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/*
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Meanwhile - Unofficial Lotus Sametime Community Client Library
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Copyright (C) 2004 Christopher (siege) O'Brien
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdlib.h>
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#include <time.h>
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#include "mpi/mpi.h"
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#include "mw_channel.h"
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#include "mw_cipher.h"
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#include "mw_debug.h"
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#include "mw_session.h"
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struct mwMpi {
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mw_mp_int i;
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};
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/** From RFC2268 */
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static guchar PT[] = {
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0xD9, 0x78, 0xF9, 0xC4, 0x19, 0xDD, 0xB5, 0xED,
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0x28, 0xE9, 0xFD, 0x79, 0x4A, 0xA0, 0xD8, 0x9D,
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0xC6, 0x7E, 0x37, 0x83, 0x2B, 0x76, 0x53, 0x8E,
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|
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0x62, 0x4C, 0x64, 0x88, 0x44, 0x8B, 0xFB, 0xA2,
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0x17, 0x9A, 0x59, 0xF5, 0x87, 0xB3, 0x4F, 0x13,
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0x61, 0x45, 0x6D, 0x8D, 0x09, 0x81, 0x7D, 0x32,
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0xBD, 0x8F, 0x40, 0xEB, 0x86, 0xB7, 0x7B, 0x0B,
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0xF0, 0x95, 0x21, 0x22, 0x5C, 0x6B, 0x4E, 0x82,
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0x54, 0xD6, 0x65, 0x93, 0xCE, 0x60, 0xB2, 0x1C,
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0x73, 0x56, 0xC0, 0x14, 0xA7, 0x8C, 0xF1, 0xDC,
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|
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0x12, 0x75, 0xCA, 0x1F, 0x3B, 0xBE, 0xE4, 0xD1,
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0x42, 0x3D, 0xD4, 0x30, 0xA3, 0x3C, 0xB6, 0x26,
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0x6F, 0xBF, 0x0E, 0xDA, 0x46, 0x69, 0x07, 0x57,
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0x27, 0xF2, 0x1D, 0x9B, 0xBC, 0x94, 0x43, 0x03,
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0xF8, 0x11, 0xC7, 0xF6, 0x90, 0xEF, 0x3E, 0xE7,
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0x06, 0xC3, 0xD5, 0x2F, 0xC8, 0x66, 0x1E, 0xD7,
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0x08, 0xE8, 0xEA, 0xDE, 0x80, 0x52, 0xEE, 0xF7,
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0x84, 0xAA, 0x72, 0xAC, 0x35, 0x4D, 0x6A, 0x2A,
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0x96, 0x1A, 0xD2, 0x71, 0x5A, 0x15, 0x49, 0x74,
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0x4B, 0x9F, 0xD0, 0x5E, 0x04, 0x18, 0xA4, 0xEC,
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0xC2, 0xE0, 0x41, 0x6E, 0x0F, 0x51, 0xCB, 0xCC,
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0x24, 0x91, 0xAF, 0x50, 0xA1, 0xF4, 0x70, 0x39,
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0x99, 0x7C, 0x3A, 0x85, 0x23, 0xB8, 0xB4, 0x7A,
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|
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0xFC, 0x02, 0x36, 0x5B, 0x25, 0x55, 0x97, 0x31,
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|
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0x2D, 0x5D, 0xFA, 0x98, 0xE3, 0x8A, 0x92, 0xAE,
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|
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16808d |
0x05, 0xDF, 0x29, 0x10, 0x67, 0x6C, 0xBA, 0xC9,
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|
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16808d |
0xD3, 0x00, 0xE6, 0xCF, 0xE1, 0x9E, 0xA8, 0x2C,
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|
Packit |
16808d |
0x63, 0x16, 0x01, 0x3F, 0x58, 0xE2, 0x89, 0xA9,
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0x0D, 0x38, 0x34, 0x1B, 0xAB, 0x33, 0xFF, 0xB0,
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0xBB, 0x48, 0x0C, 0x5F, 0xB9, 0xB1, 0xCD, 0x2E,
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0xC5, 0xF3, 0xDB, 0x47, 0xE5, 0xA5, 0x9C, 0x77,
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0x0A, 0xA6, 0x20, 0x68, 0xFE, 0x7F, 0xC1, 0xAD
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};
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/** prime number used in DH exchange */
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static guchar dh_prime[] = {
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0xCF, 0x84, 0xAF, 0xCE, 0x86, 0xDD, 0xFA, 0x52,
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0x7F, 0x13, 0x6D, 0x10, 0x35, 0x75, 0x28, 0xEE,
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0xFB, 0xA0, 0xAF, 0xEF, 0x80, 0x8F, 0x29, 0x17,
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0x4E, 0x3B, 0x6A, 0x9E, 0x97, 0x00, 0x01, 0x71,
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0x7C, 0x8F, 0x10, 0x6C, 0x41, 0xC1, 0x61, 0xA6,
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0xCE, 0x91, 0x05, 0x7B, 0x34, 0xDA, 0x62, 0xCB,
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|
