
EVPerr(EVP_F_EVP_OPENINIT, ERR_R_MALLOC_FAILURE);
goto err;
}
i = EVP_PKEY_decrypt_old(key, ek, ekl, priv);
if ((i <= 0) || !EVP_CIPHER_CTX_set_key_length(ctx, i)) {
/* ERROR */
goto err;
}
if (!EVP_DecryptInit_ex(ctx, NULL, NULL, key, iv))
goto err;
ret = 1;
err:
OPENSSL_clear_free(key, size);
return ret;
}
int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
{
int i;
i = EVP_DecryptFinal_ex(ctx, out, outl);
if (i)
i = EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, NULL);
return i;
}
#endif
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