aboutsummaryrefslogtreecommitdiffstats
path: root/crypto/aes/aes_wrap.c
diff options
context:
space:
mode:
Diffstat (limited to 'crypto/aes/aes_wrap.c')
-rw-r--r--crypto/aes/aes_wrap.c365
1 files changed, 178 insertions, 187 deletions
diff --git a/crypto/aes/aes_wrap.c b/crypto/aes/aes_wrap.c
index e2d73d37ceda..b1ab8e25ef37 100644
--- a/crypto/aes/aes_wrap.c
+++ b/crypto/aes/aes_wrap.c
@@ -1,5 +1,6 @@
/* crypto/aes/aes_wrap.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project.
*/
/* ====================================================================
@@ -10,7 +11,7 @@
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
@@ -56,204 +57,194 @@
#include <openssl/bio.h>
static const unsigned char default_iv[] = {
- 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6,
+ 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6,
};
int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
- unsigned char *out,
- const unsigned char *in, unsigned int inlen)
- {
- unsigned char *A, B[16], *R;
- unsigned int i, j, t;
- if ((inlen & 0x7) || (inlen < 8))
- return -1;
- A = B;
- t = 1;
- memcpy(out + 8, in, inlen);
- if (!iv)
- iv = default_iv;
-
- memcpy(A, iv, 8);
-
- for (j = 0; j < 6; j++)
- {
- R = out + 8;
- for (i = 0; i < inlen; i += 8, t++, R += 8)
- {
- memcpy(B + 8, R, 8);
- AES_encrypt(B, B, key);
- A[7] ^= (unsigned char)(t & 0xff);
- if (t > 0xff)
- {
- A[6] ^= (unsigned char)((t >> 8) & 0xff);
- A[5] ^= (unsigned char)((t >> 16) & 0xff);
- A[4] ^= (unsigned char)((t >> 24) & 0xff);
- }
- memcpy(R, B + 8, 8);
- }
- }
- memcpy(out, A, 8);
- return inlen + 8;
- }
+ unsigned char *out,
+ const unsigned char *in, unsigned int inlen)
+{
+ unsigned char *A, B[16], *R;
+ unsigned int i, j, t;
+ if ((inlen & 0x7) || (inlen < 8))
+ return -1;
+ A = B;
+ t = 1;
+ memcpy(out + 8, in, inlen);
+ if (!iv)
+ iv = default_iv;
+
+ memcpy(A, iv, 8);
+
+ for (j = 0; j < 6; j++) {
+ R = out + 8;
+ for (i = 0; i < inlen; i += 8, t++, R += 8) {
+ memcpy(B + 8, R, 8);
+ AES_encrypt(B, B, key);
+ A[7] ^= (unsigned char)(t & 0xff);
+ if (t > 0xff) {
+ A[6] ^= (unsigned char)((t >> 8) & 0xff);
+ A[5] ^= (unsigned char)((t >> 16) & 0xff);
+ A[4] ^= (unsigned char)((t >> 24) & 0xff);
+ }
+ memcpy(R, B + 8, 8);
+ }
+ }
+ memcpy(out, A, 8);
+ return inlen + 8;
+}
int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
- unsigned char *out,
- const unsigned char *in, unsigned int inlen)
- {
- unsigned char *A, B[16], *R;
- unsigned int i, j, t;
- inlen -= 8;
- if (inlen & 0x7)
- return -1;
- if (inlen < 8)
- return -1;
- A = B;
- t = 6 * (inlen >> 3);
