2 * Wrapper functions for OpenSSL libcrypto
3 * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
10 #include <openssl/opensslv.h>
11 #include <openssl/err.h>
12 #include <openssl/des.h>
13 #include <openssl/aes.h>
14 #include <openssl/bn.h>
15 #include <openssl/evp.h>
16 #include <openssl/dh.h>
17 #include <openssl/hmac.h>
18 #include <openssl/rand.h>
19 #ifdef CONFIG_OPENSSL_CMAC
20 #include <openssl/cmac.h>
21 #endif /* CONFIG_OPENSSL_CMAC */
23 #include <openssl/ec.h>
24 #endif /* CONFIG_ECC */
28 #include "dh_group5.h"
34 static BIGNUM * get_group5_prime(void)
36 #ifdef OPENSSL_IS_BORINGSSL
37 static const unsigned char RFC3526_PRIME_1536[] = {
38 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xC9,0x0F,0xDA,0xA2,
39 0x21,0x68,0xC2,0x34,0xC4,0xC6,0x62,0x8B,0x80,0xDC,0x1C,0xD1,
40 0x29,0x02,0x4E,0x08,0x8A,0x67,0xCC,0x74,0x02,0x0B,0xBE,0xA6,
41 0x3B,0x13,0x9B,0x22,0x51,0x4A,0x08,0x79,0x8E,0x34,0x04,0xDD,
42 0xEF,0x95,0x19,0xB3,0xCD,0x3A,0x43,0x1B,0x30,0x2B,0x0A,0x6D,
43 0xF2,0x5F,0x14,0x37,0x4F,0xE1,0x35,0x6D,0x6D,0x51,0xC2,0x45,
44 0xE4,0x85,0xB5,0x76,0x62,0x5E,0x7E,0xC6,0xF4,0x4C,0x42,0xE9,
45 0xA6,0x37,0xED,0x6B,0x0B,0xFF,0x5C,0xB6,0xF4,0x06,0xB7,0xED,
46 0xEE,0x38,0x6B,0xFB,0x5A,0x89,0x9F,0xA5,0xAE,0x9F,0x24,0x11,
47 0x7C,0x4B,0x1F,0xE6,0x49,0x28,0x66,0x51,0xEC,0xE4,0x5B,0x3D,
48 0xC2,0x00,0x7C,0xB8,0xA1,0x63,0xBF,0x05,0x98,0xDA,0x48,0x36,
49 0x1C,0x55,0xD3,0x9A,0x69,0x16,0x3F,0xA8,0xFD,0x24,0xCF,0x5F,
50 0x83,0x65,0x5D,0x23,0xDC,0xA3,0xAD,0x96,0x1C,0x62,0xF3,0x56,
51 0x20,0x85,0x52,0xBB,0x9E,0xD5,0x29,0x07,0x70,0x96,0x96,0x6D,
52 0x67,0x0C,0x35,0x4E,0x4A,0xBC,0x98,0x04,0xF1,0x74,0x6C,0x08,
53 0xCA,0x23,0x73,0x27,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
55 return BN_bin2bn(RFC3526_PRIME_1536, sizeof(RFC3526_PRIME_1536), NULL);
56 #else /* OPENSSL_IS_BORINGSSL */
57 return get_rfc3526_prime_1536(NULL);
58 #endif /* OPENSSL_IS_BORINGSSL */
61 #ifdef OPENSSL_NO_SHA256
62 #define NO_SHA256_WRAPPER
65 static int openssl_digest_vector(const EVP_MD *type, size_t num_elem,
66 const u8 *addr[], const size_t *len, u8 *mac)
72 EVP_MD_CTX_init(&ctx);
73 if (!EVP_DigestInit_ex(&ctx, type, NULL)) {
74 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestInit_ex failed: %s",
75 ERR_error_string(ERR_get_error(), NULL));
78 for (i = 0; i < num_elem; i++) {
79 if (!EVP_DigestUpdate(&ctx, addr[i], len[i])) {
80 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestUpdate "
82 ERR_error_string(ERR_get_error(), NULL));
86 if (!EVP_DigestFinal(&ctx, mac, &mac_len)) {
87 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestFinal failed: %s",
88 ERR_error_string(ERR_get_error(), NULL));
97 int md4_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
99 return openssl_digest_vector(EVP_md4(), num_elem, addr, len, mac);
101 #endif /* CONFIG_FIPS */
104 void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
