diff options
Diffstat (limited to 'crypto/openssh/authfd.c')
| -rw-r--r-- | crypto/openssh/authfd.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/crypto/openssh/authfd.c b/crypto/openssh/authfd.c index eaa1426..a634bcb 100644 --- a/crypto/openssh/authfd.c +++ b/crypto/openssh/authfd.c @@ -1,4 +1,4 @@ -/* $OpenBSD: authfd.c,v 1.98 2015/07/03 03:43:18 djm Exp $ */ +/* $OpenBSD: authfd.c,v 1.100 2015/12/04 16:41:28 markus Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -426,11 +426,24 @@ ssh_decrypt_challenge(int sock, struct sshkey* key, BIGNUM *challenge, } #endif +/* encode signature algoritm in flag bits, so we can keep the msg format */ +static u_int +agent_encode_alg(struct sshkey *key, const char *alg) +{ + if (alg != NULL && key->type == KEY_RSA) { + if (strcmp(alg, "rsa-sha2-256") == 0) + return SSH_AGENT_RSA_SHA2_256; + else if (strcmp(alg, "rsa-sha2-512") == 0) + return SSH_AGENT_RSA_SHA2_512; + } + return 0; +} + /* ask agent to sign data, returns err.h code on error, 0 on success */ int ssh_agent_sign(int sock, struct sshkey *key, u_char **sigp, size_t *lenp, - const u_char *data, size_t datalen, u_int compat) + const u_char *data, size_t datalen, const char *alg, u_int compat) { struct sshbuf *msg; u_char *blob = NULL, type; @@ -449,12 +462,13 @@ ssh_agent_sign(int sock, struct sshkey *key, return SSH_ERR_ALLOC_FAIL; if ((r = sshkey_to_blob(key, &blob, &blen)) != 0) goto out; + flags |= agent_encode_alg(key, alg); if ((r = sshbuf_put_u8(msg, SSH2_AGENTC_SIGN_REQUEST)) != 0 || (r = sshbuf_put_string(msg, blob, blen)) != 0 || (r = sshbuf_put_string(msg, data, datalen)) != 0 || (r = sshbuf_put_u32(msg, flags)) != 0) goto out; - if ((r = ssh_request_reply(sock, msg, msg) != 0)) + if ((r = ssh_request_reply(sock, msg, msg)) != 0) goto out; if ((r = sshbuf_get_u8(msg, &type)) != 0) goto out; |
