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sshkey_sigtype() function to return the type of a
signature; ok markus@

OpenBSD-Commit-ID: d3772b065ad6eed97285589bfb544befed9032e8
This commit is contained in:
djm@openbsd.org 2017-12-18 02:22:29 +00:00 committed by Damien Miller
parent 4cdc5956f2
commit 931c78dfd7
2 changed files with 28 additions and 2 deletions
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27
sshkey.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sshkey.c,v 1.57 2017/10/13 06:24:51 djm Exp $ */
/* $OpenBSD: sshkey.c,v 1.58 2017/12/18 02:22:29 djm Exp $ */
/*
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
* Copyright (c) 2008 Alexander von Gernler. All rights reserved.
@ -2049,6 +2049,31 @@ sshkey_froms(struct sshbuf *buf, struct sshkey **keyp)
return r;
}
int
sshkey_sigtype(const u_char *sig, size_t siglen, char **sigtypep)
{
int r;
struct sshbuf *b = NULL;
char *sigtype = NULL;
if (sigtypep != NULL)
*sigtypep = NULL;
if ((b = sshbuf_from(sig, siglen)) == NULL)
return SSH_ERR_ALLOC_FAIL;
if ((r = sshbuf_get_cstring(b, &sigtype, NULL)) != 0)
goto out;
/* success */
if (sigtypep != NULL) {
*sigtypep = sigtype;
sigtype = NULL;
}
r = 0;
out:
free(sigtype);
sshbuf_free(b);
return r;
}
int
sshkey_sign(const struct sshkey *key,
u_char **sigp, size_t *lenp,

3
sshkey.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sshkey.h,v 1.21 2017/07/01 13:50:45 djm Exp $ */
/* $OpenBSD: sshkey.h,v 1.22 2017/12/18 02:22:29 djm Exp $ */
/*
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
@ -174,6 +174,7 @@ int sshkey_puts(const struct sshkey *, struct sshbuf *);
int sshkey_plain_to_blob(const struct sshkey *, u_char **, size_t *);
int sshkey_putb_plain(const struct sshkey *, struct sshbuf *);
int sshkey_sigtype(const u_char *, size_t, char **);
int sshkey_sign(const struct sshkey *, u_char **, size_t *,
const u_char *, size_t, const char *, u_int);
int sshkey_verify(const struct sshkey *, const u_char *, size_t,