Mercurial > dropbear

comparison libtomcrypt/src/pk/pkcs1/pkcs_1_i2osp.c @ 382:0cbe8f6dbf9e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 2af22fb4e878750b88f80f90d439b316d229796f) to branch 'au.asn.ucc.matt.dropbear' (head 02c413252c90e9de8e03d91e9939dde3029f5c0a)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 11 Jan 2007 02:41:05 +0000
parents 1b9e69c058d2
children f849a5ca2efc
comparison
equal deleted inserted replaced
379:b66a00272a90 382:0cbe8f6dbf9e
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 $ */