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0xB8, 0x7B, 0xFD, 0xC1, 0xB3, 0x5C, 0x1B, 0x91,
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0x0F, 0xEA, 0x72, 0x24, 0x9D, 0x56, 0x6B, 0x9F
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};
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|
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/** base used in DH exchange */
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#define DH_BASE 3
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struct mwMpi *mwMpi_new() {
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struct mwMpi *i;
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i = g_new0(struct mwMpi, 1);
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mw_mp_init(&i->i);
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return i;
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}
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|
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void mwMpi_free(struct mwMpi *i) {
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if(! i) return;
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mw_mp_clear(&i->i);
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g_free(i);
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}
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static void mwInitDHPrime(mw_mp_int *i) {
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mw_mp_init(i);
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mw_mp_read_unsigned_bin(i, dh_prime, 64);
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}
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void mwMpi_setDHPrime(struct mwMpi *i) {
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g_return_if_fail(i != NULL);
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mw_mp_read_unsigned_bin(&i->i, dh_prime, 64);
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}
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static void mwInitDHBase(mw_mp_int *i) {
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mw_mp_init(i);
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mw_mp_set_int(i, DH_BASE);
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}
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void mwMpi_setDHBase(struct mwMpi *i) {
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g_return_if_fail(i != NULL);
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mw_mp_set_int(&i->i, DH_BASE);
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}
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static void mw_mp_set_rand(mw_mp_int *i, guint bits) {
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size_t len, l;
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guchar *buf;
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l = len = (bits / 8) + 1;
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buf = g_malloc(len);
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|
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srand(time(NULL));
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while(l--) buf[l] = rand() & 0xff;
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buf[0] &= (0xff >> (8 - (bits % 8)));
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mw_mp_read_unsigned_bin(i, buf, len);
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g_free(buf);
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}
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static void mwDHRandKeypair(mw_mp_int *private_key, mw_mp_int *public_key) {
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mw_mp_int prime, base;
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mwInitDHPrime(&prime);
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mwInitDHBase(&base);
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|
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mw_mp_set_rand(private_key, 512);
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mw_mp_exptmod(&base, private_key, &prime, public_key);
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mw_mp_clear(&prime);
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mw_mp_clear(&base);
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}
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void mwMpi_randDHKeypair(struct mwMpi *private_key, struct mwMpi *public_key) {
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g_return_if_fail(private_key != NULL);
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g_return_if_fail(public_key != NULL);
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|
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mwDHRandKeypair(&private_key->i, &public_key->i);
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}
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static void mwDHCalculateShared(mw_mp_int *shared_key, mw_mp_int *remote_key,
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mw_mp_int *private_key) {
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mw_mp_int prime;
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|
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mwInitDHPrime(&prime);
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mw_mp_exptmod(remote_key, private_key, &prime, shared_key);
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|
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mw_mp_clear(&prime);
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}
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|
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void mwMpi_calculateDHShared(struct mwMpi *shared_key, struct mwMpi *remote_key,
