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pki: Add pki_do_sign().

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This commit is contained in:
Andreas Schneider
2011-08-07 18:22:19 +02:00
parent 38d00c0e7a
commit f81444bd57
5 changed files with 125 additions and 91 deletions
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46
src/pki_crypto.c
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@@ -35,6 +35,7 @@
#include "libssh/session.h"
#include "libssh/callbacks.h"
#include "libssh/pki.h"
#include "libssh/keys.h"
static int pem_get_password(char *buf, int size, int rwflag, void *userdata) {
ssh_session session = userdata;
@@ -218,4 +219,49 @@ fail:
return NULL;
}
struct signature_struct *pki_do_sign(ssh_key privatekey,
const unsigned char *hash) {
struct signature_struct *sign;
sign = malloc(sizeof(SIGNATURE));
if (sign == NULL) {
return NULL;
}
sign->type = privatekey->type;
switch(privatekey->type) {
case SSH_KEYTYPE_DSS:
sign->dsa_sign = DSA_do_sign(hash + 1, SHA_DIGEST_LEN,
privatekey->dsa);
if (sign->dsa_sign == NULL) {
signature_free(sign);
return NULL;
}
#ifdef DEBUG_CRYPTO
ssh_print_bignum("r", sign->dsa_sign->r);
ssh_print_bignum("s", sign->dsa_sign->s);
#endif
sign->rsa_sign = NULL;
break;
case SSH_KEYTYPE_RSA:
case SSH_KEYTYPE_RSA1:
sign->rsa_sign = RSA_do_sign(hash + 1, SHA_DIGEST_LEN,
privatekey->rsa);
if (sign->rsa_sign == NULL) {
signature_free(sign);
return NULL;
}
sign->dsa_sign = NULL;
break;
case SSH_KEYTYPE_ECDSA:
case SSH_KEYTYPE_UNKNOWN:
signature_free(sign);
return NULL;
}
return sign;
}
#endif /* _PKI_CRYPTO_H */