Mercurial > dropbear
comparison libtomcrypt/src/pk/asn1/der/teletex_string/der_length_teletex_string.c @ 1471:6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
author | Matt Johnston <matt@ucc.asn.au> |
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date | Fri, 09 Feb 2018 21:44:05 +0800 |
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1470:8bba51a55704 | 1471:6dba84798cd5 |
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis | |
2 * | |
3 * LibTomCrypt is a library that provides various cryptographic | |
4 * algorithms in a highly modular and flexible manner. | |
5 * | |
6 * The library is free for all purposes without any express | |
7 * guarantee it works. | |
8 */ | |
9 #include "tomcrypt.h" | |
10 | |
11 /** | |
12 @file der_length_teletex_string.c | |
13 ASN.1 DER, get length of teletex STRING | |
14 */ | |
15 | |
16 #ifdef LTC_DER | |
17 | |
18 static const struct { | |
19 int code, value; | |
20 } teletex_table[] = { | |
21 { '\0', 0 }, | |
22 { '\a', 7 }, | |
23 { '\b', 8 }, | |
24 { '\t', 9 }, | |
25 { '\n', 10 }, | |
26 { '\v', 11 }, | |
27 { '\f', 12 }, | |
28 { '\r', 13 }, | |
29 { ' ', 32 }, | |
30 { '!', 33 }, | |
31 { '"', 34 }, | |
32 { '%', 37 }, | |
33 { '&', 38 }, | |
34 { '\'', 39 }, | |
35 { '(', 40 }, | |
36 { ')', 41 }, | |
37 { '+', 43 }, | |
38 { ',', 44 }, | |
39 { '-', 45 }, | |
40 { '.', 46 }, | |
41 { '/', 47 }, | |
42 { '0', 48 }, | |
43 { '1', 49 }, | |
44 { '2', 50 }, | |
45 { '3', 51 }, | |
46 { '4', 52 }, | |
47 { '5', 53 }, | |
48 { '6', 54 }, | |
49 { '7', 55 }, | |
50 { '8', 56 }, | |
51 { '9', 57 }, | |
52 { ':', 58 }, | |
53 { ';', 59 }, | |
54 { '<', 60 }, | |
55 { '=', 61 }, | |
56 { '>', 62 }, | |
57 { '?', 63 }, | |
58 { '@', 64 }, | |
59 { 'A', 65 }, | |
60 { 'B', 66 }, | |
61 { 'C', 67 }, | |
62 { 'D', 68 }, | |
63 { 'E', 69 }, | |
64 { 'F', 70 }, | |
65 { 'G', 71 }, | |
66 { 'H', 72 }, | |
67 { 'I', 73 }, | |
68 { 'J', 74 }, | |
69 { 'K', 75 }, | |
70 { 'L', 76 }, | |
71 { 'M', 77 }, | |
72 { 'N', 78 }, | |
73 { 'O', 79 }, | |
74 { 'P', 80 }, | |
75 { 'Q', 81 }, | |
76 { 'R', 82 }, | |
77 { 'S', 83 }, | |
78 { 'T', 84 }, | |
79 { 'U', 85 }, | |
80 { 'V', 86 }, | |
81 { 'W', 87 }, | |
82 { 'X', 88 }, | |
83 { 'Y', 89 }, | |
84 { 'Z', 90 }, | |
85 { '[', 91 }, | |
86 { ']', 93 }, | |
87 { '_', 95 }, | |
88 { 'a', 97 }, | |
89 { 'b', 98 }, | |
90 { 'c', 99 }, | |
91 { 'd', 100 }, | |
92 { 'e', 101 }, | |
93 { 'f', 102 }, | |
94 { 'g', 103 }, | |
95 { 'h', 104 }, | |
96 { 'i', 105 }, | |
97 { 'j', 106 }, | |
98 { 'k', 107 }, | |
99 { 'l', 108 }, | |
100 { 'm', 109 }, | |
101 { 'n', 110 }, | |
102 { 'o', 111 }, | |
103 { 'p', 112 }, | |
104 { 'q', 113 }, | |
105 { 'r', 114 }, | |
106 { 's', 115 }, | |
