Mercurial > dropbear

annotate libtomcrypt/src/pk/asn1/der/octet/der_encode_octet_string.c @ 1629:258b57b208ae

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Fix for issue successfull login of disabled user (#78) This commit introduces fix for scenario: 1. Root login disabled on dropbear 2. PAM authentication model enabled While login as root user, after prompt for password user is being notified about login failrue, but after second attempt of prompt for password within same session, login becames succesfull. Signed-off-by: Pawel Rapkiewicz <[email protected]>
author vincentto13 <33652988+vincentto13@users.noreply.github.com>
date Wed, 20 Mar 2019 15:03:40 +0100
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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_octet_string.c
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13 ASN.1 DER, encode a OCTET STRING, Tom St Denis
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14 */
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15
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16
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17 #ifdef LTC_DER
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18
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19 /**
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20 Store an OCTET STRING
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21 @param in The array of OCTETS to store (one per char)
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22 @param inlen The number of OCTETS to store
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23 @param out [out] The destination for the DER encoded OCTET STRING
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24 @param outlen [in/out] The max size and resulting size of the DER OCTET STRING
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25 @return CRYPT_OK if successful
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26 */
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27 int der_encode_octet_string(const unsigned char *in, unsigned long inlen,
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28 unsigned char *out, unsigned long *outlen)
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29 {
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30 unsigned long x, y, len;
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31 int err;
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32
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33 LTC_ARGCHK(in != NULL);
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34 LTC_ARGCHK(out != NULL);
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35 LTC_ARGCHK(outlen != NULL);
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36
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37 /* get the size */
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38 if ((err = der_length_octet_string(inlen, &len)) != CRYPT_OK) {
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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39 return err;
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40 }
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41
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42 /* too big? */
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43 if (len > *outlen) {
382
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44 *outlen = len;
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45 return CRYPT_BUFFER_OVERFLOW;
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46 }
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47
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48 /* encode the header+len */
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49 x = 0;
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50 out[x++] = 0x04;
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51 if (inlen < 128) {
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52 out[x++] = (unsigned char)inlen;
285
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53 } else if (inlen < 256) {
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54 out[x++] = 0x81;
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55 out[x++] = (unsigned char)inlen;
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56 } else if (inlen < 65536UL) {
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57 out[x++] = 0x82;
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58 out[x++] = (unsigned char)((inlen>>8)&255);
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59 out[x++] = (unsigned char)(inlen&255);
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60 } else if (inlen < 16777216UL) {
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61 out[x++] = 0x83;
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62 out[x++] = (unsigned char)((inlen>>16)&255);
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63 out[x++] = (unsigned char)((inlen>>8)&255);
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64 out[x++] = (unsigned char)(inlen&255);
285
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65 } else {
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66 return CRYPT_INVALID_ARG;
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67 }
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68
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69 /* store octets */
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70 for (y = 0; y < inlen; y++) {
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71 out[x++] = in[y];
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72 }
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73
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74 /* retun length */
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75 *outlen = x;
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76
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77 return CRYPT_OK;
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78 }
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79
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80 #endif
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81
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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82 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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83 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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84 /* commit time: $Format:%ai$ */