17c478bd9Sstevel@tonic-gate /* 2*d7bec57cSShawn Emery * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 37c478bd9Sstevel@tonic-gate * Use is subject to license terms. 47c478bd9Sstevel@tonic-gate */ 57c478bd9Sstevel@tonic-gate 67c478bd9Sstevel@tonic-gate /* 77c478bd9Sstevel@tonic-gate * lib/crypto/keyhash_provider/hmac_md5.c 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate (I don't know) 107c478bd9Sstevel@tonic-gate . 117c478bd9Sstevel@tonic-gate * Copyright2001 by the Massachusetts Institute of Technology. 127c478bd9Sstevel@tonic-gate * All Rights Reserved. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * Export of this software from the United States of America may 157c478bd9Sstevel@tonic-gate * require a specific license from the United States Government. 167c478bd9Sstevel@tonic-gate * It is the responsibility of any person or organization contemplating 177c478bd9Sstevel@tonic-gate * export to obtain such a license before exporting. 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 207c478bd9Sstevel@tonic-gate * distribute this software and its documentation for any purpose and 217c478bd9Sstevel@tonic-gate * without fee is hereby granted, provided that the above copyright 227c478bd9Sstevel@tonic-gate * notice appear in all copies and that both that copyright notice and 237c478bd9Sstevel@tonic-gate * this permission notice appear in supporting documentation, and that 247c478bd9Sstevel@tonic-gate * the name of M.I.T. not be used in advertising or publicity pertaining 257c478bd9Sstevel@tonic-gate * to distribution of the software without specific, written prior 267c478bd9Sstevel@tonic-gate * permission. Furthermore if you modify this software you must label 277c478bd9Sstevel@tonic-gate * your software as modified software and not distribute it in such a 287c478bd9Sstevel@tonic-gate * fashion that it might be confused with the original M.I.T. software. 297c478bd9Sstevel@tonic-gate * M.I.T. makes no representations about the suitability of 307c478bd9Sstevel@tonic-gate * this software for any purpose. It is provided "as is" without express 317c478bd9Sstevel@tonic-gate * or implied warranty. 327c478bd9Sstevel@tonic-gate * 337c478bd9Sstevel@tonic-gate * 347c478bd9Sstevel@tonic-gate * Implementation of the Microsoft hmac-md5 checksum type. 357c478bd9Sstevel@tonic-gate * Implemented based on draft-brezak-win2k-krb-rc4-hmac-03 367c478bd9Sstevel@tonic-gate */ 377c478bd9Sstevel@tonic-gate 38159d09a2SMark Phalan #include "k5-int.h" 39159d09a2SMark Phalan #include "keyhash_provider.h" 40159d09a2SMark Phalan #include "arcfour.h" 41159d09a2SMark Phalan #include "hash_provider.h" 427c478bd9Sstevel@tonic-gate 437c478bd9Sstevel@tonic-gate static krb5_error_code 447c478bd9Sstevel@tonic-gate k5_hmac_md5_hash (krb5_context context, 457c478bd9Sstevel@tonic-gate const krb5_keyblock *key, krb5_keyusage usage, 467c478bd9Sstevel@tonic-gate const krb5_data *iv, 477c478bd9Sstevel@tonic-gate const krb5_data *input, krb5_data *output) 487c478bd9Sstevel@tonic-gate { 497c478bd9Sstevel@tonic-gate krb5_keyusage ms_usage; 507c478bd9Sstevel@tonic-gate krb5_error_code ret; 517c478bd9Sstevel@tonic-gate krb5_keyblock ks; 527c478bd9Sstevel@tonic-gate krb5_data ds, ks_constant, md5tmp; 537c478bd9Sstevel@tonic-gate krb5_data hash_input[2]; 547c478bd9Sstevel@tonic-gate char digest[MD5_CKSUM_LENGTH]; 557c478bd9Sstevel@tonic-gate char t[4]; 567c478bd9Sstevel@tonic-gate CK_MECHANISM mechanism; 577c478bd9Sstevel@tonic-gate CK_RV rv; 587c478bd9Sstevel@tonic-gate CK_ULONG hashlen; 597c478bd9Sstevel@tonic-gate 607c478bd9Sstevel@tonic-gate bzero(&ks, sizeof(krb5_keyblock)); 61*d7bec57cSShawn Emery 62*d7bec57cSShawn Emery /* 63*d7bec57cSShawn Emery * Solaris Kerberos: The digest length is that of MD5_CKSUM_LENGTH not the key 64*d7bec57cSShawn Emery * length, as keys can be of varying lengths but should not affect the digest 65*d7bec57cSShawn Emery * length. The signing key is the digest and therefore is also the same 66*d7bec57cSShawn Emery * length, MD5_CKSUM_LENGTH. 