1 /* ====================================================================
2 * Copyright (c) 2002-2006 The OpenSSL Project. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
20 *
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * openssl-core@openssl.org.
25 *
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
29 *
30 * 6. Redistributions of any form whatsoever must retain the following
31 * acknowledgment:
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
34 *
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ==================================================================== */
48
49 #include <openssl/aes.h>
50
51 #include <assert.h>
52
53 #include "internal.h"
54 #include "../modes/internal.h"
55
56
57 // Be aware that different sets of AES functions use incompatible key
58 // representations, varying in format of the key schedule, the |AES_KEY.rounds|
59 // value, or both. Therefore they cannot mix. Also, on AArch64, the plain-C
60 // code, above, is incompatible with the |aes_hw_*| functions.
61
AES_encrypt(const uint8_t * in,uint8_t * out,const AES_KEY * key)62 void AES_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
63 if (hwaes_capable()) {
64 aes_hw_encrypt(in, out, key);
65 } else if (vpaes_capable()) {
66 vpaes_encrypt(in, out, key);
67 } else {
68 aes_nohw_encrypt(in, out, key);
69 }
70 }
71
AES_decrypt(const uint8_t * in,uint8_t * out,const AES_KEY * key)72 void AES_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
73 if (hwaes_capable()) {
74 aes_hw_decrypt(in, out, key);
75 } else if (vpaes_capable()) {
76 vpaes_decrypt(in, out, key);
77 } else {
78 aes_nohw_decrypt(in, out, key);
79 }
80 }
81
AES_set_encrypt_key(const uint8_t * key,unsigned bits,AES_KEY * aeskey)82 int AES_set_encrypt_key(const uint8_t *key, unsigned bits, AES_KEY *aeskey) {
83 if (bits != 128 && bits != 192 && bits != 256) {
84 return -2;
85 }
86 if (hwaes_capable()) {
87 return aes_hw_set_encrypt_key(key, bits, aeskey);
88 } else if (vpaes_capable()) {
89 return vpaes_set_encrypt_key(key, bits, aeskey);
90 } else {
91 return aes_nohw_set_encrypt_key(key, bits, aeskey);
92 }
93 }
94
AES_set_decrypt_key(const uint8_t * key,unsigned bits,AES_KEY * aeskey)95 int AES_set_decrypt_key(const uint8_t *key, unsigned bits, AES_KEY *aeskey) {
96 if (bits != 128 && bits != 192 && bits != 256) {
97 return -2;
98 }
99 if (hwaes_capable()) {
100 return aes_hw_set_decrypt_key(key, bits, aeskey);
101 } else if (vpaes_capable()) {
102 return vpaes_set_decrypt_key(key, bits, aeskey);
103 } else {
104 return aes_nohw_set_decrypt_key(key, bits, aeskey);
105 }
106 }
107