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Pageant is now able to avoid asking for the passphrase when asked to

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load a key that is already loaded. This makes command lines such as
`pageant mykey -c mycommand' almost infinitely more useful.

[originally from svn r1522]
This commit is contained in:
Simon Tatham
2001-12-30 15:58:17 +00:00
parent 320ee10afb
commit cf356a9a5f
6 changed files with 350 additions and 95 deletions
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55
sshrsa.c
View File

@ -12,6 +12,17 @@
#include "ssh.h"
#define GET_32BIT(cp) \
(((unsigned long)(unsigned char)(cp)[0] << 24) | \
((unsigned long)(unsigned char)(cp)[1] << 16) | \
((unsigned long)(unsigned char)(cp)[2] << 8) | \
((unsigned long)(unsigned char)(cp)[3]))
#define PUT_32BIT(cp, value) { \
(cp)[0] = (unsigned char)((value) >> 24); \
(cp)[1] = (unsigned char)((value) >> 16); \
(cp)[2] = (unsigned char)((value) >> 8); \
(cp)[3] = (unsigned char)(value); }
int makekey(unsigned char *data, struct RSAKey *result,
unsigned char **keystr, int order)
@ -217,6 +228,38 @@ int rsa_verify(struct RSAKey *key)
return 1;
}
/* Public key blob as used by Pageant: exponent before modulus. */
unsigned char *rsa_public_blob(struct RSAKey *key, int *len)
{
int length, pos;
unsigned char *ret;
length = (ssh1_bignum_length(key->modulus) +
ssh1_bignum_length(key->exponent) + 4);
ret = smalloc(length);
PUT_32BIT(ret, bignum_bitcount(key->modulus));
pos = 4;
pos += ssh1_write_bignum(ret + pos, key->exponent);
pos += ssh1_write_bignum(ret + pos, key->modulus);
*len = length;
return ret;
}
/* Given a public blob, determine its length. */
int rsa_public_blob_len(void *data)
{
unsigned char *p = (unsigned char *)data;
int ret;
p += 4; /* length word */
p += ssh1_read_bignum(p, NULL); /* exponent */
p += ssh1_read_bignum(p, NULL); /* modulus */
return p - (unsigned char *)data;
}
void freersakey(struct RSAKey *key)
{
if (key->modulus)
@ -233,18 +276,6 @@ void freersakey(struct RSAKey *key)
* Implementation of the ssh-rsa signing key type.
*/
#define GET_32BIT(cp) \
(((unsigned long)(unsigned char)(cp)[0] << 24) | \
((unsigned long)(unsigned char)(cp)[1] << 16) | \
((unsigned long)(unsigned char)(cp)[2] << 8) | \
((unsigned long)(unsigned char)(cp)[3]))
#define PUT_32BIT(cp, value) { \
(cp)[0] = (unsigned char)((value) >> 24); \
(cp)[1] = (unsigned char)((value) >> 16); \
(cp)[2] = (unsigned char)((value) >> 8); \
(cp)[3] = (unsigned char)(value); }
static void getstring(char **data, int *datalen, char **p, int *length)
{
*p = NULL;