version 1.71, 2004/07/28 09:40:29 |
version 1.71.2.2, 2005/09/02 03:45:00 |
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#include <openssl/md5.h> |
#include <openssl/md5.h> |
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#if OPENSSL_VERSION_NUMBER < 0x00907000L |
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extern const EVP_CIPHER *evp_rijndael(void); |
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extern void ssh_rijndael_iv(EVP_CIPHER_CTX *, int, u_char *, u_int); |
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#endif |
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extern const EVP_CIPHER *evp_ssh1_bf(void); |
extern const EVP_CIPHER *evp_ssh1_bf(void); |
extern const EVP_CIPHER *evp_ssh1_3des(void); |
extern const EVP_CIPHER *evp_ssh1_3des(void); |
extern void ssh1_3des_iv(EVP_CIPHER_CTX *, int, u_char *, int); |
extern void ssh1_3des_iv(EVP_CIPHER_CTX *, int, u_char *, int); |
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int number; /* for ssh1 only */ |
int number; /* for ssh1 only */ |
u_int block_size; |
u_int block_size; |
u_int key_len; |
u_int key_len; |
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u_int discard_len; |
const EVP_CIPHER *(*evptype)(void); |
const EVP_CIPHER *(*evptype)(void); |
} ciphers[] = { |
} ciphers[] = { |
{ "none", SSH_CIPHER_NONE, 8, 0, EVP_enc_null }, |
{ "none", SSH_CIPHER_NONE, 8, 0, 0, EVP_enc_null }, |
{ "des", SSH_CIPHER_DES, 8, 8, EVP_des_cbc }, |
{ "des", SSH_CIPHER_DES, 8, 8, 0, EVP_des_cbc }, |
{ "3des", SSH_CIPHER_3DES, 8, 16, evp_ssh1_3des }, |
{ "3des", SSH_CIPHER_3DES, 8, 16, 0, evp_ssh1_3des }, |
{ "blowfish", SSH_CIPHER_BLOWFISH, 8, 32, evp_ssh1_bf }, |
{ "blowfish", SSH_CIPHER_BLOWFISH, 8, 32, 0, evp_ssh1_bf }, |
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{ "3des-cbc", SSH_CIPHER_SSH2, 8, 24, EVP_des_ede3_cbc }, |
{ "3des-cbc", SSH_CIPHER_SSH2, 8, 24, 0, EVP_des_ede3_cbc }, |
{ "blowfish-cbc", SSH_CIPHER_SSH2, 8, 16, EVP_bf_cbc }, |
{ "blowfish-cbc", SSH_CIPHER_SSH2, 8, 16, 0, EVP_bf_cbc }, |
{ "cast128-cbc", SSH_CIPHER_SSH2, 8, 16, EVP_cast5_cbc }, |
{ "cast128-cbc", SSH_CIPHER_SSH2, 8, 16, 0, EVP_cast5_cbc }, |
{ "arcfour", SSH_CIPHER_SSH2, 8, 16, EVP_rc4 }, |
{ "arcfour", SSH_CIPHER_SSH2, 8, 16, 0, EVP_rc4 }, |
#if OPENSSL_VERSION_NUMBER < 0x00907000L |
{ "arcfour128", SSH_CIPHER_SSH2, 8, 16, 1536, EVP_rc4 }, |
{ "aes128-cbc", SSH_CIPHER_SSH2, 16, 16, evp_rijndael }, |
{ "arcfour256", SSH_CIPHER_SSH2, 8, 32, 1536, EVP_rc4 }, |
{ "aes192-cbc", SSH_CIPHER_SSH2, 16, 24, evp_rijndael }, |
{ "aes128-cbc", SSH_CIPHER_SSH2, 16, 16, 0, EVP_aes_128_cbc }, |
{ "aes256-cbc", SSH_CIPHER_SSH2, 16, 32, evp_rijndael }, |
{ "aes192-cbc", SSH_CIPHER_SSH2, 16, 24, 0, EVP_aes_192_cbc }, |
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{ "aes256-cbc", SSH_CIPHER_SSH2, 16, 32, 0, EVP_aes_256_cbc }, |
{ "rijndael-cbc@lysator.liu.se", |
{ "rijndael-cbc@lysator.liu.se", |
SSH_CIPHER_SSH2, 16, 32, evp_rijndael }, |
SSH_CIPHER_SSH2, 16, 32, 0, EVP_aes_256_cbc }, |
#else |
{ "aes128-ctr", SSH_CIPHER_SSH2, 16, 16, 0, evp_aes_128_ctr }, |
{ "aes128-cbc", SSH_CIPHER_SSH2, 16, 16, EVP_aes_128_cbc }, |
{ "aes192-ctr", SSH_CIPHER_SSH2, 16, 24, 0, evp_aes_128_ctr }, |
{ "aes192-cbc", SSH_CIPHER_SSH2, 16, 24, EVP_aes_192_cbc }, |
{ "aes256-ctr", SSH_CIPHER_SSH2, 16, 32, 0, evp_aes_128_ctr }, |
{ "aes256-cbc", SSH_CIPHER_SSH2, 16, 32, EVP_aes_256_cbc }, |