- memcpy(A, in, 8);
- memcpy(out, in + 8, inlen);
- for (j = 0; j < 6; j++)
- {
- R = out + inlen - 8;
- for (i = 0; i < inlen; i += 8, t--, R -= 8)
- {
- A[7] ^= (unsigned char)(t & 0xff);
- if (t > 0xff)
- {
- A[6] ^= (unsigned char)((t >> 8) & 0xff);
- A[5] ^= (unsigned char)((t >> 16) & 0xff);
- A[4] ^= (unsigned char)((t >> 24) & 0xff);
- }
- memcpy(B + 8, R, 8);
- AES_decrypt(B, B, key);
- memcpy(R, B + 8, 8);
- }
- }
- if (!iv)
- iv = default_iv;
- if (memcmp(A, iv, 8))
- {
- OPENSSL_cleanse(out, inlen);
- return 0;
- }
- return inlen;
- }
+ unsigned char *out,
+ const unsigned char *in, unsigned int inlen)
+{
+ unsigned char *A, B[16], *R;
+ unsigned int i, j, t;
+ inlen -= 8;
+ if (inlen & 0x7)
+ return -1;
+ if (inlen < 8)
+ return -1;
+ A = B;
+ t = 6 * (inlen >> 3);
+ memcpy(A, in, 8);
+ memcpy(out, in + 8, inlen);
+ for (j = 0; j < 6; j++) {
+ R = out + inlen - 8;
+ for (i = 0; i < inlen; i += 8, t--, R -= 8) {
+ A[7] ^= (unsigned char)(t & 0xff);
+ if (t > 0xff) {
+ A[6] ^= (unsigned char)((t >> 8) & 0xff);
+ A[5] ^= (unsigned char)((t >> 16) & 0xff);
+ A[4] ^= (unsigned char)((t >> 24) & 0xff);
+ }
+ memcpy(B + 8, R, 8);
+ AES_decrypt(B, B, key);
+ memcpy(R, B + 8, 8);
+ }
+ }
+ if (!iv)
+ iv = default_iv;
+ if (memcmp(A, iv, 8)) {
+ OPENSSL_cleanse(out, inlen);
+ return 0;
+ }
+ return inlen;
+}
#ifdef AES_WRAP_TEST
int AES_wrap_unwrap_test(const unsigned char *kek, int keybits,
- const unsigned char *iv,
- const unsigned char *eout,
- const unsigned char *key, int keylen)
- {
- unsigned char *otmp = NULL, *ptmp = NULL;
- int r, ret = 0;
- AES_KEY wctx;
- otmp = OPENSSL_malloc(keylen + 8);
- ptmp = OPENSSL_malloc(keylen);
- if (!otmp || !ptmp)
- return 0;
- if (AES_set_encrypt_key(kek, keybits, &wctx))
- goto err;
- r = AES_wrap_key(&wctx, iv, otmp, key, keylen);
- if (r <= 0)
- goto err;
-
- if (eout && memcmp(eout, otmp, keylen))
- goto err;
-
- if (AES_set_decrypt_key(kek, keybits, &wctx))
- goto err;
- r = AES_unwrap_key(&wctx, iv, ptmp, otmp, r);
-
- if (memcmp(key, ptmp, keylen))
- goto err;
-
- ret = 1;
-
- err:
- if (otmp)
- OPENSSL_free(otmp);
- if (ptmp)
- OPENSSL_free(ptmp);
-
- return ret;
-
- }
-
+ const unsigned char *iv,
+ const unsigned char *eout,
+ const unsigned char *key, int keylen)
+{
+ unsigned char *otmp = NULL, *ptmp = NULL;
+ int r, ret = 0;
+ AES_KEY wctx;
+ otmp = OPENSSL_malloc(keylen + 8);
+ ptmp = OPENSSL_malloc(keylen);
+ if (!otmp || !ptmp)
+ return 0;
+ if (AES_set_encrypt_key(kek, keybits, &wctx))
+ goto err;
+ r = AES_wrap_key(&wctx, iv, otmp, key, keylen);
+ if (r <= 0)
+ goto err;
+
