1 /*
2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include "internal/cryptlib.h"
11 #include <openssl/bn.h>
12 #include <openssl/rsa.h>
13
RSA_padding_add_none(unsigned char * to,int tlen,const unsigned char * from,int flen)14 int RSA_padding_add_none(unsigned char *to, int tlen,
15 const unsigned char *from, int flen)
16 {
17 if (flen > tlen) {
18 RSAerr(RSA_F_RSA_PADDING_ADD_NONE, RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
19 return 0;
20 }
21
22 if (flen < tlen) {
23 RSAerr(RSA_F_RSA_PADDING_ADD_NONE, RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE);
24 return 0;
25 }
26
27 memcpy(to, from, (unsigned int)flen);
28 return 1;
29 }
30
RSA_padding_check_none(unsigned char * to,int tlen,const unsigned char * from,int flen,int num)31 int RSA_padding_check_none(unsigned char *to, int tlen,
32 const unsigned char *from, int flen, int num)
33 {
34
35 if (flen > tlen) {
36 RSAerr(RSA_F_RSA_PADDING_CHECK_NONE, RSA_R_DATA_TOO_LARGE);
37 return -1;
38 }
39
40 memset(to, 0, tlen - flen);
41 memcpy(to + tlen - flen, from, flen);
42 return tlen;
43 }
44