dropbear: ed25519.c annotate

annotate ed25519.c @ 1679:90fffce0ee99

Add linter for #ifdef

author	Matt Johnston <matt@ucc.asn.au>
date	Sun, 24 May 2020 13:15:24 +0800
parents	d32bcb5c557d
children	41a0ff8d5a89

rev	line source
1659 d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	1 /*
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	2 * Dropbear - a SSH2 server
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	3 *
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	5 * All rights reserved.
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	6 *
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	7 * Permission is hereby granted, free of charge, to any person obtaining a copy
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	8 * of this software and associated documentation files (the "Software"), to deal
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	9 * in the Software without restriction, including without limitation the rights
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	11 * copies of the Software, and to permit persons to whom the Software is
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	12 * furnished to do so, subject to the following conditions:
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	13 *
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	14 * The above copyright notice and this permission notice shall be included in
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	15 * all copies or substantial portions of the Software.
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	16 *
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	23 * SOFTWARE. */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	24
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	25 /* Perform Ed25519 operations on data, including reading keys, signing and
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	26 * verification. */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	27
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	28 #include "includes.h"
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	29 #include "dbutil.h"
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	30 #include "buffer.h"
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	31 #include "ssh.h"
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	32 #include "curve25519.h"
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	33 #include "ed25519.h"
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	34
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	35 #if DROPBEAR_ED25519
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	36
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	37 /* Load a public ed25519 key from a buffer, initialising the values.
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	38 * The key will have the same format as buf_put_ed25519_key.
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	39 * These should be freed with ed25519_key_free.
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	40 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	41 int buf_get_ed25519_pub_key(buffer buf, dropbear_ed25519_key key) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	42
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	43 unsigned int len;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	44
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	45 TRACE(("enter buf_get_ed25519_pub_key"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	46 dropbear_assert(key != NULL);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	47
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	48 buf_incrpos(buf, 4+SSH_SIGNKEY_ED25519_LEN); /* int + "ssh-ed25519" */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	49
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	50 len = buf_getint(buf);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	51 if (len != CURVE25519_LEN \|\| buf->len - buf->pos < len) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	52 TRACE(("leave buf_get_ed25519_pub_key: failure"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	53 return DROPBEAR_FAILURE;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	54 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	55
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	56 m_burn(key->priv, CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	57 memcpy(key->pub, buf_getptr(buf, CURVE25519_LEN), CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	58 buf_incrpos(buf, CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	59
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	60 TRACE(("leave buf_get_ed25519_pub_key: success"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	61 return DROPBEAR_SUCCESS;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	62 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	63
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	64 /* Same as buf_get_ed25519_pub_key, but reads private key at the end.
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	65 * Loads a public and private ed25519 key from a buffer
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	66 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	67 int buf_get_ed25519_priv_key(buffer buf, dropbear_ed25519_key key) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	68
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	69 unsigned int len;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	70
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	71 TRACE(("enter buf_get_ed25519_priv_key"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	72 dropbear_assert(key != NULL);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	73
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	74 buf_incrpos(buf, 4+SSH_SIGNKEY_ED25519_LEN); /* int + "ssh-ed25519" */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	75
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	76 len = buf_getint(buf);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	77 if (len != CURVE25519_LEN*2 \|\| buf->len - buf->pos < len) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	78 TRACE(("leave buf_get_ed25519_priv_key: failure"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	79 return DROPBEAR_FAILURE;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	80 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	81
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	82 memcpy(key->priv, buf_getptr(buf, CURVE25519_LEN), CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	83 buf_incrpos(buf, CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	84 memcpy(key->pub, buf_getptr(buf, CURVE25519_LEN), CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	85 buf_incrpos(buf, CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	86
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	87 TRACE(("leave buf_get_ed25519_pub_key: success"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	88 return DROPBEAR_SUCCESS;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	89 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	90
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	91 /* Clear and free the memory used by a public or private key */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	92 void ed25519_key_free(dropbear_ed25519_key *key) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	93
