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| author | djm@openbsd.org <djm@openbsd.org> | 2020-06-23 01:44:27 +0200 |
|---|---|---|
| committer | Damien Miller <djm@mindrot.org> | 2020-06-26 07:18:07 +0200 |
| commit | 37f2da069c0619f2947fb92785051d82882876d7 (patch) | |
| tree | c283884a3351eef1c1660f57fd06fd654124ffc7 /ssh-ecdsa-sk.c | |
| parent | upstream: updated argument name for -P in first synopsis was (diff) | |
| download | openssh-37f2da069c0619f2947fb92785051d82882876d7.tar.xz openssh-37f2da069c0619f2947fb92785051d82882876d7.zip | |
upstream: some clarifying comments
OpenBSD-Commit-ID: 5268479000fd97bfa30ab819f3517139daa054a2
Diffstat (limited to 'ssh-ecdsa-sk.c')
| -rw-r--r-- | ssh-ecdsa-sk.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/ssh-ecdsa-sk.c b/ssh-ecdsa-sk.c index 0004a73ca..c6927ecb2 100644 --- a/ssh-ecdsa-sk.c +++ b/ssh-ecdsa-sk.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ssh-ecdsa-sk.c,v 1.7 2020/06/22 05:58:35 djm Exp $ */ +/* $OpenBSD: ssh-ecdsa-sk.c,v 1.8 2020/06/22 23:44:27 djm Exp $ */ /* * Copyright (c) 2000 Markus Friedl. All rights reserved. * Copyright (c) 2010 Damien Miller. All rights reserved. @@ -97,6 +97,13 @@ webauthn_check_prepare_hash(const u_char *data, size_t datalen, r = SSH_ERR_INVALID_FORMAT; goto out; } + + /* + * Prepare the preamble to clientData that we expect, poking the + * challenge and origin into their canonical positions in the + * structure. The crossOrigin flag and any additional extension + * fields present are ignored. + */ #define WEBAUTHN_0 "{\"type\":\"webauthn.get\",\"challenge\":\"" #define WEBAUTHN_1 "\",\"origin\":\"" #define WEBAUTHN_2 "\"" @@ -113,7 +120,7 @@ webauthn_check_prepare_hash(const u_char *data, size_t datalen, fprintf(stderr, "%s: expected clientData premable:\n", __func__); sshbuf_dump(m, stderr); #endif - /* Check that the supplied clientData matches what we expect */ + /* Check that the supplied clientData has the preamble we expect */ if ((r = sshbuf_cmp(wrapper, 0, sshbuf_ptr(m), sshbuf_len(m))) != 0) goto out; |