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/*
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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
*/
/*
* RSA low level APIs are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include "internal/cryptlib.h"
#include <openssl/bn.h>
#include <openssl/rsa.h>
int RSA_padding_add_none(unsigned char *to, int tlen,
const unsigned char *from, int flen)
{
if (flen > tlen) {
ERR_raise(ERR_LIB_RSA, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
return 0;
}
if (flen < tlen) {
ERR_raise(ERR_LIB_RSA, 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) {
ERR_raise(ERR_LIB_RSA, RSA_R_DATA_TOO_LARGE);
return -1;
}
memset(to, 0, tlen - flen);
memcpy(to + tlen - flen, from, flen);
return tlen;
}
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