crypto/openssh/sshconnect1.c

72 	BIGNUM *challenge;
83 	if ((challenge = BN_new()) == NULL)
113 		/* Otherwise it should have sent a challenge. */
118 		packet_get_bignum(challenge);
121 		debug("Received RSA challenge from server.");
123 		/* Ask the agent to decrypt the challenge. */
125 		    challenge, session_id, response)) != 0) {
132 			    "challenge: %s", ssh_err(r));
135 		debug("Sending response to RSA challenge.");
137 		/* Send the decrypted challenge back to the server. */
164 	BN_clear_free(challenge);
169  * Computes the proper response to a RSA challenge, and sends the response to
173 respond_to_rsa_challenge(BIGNUM * challenge, RSA * prv)
179 	/* Decrypt the challenge using the private key. */
181 	if (rsa_private_decrypt(challenge, challenge, prv) != 0)
186 	/* The response is MD5 of decrypted challenge plus session id. */
187 	len = BN_num_bytes(challenge);
190 		    "respond_to_rsa_challenge: bad challenge length %d", len);
193 	BN_bn2bin(challenge, buf + sizeof(buf) - len);
201 	debug("Sending response to host key RSA challenge.");
222 	BIGNUM *challenge;
251 	/* Otherwise, the server should respond with a challenge. */
255 	/* Get the challenge from the packet. */
256 	if ((challenge = BN_new()) == NULL)
258 	packet_get_bignum(challenge);
261 	debug("Received RSA challenge from server.");
316 		BN_clear_free(challenge);
320 	/* Compute and send a response to the challenge. */
321 	respond_to_rsa_challenge(challenge, private->rsa);
327 	/* We no longer need the challenge. */
328 	BN_clear_free(challenge);
350 	BIGNUM *challenge;
372 	/* Otherwise, the server should respond with a challenge. */
376 	/* Get the challenge from the packet. */
377 	if ((challenge = BN_new()) == NULL)
379 	packet_get_bignum(challenge);
382 	debug("Received RSA challenge for host key from server.");
384 	/* Compute a response to the challenge. */
385 	respond_to_rsa_challenge(challenge, host_key->rsa);
387 	/* We no longer need the challenge. */
388 	BN_clear_free(challenge);
403  * Tries to authenticate with any string-based challenge/response system.
412 	char *challenge, *response;
414 	debug("Doing challenge response authentication.");
417 		/* request a challenge */
429 			debug("No challenge.");
432 		challenge = packet_get_string(&clen);
434 		snprintf(prompt, sizeof prompt, "%s%s", challenge,
435 		    strchr(challenge, '\n') ? "" : "\nResponse: ");
436 		free(challenge);
750 	/* Try challenge response authentication if the server supports it. */