1 /* 2 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright 1995 by Richard P. Basch. All Rights Reserved. 8 * Copyright 1995 by Lehman Brothers, Inc. All Rights Reserved. 9 * 10 * Export of this software from the United States of America may 11 * require a specific license from the United States Government. 12 * It is the responsibility of any person or organization contemplating 13 * export to obtain such a license before exporting. 14 * 15 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 16 * distribute this software and its documentation for any purpose and 17 * without fee is hereby granted, provided that the above copyright 18 * notice appear in all copies and that both that copyright notice and 19 * this permission notice appear in supporting documentation, and that 20 * the name of Richard P. Basch, Lehman Brothers and M.I.T. not be used 21 * in advertising or publicity pertaining to distribution of the software 22 * without specific, written prior permission. Richard P. Basch, 23 * Lehman Brothers and M.I.T. make no representations about the suitability 24 * of this software for any purpose. It is provided "as is" without 25 * express or implied warranty. 26 */ 27 28 #include "des_int.h" 29 30 /* 31 * Triple-DES CBC encryption mode. 32 */ 33 #ifndef _KERNEL 34 int 35 mit_des3_cbc_encrypt(krb5_context context, const mit_des_cblock *in, mit_des_cblock *out, 36 unsigned long length, krb5_keyblock *key, 37 const mit_des_cblock ivec, int encrypt) 38 { 39 int ret = KRB5_PROG_ETYPE_NOSUPP; 40 KRB5_MECH_TO_PKCS algos; 41 CK_MECHANISM mechanism; 42 CK_RV rv; 43 /* For the Key Object */ 44 ret = 0; 45 46 if ((rv = get_algo(key->enctype, &algos)) != CKR_OK) { 47 KRB5_LOG0(KRB5_ERR, "failure to get algo id in function " 48 "mit_des3_cbc_encrypt."); 49 ret = PKCS_ERR; 50 goto cleanup; 51 } 52 53 rv = init_key_uef(krb_ctx_hSession(context), key); 54 if (rv != CKR_OK) { 55 KRB5_LOG(KRB5_ERR, "init_key_uef failed in " 56 "mit_des3_cbc_encrypt: rv = 0x%0x", rv); 57 ret = PKCS_ERR; 58 goto cleanup; 59 } 60 61 mechanism.mechanism = algos.enc_algo; 62 mechanism.pParameter = (void*)ivec; 63 if (ivec != NULL) 64 mechanism.ulParameterLen = sizeof(mit_des_cblock); 65 else 66 mechanism.ulParameterLen = 0; 67 68 if (encrypt) 69 rv = C_EncryptInit(krb_ctx_hSession(context), &mechanism, key->hKey); 70 else 71 rv = C_DecryptInit(krb_ctx_hSession(context), &mechanism, key->hKey); 72 73 if (rv != CKR_OK) { 74 KRB5_LOG(KRB5_ERR, "C_EncryptInit/C_DecryptInit failed in " 75 "mit_des3_cbc_encrypt: rv = 0x%x", rv); 76 ret = PKCS_ERR; 77 goto cleanup; 78 } 79 80 if (encrypt) 81 rv = C_Encrypt(krb_ctx_hSession(context), (CK_BYTE_PTR)in, 82 (CK_ULONG)length, (CK_BYTE_PTR)out, 83 (CK_ULONG_PTR)&length); 84 else 85 rv = C_Decrypt(krb_ctx_hSession(context), (CK_BYTE_PTR)in, 86 (CK_ULONG)length, (CK_BYTE_PTR)out, 87 (CK_ULONG_PTR)&length); 88 89 if (rv != CKR_OK) { 90 KRB5_LOG(KRB5_ERR, 91 "C_Encrypt/C_Decrypt failed in mit_des3_cbc_encrypt: " 92 "rv = 0x%x", rv); 93 ret = PKCS_ERR; 94 } 95 cleanup: 96 97 final_cleanup: 98 if (ret) 99 (void) memset(out, 0, length); 100 101 KRB5_LOG(KRB5_INFO, "mit_des3_cbc_encrypt() end ret=%d\n", ret); 102 return(ret); 103 } 104 105 #else 106 #include <sys/crypto/api.h> 107 108 /* ARGSUSED */ 109 int 110 mit_des3_cbc_encrypt(krb5_context context, 111 const mit_des_cblock *in, 112 mit_des_cblock *out, 113 unsigned long length, krb5_keyblock *key, 114 const mit_des_cblock ivec, int encrypt) 115 { 116 int ret = KRB5_PROG_ETYPE_NOSUPP; 117 krb5_data ivdata; 118 119 KRB5_LOG(KRB5_INFO, "mit_des3_cbc_encrypt() start encrypt=%d", encrypt); 120 121 ivdata.data = (char *)ivec; 122 ivdata.length = sizeof(mit_des_cblock); 123 124 ret = k5_ef_crypto((const char *)in, (char *)out, 125 length, key, &ivdata, encrypt); 126 127 KRB5_LOG(KRB5_INFO, "mit_des3_cbc_encrypt() end retval=%d", ret); 128 return(ret); 129 } 130 #endif /* !_KERNEL */ 131