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	94 TRACE2(("enter ed25519_key_free"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	95
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	96 if (key == NULL) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	97 TRACE2(("leave ed25519_key_free: key == NULL"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	98 return;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	99 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	100 m_burn(key->priv, CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	101 m_free(key);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	102
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	103 TRACE2(("leave rsa_key_free"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	104 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	105
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	106 /* Put the public ed25519 key into the buffer in the required format */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	107 void buf_put_ed25519_pub_key(buffer buf, const dropbear_ed25519_key key) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	108
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	109 TRACE(("enter buf_put_ed25519_pub_key"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	110 dropbear_assert(key != NULL);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	111
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	112 buf_putstring(buf, SSH_SIGNKEY_ED25519, SSH_SIGNKEY_ED25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	113 buf_putstring(buf, key->pub, CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	114
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	115 TRACE(("leave buf_put_ed25519_pub_key"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	116 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	117
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	118 /* Put the public and private ed25519 key into the buffer in the required format */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	119 void buf_put_ed25519_priv_key(buffer buf, const dropbear_ed25519_key key) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	120
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	121 TRACE(("enter buf_put_ed25519_priv_key"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	122 dropbear_assert(key != NULL);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	123
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	124 buf_putstring(buf, SSH_SIGNKEY_ED25519, SSH_SIGNKEY_ED25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	125 buf_putint(buf, CURVE25519_LEN*2);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	126 buf_putbytes(buf, key->priv, CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	127 buf_putbytes(buf, key->pub, CURVE25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	128
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	129 TRACE(("leave buf_put_ed25519_priv_key"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	130 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	131
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	132 /* Sign the data presented with key, writing the signature contents
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	133 * to the buffer */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	134 void buf_put_ed25519_sign(buffer* buf, const dropbear_ed25519_key key, const buffer data_buf) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	135
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	136 unsigned char s[64];
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	137 unsigned long slen = sizeof(s);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	138
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	139 TRACE(("enter buf_put_ed25519_sign"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	140 dropbear_assert(key != NULL);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	141
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	142 if (dropbear_ed25519_sign(data_buf->data, data_buf->len,
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	143 s, &slen, key->priv, key->pub) == 0) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	144 buf_putstring(buf, SSH_SIGNKEY_ED25519, SSH_SIGNKEY_ED25519_LEN);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	145 buf_putstring(buf, s, slen);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	146 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	147
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	148 TRACE(("leave buf_put_ed25519_sign"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	149 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	150
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	151 #if DROPBEAR_SIGNKEY_VERIFY
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	152 /* Verify a signature in buf, made on data by the key given.
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	153 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	154 int buf_ed25519_verify(buffer buf, const dropbear_ed25519_key key, const buffer *data_buf) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	155
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	156 int ret = DROPBEAR_FAILURE;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	157 unsigned char *s;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	158 unsigned long slen;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	159
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	160 TRACE(("enter buf_ed25519_verify"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	161 dropbear_assert(key != NULL);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	162
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	163 slen = buf_getint(buf);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	164 if (slen != 64 \|\| buf->len - buf->pos < slen) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	165 TRACE(("bad size"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	166 goto out;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	167 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	168 s = buf_getptr(buf, slen);
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	169
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	170 if (dropbear_ed25519_verify(data_buf->data, data_buf->len,
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	171 s, slen, key->pub) == 0) {
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	172 /* signature is valid */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	173 TRACE(("success!"))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	174 ret = DROPBEAR_SUCCESS;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	175 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	176
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	177 out:
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	178 TRACE(("leave buf_ed25519_verify: ret %d", ret))
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	179 return ret;
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	180 }
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	181
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	182 #endif /* DROPBEAR_SIGNKEY_VERIFY */
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	183
d32bcb5c557d Add Ed25519 support (#91) Vladislav Grishenko <themiron@users.noreply.github.com> parents: diff changeset	184 #endif /* DROPBEAR_ED25519 */

Mercurial > dropbear

annotate ed25519.c @ 1679:90fffce0ee99