1 /* rsa.c
2 **
3 ** Copyright 2012, The Android Open Source Project
4 **
5 ** Redistribution and use in source and binary forms, with or without
6 ** modification, are permitted provided that the following conditions are met:
7 ** * Redistributions of source code must retain the above copyright
8 ** notice, this list of conditions and the following disclaimer.
9 ** * Redistributions in binary form must reproduce the above copyright
10 ** notice, this list of conditions and the following disclaimer in the
11 ** documentation and/or other materials provided with the distribution.
12 ** * Neither the name of Google Inc. nor the names of its contributors may
13 ** be used to endorse or promote products derived from this software
14 ** without specific prior written permission.
15 **
16 ** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
17 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 ** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 ** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 ** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 ** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 ** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 ** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "mincrypt/rsa.h"
29
30 int RSA_e_f4_verify(const RSAPublicKey* key,
31 const uint8_t* signature,
32 const int len,
33 const uint8_t* sha);
34
35 int RSA_e_3_verify(const RSAPublicKey *key,
36 const uint8_t *signature,
37 const int len,
38 const uint8_t *sha);
39
RSA_verify(const RSAPublicKey * key,const uint8_t * signature,const int len,const uint8_t * sha)40 int RSA_verify(const RSAPublicKey *key,
41 const uint8_t *signature,
42 const int len,
43 const uint8_t *sha) {
44 switch (key->exponent) {
45 case 3:
46 return RSA_e_3_verify(key, signature, len, sha);
47 break;
48 case 65537:
49 return RSA_e_f4_verify(key, signature, len, sha);
50 break;
51 default:
52 return 0;
53 }
54 }
55