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struct mwMpi *private_key) {
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|
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g_return_if_fail(shared_key != NULL);
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g_return_if_fail(remote_key != NULL);
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g_return_if_fail(private_key != NULL);
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|
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mwDHCalculateShared(&shared_key->i, &remote_key->i, &private_key->i);
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}
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|
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static void mwDHImportKey(mw_mp_int *key, struct mwOpaque *o) {
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mw_mp_read_unsigned_bin(key, o->data, o->len);
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|
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}
|
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|
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void mwMpi_import(struct mwMpi *i, struct mwOpaque *o) {
|
|
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g_return_if_fail(i != NULL);
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|
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g_return_if_fail(o != NULL);
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|
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|
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mwDHImportKey(&i->i, o);
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}
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|
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static void mwDHExportKey(mw_mp_int *key, struct mwOpaque *o) {
|
|
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o->len = mw_mp_unsigned_bin_size(key);
|
|
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o->data = g_malloc0(o->len);
|
|
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mw_mp_to_unsigned_bin(key, o->data);
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|
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}
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|
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void mwMpi_export(struct mwMpi *i, struct mwOpaque *o) {
|
|
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g_return_if_fail(i != NULL);
|
|
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g_return_if_fail(o != NULL);
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|
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|
|
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mwDHExportKey(&i->i, o);
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|
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}
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|
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|
|
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void mwKeyRandom(guchar *key, gsize keylen) {
|
|
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16808d |
g_return_if_fail(key != NULL);
|
|
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16808d |
|
|
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16808d |
srand(time(NULL));
|
|
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16808d |
while(keylen--) key[keylen] = rand() & 0xff;
|
|
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}
|
|
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|
|
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16808d |
|
|
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void mwIV_init(guchar *iv) {
|
|
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16808d |
iv[0] = 0x01;
|
|
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16808d |
iv[1] = 0x23;
|
|
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16808d |
iv[2] = 0x45;
|
|
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16808d |
iv[3] = 0x67;
|
|
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16808d |
iv[4] = 0x89;
|
|
Packit |
16808d |
iv[5] = 0xab;
|
|
Packit |
16808d |
iv[6] = 0xcd;
|
|
Packit |
16808d |
iv[7] = 0xef;
|
|
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16808d |
}
|
|
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16808d |
|
|
Packit |
16808d |
|
|
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/* This does not seem to produce the same results as normal RC2 key
|
|
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16808d |
expansion would, but it works, so eh. It might be smart to farm
|
|
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16808d |
this out to mozilla or openssl */
|
|
Packit |
16808d |
void mwKeyExpand(int *ekey, const guchar *key, gsize keylen) {
|
|
Packit |
16808d |
guchar tmp[128];
|
|
Packit |
16808d |
int i, j;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_return_if_fail(keylen > 0);
|
|
Packit |
16808d |
g_return_if_fail(key != NULL);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(keylen > 128) keylen = 128;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* fill the first chunk with what key bytes we have */
|
|
Packit |
16808d |
for(i = keylen; i--; tmp[i] = key[i]);
|
|
Packit |
16808d |
/* memcpy(tmp, key, keylen); */
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* build the remaining key from the given data */
|
|
Packit |
16808d |
for(i = 0; keylen < 128; i++) {
|
|
Packit |
16808d |
tmp[keylen] = PT[ (tmp[keylen - 1] + tmp[i]) & 0xff ];
|
|
Packit |
16808d |
keylen++;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
tmp[0] = PT[ tmp[0] & 0xff ];
