diff options
| author | djm@openbsd.org <djm@openbsd.org> | 2022-10-28 00:36:31 +0000 |
|---|---|---|
| committer | Damien Miller <djm@mindrot.org> | 2022-10-28 12:46:56 +1100 |
| commit | 1e78844ae2b2dc01ba735d5ae740904c57e13685 (patch) | |
| tree | 9aaea84e13b641b1cc04dd9446d4af46c0a0919b /ssh-rsa.c | |
| parent | 25de1c01a8b9a2c8ab9b1da22444a03e89c982de (diff) | |
| download | openssh-git-1e78844ae2b2dc01ba735d5ae740904c57e13685.tar.gz | |
upstream: factor out sshkey_equal_public()
feedback/ok markus@
OpenBSD-Commit-ID: 1368ba114cb37732fe6ec3d89c7e6d27ea6fdc94
Diffstat (limited to 'ssh-rsa.c')
| -rw-r--r-- | ssh-rsa.c | 24 |
1 files changed, 23 insertions, 1 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: ssh-rsa.c,v 1.69 2022/10/28 00:35:40 djm Exp $ */ +/* $OpenBSD: ssh-rsa.c,v 1.70 2022/10/28 00:36:31 djm Exp $ */ /* * Copyright (c) 2000, 2003 Markus Friedl <markus@openbsd.org> * @@ -65,6 +65,27 @@ ssh_rsa_cleanup(struct sshkey *k) k->rsa = NULL; } +static int +ssh_rsa_equal(const struct sshkey *a, const struct sshkey *b) +{ + const BIGNUM *rsa_e_a, *rsa_n_a; + const BIGNUM *rsa_e_b, *rsa_n_b; + + if (a->rsa == NULL || b->rsa == NULL) + return 0; + RSA_get0_key(a->rsa, &rsa_n_a, &rsa_e_a, NULL); + RSA_get0_key(b->rsa, &rsa_n_b, &rsa_e_b, NULL); + if (rsa_e_a == NULL || rsa_e_b == NULL) + return 0; + if (rsa_n_a == NULL || rsa_n_b == NULL) + return 0; + if (BN_cmp(rsa_e_a, rsa_e_b) != 0) + return 0; + if (BN_cmp(rsa_n_a, rsa_n_b) != 0) + return 0; + return 1; +} + static const char * rsa_hash_alg_ident(int hash_alg) { @@ -477,6 +498,7 @@ static const struct sshkey_impl_funcs sshkey_rsa_funcs = { /* .size = */ ssh_rsa_size, /* .alloc = */ ssh_rsa_alloc, /* .cleanup = */ ssh_rsa_cleanup, + /* .equal = */ ssh_rsa_equal, }; const struct sshkey_impl sshkey_rsa_impl = { |