107 { 't', 116 }, | |
108 { 'u', 117 }, | |
109 { 'v', 118 }, | |
110 { 'w', 119 }, | |
111 { 'x', 120 }, | |
112 { 'y', 121 }, | |
113 { 'z', 122 }, | |
114 { '|', 124 }, | |
115 { ' ', 160 }, | |
116 { 0xa1, 161 }, | |
117 { 0xa2, 162 }, | |
118 { 0xa3, 163 }, | |
119 { '$', 164 }, | |
120 { 0xa5, 165 }, | |
121 { '#', 166 }, | |
122 { 0xa7, 167 }, | |
123 { 0xa4, 168 }, | |
124 { 0xab, 171 }, | |
125 { 0xb0, 176 }, | |
126 { 0xb1, 177 }, | |
127 { 0xb2, 178 }, | |
128 { 0xb3, 179 }, | |
129 { 0xd7, 180 }, | |
130 { 0xb5, 181 }, | |
131 { 0xb6, 182 }, | |
132 { 0xb7, 183 }, | |
133 { 0xf7, 184 }, | |
134 { 0xbb, 187 }, | |
135 { 0xbc, 188 }, | |
136 { 0xbd, 189 }, | |
137 { 0xbe, 190 }, | |
138 { 0xbf, 191 }, | |
139 }; | |
140 | |
141 int der_teletex_char_encode(int c) | |
142 { | |
143 int x; | |
144 for (x = 0; x < (int)(sizeof(teletex_table)/sizeof(teletex_table[0])); x++) { | |
145 if (teletex_table[x].code == c) { | |
146 return teletex_table[x].value; | |
147 } | |
148 } | |
149 return -1; | |
150 } | |
151 | |
152 int der_teletex_value_decode(int v) | |
153 { | |
154 int x; | |
155 for (x = 0; x < (int)(sizeof(teletex_table)/sizeof(teletex_table[0])); x++) { | |
156 if (teletex_table[x].value == v) { | |
157 return teletex_table[x].code; | |
158 } | |
159 } | |
160 return -1; | |
161 } | |
162 | |
163 /** | |
164 Gets length of DER encoding of teletex STRING | |
165 @param octets The values you want to encode | |
166 @param noctets The number of octets in the string to encode | |
167 @param outlen [out] The length of the DER encoding for the given string | |
168 @return CRYPT_OK if successful | |
169 */ | |
170 int der_length_teletex_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen) | |
171 { | |
172 unsigned long x; | |
173 | |
174 LTC_ARGCHK(outlen != NULL); | |
175 LTC_ARGCHK(octets != NULL); | |
176 | |
177 /* scan string for validity */ | |
178 for (x = 0; x < noctets; x++) { | |
179 if (der_teletex_char_encode(octets[x]) == -1) { | |
180 return CRYPT_INVALID_ARG; | |
181 } | |
182 } | |
183 | |
184 if (noctets < 128) { | |
185 /* 16 LL DD DD DD ... */ | |
186 *outlen = 2 + noctets; | |
187 } else if (noctets < 256) { | |
188 /* 16 81 LL DD DD DD ... */ | |
189 *outlen = 3 + noctets; | |
190 } else if (noctets < 65536UL) { | |
191 /* 16 82 LL LL DD DD DD ... */ | |
192 *outlen = 4 + noctets; | |
193 } else if (noctets < 16777216UL) { | |
194 /* 16 83 LL LL LL DD DD DD ... */ | |
195 *outlen = 5 + noctets; | |
196 } else { | |
197 return CRYPT_INVALID_ARG; | |
198 } | |
199 | |
200 return CRYPT_OK; | |
201 } | |
202 | |
203 #endif | |
204 | |
205 | |
206 /* ref: $Format:%D$ */ | |
207 /* git commit: $Format:%H$ */ | |
208 /* commit time: $Format:%ai$ */ |