|
|
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16808d |
|
|
Packit |
16808d |
for(i = 0, j = 0; i < 64; i++) {
|
|
Packit |
16808d |
ekey[i] = (tmp[j] & 0xff) | (tmp[j+1] << 8);
|
|
Packit |
16808d |
j += 2;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* normal RC2 encryption given a full 128-byte (as 64 ints) key */
|
|
Packit |
16808d |
static void mwEncryptBlock(const int *ekey, guchar *out) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
int a, b, c, d;
|
|
Packit |
16808d |
int i, j;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
a = (out[7] << 8) | (out[6] & 0xff);
|
|
Packit |
16808d |
b = (out[5] << 8) | (out[4] & 0xff);
|
|
Packit |
16808d |
c = (out[3] << 8) | (out[2] & 0xff);
|
|
Packit |
16808d |
d = (out[1] << 8) | (out[0] & 0xff);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
for(i = 0; i < 16; i++) {
|
|
Packit |
16808d |
j = i * 4;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
d += ((c & (a ^ 0xffff)) + (b & a) + ekey[j++]);
|
|
Packit |
16808d |
d = (d << 1) | (d >> 15 & 0x0001);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c += ((b & (d ^ 0xffff)) + (a & d) + ekey[j++]);
|
|
Packit |
16808d |
c = (c << 2) | (c >> 14 & 0x0003);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
b += ((a & (c ^ 0xffff)) + (d & c) + ekey[j++]);
|
|
Packit |
16808d |
b = (b << 3) | (b >> 13 & 0x0007);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
a += ((d & (b ^ 0xffff)) + (c & b) + ekey[j++]);
|
|
Packit |
16808d |
a = (a << 5) | (a >> 11 & 0x001f);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(i == 4 || i == 10) {
|
|
Packit |
16808d |
d += ekey[a & 0x003f];
|
|
Packit |
16808d |
c += ekey[d & 0x003f];
|
|
Packit |
16808d |
b += ekey[c & 0x003f];
|
|
Packit |
16808d |
a += ekey[b & 0x003f];
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
*out++ = d & 0xff;
|
|
Packit |
16808d |
*out++ = (d >> 8) & 0xff;
|
|
Packit |
16808d |
*out++ = c & 0xff;
|
|
Packit |
16808d |
*out++ = (c >> 8) & 0xff;
|
|
Packit |
16808d |
*out++ = b & 0xff;
|
|
Packit |
16808d |
*out++ = (b >> 8) & 0xff;
|
|
Packit |
16808d |
*out++ = a & 0xff;
|
|
Packit |
16808d |
*out++ = (a >> 8) & 0xff;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
void mwEncryptExpanded(const int *ekey, guchar *iv,
|
|
Packit |
16808d |
struct mwOpaque *in_data,
|
|
Packit |
16808d |
struct mwOpaque *out_data) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
guchar *i = in_data->data;
|
|
Packit |
16808d |
gsize i_len = in_data->len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
guchar *o;
|
|
Packit |
16808d |
gsize o_len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
int x, y;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* pad upwards to a multiple of 8 */
|
|
Packit |
16808d |
/* o_len = (i_len & -8) + 8; */
|
|
Packit |
16808d |
o_len = i_len + (8 - (i_len % 8));
|
|
Packit |
16808d |
o = g_malloc(o_len);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
out_data->data = o;
|
|
Packit |
16808d |
out_data->len = o_len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* figure out the amount of padding */
|
|
Packit |
16808d |
y = o_len - i_len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* copy in to out, and write padding bytes */
|
|
Packit |
16808d |
for(x = i_len; x--; o[x] = i[x]);
|
|
Packit |
16808d |
for(x = i_len; x < o_len; o[x++] = y);
|
|
Packit |
16808d |
/* memcpy(o, i, i_len);
|
|
Packit |
16808d |
memset(o + i_len, y, y); */
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* encrypt in blocks */
|
|
Packit |
16808d |
for(x = o_len; x > 0; x -= 8) {
|
|
Packit |
16808d |
for(y = 8; y--; o[y] ^= iv[y]);
|
|
Packit |
16808d |
mwEncryptBlock(ekey, o);
|
|
Packit |
16808d |
for(y = 8; y--; iv[y] = o[y]);
|
|
Packit |
16808d |
/* memcpy(iv, o, 8); */
|
|
Packit |
16808d |
o += 8;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
void mwEncrypt(const guchar *key, gsize keylen, guchar *iv,
|
|
Packit |
16808d |
struct mwOpaque *in, struct mwOpaque *out) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
int ekey[64];
|
|
Packit |
16808d |
mwKeyExpand(ekey, key, keylen);
|
|
Packit |
16808d |
mwEncryptExpanded(ekey, iv, in, out);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static void mwDecryptBlock(const int *ekey, guchar *out) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
int a, b, c, d;
|
|
Packit |
16808d |
int i, j;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
a = (out[7] << 8) | (out[6] & 0xff);
|
|
Packit |
16808d |
b = (out[5] << 8) | (out[4] & 0xff);
|
|
Packit |
16808d |
c = (out[3] << 8) | (out[2] & 0xff);
|
|
Packit |
16808d |
d = (out[1] << 8) | (out[0] & 0xff);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
for(i = 16; i--; ) {
|
|
Packit |
16808d |
j = i * 4 + 3;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
a = (a << 11) | (a >> 5 & 0x07ff);
|
|
Packit |
16808d |
a -= ((d & (b ^ 0xffff)) + (c & b) + ekey[j--]);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
b = (b << 13) | (b >> 3 & 0x1fff);
|
|
Packit |
16808d |
b -= ((a & (c ^ 0xffff)) + (d & c) + ekey[j--]);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c = (c << 14) | (c >> 2 & 0x3fff);
|
|
Packit |
16808d |
c -= ((b & (d ^ 0xffff)) + (a & d) + ekey[j--]);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
d = (d << 15) | (d >> 1 & 0x7fff);
|
|
Packit |
16808d |
d -= ((c & (a ^ 0xffff)) + (b & a) + ekey[j--]);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(i == 5 || i == 11) {
|
|
Packit |
16808d |
a -= ekey[b & 0x003f];
|
|
Packit |
16808d |
b -= ekey[c & 0x003f];
|
|
Packit |
16808d |
c -= ekey[d & 0x003f];
|
|
Packit |
16808d |