106 u8 pkey[8], next, tmp;
110 /* Add parity bits to the key */
112 for (i = 0; i < 7; i++) {
114 pkey[i] = (tmp >> i) | next | 1;
115 next = tmp << (7 - i);
119 DES_set_key((DES_cblock *) &pkey, &ks);
120 DES_ecb_encrypt((DES_cblock *) clear, (DES_cblock *) cypher, &ks,
125 #ifndef CONFIG_NO_RC4
126 int rc4_skip(const u8 *key, size_t keylen, size_t skip,
127 u8 *data, size_t data_len)
129 #ifdef OPENSSL_NO_RC4
131 #else /* OPENSSL_NO_RC4 */
135 unsigned char skip_buf[16];
137 EVP_CIPHER_CTX_init(&ctx);
138 if (!EVP_CIPHER_CTX_set_padding(&ctx, 0) ||
139 !EVP_CipherInit_ex(&ctx, EVP_rc4(), NULL, NULL, NULL, 1) ||
140 !EVP_CIPHER_CTX_set_key_length(&ctx, keylen) ||
141 !EVP_CipherInit_ex(&ctx, NULL, NULL, key, NULL, 1))
144 while (skip >= sizeof(skip_buf)) {
146 if (len > sizeof(skip_buf))
147 len = sizeof(skip_buf);
148 if (!EVP_CipherUpdate(&ctx, skip_buf, &outl, skip_buf, len))
153 if (EVP_CipherUpdate(&ctx, data, &outl, data, data_len))
157 EVP_CIPHER_CTX_cleanup(&ctx);
159 #endif /* OPENSSL_NO_RC4 */
161 #endif /* CONFIG_NO_RC4 */
165 int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
167 return openssl_digest_vector(EVP_md5(), num_elem, addr, len, mac);
169 #endif /* CONFIG_FIPS */
172 int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
174 return openssl_digest_vector(EVP_sha1(), num_elem, addr, len, mac);
178 #ifndef NO_SHA256_WRAPPER
179 int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
182 return openssl_digest_vector(EVP_sha256(), num_elem, addr, len, mac);
184 #endif /* NO_SHA256_WRAPPER */
187 static const EVP_CIPHER * aes_get_evp_cipher(size_t keylen)
191 return EVP_aes_128_ecb();
192 #ifndef OPENSSL_IS_BORINGSSL
194 return EVP_aes_192_ecb();
195 #endif /* OPENSSL_IS_BORINGSSL */
197 return EVP_aes_256_ecb();
204 void * aes_encrypt_init(const u8 *key, size_t len)
207 const EVP_CIPHER *type;
209 type = aes_get_evp_cipher(len);
213 ctx = os_malloc(sizeof(*ctx));
216 EVP_CIPHER_CTX_init(ctx);
217 if (EVP_EncryptInit_ex(ctx, type, NULL, key, NULL) != 1) {
221 EVP_CIPHER_CTX_set_padding(ctx, 0);
226 void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
228 EVP_CIPHER_CTX *c = ctx;
230 if (EVP_EncryptUpdate(c, crypt, &clen, plain, 16) != 1) {
231 wpa_printf(MSG_ERROR, "OpenSSL: EVP_EncryptUpdate failed: %s",
232 ERR_error_string(ERR_get_error(), NULL));
237 void aes_encrypt_deinit(void *ctx)
239 EVP_CIPHER_CTX *c = ctx;
241 int len = sizeof(buf);
242 if (EVP_EncryptFinal_ex(c, buf, &len) != 1) {
243 wpa_printf(MSG_ERROR, "OpenSSL: EVP_EncryptFinal_ex failed: "
244 "%s", ERR_error_string(ERR_get_error(), NULL));
247 wpa_printf(MSG_ERROR, "OpenSSL: Unexpected padding length %d "
248 "in AES encrypt", len);
250 EVP_CIPHER_CTX_cleanup(c);
251 bin_clear_free(c, sizeof(*c));
255 void * aes_decrypt_init(const u8 *key, size_t len)