+ if (eout && memcmp(eout, otmp, keylen))
+ goto err;
+
+ if (AES_set_decrypt_key(kek, keybits, &wctx))
+ goto err;
+ r = AES_unwrap_key(&wctx, iv, ptmp, otmp, r);
+
+ if (memcmp(key, ptmp, keylen))
+ goto err;
+
+ ret = 1;
+
+ err:
+ if (otmp)
+ OPENSSL_free(otmp);
+ if (ptmp)
+ OPENSSL_free(ptmp);
+
+ return ret;
+}
int main(int argc, char **argv)
{
-static const unsigned char kek[] = {
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
- 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
- 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
- 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
-};
-
-static const unsigned char key[] = {
- 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
- 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff,
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
- 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
-};
-
-static const unsigned char e1[] = {
- 0x1f, 0xa6, 0x8b, 0x0a, 0x81, 0x12, 0xb4, 0x47,
- 0xae, 0xf3, 0x4b, 0xd8, 0xfb, 0x5a, 0x7b, 0x82,
- 0x9d, 0x3e, 0x86, 0x23, 0x71, 0xd2, 0xcf, 0xe5
-};
-
-static const unsigned char e2[] = {
- 0x96, 0x77, 0x8b, 0x25, 0xae, 0x6c, 0xa4, 0x35,
- 0xf9, 0x2b, 0x5b, 0x97, 0xc0, 0x50, 0xae, 0xd2,
- 0x46, 0x8a, 0xb8, 0xa1, 0x7a, 0xd8, 0x4e, 0x5d
-};
-
-static const unsigned char e3[] = {
- 0x64, 0xe8, 0xc3, 0xf9, 0xce, 0x0f, 0x5b, 0xa2,
- 0x63, 0xe9, 0x77, 0x79, 0x05, 0x81, 0x8a, 0x2a,
- 0x93, 0xc8, 0x19, 0x1e, 0x7d, 0x6e, 0x8a, 0xe7
-};
-
-static const unsigned char e4[] = {
- 0x03, 0x1d, 0x33, 0x26, 0x4e, 0x15, 0xd3, 0x32,
- 0x68, 0xf2, 0x4e, 0xc2, 0x60, 0x74, 0x3e, 0xdc,
- 0xe1, 0xc6, 0xc7, 0xdd, 0xee, 0x72, 0x5a, 0x93,
- 0x6b, 0xa8, 0x14, 0x91, 0x5c, 0x67, 0x62, 0xd2
-};
-
-static const unsigned char e5[] = {
- 0xa8, 0xf9, 0xbc, 0x16, 0x12, 0xc6, 0x8b, 0x3f,
- 0xf6, 0xe6, 0xf4, 0xfb, 0xe3, 0x0e, 0x71, 0xe4,
- 0x76, 0x9c, 0x8b, 0x80, 0xa3, 0x2c, 0xb8, 0x95,
- 0x8c, 0xd5, 0xd1, 0x7d, 0x6b, 0x25, 0x4d, 0xa1
-};
-
-static const unsigned char e6[] = {
- 0x28, 0xc9, 0xf4, 0x04, 0xc4, 0xb8, 0x10, 0xf4,
- 0xcb, 0xcc, 0xb3, 0x5c, 0xfb, 0x87, 0xf8, 0x26,
- 0x3f, 0x57, 0x86, 0xe2, 0xd8, 0x0e, 0xd3, 0x26,
- 0xcb, 0xc7, 0xf0, 0xe7, 0x1a, 0x99, 0xf4, 0x3b,
- 0xfb, 0x98, 0x8b, 0x9b, 0x7a, 0x02, 0xdd, 0x21
-};
-
- AES_KEY wctx, xctx;
- int ret;
- ret = AES_wrap_unwrap_test(kek, 128, NULL, e1, key, 16);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 192, NULL, e2, key, 16);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 256, NULL, e3, key, 16);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 192, NULL, e4, key, 24);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 256, NULL, e5, key, 24);
