Mercurial > dropbear

annotate libtomcrypt/src/pk/asn1/der/ia5/der_encode_ia5_string.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
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285
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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 der_encode_ia5_string.c
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13 ASN.1 DER, encode a IA5 STRING, Tom St Denis
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14 */
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15
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16 #ifdef LTC_DER
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17
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18 /**
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19 Store an IA5 STRING
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20 @param in The array of IA5 to store (one per char)
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21 @param inlen The number of IA5 to store
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22 @param out [out] The destination for the DER encoded IA5 STRING
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23 @param outlen [in/out] The max size and resulting size of the DER IA5 STRING
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24 @return CRYPT_OK if successful
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25 */
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26 int der_encode_ia5_string(const unsigned char *in, unsigned long inlen,
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27 unsigned char *out, unsigned long *outlen)
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28 {
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29 unsigned long x, y, len;
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30 int err;
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31
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32 LTC_ARGCHK(in != NULL);
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33 LTC_ARGCHK(out != NULL);
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34 LTC_ARGCHK(outlen != NULL);
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35
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36 /* get the size */
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37 if ((err = der_length_ia5_string(in, inlen, &len)) != CRYPT_OK) {
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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38 return err;
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39 }
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40
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41 /* too big? */
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42 if (len > *outlen) {
382
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43 *outlen = len;
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44 return CRYPT_BUFFER_OVERFLOW;
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45 }
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46
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47 /* encode the header+len */
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48 x = 0;
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49 out[x++] = 0x16;
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50 if (inlen < 128) {
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51 out[x++] = (unsigned char)inlen;
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52 } else if (inlen < 256) {
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53 out[x++] = 0x81;
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54 out[x++] = (unsigned char)inlen;
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55 } else if (inlen < 65536UL) {
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56 out[x++] = 0x82;
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57 out[x++] = (unsigned char)((inlen>>8)&255);
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58 out[x++] = (unsigned char)(inlen&255);
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59 } else if (inlen < 16777216UL) {
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60 out[x++] = 0x83;
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61 out[x++] = (unsigned char)((inlen>>16)&255);
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62 out[x++] = (unsigned char)((inlen>>8)&255);
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63 out[x++] = (unsigned char)(inlen&255);
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64 } else {
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65 return CRYPT_INVALID_ARG;
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66 }
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67
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68 /* store octets */
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69 for (y = 0; y < inlen; y++) {
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70 out[x++] = der_ia5_char_encode(in[y]);
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71 }
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72
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73 /* retun length */
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74 *outlen = x;
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75
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76 return CRYPT_OK;
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77 }
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78
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79 #endif
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80
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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81 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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82 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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83 /* commit time: $Format:%ai$ */