258 const EVP_CIPHER *type;
260 type = aes_get_evp_cipher(len);
264 ctx = os_malloc(sizeof(*ctx));
267 EVP_CIPHER_CTX_init(ctx);
268 if (EVP_DecryptInit_ex(ctx, type, NULL, key, NULL) != 1) {
272 EVP_CIPHER_CTX_set_padding(ctx, 0);
277 void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
279 EVP_CIPHER_CTX *c = ctx;
281 if (EVP_DecryptUpdate(c, plain, &plen, crypt, 16) != 1) {
282 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DecryptUpdate failed: %s",
283 ERR_error_string(ERR_get_error(), NULL));
288 void aes_decrypt_deinit(void *ctx)
290 EVP_CIPHER_CTX *c = ctx;
292 int len = sizeof(buf);
293 if (EVP_DecryptFinal_ex(c, buf, &len) != 1) {
294 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DecryptFinal_ex failed: "
295 "%s", ERR_error_string(ERR_get_error(), NULL));
298 wpa_printf(MSG_ERROR, "OpenSSL: Unexpected padding length %d "
299 "in AES decrypt", len);
301 EVP_CIPHER_CTX_cleanup(c);
302 bin_clear_free(c, sizeof(*c));
307 #ifndef CONFIG_OPENSSL_INTERNAL_AES_WRAP
309 int aes_wrap(const u8 *kek, size_t kek_len, int n, const u8 *plain, u8 *cipher)
314 if (AES_set_encrypt_key(kek, kek_len << 3, &actx))
316 res = AES_wrap_key(&actx, NULL, cipher, plain, n * 8);
317 OPENSSL_cleanse(&actx, sizeof(actx));
318 return res <= 0 ? -1 : 0;
322 int aes_unwrap(const u8 *kek, size_t kek_len, int n, const u8 *cipher,
328 if (AES_set_decrypt_key(kek, kek_len << 3, &actx))
330 res = AES_unwrap_key(&actx, NULL, plain, cipher, (n + 1) * 8);
331 OPENSSL_cleanse(&actx, sizeof(actx));
332 return res <= 0 ? -1 : 0;
335 #endif /* CONFIG_OPENSSL_INTERNAL_AES_WRAP */
336 #endif /* CONFIG_FIPS */
339 int aes_128_cbc_encrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
345 EVP_CIPHER_CTX_init(&ctx);
346 if (EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, key, iv) != 1)
348 EVP_CIPHER_CTX_set_padding(&ctx, 0);
351 if (EVP_EncryptUpdate(&ctx, data, &clen, data, data_len) != 1 ||
352 clen != (int) data_len)
356 if (EVP_EncryptFinal_ex(&ctx, buf, &len) != 1 || len != 0)
358 EVP_CIPHER_CTX_cleanup(&ctx);
364 int aes_128_cbc_decrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
370 EVP_CIPHER_CTX_init(&ctx);
371 if (EVP_DecryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, key, iv) != 1)
373 EVP_CIPHER_CTX_set_padding(&ctx, 0);
376 if (EVP_DecryptUpdate(&ctx, data, &plen, data, data_len) != 1 ||
377 plen != (int) data_len)
381 if (EVP_DecryptFinal_ex(&ctx, buf, &len) != 1 || len != 0)
383 EVP_CIPHER_CTX_cleanup(&ctx);
389 int crypto_mod_exp(const u8 *base, size_t base_len,
390 const u8 *power, size_t power_len,
391 const u8 *modulus, size_t modulus_len,
392 u8 *result, size_t *result_len)
394 BIGNUM *bn_base, *bn_exp, *bn_modulus, *bn_result;
402 bn_base = BN_bin2bn(base, base_len, NULL);
403 bn_exp = BN_bin2bn(power, power_len, NULL);
404 bn_modulus = BN_bin2bn(modulus, modulus_len, NULL);
