static void torture_pki_signature(void **state)
{
ssh_signature sig;
(void) state; /* unused */
sig = ssh_signature_new();
assert_true(sig != NULL);
ssh_signature_free(sig);
}
ssh_string ssh_srv_pki_do_sign_sessionid(ssh_session session,
const ssh_key privkey)
{
struct ssh_crypto_struct *crypto;
ssh_signature sig = NULL;
ssh_string sig_blob;
int rc;
if (session == NULL || privkey == NULL || !ssh_key_is_private(privkey)) {
return NULL;
}
crypto = session->next_crypto ? session->next_crypto :
session->current_crypto;
if (crypto->secret_hash == NULL){
ssh_set_error(session,SSH_FATAL,"Missing secret_hash");
return NULL;
}
if (privkey->type == SSH_KEYTYPE_ECDSA) {
#ifdef HAVE_ECC
unsigned char ehash[EVP_DIGEST_LEN] = {0};
uint32_t elen;
evp(privkey->ecdsa_nid, crypto->secret_hash, crypto->digest_len,
ehash, &elen);
#ifdef DEBUG_CRYPTO
ssh_print_hexa("Hash being signed", ehash, elen);
#endif
sig = pki_do_sign_sessionid(privkey, ehash, elen);
if (sig == NULL) {
return NULL;
}
#endif
} else if (privkey->type == SSH_KEYTYPE_ED25519) {
sig = ssh_signature_new();
if (sig == NULL){
return NULL;
}
sig->type = privkey->type;
sig->type_c = privkey->type_c;
rc = pki_ed25519_sign(privkey,
sig,
crypto->secret_hash,
crypto->digest_len);
if (rc != SSH_OK){
ssh_signature_free(sig);
sig = NULL;
}
} else {
unsigned char hash[SHA_DIGEST_LEN] = {0};
SHACTX ctx;
ctx = sha1_init();
if (ctx == NULL) {
return NULL;
}
sha1_update(ctx, crypto->secret_hash, crypto->digest_len);
sha1_final(hash, ctx);
#ifdef DEBUG_CRYPTO
ssh_print_hexa("Hash being signed", hash, SHA_DIGEST_LEN);
#endif
sig = pki_do_sign_sessionid(privkey, hash, SHA_DIGEST_LEN);
if (sig == NULL) {
return NULL;
}
}
rc = ssh_pki_export_signature_blob(sig, &sig_blob);
ssh_signature_free(sig);
if (rc < 0) {
return NULL;
}
return sig_blob;
}