{ "acss@openssh.org", SSH_CIPHER_SSH2, 16, 5, 0, EVP_acss }, |
{ "rijndael-cbc@lysator.liu.se", |
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SSH_CIPHER_SSH2, 16, 32, EVP_aes_256_cbc }, |
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#endif |
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{ "aes128-ctr", SSH_CIPHER_SSH2, 16, 16, evp_aes_128_ctr }, |
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{ "aes192-ctr", SSH_CIPHER_SSH2, 16, 24, evp_aes_128_ctr }, |
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{ "aes256-ctr", SSH_CIPHER_SSH2, 16, 32, evp_aes_128_ctr }, |
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{ "acss@openssh.org", SSH_CIPHER_SSH2, 16, 5, EVP_acss }, |
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{ NULL, SSH_CIPHER_INVALID, 0, 0, NULL } |
{ NULL, SSH_CIPHER_INVALID, 0, 0, 0, NULL } |
}; |
}; |
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/*--*/ |
/*--*/ |
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{ |
{ |
Cipher *c; |
Cipher *c; |
for (c = ciphers; c->name != NULL; c++) |
for (c = ciphers; c->name != NULL; c++) |
if (strcasecmp(c->name, name) == 0) |
if (strcmp(c->name, name) == 0) |
return c; |
return c; |
return NULL; |
return NULL; |
} |
} |
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Cipher *c; |
Cipher *c; |
if (name == NULL) |
if (name == NULL) |
return -1; |
return -1; |
c = cipher_by_name(name); |
for (c = ciphers; c->name != NULL; c++) |
return (c==NULL) ? -1 : c->number; |
if (strcasecmp(c->name, name) == 0) |
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return c->number; |
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return -1; |
} |
} |
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char * |
char * |
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static int dowarn = 1; |
static int dowarn = 1; |
const EVP_CIPHER *type; |
const EVP_CIPHER *type; |
int klen; |
int klen; |
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u_char *junk, *discard; |
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if (cipher->number == SSH_CIPHER_DES) { |
if (cipher->number == SSH_CIPHER_DES) { |
if (dowarn) { |
if (dowarn) { |
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fatal("cipher_init: EVP_CipherInit failed for %s", |
fatal("cipher_init: EVP_CipherInit failed for %s", |
cipher->name); |
cipher->name); |
klen = EVP_CIPHER_CTX_key_length(&cc->evp); |
klen = EVP_CIPHER_CTX_key_length(&cc->evp); |
if (klen > 0 && keylen != klen) { |
if (klen > 0 && keylen != (u_int)klen) { |
debug2("cipher_init: set keylen (%d -> %d)", klen, keylen); |
debug2("cipher_init: set keylen (%d -> %d)", klen, keylen); |
if (EVP_CIPHER_CTX_set_key_length(&cc->evp, keylen) == 0) |
if (EVP_CIPHER_CTX_set_key_length(&cc->evp, keylen) == 0) |
fatal("cipher_init: set keylen failed (%d -> %d)", |
fatal("cipher_init: set keylen failed (%d -> %d)", |
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if (EVP_CipherInit(&cc->evp, NULL, (u_char *)key, NULL, -1) == 0) |
if (EVP_CipherInit(&cc->evp, NULL, (u_char *)key, NULL, -1) == 0) |
fatal("cipher_init: EVP_CipherInit: set key failed for %s", |
fatal("cipher_init: EVP_CipherInit: set key failed for %s", |
cipher->name); |
cipher->name); |
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if (cipher->discard_len > 0) { |
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junk = xmalloc(cipher->discard_len); |