405 bn_result = BN_new();
407 if (bn_base == NULL || bn_exp == NULL || bn_modulus == NULL ||
411 if (BN_mod_exp(bn_result, bn_base, bn_exp, bn_modulus, ctx) != 1)
414 *result_len = BN_bn2bin(bn_result, result);
418 BN_clear_free(bn_base);
419 BN_clear_free(bn_exp);
420 BN_clear_free(bn_modulus);
421 BN_clear_free(bn_result);
427 struct crypto_cipher {
433 struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
434 const u8 *iv, const u8 *key,
437 struct crypto_cipher *ctx;
438 const EVP_CIPHER *cipher;
440 ctx = os_zalloc(sizeof(*ctx));
445 #ifndef CONFIG_NO_RC4
446 #ifndef OPENSSL_NO_RC4
447 case CRYPTO_CIPHER_ALG_RC4:
450 #endif /* OPENSSL_NO_RC4 */
451 #endif /* CONFIG_NO_RC4 */
452 #ifndef OPENSSL_NO_AES
453 case CRYPTO_CIPHER_ALG_AES:
456 cipher = EVP_aes_128_cbc();
458 #ifndef OPENSSL_IS_BORINGSSL
460 cipher = EVP_aes_192_cbc();
462 #endif /* OPENSSL_IS_BORINGSSL */
464 cipher = EVP_aes_256_cbc();
471 #endif /* OPENSSL_NO_AES */
472 #ifndef OPENSSL_NO_DES
473 case CRYPTO_CIPHER_ALG_3DES:
474 cipher = EVP_des_ede3_cbc();
476 case CRYPTO_CIPHER_ALG_DES:
477 cipher = EVP_des_cbc();
479 #endif /* OPENSSL_NO_DES */
480 #ifndef OPENSSL_NO_RC2
481 case CRYPTO_CIPHER_ALG_RC2:
482 cipher = EVP_rc2_ecb();
484 #endif /* OPENSSL_NO_RC2 */
490 EVP_CIPHER_CTX_init(&ctx->enc);
491 EVP_CIPHER_CTX_set_padding(&ctx->enc, 0);
492 if (!EVP_EncryptInit_ex(&ctx->enc, cipher, NULL, NULL, NULL) ||
493 !EVP_CIPHER_CTX_set_key_length(&ctx->enc, key_len) ||
494 !EVP_EncryptInit_ex(&ctx->enc, NULL, NULL, key, iv)) {
495 EVP_CIPHER_CTX_cleanup(&ctx->enc);
500 EVP_CIPHER_CTX_init(&ctx->dec);
501 EVP_CIPHER_CTX_set_padding(&ctx->dec, 0);
502 if (!EVP_DecryptInit_ex(&ctx->dec, cipher, NULL, NULL, NULL) ||
503 !EVP_CIPHER_CTX_set_key_length(&ctx->dec, key_len) ||
504 !EVP_DecryptInit_ex(&ctx->dec, NULL, NULL, key, iv)) {
505 EVP_CIPHER_CTX_cleanup(&ctx->enc);
506 EVP_CIPHER_CTX_cleanup(&ctx->dec);
515 int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
516 u8 *crypt, size_t len)
519 if (!EVP_EncryptUpdate(&ctx->enc, crypt, &outl, plain, len))
525 int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
526 u8 *plain, size_t len)
530 if (!EVP_DecryptUpdate(&ctx->dec, plain, &outl, crypt, len))
536 void crypto_cipher_deinit(struct crypto_cipher *ctx)
538 EVP_CIPHER_CTX_cleanup(&ctx->enc);
539 EVP_CIPHER_CTX_cleanup(&ctx->dec);
544 void * dh5_init(struct wpabuf **priv, struct wpabuf **publ)
547 struct wpabuf *pubkey = NULL, *privkey = NULL;
548 size_t publen, privlen;
558 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
561 dh->p = get_group5_prime();
565 if (DH_generate_key(dh) != 1)
568 publen = BN_num_bytes(dh->pub_key);
569 pubkey = wpabuf_alloc(publen);
572 privlen = BN_num_bytes(dh->priv_key);
573 privkey = wpabuf_alloc(privlen);
577 BN_bn2bin(dh->pub_key, wpabuf_put(pubkey, publen));
