Mercurial > dropbear

comparison common-algo.c @ 297:79bf1023cf11 agent-client

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propagate from branch 'au.asn.ucc.matt.dropbear' (head 0501e6f661b5415eb76f3b312d183c3adfbfb712) to branch 'au.asn.ucc.matt.dropbear.cli-agent' (head 01038174ec27245b51bd43a66c01ad930880f67b)
author Matt Johnston <matt@ucc.asn.au>
date Tue, 21 Mar 2006 16:20:59 +0000
parents 89ace56293f6
children 64abb124763d 0e69e948caba
comparison
equal deleted inserted replaced
225:ca7e76d981d9 297:79bf1023cf11
30 * decide which ciphers/hashes/compression/signing to use during key exchange*/ 30 * decide which ciphers/hashes/compression/signing to use during key exchange*/
31 31
32 /* Mappings for ciphers, parameters are 32 /* Mappings for ciphers, parameters are
33 {&cipher_desc, keysize, blocksize} */ 33 {&cipher_desc, keysize, blocksize} */
34 34
35 #ifdef DROPBEAR_AES256_CBC
36 static const struct dropbear_cipher dropbear_aes256 =
37 {&aes_desc, 32, 16};
38 #endif
35 #ifdef DROPBEAR_AES128_CBC 39 #ifdef DROPBEAR_AES128_CBC
36 const struct dropbear_cipher dropbear_aes128 = 40 static const struct dropbear_cipher dropbear_aes128 =
37 {&aes_desc, 16, 16}; 41 {&aes_desc, 16, 16};
38 #endif 42 #endif
39 #ifdef DROPBEAR_BLOWFISH_CBC 43 #ifdef DROPBEAR_BLOWFISH_CBC
40 const struct dropbear_cipher dropbear_blowfish = 44 static const struct dropbear_cipher dropbear_blowfish =
41 {&blowfish_desc, 16, 8}; 45 {&blowfish_desc, 16, 8};
42 #endif 46 #endif
47 #ifdef DROPBEAR_TWOFISH256_CBC
48 static const struct dropbear_cipher dropbear_twofish256 =
49 {&twofish_desc, 32, 16};
50 #endif
43 #ifdef DROPBEAR_TWOFISH128_CBC 51 #ifdef DROPBEAR_TWOFISH128_CBC
44 const struct dropbear_cipher dropbear_twofish128 = 52 static const struct dropbear_cipher dropbear_twofish128 =
45 {&twofish_desc, 16, 16}; 53 {&twofish_desc, 16, 16};
46 #endif 54 #endif
47 #ifdef DROPBEAR_3DES_CBC 55 #ifdef DROPBEAR_3DES_CBC
48 const struct dropbear_cipher dropbear_3des = 56 static const struct dropbear_cipher dropbear_3des =
49 {&des3_desc, 24, 8}; 57 {&des3_desc, 24, 8};
50 #endif 58 #endif
51 59
52 /* used to indicate no encryption, as defined in rfc2410 */ 60 /* used to indicate no encryption, as defined in rfc2410 */
53 const struct dropbear_cipher dropbear_nocipher = 61 const struct dropbear_cipher dropbear_nocipher =
55 63
56 /* Mapping of ssh hashes to libtomcrypt hashes, including keysize etc. 64 /* Mapping of ssh hashes to libtomcrypt hashes, including keysize etc.
57 {&hash_desc, keysize, hashsize} */ 65 {&hash_desc, keysize, hashsize} */
58 66
59 #ifdef DROPBEAR_SHA1_HMAC 67 #ifdef DROPBEAR_SHA1_HMAC
60 const struct dropbear_hash dropbear_sha1 = 68 static const struct dropbear_hash dropbear_sha1 =
61 {&sha1_desc, 20, 20}; 69 {&sha1_desc, 20, 20};
62 #endif 70 #endif
71 #ifdef DROPBEAR_SHA1_96_HMAC
72 static const struct dropbear_hash dropbear_sha1_96 =
73 {&sha1_desc, 20, 12};
74 #endif
63 #ifdef DROPBEAR_MD5_HMAC 75 #ifdef DROPBEAR_MD5_HMAC
64 const struct dropbear_hash dropbear_md5 = 76 static const struct dropbear_hash dropbear_md5 =
65 {&md5_desc, 16, 16}; 77 {&md5_desc, 16, 16};
66 #endif 78 #endif
67 79
68 const struct dropbear_hash dropbear_nohash = 80 const struct dropbear_hash dropbear_nohash =
69 {NULL, 16, 0}; /* used initially */ 81 {NULL, 16, 0}; /* used initially */
73 85
74 algo_type sshciphers[] = { 86 algo_type sshciphers[] = {
75 #ifdef DROPBEAR_AES128_CBC 87 #ifdef DROPBEAR_AES128_CBC
76 {"aes128-cbc", 0, (void*)&dropbear_aes128, 1}, 88 {"aes128-cbc", 0, (void*)&dropbear_aes128, 1},
77 #endif 89 #endif
90 #ifdef DROPBEAR_3DES_CBC
91 {"3des-cbc", 0, (void*)&dropbear_3des, 1},
92 #endif
93 #ifdef DROPBEAR_AES256_CBC
94 {"aes256-cbc", 0, (void*)&dropbear_aes256, 1},
95 #endif
96 #ifdef DROPBEAR_TWOFISH256_CBC
