Mercurial > dropbear

annotate libtomcrypt/src/pk/asn1/der/utctime/der_encode_utctime.c @ 1156:a8f4dade70e5

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avoid getpass when not used some systems (like android's bionic) do not provide getpass. you can disable ENABLE_CLI_PASSWORD_AUTH & ENABLE_CLI_INTERACT_AUTH to avoid its use (and rely on pubkey auth), but the link still fails because the support file calls getpass. do not define this func if both of those auth methods are not used.
author Mike Frysinger <vapier@gentoo.org>
date Wed, 21 Oct 2015 22:39:55 +0800
parents 0cbe8f6dbf9e
children f849a5ca2efc
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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.com
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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 der_encode_utctime.c
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15 ASN.1 DER, encode a UTCTIME, Tom St Denis
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16 */
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17
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18 #ifdef LTC_DER
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19
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20 static const char *baseten = "0123456789";
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21
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22 #define STORE_V(y) \
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23 out[x++] = der_ia5_char_encode(baseten[(y/10) % 10]); \
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24 out[x++] = der_ia5_char_encode(baseten[y % 10]);
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25
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26 /**
382
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27 Encodes a UTC time structure in DER format
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28 @param utctime The UTC time structure to encode
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29 @param out The destination of the DER encoding of the UTC time structure
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30 @param outlen [in/out] The length of the DER encoding
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31 @return CRYPT_OK if successful
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32 */
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33 int der_encode_utctime(ltc_utctime *utctime,
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34 unsigned char *out, unsigned long *outlen)
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35 {
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36 unsigned long x, tmplen;
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37 int err;
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38
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39 LTC_ARGCHK(utctime != NULL);
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40 LTC_ARGCHK(out != NULL);
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41 LTC_ARGCHK(outlen != NULL);
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42
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43 if ((err = der_length_utctime(utctime, &tmplen)) != CRYPT_OK) {
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44 return err;
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45 }
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46 if (tmplen > *outlen) {
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47 *outlen = tmplen;
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48 return CRYPT_BUFFER_OVERFLOW;
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49 }
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50
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51 /* store header */
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52 out[0] = 0x17;
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53
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54 /* store values */
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55 x = 2;
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56 STORE_V(utctime->YY);
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57 STORE_V(utctime->MM);
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58 STORE_V(utctime->DD);
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59 STORE_V(utctime->hh);
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60 STORE_V(utctime->mm);
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61 STORE_V(utctime->ss);
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62
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63 if (utctime->off_mm || utctime->off_hh) {
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64 out[x++] = der_ia5_char_encode(utctime->off_dir ? '-' : '+');
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65 STORE_V(utctime->off_hh);
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66 STORE_V(utctime->off_mm);
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67 } else {
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68 out[x++] = der_ia5_char_encode('Z');
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69 }
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70
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71 /* store length */
382
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72 out[1] = (unsigned char)(x - 2);
285
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73
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74 /* all good let's return */
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75 *outlen = x;
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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
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81 /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utctime/der_encode_utctime.c,v $ */
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82 /* $Revision: 1.9 $ */
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83 /* $Date: 2006/12/04 21:34:03 $ */