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comparison libtomcrypt/src/pk/katja/katja_exptmod.c @ 1471:6dba84798cd5

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Update to libtomcrypt 1.18.1, merged with Dropbear changes
author Matt Johnston <matt@ucc.asn.au>
date Fri, 09 Feb 2018 21:44:05 +0800
parents f849a5ca2efc
children
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1470:8bba51a55704 1471:6dba84798cd5
3 * LibTomCrypt is a library that provides various cryptographic 3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner. 4 * algorithms in a highly modular and flexible manner.
5 * 5 *
6 * The library is free for all purposes without any express 6 * The library is free for all purposes without any express
7 * guarantee it works. 7 * guarantee it works.
8 *
9 * Tom St Denis, [email protected], http://libtom.org
10 */ 8 */
11 #include "tomcrypt.h" 9 #include "tomcrypt.h"
12 10
13 /** 11 /**
14 @file katja_exptmod.c 12 @file katja_exptmod.c
15 Katja LTC_PKCS-style exptmod, Tom St Denis 13 Katja PKCS-style exptmod, Tom St Denis
16 */ 14 */
17 15
18 #ifdef MKAT 16 #ifdef LTC_MKAT
19 17
20 /** 18 /**
21 Compute an RSA modular exponentiation 19 Compute an RSA modular exponentiation
22 @param in The input data to send into RSA 20 @param in The input data to send into RSA
23 @param inlen The length of the input (octets) 21 @param inlen The length of the input (octets)
24 @param out [out] The destination 22 @param out [out] The destination
25 @param outlen [in/out] The max size and resulting size of the output 23 @param outlen [in/out] The max size and resulting size of the output
26 @param which Which exponent to use, e.g. PK_PRIVATE or PK_PUBLIC 24 @param which Which exponent to use, e.g. PK_PRIVATE or PK_PUBLIC
27 @param key The RSA key to use 25 @param key The RSA key to use
28 @return CRYPT_OK if successful 26 @return CRYPT_OK if successful
29 */ 27 */
30 int katja_exptmod(const unsigned char *in, unsigned long inlen, 28 int katja_exptmod(const unsigned char *in, unsigned long inlen,
31 unsigned char *out, unsigned long *outlen, int which, 29 unsigned char *out, unsigned long *outlen, int which,
32 katja_key *key) 30 katja_key *key)
33 { 31 {
34 void *tmp, *tmpa, *tmpb; 32 void *tmp, *tmpa, *tmpb;
37 35
38 LTC_ARGCHK(in != NULL); 36 LTC_ARGCHK(in != NULL);
39 LTC_ARGCHK(out != NULL); 37 LTC_ARGCHK(out != NULL);
40 LTC_ARGCHK(outlen != NULL); 38 LTC_ARGCHK(outlen != NULL);
41 LTC_ARGCHK(key != NULL); 39 LTC_ARGCHK(key != NULL);
42 40
43 /* is the key of the right type for the operation? */ 41 /* is the key of the right type for the operation? */
44 if (which == PK_PRIVATE && (key->type != PK_PRIVATE)) { 42 if (which == PK_PRIVATE && (key->type != PK_PRIVATE)) {
45 return CRYPT_PK_NOT_PRIVATE; 43 return CRYPT_PK_NOT_PRIVATE;
46 } 44 }
47 45
108 return err; 106 return err;
109 } 107 }
110 108
111 #endif 109 #endif
112 110
113 /* $Source$ */ 111 /* ref: $Format:%D$ */
114 /* $Revision$ */ 112 /* git commit: $Format:%H$ */
115 /* $Date$ */ 113 /* commit time: $Format:%ai$ */