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annotate libtomcrypt/src/math/radix_to_bin.c @ 1902:4a6725ac957c

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Revert "Don't include sk keys at all in KEX list" This reverts git commit f972813ecdc7bb981d25b5a63638bd158f1c8e72. The sk algorithms need to remain in the sigalgs list so that they are included in the server-sig-algs ext-info message sent by the server. RFC8308 for server-sig-algs requires that all algorithms are listed (though OpenSSH client 8.4p1 tested doesn't require that)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 24 Mar 2022 13:42:08 +0800
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 #include "tomcrypt.h"
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10
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11 /**
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12 @file radix_to_bin.c
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13 Convert data from a specific radix to binary.
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14 Steffen Jaeckel
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15 */
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16
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17 /**
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18 Convert data from a specific radix to binary
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19
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20 The default MPI descriptors #ltm_desc, #tfm_desc and #gmp_desc
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21 have the following restrictions on parameters:
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22
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23 \p in - NUL-terminated char buffer
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24
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25 \p radix - 2..64
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26
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27 @param in The input
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28 @param radix The radix of the input
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29 @param out The output buffer
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30 @param len [in/out] The length of the output buffer
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31
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32 @return CRYPT_OK on success.
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33 */
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34 int radix_to_bin(const void *in, int radix, void *out, unsigned long *len)
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35 {
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36 unsigned long l;
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37 void* mpi;
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38 int err;
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39
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40 LTC_ARGCHK(in != NULL);
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41 LTC_ARGCHK(len != NULL);
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42
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43 if ((err = mp_init(&mpi)) != CRYPT_OK) return err;
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44 if ((err = mp_read_radix(mpi, in, radix)) != CRYPT_OK) goto LBL_ERR;
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45
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46 if ((l = mp_unsigned_bin_size(mpi)) > *len) {
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47 *len = l;
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48 err = CRYPT_BUFFER_OVERFLOW;
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49 goto LBL_ERR;
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50 }
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51 *len = l;
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52
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53 if ((err = mp_to_unsigned_bin(mpi, out)) != CRYPT_OK) goto LBL_ERR;
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54
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55 LBL_ERR:
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56 mp_clear(mpi);
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57 return err;
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58 }
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59
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60 /* ref: $Format:%D$ */
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61 /* git commit: $Format:%H$ */
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62 /* commit time: $Format:%ai$ */