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Add support for the OpenSSH SSH2 agent protocol.

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[originally from svn r976]
This commit is contained in:
Simon Tatham
2001-03-03 15:31:35 +00:00
parent deccfaa3ef
commit 1f168926d7
5 changed files with 480 additions and 48 deletions
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35
sshrsa.c
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@ -208,7 +208,7 @@ static void *rsa2_newkey(char *data, int len) {
if (!rsa) return NULL;
getstring(&data, &len, &p, &slen);
if (!p || memcmp(p, "ssh-rsa", 7)) {
if (!p || slen != 7 || memcmp(p, "ssh-rsa", 7)) {
sfree(rsa);
return NULL;
}
@ -309,6 +309,38 @@ static void *rsa2_createkey(unsigned char *pub_blob, int pub_len,
return rsa;
}
static void *rsa2_openssh_createkey(unsigned char **blob, int *len) {
char **b = (char **)blob;
struct RSAKey *rsa;
char *p;
int slen;
rsa = smalloc(sizeof(struct RSAKey));
if (!rsa) return NULL;
rsa->comment = NULL;
rsa->modulus = getmp(b, len);
rsa->exponent = getmp(b, len);
rsa->private_exponent = getmp(b, len);
rsa->iqmp = getmp(b, len);
rsa->p = getmp(b, len);
rsa->q = getmp(b, len);
if (!rsa->modulus || !rsa->exponent || !rsa->private_exponent ||
!rsa->iqmp || !rsa->p || !rsa->q) {
sfree(rsa->modulus);
sfree(rsa->exponent);
sfree(rsa->private_exponent);
sfree(rsa->iqmp);
sfree(rsa->p);
sfree(rsa->q);
sfree(rsa);
return NULL;
}
return rsa;
}
static char *rsa2_fingerprint(void *key) {
struct RSAKey *rsa = (struct RSAKey *)key;
struct MD5Context md5c;
@ -455,6 +487,7 @@ const struct ssh_signkey ssh_rsa = {
rsa2_public_blob,
rsa2_private_blob,
rsa2_createkey,
rsa2_openssh_createkey,
rsa2_fingerprint,
rsa2_verifysig,
rsa2_sign,