1 /* crypto/aes/aes_wrap.c */
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
6 /* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
56 #include <openssl/aes.h>
57 #include <openssl/bio.h>
59 static const unsigned char default_iv[] = {
60 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6,
63 int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
65 const unsigned char *in, unsigned int inlen)
67 unsigned char *A, B[16], *R;
69 if ((inlen & 0x7) || (inlen < 8))
73 memcpy(out + 8, in, inlen);
79 for (j = 0; j < 6; j++) {
81 for (i = 0; i < inlen; i += 8, t++, R += 8) {
83 AES_encrypt(B, B, key);
84 A[7] ^= (unsigned char)(t & 0xff);
86 A[6] ^= (unsigned char)((t >> 8) & 0xff);
87 A[5] ^= (unsigned char)((t >> 16) & 0xff);
88 A[4] ^= (unsigned char)((t >> 24) & 0xff);
97 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
99 const unsigned char *in, unsigned int inlen)
101 unsigned char *A, B[16], *R;
102 unsigned int i, j, t;
109 t = 6 * (inlen >> 3);
111 memcpy(out, in + 8, inlen);
112 for (j = 0; j < 6; j++) {
114 for (i = 0; i < inlen; i += 8, t--, R -= 8) {
115 A[7] ^= (unsigned char)(t & 0xff);
117 A[6] ^= (unsigned char)((t >> 8) & 0xff);
118 A[5] ^= (unsigned char)((t >> 16) & 0xff);
119 A[4] ^= (unsigned char)((t >> 24) & 0xff);
122 AES_decrypt(B, B, key);
128 if (memcmp(A, iv, 8)) {
129 OPENSSL_cleanse(out, inlen);
137 int AES_wrap_unwrap_test(const unsigned char *kek, int keybits,
138 const unsigned char *iv,
139 const unsigned char *eout,
140 const unsigned char *key, int keylen)
142 unsigned char *otmp = NULL, *ptmp = NULL;
145 otmp = OPENSSL_malloc(keylen + 8);
146 ptmp = OPENSSL_malloc(keylen);
149 if (AES_set_encrypt_key(kek, keybits, &wctx))
151 r = AES_wrap_key(&wctx, iv, otmp, key, keylen);
155 if (eout && memcmp(eout, otmp, keylen))
158 if (AES_set_decrypt_key(kek, keybits, &wctx))
160 r = AES_unwrap_key(&wctx, iv, ptmp, otmp, r);
162 if (memcmp(key, ptmp, keylen))
177 int main(int argc, char **argv)
180 static const unsigned char kek[] = {
181 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
182 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
183 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
184 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
187 static const unsigned char key[] = {
188 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
189 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff,
190 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
191 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
194 static const unsigned char e1[] = {
195 0x1f, 0xa6, 0x8b, 0x0a, 0x81, 0x12, 0xb4, 0x47,
196 0xae, 0xf3, 0x4b, 0xd8, 0xfb, 0x5a, 0x7b, 0x82,
197 0x9d, 0x3e, 0x86, 0x23, 0x71, 0xd2, 0xcf, 0xe5
200 static const unsigned char e2[] = {
201 0x96, 0x77, 0x8b, 0x25, 0xae, 0x6c, 0xa4, 0x35,
202 0xf9, 0x2b, 0x5b, 0x97, 0xc0, 0x50, 0xae, 0xd2,
203 0x46, 0x8a, 0xb8, 0xa1, 0x7a, 0xd8, 0x4e, 0x5d
206 static const unsigned char e3[] = {
207 0x64, 0xe8, 0xc3, 0xf9, 0xce, 0x0f, 0x5b, 0xa2,
208 0x63, 0xe9, 0x77, 0x79, 0x05, 0x81, 0x8a, 0x2a,
209 0x93, 0xc8, 0x19, 0x1e, 0x7d, 0x6e, 0x8a, 0xe7
212 static const unsigned char e4[] = {
213 0x03, 0x1d, 0x33, 0x26, 0x4e, 0x15, 0xd3, 0x32,
214 0x68, 0xf2, 0x4e, 0xc2, 0x60, 0x74, 0x3e, 0xdc,
215 0xe1, 0xc6, 0xc7, 0xdd, 0xee, 0x72, 0x5a, 0x93,
216 0x6b, 0xa8, 0x14, 0x91, 0x5c, 0x67, 0x62, 0xd2
219 static const unsigned char e5[] = {
220 0xa8, 0xf9, 0xbc, 0x16, 0x12, 0xc6, 0x8b, 0x3f,
221 0xf6, 0xe6, 0xf4, 0xfb, 0xe3, 0x0e, 0x71, 0xe4,
222 0x76, 0x9c, 0x8b, 0x80, 0xa3, 0x2c, 0xb8, 0x95,
223 0x8c, 0xd5, 0xd1, 0x7d, 0x6b, 0x25, 0x4d, 0xa1
226 static const unsigned char e6[] = {
227 0x28, 0xc9, 0xf4, 0x04, 0xc4, 0xb8, 0x10, 0xf4,
228 0xcb, 0xcc, 0xb3, 0x5c, 0xfb, 0x87, 0xf8, 0x26,
229 0x3f, 0x57, 0x86, 0xe2, 0xd8, 0x0e, 0xd3, 0x26,
230 0xcb, 0xc7, 0xf0, 0xe7, 0x1a, 0x99, 0xf4, 0x3b,
231 0xfb, 0x98, 0x8b, 0x9b, 0x7a, 0x02, 0xdd, 0x21
236 ret = AES_wrap_unwrap_test(kek, 128, NULL, e1, key, 16);
237 fprintf(stderr, "Key test result %d\n", ret);
238 ret = AES_wrap_unwrap_test(kek, 192, NULL, e2, key, 16);
239 fprintf(stderr, "Key test result %d\n", ret);
240 ret = AES_wrap_unwrap_test(kek, 256, NULL, e3, key, 16);
241 fprintf(stderr, "Key test result %d\n", ret);
242 ret = AES_wrap_unwrap_test(kek, 192, NULL, e4, key, 24);
243 fprintf(stderr, "Key test result %d\n", ret);
244 ret = AES_wrap_unwrap_test(kek, 256, NULL, e5, key, 24);
245 fprintf(stderr, "Key test result %d\n", ret);
246 ret = AES_wrap_unwrap_test(kek, 256, NULL, e6, key, 32);
247 fprintf(stderr, "Key test result %d\n", ret);