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kex: Add simple DES support for SSHv1.

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This commit is contained in:
Dmitriy Kuznetsov
2012-09-07 12:19:43 +02:00
committed by Andreas Schneider
parent a3f83e7274
commit 320951f42f
7 changed files with 94 additions and 11 deletions
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36
src/libcrypto.c
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@@ -415,6 +415,30 @@ static void des3_1_decrypt(struct ssh_cipher_struct *cipher, void *in,
#endif
}
static int des1_set_key(struct ssh_cipher_struct *cipher, void *key, void *IV){
if(!cipher->key){
if (alloc_key(cipher) < 0) {
return -1;
}
DES_set_odd_parity(key);
DES_set_key_unchecked(key,cipher->key);
}
cipher->IV=IV;
return 0;
}
static void des1_1_encrypt(struct ssh_cipher_struct *cipher, void *in, void *out,
unsigned long len){
DES_ncbc_encrypt(in, out, len, cipher->key, cipher->IV, 1);
}
static void des1_1_decrypt(struct ssh_cipher_struct *cipher, void *in, void *out,
unsigned long len){
DES_ncbc_encrypt(in,out,len, cipher->key, cipher->IV, 0);
}
#endif /* HAS_DES */
/*
@@ -539,6 +563,18 @@ static struct ssh_cipher_struct ssh_ciphertab[] = {
des3_1_encrypt,
des3_1_decrypt
},
{
"des-cbc-ssh1",
8,
sizeof(DES_key_schedule),
NULL,
NULL,
64,
des1_set_key,
des1_set_key,
des1_1_encrypt,
des1_1_decrypt
},
#endif /* HAS_DES */
{
NULL,