d -= ekey[a & 0x003f];
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
*out++ = d & 0xff;
|
|
Packit |
16808d |
*out++ = (d >> 8) & 0xff;
|
|
Packit |
16808d |
*out++ = c & 0xff;
|
|
Packit |
16808d |
*out++ = (c >> 8) & 0xff;
|
|
Packit |
16808d |
*out++ = b & 0xff;
|
|
Packit |
16808d |
*out++ = (b >> 8) & 0xff;
|
|
Packit |
16808d |
*out++ = a & 0xff;
|
|
Packit |
16808d |
*out++ = (a >> 8) & 0xff;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
void mwDecryptExpanded(const int *ekey, guchar *iv,
|
|
Packit |
16808d |
struct mwOpaque *in_data,
|
|
Packit |
16808d |
struct mwOpaque *out_data) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
guchar *i = in_data->data;
|
|
Packit |
16808d |
gsize i_len = in_data->len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
guchar *o;
|
|
Packit |
16808d |
gsize o_len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
int x, y;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(i_len % 8) {
|
|
Packit |
16808d |
/* this doesn't check to ensure that in_data->len is a multiple of
|
|
Packit |
16808d |
8, which is damn well ought to be. */
|
|
Packit |
16808d |
g_warning("attempting decryption of mis-sized data, %u bytes",
|
|
Packit |
16808d |
(guint) i_len);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
o = g_malloc(i_len);
|
|
Packit |
16808d |
o_len = i_len;
|
|
Packit |
16808d |
for(x = i_len; x--; o[x] = i[x]);
|
|
Packit |
16808d |
/* memcpy(o, i, i_len); */
|
|
Packit |
16808d |
|
|
Packit |
16808d |
out_data->data = o;
|
|
Packit |
16808d |
out_data->len = o_len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
for(x = o_len; x > 0; x -= 8) {
|
|
Packit |
16808d |
/* decrypt a block */
|
|
Packit |
16808d |
mwDecryptBlock(ekey, o);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* modify the initialization vector */
|
|
Packit |
16808d |
for(y = 8; y--; o[y] ^= iv[y]);
|
|
Packit |
16808d |
for(y = 8; y--; iv[y] = i[y]);
|
|
Packit |
16808d |
/* memcpy(iv, i, 8); */
|
|
Packit |
16808d |
i += 8;
|
|
Packit |
16808d |
o += 8;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* shorten the length by the value of the filler in the padding
|
|
Packit |
16808d |
bytes */
|
|
Packit |
16808d |
out_data->len -= *(o - 1);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
void mwDecrypt(const guchar *key, gsize keylen, guchar *iv,
|
|
Packit |
16808d |
struct mwOpaque *in, struct mwOpaque *out) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
int ekey[64];
|
|
Packit |
16808d |
mwKeyExpand(ekey, key, keylen);
|
|
Packit |
16808d |
mwDecryptExpanded(ekey, iv, in, out);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipher_RC2_40 {
|
|
Packit |
16808d |
struct mwCipher cipher;
|
|
Packit |
16808d |
int session_key[64];
|
|
Packit |
16808d |
gboolean ready;
|
|
Packit |
16808d |
};
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_40 {
|
|
Packit |
16808d |
struct mwCipherInstance instance;
|
|
Packit |
16808d |
int incoming_key[64];
|
|
Packit |
16808d |
guchar outgoing_iv[8];
|
|
Packit |
16808d |
guchar incoming_iv[8];
|
|
Packit |
16808d |
};
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static const char *get_name_RC2_40() {
|
|
Packit |
16808d |
return "RC2/40 Cipher";
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static const char *get_desc_RC2_40() {
|
|
Packit |
16808d |
return "RC2, 40-bit effective key";
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static int encrypt_RC2_40(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwOpaque *data) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_40 *cir;
|
|
Packit |
16808d |
struct mwCipher_RC2_40 *cr;
|
|
Packit |
16808d |
struct mwOpaque o = { 0, 0 };
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cir = (struct mwCipherInstance_RC2_40 *) ci;
|
|
Packit |
16808d |
cr = (struct mwCipher_RC2_40 *) ci->cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwEncryptExpanded(cr->session_key, cir->outgoing_iv, data, &o);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwOpaque_clear(data);
|
|
Packit |
16808d |
data->data = o.data;
|
|
Packit |
16808d |
data->len = o.len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return 0;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static int decrypt_RC2_40(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwOpaque *data) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_40 *cir;
|
|
Packit |
16808d |
struct mwCipher_RC2_40 *cr;
|
|
Packit |
16808d |
struct mwOpaque o = { 0, 0 };
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cir = (struct mwCipherInstance_RC2_40 *) ci;
|
|
Packit |
16808d |
cr = (struct mwCipher_RC2_40 *) ci->cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwDecryptExpanded(cir->incoming_key, cir->incoming_iv, data, &o);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwOpaque_clear(data);
|
|
Packit |
16808d |
data->data = o.data;
|
|
Packit |
16808d |
data->len = o.len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return 0;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static struct mwCipherInstance *
|
|
Packit |
16808d |
new_instance_RC2_40(struct mwCipher *cipher,
|
|
Packit |
16808d |
struct mwChannel *chan) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipher_RC2_40 *cr;
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_40 *cir;
|
|
Packit |
16808d |
struct mwCipherInstance *ci;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cr = (struct mwCipher_RC2_40 *) cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* a bit of lazy initialization here */
|
|
Packit |
16808d |
if(! cr->ready) {
|
|
Packit |
16808d |
struct mwLoginInfo *info = mwSession_getLoginInfo(cipher->session);