578 BN_bn2bin(dh->priv_key, wpabuf_put(privkey, privlen));
585 wpabuf_clear_free(pubkey);
586 wpabuf_clear_free(privkey);
592 void * dh5_init_fixed(const struct wpabuf *priv, const struct wpabuf *publ)
601 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
604 dh->p = get_group5_prime();
608 dh->priv_key = BN_bin2bn(wpabuf_head(priv), wpabuf_len(priv), NULL);
609 if (dh->priv_key == NULL)
612 dh->pub_key = BN_bin2bn(wpabuf_head(publ), wpabuf_len(publ), NULL);
613 if (dh->pub_key == NULL)
616 if (DH_generate_key(dh) != 1)
627 struct wpabuf * dh5_derive_shared(void *ctx, const struct wpabuf *peer_public,
628 const struct wpabuf *own_private)
631 struct wpabuf *res = NULL;
639 pub_key = BN_bin2bn(wpabuf_head(peer_public), wpabuf_len(peer_public),
645 res = wpabuf_alloc(rlen);
649 keylen = DH_compute_key(wpabuf_mhead(res), pub_key, dh);
652 wpabuf_put(res, keylen);
653 BN_clear_free(pub_key);
658 BN_clear_free(pub_key);
659 wpabuf_clear_free(res);
664 void dh5_free(void *ctx)
679 struct crypto_hash * crypto_hash_init(enum crypto_hash_alg alg, const u8 *key,
682 struct crypto_hash *ctx;
686 #ifndef OPENSSL_NO_MD5
687 case CRYPTO_HASH_ALG_HMAC_MD5:
690 #endif /* OPENSSL_NO_MD5 */
691 #ifndef OPENSSL_NO_SHA
692 case CRYPTO_HASH_ALG_HMAC_SHA1:
695 #endif /* OPENSSL_NO_SHA */
696 #ifndef OPENSSL_NO_SHA256
698 case CRYPTO_HASH_ALG_HMAC_SHA256:
701 #endif /* CONFIG_SHA256 */
702 #endif /* OPENSSL_NO_SHA256 */
707 ctx = os_zalloc(sizeof(*ctx));
710 HMAC_CTX_init(&ctx->ctx);
712 #if OPENSSL_VERSION_NUMBER < 0x00909000
713 HMAC_Init_ex(&ctx->ctx, key, key_len, md, NULL);
714 #else /* openssl < 0.9.9 */
715 if (HMAC_Init_ex(&ctx->ctx, key, key_len, md, NULL) != 1) {
716 bin_clear_free(ctx, sizeof(*ctx));
719 #endif /* openssl < 0.9.9 */
725 void crypto_hash_update(struct crypto_hash *ctx, const u8 *data, size_t len)
729 HMAC_Update(&ctx->ctx, data, len);
733 int crypto_hash_finish(struct crypto_hash *ctx, u8 *mac, size_t *len)
741 if (mac == NULL || len == NULL) {
742 bin_clear_free(ctx, sizeof(*ctx));
747 #if OPENSSL_VERSION_NUMBER < 0x00909000
748 HMAC_Final(&ctx->ctx, mac, &mdlen);
750 #else /* openssl < 0.9.9 */
751 res = HMAC_Final(&ctx->ctx, mac, &mdlen);
752 #endif /* openssl < 0.9.9 */
753 HMAC_CTX_cleanup(&ctx->ctx);
754 bin_clear_free(ctx, sizeof(*ctx));
765 static int openssl_hmac_vector(const EVP_MD *type, const u8 *key,
766 size_t key_len, size_t num_elem,
767 const u8 *addr[], const size_t *len, u8 *mac,
775 #if OPENSSL_VERSION_NUMBER < 0x00909000
776 HMAC_Init_ex(&ctx, key, key_len, type, NULL);
777 #else /* openssl < 0.9.9 */
778 if (HMAC_Init_ex(&ctx, key, key_len, type, NULL) != 1)
780 #endif /* openssl < 0.9.9 */
782 for (i = 0; i < num_elem; i++)
783 HMAC_Update(&ctx, addr[i], len[i]);
785 #if OPENSSL_VERSION_NUMBER < 0x00909000
786 HMAC_Final(&ctx, mac, &mdlen);
788 #else /* openssl < 0.9.9 */