67*d7bec57cSShawn Emery */ 68*d7bec57cSShawn Emery ds.length = MD5_CKSUM_LENGTH; 69*d7bec57cSShawn Emery ks.length = MD5_CKSUM_LENGTH; 707c478bd9Sstevel@tonic-gate ds.data = malloc(ds.length); 717c478bd9Sstevel@tonic-gate if (ds.data == NULL) 72159d09a2SMark Phalan return ENOMEM; 737c478bd9Sstevel@tonic-gate ks.contents = (void *) ds.data; 747c478bd9Sstevel@tonic-gate 757c478bd9Sstevel@tonic-gate ks_constant.data = "signaturekey"; 767c478bd9Sstevel@tonic-gate ks_constant.length = strlen(ks_constant.data)+1; /* Including null*/ 777c478bd9Sstevel@tonic-gate 78159d09a2SMark Phalan /* Solaris Kerberos */ 797c478bd9Sstevel@tonic-gate ret = krb5_hmac(context, &krb5int_hash_md5, key, 1, 80159d09a2SMark Phalan &ks_constant, &ds); 817c478bd9Sstevel@tonic-gate if (ret) 827c478bd9Sstevel@tonic-gate goto cleanup; 837c478bd9Sstevel@tonic-gate 847c478bd9Sstevel@tonic-gate ms_usage = krb5int_arcfour_translate_usage (usage); 857c478bd9Sstevel@tonic-gate t[0] = (ms_usage) & 0xff; 867c478bd9Sstevel@tonic-gate t[1] = (ms_usage>>8) & 0xff; 877c478bd9Sstevel@tonic-gate t[2] = (ms_usage >>16) & 0xff; 887c478bd9Sstevel@tonic-gate t[3] = (ms_usage>>24) & 0XFF; 897c478bd9Sstevel@tonic-gate 90159d09a2SMark Phalan /* Solaris Kerberos */ 917c478bd9Sstevel@tonic-gate mechanism.mechanism = CKM_MD5; 927c478bd9Sstevel@tonic-gate mechanism.pParameter = NULL_PTR; 937c478bd9Sstevel@tonic-gate mechanism.ulParameterLen = 0; 947c478bd9Sstevel@tonic-gate 957c478bd9Sstevel@tonic-gate if ((rv = C_DigestInit(krb_ctx_hSession(context), &mechanism)) != CKR_OK) { 967c478bd9Sstevel@tonic-gate KRB5_LOG(KRB5_ERR, "C_DigestInit failed in k5_md5_hmac_hash: " 977c478bd9Sstevel@tonic-gate "rv = 0x%x.", rv); 987c478bd9Sstevel@tonic-gate ret = PKCS_ERR; 997c478bd9Sstevel@tonic-gate goto cleanup; 1007c478bd9Sstevel@tonic-gate } 1017c478bd9Sstevel@tonic-gate if ((rv = C_DigestUpdate(krb_ctx_hSession(context), 1027c478bd9Sstevel@tonic-gate (CK_BYTE_PTR)t, (CK_ULONG)sizeof(t))) != CKR_OK) { 1037c478bd9Sstevel@tonic-gate KRB5_LOG(KRB5_ERR, "C_DigestUpdate failed in k5_md5_hmac_hash: " 1047c478bd9Sstevel@tonic-gate "rv = 0x%x", rv); 1057c478bd9Sstevel@tonic-gate ret = PKCS_ERR; 1067c478bd9Sstevel@tonic-gate goto cleanup; 1077c478bd9Sstevel@tonic-gate } 1087c478bd9Sstevel@tonic-gate if ((rv = C_DigestUpdate(krb_ctx_hSession(context), 1097c478bd9Sstevel@tonic-gate (CK_BYTE_PTR)input->data, (CK_ULONG)input->length)) != CKR_OK) { 1107c478bd9Sstevel@tonic-gate KRB5_LOG(KRB5_ERR, "C_DigestUpdate failed in k5_md5_hmac_hash: " 1117c478bd9Sstevel@tonic-gate "rv = 0x%x", rv); 1127c478bd9Sstevel@tonic-gate ret = PKCS_ERR; 1137c478bd9Sstevel@tonic-gate goto cleanup; 1147c478bd9Sstevel@tonic-gate } 1157c478bd9Sstevel@tonic-gate hashlen = MD5_CKSUM_LENGTH; 1167c478bd9Sstevel@tonic-gate if ((rv = C_DigestFinal(krb_ctx_hSession(context), 1177c478bd9Sstevel@tonic-gate (CK_BYTE_PTR)digest, (CK_ULONG_PTR)&hashlen)) != CKR_OK) { 1187c478bd9Sstevel@tonic-gate KRB5_LOG(KRB5_ERR, "C_DigestFinal failed in k5_md5_hmac_hash: " 1197c478bd9Sstevel@tonic-gate "rv = 0x%x", rv); 1207c478bd9Sstevel@tonic-gate ret = PKCS_ERR; 1217c478bd9Sstevel@tonic-gate goto cleanup; 1227c478bd9Sstevel@tonic-gate } 1237c478bd9Sstevel@tonic-gate 1247c478bd9Sstevel@tonic-gate md5tmp.data = digest; 1257c478bd9Sstevel@tonic-gate md5tmp.length = hashlen; 1267c478bd9Sstevel@tonic-gate 1277c478bd9Sstevel@tonic-gate ret = krb5_hmac (context, &krb5int_hash_md5, &ks, 1, &md5tmp, output); 1287c478bd9Sstevel@tonic-gate 1297c478bd9Sstevel@tonic-gate cleanup: 1307c478bd9Sstevel@tonic-gate bzero(ks.contents, ks.length); 1317c478bd9Sstevel@tonic-gate bzero(md5tmp.data, md5tmp.length); 1327c478bd9Sstevel@tonic-gate FREE (ks.contents, ks.length); 1337c478bd9Sstevel@tonic-gate return (ret); 1347c478bd9Sstevel@tonic-gate } 1357c478bd9Sstevel@tonic-gate 136159d09a2SMark Phalan 137159d09a2SMark Phalan 138159d09a2SMark Phalan const struct krb5_keyhash_provider krb5int_keyhash_hmac_md5 = { 139159d09a2SMark Phalan 16, 140159d09a2SMark Phalan k5_hmac_md5_hash, 141159d09a2SMark Phalan NULL /*checksum again*/ 1427c478bd9Sstevel@tonic-gate }; 1437c478bd9Sstevel@tonic-gate 144