- fprintf(stderr, "Key test result %d\n", ret);
- ret = AES_wrap_unwrap_test(kek, 256, NULL, e6, key, 32);
- fprintf(stderr, "Key test result %d\n", ret);
+ static const unsigned char kek[] = {
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
+ };
+
+ static const unsigned char key[] = {
+ 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
+ 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff,
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
+ };
+
+ static const unsigned char e1[] = {
+ 0x1f, 0xa6, 0x8b, 0x0a, 0x81, 0x12, 0xb4, 0x47,
+ 0xae, 0xf3, 0x4b, 0xd8, 0xfb, 0x5a, 0x7b, 0x82,
+ 0x9d, 0x3e, 0x86, 0x23, 0x71, 0xd2, 0xcf, 0xe5
+ };
+
+ static const unsigned char e2[] = {
+ 0x96, 0x77, 0x8b, 0x25, 0xae, 0x6c, 0xa4, 0x35,
+ 0xf9, 0x2b, 0x5b, 0x97, 0xc0, 0x50, 0xae, 0xd2,
+ 0x46, 0x8a, 0xb8, 0xa1, 0x7a, 0xd8, 0x4e, 0x5d
+ };
+
+ static const unsigned char e3[] = {
+ 0x64, 0xe8, 0xc3, 0xf9, 0xce, 0x0f, 0x5b, 0xa2,
+ 0x63, 0xe9, 0x77, 0x79, 0x05, 0x81, 0x8a, 0x2a,
+ 0x93, 0xc8, 0x19, 0x1e, 0x7d, 0x6e, 0x8a, 0xe7
+ };
+
+ static const unsigned char e4[] = {
+ 0x03, 0x1d, 0x33, 0x26, 0x4e, 0x15, 0xd3, 0x32,
+ 0x68, 0xf2, 0x4e, 0xc2, 0x60, 0x74, 0x3e, 0xdc,
+ 0xe1, 0xc6, 0xc7, 0xdd, 0xee, 0x72, 0x5a, 0x93,
+ 0x6b, 0xa8, 0x14, 0x91, 0x5c, 0x67, 0x62, 0xd2
+ };
+
+ static const unsigned char e5[] = {
+ 0xa8, 0xf9, 0xbc, 0x16, 0x12, 0xc6, 0x8b, 0x3f,
+ 0xf6, 0xe6, 0xf4, 0xfb, 0xe3, 0x0e, 0x71, 0xe4,
+ 0x76, 0x9c, 0x8b, 0x80, 0xa3, 0x2c, 0xb8, 0x95,
+ 0x8c, 0xd5, 0xd1, 0x7d, 0x6b, 0x25, 0x4d, 0xa1
+ };
+
+ static const unsigned char e6[] = {
+ 0x28, 0xc9, 0xf4, 0x04, 0xc4, 0xb8, 0x10, 0xf4,
+ 0xcb, 0xcc, 0xb3, 0x5c, 0xfb, 0x87, 0xf8, 0x26,
+ 0x3f, 0x57, 0x86, 0xe2, 0xd8, 0x0e, 0xd3, 0x26,
+ 0xcb, 0xc7, 0xf0, 0xe7, 0x1a, 0x99, 0xf4, 0x3b,
+ 0xfb, 0x98, 0x8b, 0x9b, 0x7a, 0x02, 0xdd, 0x21
+ };
+
+ AES_KEY wctx, xctx;
+ int ret;
+ ret = AES_wrap_unwrap_test(kek, 128, NULL, e1, key, 16);
+ fprintf(stderr, "Key test result %d\n", ret);
+ ret = AES_wrap_unwrap_test(kek, 192, NULL, e2, key, 16);
+ fprintf(stderr, "Key test result %d\n", ret);
+ ret = AES_wrap_unwrap_test(kek, 256, NULL, e3, key, 16);
+ fprintf(stderr, "Key test result %d\n", ret);
+ ret = AES_wrap_unwrap_test(kek, 192, NULL, e4, key, 24);
+ fprintf(stderr, "Key test result %d\n", ret);
+ ret = AES_wrap_unwrap_test(kek, 256, NULL, e5, key, 24);
+ fprintf(stderr, "Key test result %d\n", ret);
+ ret = AES_wrap_unwrap_test(kek, 256, NULL, e6, key, 32);
+ fprintf(stderr, "Key test result %d\n", ret);
}
-
-
+
#endif