|
|
Packit |
16808d |
mwKeyExpand(cr->session_key, (guchar *) info->login_id, 5);
|
|
Packit |
16808d |
cr->ready = TRUE;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cir = g_new0(struct mwCipherInstance_RC2_40, 1);
|
|
Packit |
16808d |
ci = &cir->instance;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
ci->cipher = cipher;
|
|
Packit |
16808d |
ci->channel = chan;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwIV_init(cir->incoming_iv);
|
|
Packit |
16808d |
mwIV_init(cir->outgoing_iv);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return ci;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static struct mwEncryptItem *new_item_RC2_40(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
struct mwEncryptItem *e;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
e = g_new0(struct mwEncryptItem, 1);
|
|
Packit |
16808d |
e->id = mwCipher_RC2_40;
|
|
Packit |
16808d |
return e;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static struct mwEncryptItem *
|
|
Packit |
16808d |
offer_RC2_40(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
return new_item_RC2_40(ci);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static void accepted_RC2_40(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwEncryptItem *item) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_40 *cir;
|
|
Packit |
16808d |
struct mwLoginInfo *info;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cir = (struct mwCipherInstance_RC2_40 *) ci;
|
|
Packit |
16808d |
info = mwChannel_getUser(ci->channel);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(info->login_id) {
|
|
Packit |
16808d |
mwKeyExpand(cir->incoming_key, (guchar *) info->login_id, 5);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static struct mwEncryptItem *
|
|
Packit |
16808d |
accept_RC2_40(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
accepted_RC2_40(ci, NULL);
|
|
Packit |
16808d |
return new_item_RC2_40(ci);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipher *mwCipher_new_RC2_40(struct mwSession *s) {
|
|
Packit |
16808d |
struct mwCipher_RC2_40 *cr = g_new0(struct mwCipher_RC2_40, 1);
|
|
Packit |
16808d |
struct mwCipher *c = &cr->cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c->session = s;
|
|
Packit |
16808d |
c->type = mwCipher_RC2_40;
|
|
Packit |
16808d |
c->get_name = get_name_RC2_40;
|
|
Packit |
16808d |
c->get_desc = get_desc_RC2_40;
|
|
Packit |
16808d |
c->new_instance = new_instance_RC2_40;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c->offer = offer_RC2_40;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c->accepted = accepted_RC2_40;
|
|
Packit |
16808d |
c->accept = accept_RC2_40;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c->encrypt = encrypt_RC2_40;
|
|
Packit |
16808d |
c->decrypt = decrypt_RC2_40;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return c;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipher_RC2_128 {
|
|
Packit |
16808d |
struct mwCipher cipher;
|
|
Packit |
16808d |
mw_mp_int private_key;
|
|
Packit |
16808d |
struct mwOpaque public_key;
|
|
Packit |
16808d |
};
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_128 {
|
|
Packit |
16808d |
struct mwCipherInstance instance;
|
|
Packit |
16808d |
int shared[64]; /* shared secret determined via DH exchange */
|
|
Packit |
16808d |
guchar outgoing_iv[8];
|
|
Packit |
16808d |
guchar incoming_iv[8];
|
|
Packit |
16808d |
};
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static const char *get_name_RC2_128() {
|
|
Packit |
16808d |
return "RC2/128 Cipher";
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static const char *get_desc_RC2_128() {
|
|
Packit |
16808d |
return "RC2, DH shared secret key";
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static struct mwCipherInstance *
|
|
Packit |
16808d |
new_instance_RC2_128(struct mwCipher *cipher,
|
|
Packit |
16808d |
struct mwChannel *chan) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipher_RC2_128 *cr;
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_128 *cir;
|
|
Packit |
16808d |
struct mwCipherInstance *ci;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cr = (struct mwCipher_RC2_128 *) cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cir = g_new0(struct mwCipherInstance_RC2_128, 1);
|
|
Packit |
16808d |
ci = &cir->instance;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
ci->cipher = cipher;
|
|
Packit |
16808d |
ci->channel = chan;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwIV_init(cir->incoming_iv);
|
|
Packit |
16808d |
mwIV_init(cir->outgoing_iv);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return ci;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static void offered_RC2_128(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwEncryptItem *item) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mw_mp_int remote_key;
|
|
Packit |
16808d |
mw_mp_int shared;
|
|
Packit |
16808d |
struct mwOpaque sho = { 0, 0 };
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipher *c;
|
|
Packit |
16808d |
struct mwCipher_RC2_128 *cr;
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_128 *cir;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c = ci->cipher;
|
|
Packit |
16808d |
cr = (struct mwCipher_RC2_128 *) c;
|
|
Packit |
16808d |
cir = (struct mwCipherInstance_RC2_128 *) ci;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mw_mp_init(&remote_key);
|
|
Packit |
16808d |
mw_mp_init(&shared);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwDHImportKey(&remote_key, &item->info);
|
|
Packit |
16808d |
mwDHCalculateShared(&shared, &remote_key, &cr->private_key);