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discard = xmalloc(cipher->discard_len); |
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if (EVP_Cipher(&cc->evp, discard, junk, |
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cipher->discard_len) == 0) |
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fatal("evp_crypt: EVP_Cipher failed during discard"); |
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memset(discard, 0, cipher->discard_len); |
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xfree(junk); |
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xfree(discard); |
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} |
} |
} |
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void |
void |
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case SSH_CIPHER_DES: |
case SSH_CIPHER_DES: |
case SSH_CIPHER_BLOWFISH: |
case SSH_CIPHER_BLOWFISH: |
evplen = EVP_CIPHER_CTX_iv_length(&cc->evp); |
evplen = EVP_CIPHER_CTX_iv_length(&cc->evp); |
if (evplen == 0) |
if (evplen <= 0) |
return; |
return; |
if (evplen != len) |
if ((u_int)evplen != len) |
fatal("%s: wrong iv length %d != %d", __func__, |
fatal("%s: wrong iv length %d != %d", __func__, |
evplen, len); |
evplen, len); |
#if OPENSSL_VERSION_NUMBER < 0x00907000L |
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if (c->evptype == evp_rijndael) |
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ssh_rijndael_iv(&cc->evp, 0, iv, len); |
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else |
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#endif |
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if (c->evptype == evp_aes_128_ctr) |
if (c->evptype == evp_aes_128_ctr) |
ssh_aes_ctr_iv(&cc->evp, 0, iv, len); |
ssh_aes_ctr_iv(&cc->evp, 0, iv, len); |
else |
else |
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evplen = EVP_CIPHER_CTX_iv_length(&cc->evp); |
evplen = EVP_CIPHER_CTX_iv_length(&cc->evp); |
if (evplen == 0) |
if (evplen == 0) |
return; |
return; |
#if OPENSSL_VERSION_NUMBER < 0x00907000L |
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if (c->evptype == evp_rijndael) |
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ssh_rijndael_iv(&cc->evp, 1, iv, evplen); |
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else |
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#endif |
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if (c->evptype == evp_aes_128_ctr) |
if (c->evptype == evp_aes_128_ctr) |
ssh_aes_ctr_iv(&cc->evp, 1, iv, evplen); |
ssh_aes_ctr_iv(&cc->evp, 1, iv, evplen); |
else |
else |
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} |
} |
} |
} |
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#if OPENSSL_VERSION_NUMBER < 0x00907000L |
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#define EVP_X_STATE(evp) &(evp).c |
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#define EVP_X_STATE_LEN(evp) sizeof((evp).c) |
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#else |
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#define EVP_X_STATE(evp) (evp).cipher_data |
#define EVP_X_STATE(evp) (evp).cipher_data |
#define EVP_X_STATE_LEN(evp) (evp).cipher->ctx_size |
#define EVP_X_STATE_LEN(evp) (evp).cipher->ctx_size |
#endif |
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int |
int |
cipher_get_keycontext(const CipherContext *cc, u_char *dat) |
cipher_get_keycontext(const CipherContext *cc, u_char *dat) |