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
mit_des3_cbc_encrypt(krb5_context context,const mit_des_cblock * in,mit_des_cblock * out,unsigned long length,krb5_keyblock * key,const mit_des_cblock ivec,int encrypt)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
mit_des3_cbc_encrypt(krb5_context context,const mit_des_cblock * in,mit_des_cblock * out,unsigned long length,krb5_keyblock * key,const mit_des_cblock ivec,int encrypt)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