Mercurial > dropbear

comparison src/pk/pkcs1/pkcs_1_i2osp.c @ 381:999a5eb4ed10 libtomcrypt-dropbear

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propagate from branch 'au.asn.ucc.matt.ltc.orig' (head 52840647ac7f5c707c3bd158d119a15734a7ef28) to branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 11 Jan 2007 02:39:21 +0000
parents d5faf4814ddb
children
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281:997e6f7dc01e 381:999a5eb4ed10
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 * 8 *
9 * Tom St Denis, [email protected], http://libtomcrypt.org 9 * Tom St Denis, [email protected], http://libtomcrypt.com
10 */ 10 */
11 #include "tomcrypt.h" 11 #include "tomcrypt.h"
12 12
13 /** 13 /**
14 @file pkcs_1_i2osp.c 14 @file pkcs_1_i2osp.c
26 @param n The integer to store 26 @param n The integer to store
27 @param modulus_len The length of the RSA modulus 27 @param modulus_len The length of the RSA modulus
28 @param out [out] The destination for the integer 28 @param out [out] The destination for the integer
29 @return CRYPT_OK if successful 29 @return CRYPT_OK if successful
30 */ 30 */
31 int pkcs_1_i2osp(mp_int *n, unsigned long modulus_len, unsigned char *out) 31 int pkcs_1_i2osp(void *n, unsigned long modulus_len, unsigned char *out)
32 { 32 {
33 int err;
34 unsigned long size; 33 unsigned long size;
35 34
36 size = mp_unsigned_bin_size(n); 35 size = mp_unsigned_bin_size(n);
37 36
38 if (size > modulus_len) { 37 if (size > modulus_len) {
39 return CRYPT_BUFFER_OVERFLOW; 38 return CRYPT_BUFFER_OVERFLOW;
40 } 39 }
41 40
42 /* store it */ 41 /* store it */
43 zeromem(out, modulus_len); 42 zeromem(out, modulus_len);
44 if ((err = mp_to_unsigned_bin(n, out+(modulus_len-size))) != MP_OKAY) { 43 return mp_to_unsigned_bin(n, out+(modulus_len-size));
45 return mpi_to_ltc_error(err);
46 }
47 return CRYPT_OK;
48 } 44 }
49 45
50 #endif /* PKCS_1 */ 46 #endif /* PKCS_1 */
51 47
52 48
53 /* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_i2osp.c,v $ */ 49 /* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_i2osp.c,v $ */
54 /* $Revision: 1.3 $ */ 50 /* $Revision: 1.5 $ */
55 /* $Date: 2005/05/05 14:35:59 $ */ 51 /* $Date: 2006/03/31 14:15:35 $ */