A local copy of OpenSSL from GitHub
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/*
* Copyright 1995-2016 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"
#include <openssl/bn.h>
#include <openssl/rsa.h>
#include <openssl/rand.h>
int RSA_padding_add_none(unsigned char *to, int tlen,
const unsigned char *from, int flen)
{
if (flen > tlen) {
RSAerr(RSA_F_RSA_PADDING_ADD_NONE, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
return (0);
}
if (flen < tlen) {
RSAerr(RSA_F_RSA_PADDING_ADD_NONE, RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE);
return (0);
}
memcpy(to, from, (unsigned int)flen);
return (1);
}
int RSA_padding_check_none(unsigned char *to, int tlen,
const unsigned char *from, int flen, int num)
{
if (flen > tlen) {
RSAerr(RSA_F_RSA_PADDING_CHECK_NONE, RSA_R_DATA_TOO_LARGE);
return (-1);
}
memset(to, 0, tlen - flen);
memcpy(to + tlen - flen, from, flen);
return (tlen);
}