Mercurial > dropbear

annotate sk-ecdsa.c @ 1857:6022df862942

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use DSCP for IP QoS traffic classes The previous TOS values are deprecated and not used by modern traffic classifiers. This sets AF21 for "interactive" traffic (with a tty). Non-tty traffic sets AF11 - that indicates high throughput but is not lowest priority (which would be CS1 or LE). This differs from the CS1 used by OpenSSH, it lets interactive git over SSH have higher priority than background least effort traffic. Dropbear's settings here should be suitable with the diffservs used by CAKE qdisc.
author Matt Johnston <matt@ucc.asn.au>
date Tue, 25 Jan 2022 17:32:20 +0800
parents 35d504d59c05
children 333688ec53d0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1855
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
1 #include "includes.h"
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
2
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
3 #if DROPBEAR_SK_ECDSA
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
4
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
5 #include "dbutil.h"
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
6 #include "ecc.h"
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
7 #include "ecdsa.h"
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
8 #include "sk-ecdsa.h"
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
9
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
10 int buf_sk_ecdsa_verify(buffer *buf, const ecc_key *key, const buffer *data_buf, const char* app, unsigned int applen) {
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
11 hash_state hs;
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
12 unsigned char subhash[SHA256_HASH_SIZE];
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
13 buffer *sk_buffer = NULL, *sig_buffer = NULL;
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
14 unsigned char flags;
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
15 unsigned int counter;
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
16 int ret;
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
17
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
18 TRACE(("buf_sk_ecdsa_verify"))
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
19
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
20 /* from https://github.com/openssh/openssh-portable/blob/master/PROTOCOL.u2f */
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
21 /* ecdsa signature to verify (r, s) */
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
22 sig_buffer = buf_getbuf(buf);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
23
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
24 flags = buf_getbyte (buf);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
25 counter = buf_getint (buf);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
26 /* create the message to be signed */
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
27 sk_buffer = buf_new (2*SHA256_HASH_SIZE+5);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
28 sha256_init (&hs);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
29 sha256_process (&hs, app, applen);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
30 sha256_done (&hs, subhash);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
31 buf_putbytes (sk_buffer, subhash, sizeof (subhash));
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
32 buf_putbyte (sk_buffer, flags);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
33 buf_putint (sk_buffer, counter);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
34 sha256_init (&hs);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
35 sha256_process (&hs, data_buf->data, data_buf->len);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
36 sha256_done (&hs, subhash);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
37 buf_putbytes (sk_buffer, subhash, sizeof (subhash));
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
38
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
39 ret = buf_ecdsa_verify(sig_buffer, key, sk_buffer);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
40 buf_free(sk_buffer);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
41 buf_free(sig_buffer);
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
42
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
43 TRACE(("leave buf_sk_ecdsa_verify, ret=%d", ret))
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
44 return ret;
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
45 }
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
46
35d504d59c05 Implement server-side support for sk-ecdsa U2F-backed keys (#142)
egor-duda <egor-duda@users.noreply.github.com>
parents:
diff changeset
47 #endif /* DROPBEAR_SK_ECDSA */