|
|
Packit |
16808d |
mwDHExportKey(&shared, &sho);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
/* key expanded from the last 16 bytes of the DH shared secret. This
|
|
Packit |
16808d |
took me forever to figure out. 16 bytes is 128 bit. */
|
|
Packit |
16808d |
/* the sh_len-16 is important, because the key len could
|
|
Packit |
16808d |
hypothetically start with 8bits or more unset, meaning the
|
|
Packit |
16808d |
exported key might be less than 64 bytes in length */
|
|
Packit |
16808d |
mwKeyExpand(cir->shared, sho.data+(sho.len-16), 16);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mw_mp_clear(&remote_key);
|
|
Packit |
16808d |
mw_mp_clear(&shared);
|
|
Packit |
16808d |
mwOpaque_clear(&sho);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static struct mwEncryptItem *
|
|
Packit |
16808d |
offer_RC2_128(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipher *c;
|
|
Packit |
16808d |
struct mwCipher_RC2_128 *cr;
|
|
Packit |
16808d |
struct mwEncryptItem *ei;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c = ci->cipher;
|
|
Packit |
16808d |
cr = (struct mwCipher_RC2_128 *) c;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
ei = g_new0(struct mwEncryptItem, 1);
|
|
Packit |
16808d |
ei->id = mwCipher_RC2_128;
|
|
Packit |
16808d |
mwOpaque_clone(&ei->info, &cr->public_key);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return ei;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static void accepted_RC2_128(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwEncryptItem *item) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
offered_RC2_128(ci, item);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static struct mwEncryptItem *
|
|
Packit |
16808d |
accept_RC2_128(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return offer_RC2_128(ci);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static int encrypt_RC2_128(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwOpaque *data) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_128 *cir;
|
|
Packit |
16808d |
struct mwOpaque o = { 0, 0 };
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cir = (struct mwCipherInstance_RC2_128 *) ci;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwEncryptExpanded(cir->shared, cir->outgoing_iv, data, &o);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwOpaque_clear(data);
|
|
Packit |
16808d |
data->data = o.data;
|
|
Packit |
16808d |
data->len = o.len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return 0;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static int decrypt_RC2_128(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwOpaque *data) {
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipherInstance_RC2_128 *cir;
|
|
Packit |
16808d |
struct mwOpaque o = { 0, 0 };
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cir = (struct mwCipherInstance_RC2_128 *) ci;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwDecryptExpanded(cir->shared, cir->incoming_iv, data, &o);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mwOpaque_clear(data);
|
|
Packit |
16808d |
data->data = o.data;
|
|
Packit |
16808d |
data->len = o.len;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return 0;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
static void clear_RC2_128(struct mwCipher *c) {
|
|
Packit |
16808d |
struct mwCipher_RC2_128 *cr;
|
|
Packit |
16808d |
cr = (struct mwCipher_RC2_128 *) c;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mw_mp_clear(&cr->private_key);
|
|
Packit |
16808d |
mwOpaque_clear(&cr->public_key);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipher *mwCipher_new_RC2_128(struct mwSession *s) {
|
|
Packit |
16808d |
struct mwCipher_RC2_128 *cr;
|
|
Packit |
16808d |
struct mwCipher *c;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mw_mp_int pubkey;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cr = g_new0(struct mwCipher_RC2_128, 1);
|
|
Packit |
16808d |
c = &cr->cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c->session = s;
|
|
Packit |
16808d |
c->type = mwCipher_RC2_128;
|
|
Packit |
16808d |
c->get_name = get_name_RC2_128;
|
|
Packit |
16808d |
c->get_desc = get_desc_RC2_128;
|
|
Packit |
16808d |
c->new_instance = new_instance_RC2_128;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c->offered = offered_RC2_128;
|
|
Packit |
16808d |
c->offer = offer_RC2_128;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c->accepted = accepted_RC2_128;
|
|
Packit |
16808d |
c->accept = accept_RC2_128;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c->encrypt = encrypt_RC2_128;
|
|
Packit |
16808d |
c->decrypt = decrypt_RC2_128;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
c->clear = clear_RC2_128;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
mw_mp_init(&cr->private_key);
|
|
Packit |
16808d |
mw_mp_init(&pubkey);
|
|
Packit |
16808d |
mwDHRandKeypair(&cr->private_key, &pubkey);
|
|
Packit |
16808d |
mwDHExportKey(&pubkey, &cr->public_key);
|
|
Packit |
16808d |
mw_mp_clear(&pubkey);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return c;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwSession *mwCipher_getSession(struct mwCipher *cipher) {
|
|
Packit |
16808d |
g_return_val_if_fail(cipher != NULL, NULL);
|
|
Packit |
16808d |
return cipher->session;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
guint16 mwCipher_getType(struct mwCipher *cipher) {
|
|
Packit |
16808d |
/* oh man, this is a bad failover... who the hell decided to make
|
|
Packit |
16808d |
zero a real cipher id? */
|
|
Packit |
16808d |
g_return_val_if_fail(cipher != NULL, 0xffff);
|
|
Packit |
