1*ae771770SStanislav Sedov /* 2*ae771770SStanislav Sedov * Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan 3*ae771770SStanislav Sedov * (Royal Institute of Technology, Stockholm, Sweden). 4*ae771770SStanislav Sedov * All rights reserved. 5*ae771770SStanislav Sedov * 6*ae771770SStanislav Sedov * Redistribution and use in source and binary forms, with or without 7*ae771770SStanislav Sedov * modification, are permitted provided that the following conditions 8*ae771770SStanislav Sedov * are met: 9*ae771770SStanislav Sedov * 10*ae771770SStanislav Sedov * 1. Redistributions of source code must retain the above copyright 11*ae771770SStanislav Sedov * notice, this list of conditions and the following disclaimer. 12*ae771770SStanislav Sedov * 13*ae771770SStanislav Sedov * 2. Redistributions in binary form must reproduce the above copyright 14*ae771770SStanislav Sedov * notice, this list of conditions and the following disclaimer in the 15*ae771770SStanislav Sedov * documentation and/or other materials provided with the distribution. 16*ae771770SStanislav Sedov * 17*ae771770SStanislav Sedov * 3. Neither the name of the Institute nor the names of its contributors 18*ae771770SStanislav Sedov * may be used to endorse or promote products derived from this software 19*ae771770SStanislav Sedov * without specific prior written permission. 20*ae771770SStanislav Sedov * 21*ae771770SStanislav Sedov * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22*ae771770SStanislav Sedov * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23*ae771770SStanislav Sedov * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24*ae771770SStanislav Sedov * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25*ae771770SStanislav Sedov * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26*ae771770SStanislav Sedov * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27*ae771770SStanislav Sedov * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28*ae771770SStanislav Sedov * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29*ae771770SStanislav Sedov * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30*ae771770SStanislav Sedov * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31*ae771770SStanislav Sedov * SUCH DAMAGE. 32*ae771770SStanislav Sedov */ 33*ae771770SStanislav Sedov 34*ae771770SStanislav Sedov #include "krb5_locl.h" 35*ae771770SStanislav Sedov 36*ae771770SStanislav Sedov static krb5_error_code 37*ae771770SStanislav Sedov ARCFOUR_string_to_key(krb5_context context, 38*ae771770SStanislav Sedov krb5_enctype enctype, 39*ae771770SStanislav Sedov krb5_data password, 40*ae771770SStanislav Sedov krb5_salt salt, 41*ae771770SStanislav Sedov krb5_data opaque, 42*ae771770SStanislav Sedov krb5_keyblock *key) 43*ae771770SStanislav Sedov { 44*ae771770SStanislav Sedov krb5_error_code ret; 45*ae771770SStanislav Sedov uint16_t *s = NULL; 46*ae771770SStanislav Sedov size_t len = 0, i; 47*ae771770SStanislav Sedov EVP_MD_CTX *m; 48*ae771770SStanislav Sedov 49*ae771770SStanislav Sedov m = EVP_MD_CTX_create(); 50*ae771770SStanislav Sedov if (m == NULL) { 51*ae771770SStanislav Sedov ret = ENOMEM; 52*ae771770SStanislav Sedov krb5_set_error_message(context, ret, N_("malloc: out of memory", "")); 53*ae771770SStanislav Sedov goto out; 54*ae771770SStanislav Sedov } 55*ae771770SStanislav Sedov 56*ae771770SStanislav Sedov EVP_DigestInit_ex(m, EVP_md4(), NULL); 57*ae771770SStanislav Sedov 58*ae771770SStanislav Sedov ret = wind_utf8ucs2_length(password.data, &len); 59*ae771770SStanislav Sedov if (ret) { 60*ae771770SStanislav Sedov krb5_set_error_message (context, ret, 61*ae771770SStanislav Sedov N_("Password not an UCS2 string", "")); 62*ae771770SStanislav Sedov goto out; 63*ae771770SStanislav Sedov } 64*ae771770SStanislav Sedov 65*ae771770SStanislav Sedov s = malloc (len * sizeof(s[0])); 66*ae771770SStanislav Sedov if (len != 0 && s == NULL) { 67*ae771770SStanislav Sedov krb5_set_error_message (context, ENOMEM, 68*ae771770SStanislav Sedov N_("malloc: out of memory", "")); 69*ae771770SStanislav Sedov ret = ENOMEM; 70*ae771770SStanislav Sedov goto out; 71*ae771770SStanislav Sedov } 72*ae771770SStanislav Sedov 73*ae771770SStanislav Sedov ret = wind_utf8ucs2(password.data, s, &len); 74*ae771770SStanislav Sedov if (ret) { 75*ae771770SStanislav Sedov krb5_set_error_message (context, ret, 76*ae771770SStanislav Sedov N_("Password not an UCS2 string", "")); 77*ae771770SStanislav Sedov goto out; 78*ae771770SStanislav Sedov } 79*ae771770SStanislav Sedov 80*ae771770SStanislav Sedov /* LE encoding */ 81*ae771770SStanislav Sedov for (i = 0; i < len; i++) { 82*ae771770SStanislav Sedov unsigned char p; 83*ae771770SStanislav Sedov p = (s[i] & 0xff); 84*ae771770SStanislav Sedov EVP_DigestUpdate (m, &p, 1); 85*ae771770SStanislav Sedov p = (s[i] >> 8) & 0xff; 86*ae771770SStanislav Sedov EVP_DigestUpdate (m, &p, 1); 87*ae771770SStanislav Sedov } 88*ae771770SStanislav Sedov 89*ae771770SStanislav Sedov key->keytype = enctype; 90*ae771770SStanislav Sedov ret = krb5_data_alloc (&key->keyvalue, 16); 91*ae771770SStanislav Sedov if (ret) { 92*ae771770SStanislav Sedov krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", "")); 93*ae771770SStanislav Sedov goto out; 94*ae771770SStanislav Sedov } 95*ae771770SStanislav Sedov EVP_DigestFinal_ex (m, key->keyvalue.data, NULL); 96*ae771770SStanislav Sedov 97*ae771770SStanislav Sedov out: 98*ae771770SStanislav Sedov EVP_MD_CTX_destroy(m); 99*ae771770SStanislav Sedov if (s) 100*ae771770SStanislav Sedov memset (s, 0, len); 101*ae771770SStanislav Sedov free (s); 102*ae771770SStanislav Sedov return ret; 103*ae771770SStanislav Sedov } 104*ae771770SStanislav Sedov 105*ae771770SStanislav Sedov struct salt_type _krb5_arcfour_salt[] = { 106*ae771770SStanislav Sedov { 107*ae771770SStanislav Sedov KRB5_PW_SALT, 108*ae771770SStanislav Sedov "pw-salt", 109*ae771770SStanislav Sedov ARCFOUR_string_to_key 110*ae771770SStanislav Sedov }, 111*ae771770SStanislav Sedov { 0 } 112*ae771770SStanislav Sedov }; 113