Mercurial > dropbear

annotate libtomcrypt/src/pk/pkcs1/pkcs_1_os2ip.c @ 409:0e69e948caba

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Add comments about requiring keysize <= 2*SHA1_HASH_SIZE
author Matt Johnston <matt@ucc.asn.au>
date Sun, 04 Feb 2007 10:31:48 +0000
parents 1b9e69c058d2
children 0cbe8f6dbf9e
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 *
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9 * Tom St Denis, [email protected], http://libtomcrypt.org
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file pkcs_1_os2ip.c
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15 Octet to Integer OS2IP, Tom St Denis
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16 */
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17 #ifdef PKCS_1
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18
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19 /**
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20 Read a binary string into an mp_int
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21 @param n [out] The mp_int destination
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22 @param in The binary string to read
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23 @param inlen The length of the binary string
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24 @return CRYPT_OK if successful
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25 */
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26 int pkcs_1_os2ip(mp_int *n, unsigned char *in, unsigned long inlen)
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27 {
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28 int err;
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29 /* read it */
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30 if ((err = mp_read_unsigned_bin(n, in, inlen)) != MP_OKAY) {
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31 return mpi_to_ltc_error(err);
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32 }
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33 return CRYPT_OK;
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34 }
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35
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36 #endif /* PKCS_1 */
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39 /* $Source: /cvs/libtom/libtomcrypt/src/pk/pkcs1/pkcs_1_os2ip.c,v $ */
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40 /* $Revision: 1.3 $ */
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41 /* $Date: 2005/05/05 14:35:59 $ */