16808d |
return cipher->type;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
const char *mwCipher_getName(struct mwCipher *cipher) {
|
|
Packit |
16808d |
g_return_val_if_fail(cipher != NULL, NULL);
|
|
Packit |
16808d |
g_return_val_if_fail(cipher->get_name != NULL, NULL);
|
|
Packit |
16808d |
return cipher->get_name();
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
const char *mwCipher_getDesc(struct mwCipher *cipher) {
|
|
Packit |
16808d |
g_return_val_if_fail(cipher != NULL, NULL);
|
|
Packit |
16808d |
g_return_val_if_fail(cipher->get_desc != NULL, NULL);
|
|
Packit |
16808d |
return cipher->get_desc();
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
void mwCipher_free(struct mwCipher *cipher) {
|
|
Packit |
16808d |
if(! cipher) return;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(cipher->clear)
|
|
Packit |
16808d |
cipher->clear(cipher);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_free(cipher);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipherInstance *mwCipher_newInstance(struct mwCipher *cipher,
|
|
Packit |
16808d |
struct mwChannel *chan) {
|
|
Packit |
16808d |
g_return_val_if_fail(cipher != NULL, NULL);
|
|
Packit |
16808d |
g_return_val_if_fail(chan != NULL, NULL);
|
|
Packit |
16808d |
g_return_val_if_fail(cipher->new_instance != NULL, NULL);
|
|
Packit |
16808d |
return cipher->new_instance(cipher, chan);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwCipher *mwCipherInstance_getCipher(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
g_return_val_if_fail(ci != NULL, NULL);
|
|
Packit |
16808d |
return ci->cipher;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwChannel *mwCipherInstance_getChannel(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
g_return_val_if_fail(ci != NULL, NULL);
|
|
Packit |
16808d |
return ci->channel;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
void mwCipherInstance_offered(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwEncryptItem *item) {
|
|
Packit |
16808d |
struct mwCipher *cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_return_if_fail(ci != NULL);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cipher = ci->cipher;
|
|
Packit |
16808d |
g_return_if_fail(cipher != NULL);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(cipher->offered) cipher->offered(ci, item);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwEncryptItem *
|
|
Packit |
16808d |
mwCipherInstance_offer(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
struct mwCipher *cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_return_val_if_fail(ci != NULL, NULL);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cipher = ci->cipher;
|
|
Packit |
16808d |
g_return_val_if_fail(cipher != NULL, NULL);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return cipher->offer(ci);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
void mwCipherInstance_accepted(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwEncryptItem *item) {
|
|
Packit |
16808d |
struct mwCipher *cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_return_if_fail(ci != NULL);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cipher = ci->cipher;
|
|
Packit |
16808d |
g_return_if_fail(cipher != NULL);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(cipher->accepted) cipher->accepted(ci, item);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
struct mwEncryptItem *
|
|
Packit |
16808d |
mwCipherInstance_accept(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
struct mwCipher *cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_return_val_if_fail(ci != NULL, NULL);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cipher = ci->cipher;
|
|
Packit |
16808d |
g_return_val_if_fail(cipher != NULL, NULL);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return cipher->accept(ci);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
int mwCipherInstance_encrypt(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwOpaque *data) {
|
|
Packit |
16808d |
struct mwCipher *cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_return_val_if_fail(data != NULL, 0);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(! ci) return 0;
|
|
Packit |
16808d |
cipher = ci->cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_return_val_if_fail(cipher != NULL, -1);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return (cipher->encrypt)?
|
|
Packit |
16808d |
cipher->encrypt(ci, data): 0;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
int mwCipherInstance_decrypt(struct mwCipherInstance *ci,
|
|
Packit |
16808d |
struct mwOpaque *data) {
|
|
Packit |
16808d |
struct mwCipher *cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_return_val_if_fail(data != NULL, 0);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(! ci) return 0;
|
|
Packit |
16808d |
cipher = ci->cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_return_val_if_fail(cipher != NULL, -1);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
return (cipher->decrypt)?
|
|
Packit |
16808d |
cipher->decrypt(ci, data): 0;
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|
|
Packit |
16808d |
|
|
Packit |
16808d |
void mwCipherInstance_free(struct mwCipherInstance *ci) {
|
|
Packit |
16808d |
struct mwCipher *cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(! ci) return;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
cipher = ci->cipher;
|
|
Packit |
16808d |
|
|
Packit |
16808d |
if(cipher && cipher->clear_instance)
|
|
Packit |
16808d |
cipher->clear_instance(ci);
|
|
Packit |
16808d |
|
|
Packit |
16808d |
g_free(ci);
|
|
Packit |
16808d |
}
|
|
Packit |
16808d |
|