97 {"twofish256-cbc", 0, (void*)&dropbear_twofish256, 1},
98 {"twofish-cbc", 0, (void*)&dropbear_twofish256, 1},
99 #endif
100 #ifdef DROPBEAR_TWOFISH128_CBC
101 {"twofish128-cbc", 0, (void*)&dropbear_twofish128, 1},
102 #endif
78 #ifdef DROPBEAR_BLOWFISH_CBC 103 #ifdef DROPBEAR_BLOWFISH_CBC
79 {"blowfish-cbc", 0, (void*)&dropbear_blowfish, 1}, 104 {"blowfish-cbc", 0, (void*)&dropbear_blowfish, 1},
80 #endif 105 #endif
81 #ifdef DROPBEAR_TWOFISH128_CBC
82 {"twofish-cbc", 0, (void*)&dropbear_twofish128, 1},
83 #endif
84 #ifdef DROPBEAR_3DES_CBC
85 {"3des-cbc", 0, (void*)&dropbear_3des, 1},
86 #endif
87 {NULL, 0, NULL, 0} 106 {NULL, 0, NULL, 0}
88 }; 107 };
89 108
90 algo_type sshhashes[] = { 109 algo_type sshhashes[] = {
110 #ifdef DROPBEAR_SHA1_96_HMAC
111 {"hmac-sha1-96", 0, (void*)&dropbear_sha1_96, 1},
112 #endif
91 #ifdef DROPBEAR_SHA1_HMAC 113 #ifdef DROPBEAR_SHA1_HMAC
92 {"hmac-sha1", 0, (void*)&dropbear_sha1, 1}, 114 {"hmac-sha1", 0, (void*)&dropbear_sha1, 1},
93 #endif 115 #endif
94 #ifdef DROPBEAR_MD5_HMAC 116 #ifdef DROPBEAR_MD5_HMAC
95 {"hmac-md5", 0, (void*)&dropbear_md5, 1}, 117 {"hmac-md5", 0, (void*)&dropbear_md5, 1},
96 #endif 118 #endif
97 {NULL, 0, NULL, 0} 119 {NULL, 0, NULL, 0}
98 }; 120 };
99 121
100 algo_type sshcompress[] = { 122 algo_type sshcompress[] = {
101 {"none", DROPBEAR_COMP_NONE, NULL, 1},
102 #ifndef DISABLE_ZLIB 123 #ifndef DISABLE_ZLIB
103 {"zlib", DROPBEAR_COMP_ZLIB, NULL, 1}, 124 {"zlib", DROPBEAR_COMP_ZLIB, NULL, 1},
104 #endif 125 #endif
126 {"none", DROPBEAR_COMP_NONE, NULL, 1},
105 {NULL, 0, NULL, 0} 127 {NULL, 0, NULL, 0}
106 }; 128 };
107 129
108 algo_type sshhostkey[] = { 130 algo_type sshhostkey[] = {
109 #ifdef DROPBEAR_RSA 131 #ifdef DROPBEAR_RSA
124 /* Register the compiled in ciphers. 146 /* Register the compiled in ciphers.
125 * This should be run before using any of the ciphers/hashes */ 147 * This should be run before using any of the ciphers/hashes */
126 void crypto_init() { 148 void crypto_init() {
127 149
128 const struct ltc_cipher_descriptor *regciphers[] = { 150 const struct ltc_cipher_descriptor *regciphers[] = {
129 #ifdef DROPBEAR_AES128_CBC 151 #ifdef DROPBEAR_AES_CBC
130 &aes_desc, 152 &aes_desc,
131 #endif 153 #endif
132 #ifdef DROPBEAR_BLOWFISH_CBC 154 #ifdef DROPBEAR_BLOWFISH_CBC
133 &blowfish_desc, 155 &blowfish_desc,
134 #endif 156 #endif
135 #ifdef DROPBEAR_TWOFISH128_CBC 157 #ifdef DROPBEAR_TWOFISH_CBC
136 &twofish_desc, 158 &twofish_desc,
137 #endif 159 #endif
138 #ifdef DROPBEAR_3DES_CBC 160 #ifdef DROPBEAR_3DES_CBC
139 &des3_desc, 161 &des3_desc,
140 #endif 162 #endif
185 207
186 208
187 /* Output a comma separated list of algorithms to a buffer */ 209 /* Output a comma separated list of algorithms to a buffer */
188 void buf_put_algolist(buffer * buf, algo_type localalgos[]) { 210 void buf_put_algolist(buffer * buf, algo_type localalgos[]) {
189 211
190 unsigned int pos = 0, i, len; 212 unsigned int i, len;
191 char str[50]; /* enough for local algo storage */ 213 unsigned int donefirst = 0;
192 214 buffer *algolist = NULL;
215
216 algolist = buf_new(100);
193 for (i = 0; localalgos[i].name != NULL; i++) { 217 for (i = 0; localalgos[i].name != NULL; i++) {
194 if (localalgos[i].usable) { 218 if (localalgos[i].usable) {
195 /* Avoid generating a trailing comma */ 219 if (donefirst)
196 if (pos) 220 buf_putbyte(algolist, ',');
197 str[pos++] = ','; 221 donefirst = 1;
198 len = strlen(localalgos[i].name); 222 len = strlen(localalgos[i].name);
199 memcpy(&str[pos], localalgos[i].name, len); 223 buf_putbytes(algolist, localalgos[i].name, len);
200 pos += len; 224 }
201 } 225 }
202 } 226 buf_putstring(buf, algolist->data, algolist->len);
203 str[pos]=0; 227 buf_free(algolist);
204 /* Debug this */
205 TRACE(("buf_put_algolist: %s", str))
206 buf_putstring(buf, str, pos);
207 } 228 }