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upstream: use RSA/SHA256 when testing usability of private key in

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agent; with/ok dtucker

OpenBSD-Commit-ID: fe1382e2fdf23fcae631308e72342bad56066a56
This commit is contained in:
djm@openbsd.org 2023-03-08 00:05:58 +00:00 committed by Damien Miller
parent 27fd251bc9
commit 147ae57d4d
No known key found for this signature in database
1 changed files with 6 additions and 3 deletions
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9
ssh-add.c
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@ -1,4 +1,4 @@
/* $OpenBSD: ssh-add.c,v 1.166 2022/06/18 02:17:16 dtucker Exp $ */
/* $OpenBSD: ssh-add.c,v 1.167 2023/03/08 00:05:58 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -477,6 +477,7 @@ test_key(int agent_fd, const char *filename)
{
struct sshkey *key = NULL;
u_char *sig = NULL;
const char *alg = NULL;
size_t slen = 0;
int r, ret = -1;
char data[1024];
@ -485,14 +486,16 @@ test_key(int agent_fd, const char *filename)
error_r(r, "Couldn't read public key %s", filename);
return -1;
}
if (sshkey_type_plain(key->type) == KEY_RSA)
alg = "rsa-sha2-256";
arc4random_buf(data, sizeof(data));
if ((r = ssh_agent_sign(agent_fd, key, &sig, &slen, data, sizeof(data),
NULL, 0)) != 0) {
alg, 0)) != 0) {
error_r(r, "Agent signature failed for %s", filename);
goto done;
}
if ((r = sshkey_verify(key, sig, slen, data, sizeof(data),
NULL, 0, NULL)) != 0) {
alg, 0, NULL)) != 0) {
error_r(r, "Signature verification failed for %s", filename);
goto done;
}