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comparison libtomcrypt/src/pk/asn1/der/object_identifier/der_decode_object_identifier.c @ 435:337c45621e81

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merge of 'a9b0496634cdd25647b65e585cc3240f3fa699ee' and 'c22be8b8f570b48e9662dac32c7b3e7148a42206'
author Matt Johnston <matt@ucc.asn.au>
date Thu, 22 Feb 2007 14:53:49 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
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434:0aaaf68e97dc 435:337c45621e81
4 * algorithms in a highly modular and flexible manner. 4 * algorithms in a highly modular and flexible manner.
5 * 5 *
6 * The library is free for all purposes without any express 6 * The library is free for all purposes without any express
7 * guarantee it works. 7 * guarantee it works.
8 * 8 *
9 * Tom St Denis, [email protected], http://libtomcrypt.org 9 * Tom St Denis, [email protected], http://libtomcrypt.com
10 */ 10 */
11 #include "tomcrypt.h" 11 #include "tomcrypt.h"
12 12
13 /** 13 /**
14 @file der_decode_object_identifier.c 14 @file der_decode_object_identifier.c
65 65
66 if (len < 1 || (len + x) > inlen) { 66 if (len < 1 || (len + x) > inlen) {
67 return CRYPT_INVALID_PACKET; 67 return CRYPT_INVALID_PACKET;
68 } 68 }
69 69
70 /* decode word1 and word2 */ 70 /* decode words */
71 --len; 71 y = 0;
72 t = in[x++];
73 words[0] = t/40;
74 words[1] = t%40;
75
76 /* decode rest */
77 y = 2;
78 t = 0; 72 t = 0;
79 while (len--) { 73 while (len--) {
80 t = (t << 7) | (in[x] & 0x7F); 74 t = (t << 7) | (in[x] & 0x7F);
81 if (!(in[x++] & 0x80)) { 75 if (!(in[x++] & 0x80)) {
82 /* store t */ 76 /* store t */
83 if (y >= *outlen) { 77 if (y >= *outlen) {
84 return CRYPT_BUFFER_OVERFLOW; 78 return CRYPT_BUFFER_OVERFLOW;
85 } 79 }
86 words[y++] = t; 80 if (y == 0) {
81 words[0] = t / 40;
82 words[1] = t % 40;
83 y = 2;
84 } else {
85 words[y++] = t;
86 }
87 t = 0; 87 t = 0;
88 } 88 }
89 } 89 }
90 90
91 *outlen = y; 91 *outlen = y;
93 } 93 }
94 94
95 #endif 95 #endif
96 96
97 /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/object_identifier/der_decode_object_identifier.c,v $ */ 97 /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/object_identifier/der_decode_object_identifier.c,v $ */
98 /* $Revision: 1.1 $ */ 98 /* $Revision: 1.5 $ */
99 /* $Date: 2005/05/16 15:08:11 $ */ 99 /* $Date: 2006/11/21 00:18:23 $ */