789 res = HMAC_Final(&ctx, mac, &mdlen);
790 #endif /* openssl < 0.9.9 */
791 HMAC_CTX_cleanup(&ctx);
793 return res == 1 ? 0 : -1;
799 int hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
800 const u8 *addr[], const size_t *len, u8 *mac)
802 return openssl_hmac_vector(EVP_md5(), key ,key_len, num_elem, addr, len,
807 int hmac_md5(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
810 return hmac_md5_vector(key, key_len, 1, &data, &data_len, mac);
813 #endif /* CONFIG_FIPS */
816 int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len,
817 int iterations, u8 *buf, size_t buflen)
819 if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase), ssid,
820 ssid_len, iterations, buflen, buf) != 1)
826 int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem,
827 const u8 *addr[], const size_t *len, u8 *mac)
829 return openssl_hmac_vector(EVP_sha1(), key, key_len, num_elem, addr,
834 int hmac_sha1(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
837 return hmac_sha1_vector(key, key_len, 1, &data, &data_len, mac);
843 int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
844 const u8 *addr[], const size_t *len, u8 *mac)
846 return openssl_hmac_vector(EVP_sha256(), key, key_len, num_elem, addr,
851 int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
852 size_t data_len, u8 *mac)
854 return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac);
857 #endif /* CONFIG_SHA256 */
862 int hmac_sha384_vector(const u8 *key, size_t key_len, size_t num_elem,
863 const u8 *addr[], const size_t *len, u8 *mac)
865 return openssl_hmac_vector(EVP_sha384(), key, key_len, num_elem, addr,
870 int hmac_sha384(const u8 *key, size_t key_len, const u8 *data,
871 size_t data_len, u8 *mac)
873 return hmac_sha384_vector(key, key_len, 1, &data, &data_len, mac);
876 #endif /* CONFIG_SHA384 */
879 int crypto_get_random(void *buf, size_t len)
881 if (RAND_bytes(buf, len) != 1)
887 #ifdef CONFIG_OPENSSL_CMAC
888 int omac1_aes_vector(const u8 *key, size_t key_len, size_t num_elem,
889 const u8 *addr[], const size_t *len, u8 *mac)
895 ctx = CMAC_CTX_new();
900 if (!CMAC_Init(ctx, key, 32, EVP_aes_256_cbc(), NULL))
902 } else if (key_len == 16) {
903 if (!CMAC_Init(ctx, key, 16, EVP_aes_128_cbc(), NULL))
908 for (i = 0; i < num_elem; i++) {
909 if (!CMAC_Update(ctx, addr[i], len[i]))
912 if (!CMAC_Final(ctx, mac, &outlen) || outlen != 16)
922 int omac1_aes_128_vector(const u8 *key, size_t num_elem,
923 const u8 *addr[], const size_t *len, u8 *mac)
925 return omac1_aes_vector(key, 16, num_elem, addr, len, mac);
929 int omac1_aes_128(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
931 return omac1_aes_128_vector(key, 1, &data, &data_len, mac);
935 int omac1_aes_256(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
937 return omac1_aes_vector(key, 32, 1, &data, &data_len, mac);
939 #endif /* CONFIG_OPENSSL_CMAC */
942 struct crypto_bignum * crypto_bignum_init(void)
944 return (struct crypto_bignum *) BN_new();
948 struct crypto_bignum * crypto_bignum_init_set(const u8 *buf, size_t len)
950 BIGNUM *bn = BN_bin2bn(buf, len, NULL);
951 return (struct crypto_bignum *) bn;
955 void crypto_bignum_deinit(struct crypto_bignum *n, int clear)
958 BN_clear_free((BIGNUM *) n);
960 BN_free((BIGNUM *) n);
964 int crypto_bignum_to_bin(const struct crypto_bignum *a,
965 u8 *buf, size_t buflen, size_t padlen)
967 int num_bytes, offset;
972 num_bytes = BN_num_bytes((const BIGNUM *) a);
973 if ((size_t) num_bytes > buflen)
975 if (padlen > (size_t) num_bytes)
976 offset = padlen - num_bytes;
980 os_memset(buf, 0, offset);
981 BN_bn2bin((const BIGNUM *) a, buf + offset);
983 return num_bytes + offset;
987 int crypto_bignum_add(const struct crypto_bignum *a,
988 const struct crypto_bignum *b,
989 struct crypto_bignum *c)
991 return BN_add((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
996 int crypto_bignum_mod(const struct crypto_bignum *a,
997 const struct crypto_bignum *b,
998 struct crypto_bignum *c)
1003 bnctx = BN_CTX_new();
1006 res = BN_mod((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b,
1010 return res ? 0 : -1;
1014 int crypto_bignum_exptmod(const struct crypto_bignum *a,
1015 const struct crypto_bignum *b,
1016 const struct crypto_bignum *c,
1017 struct crypto_bignum *d)
1022 bnctx = BN_CTX_new();
1025 res = BN_mod_exp((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1026 (const BIGNUM *) c, bnctx);
1029 return res ? 0 : -1;
1033 int crypto_bignum_inverse(const struct crypto_bignum *a,
1034 const struct crypto_bignum *b,
1035 struct crypto_bignum *c)
1040 bnctx = BN_CTX_new();
1043 res = BN_mod_inverse((BIGNUM *) c, (const BIGNUM *) a,
1044 (const BIGNUM *) b, bnctx);
1047 return res ? 0 : -1;
1051 int crypto_bignum_sub(const struct crypto_bignum *a,
1052 const struct crypto_bignum *b,
1053 struct crypto_bignum *c)
1055 return BN_sub((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
1060 int crypto_bignum_div(const struct crypto_bignum *a,
1061 const struct crypto_bignum *b,
1062 struct crypto_bignum *c)
1068 bnctx = BN_CTX_new();
1071 res = BN_div((BIGNUM *) c, NULL, (const BIGNUM *) a,
1072 (const BIGNUM *) b, bnctx);
1075 return res ? 0 : -1;
1079 int crypto_bignum_mulmod(const struct crypto_bignum *a,
1080 const struct crypto_bignum *b,
1081 const struct crypto_bignum *c,
1082 struct crypto_bignum *d)
1088 bnctx = BN_CTX_new();
1091 res = BN_mod_mul((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1092 (const BIGNUM *) c, bnctx);
1095 return res ? 0 : -1;
1099 int crypto_bignum_cmp(const struct crypto_bignum *a,
1100 const struct crypto_bignum *b)
1102 return BN_cmp((const BIGNUM *) a, (const BIGNUM *) b);
1106 int crypto_bignum_bits(const struct crypto_bignum *a)
1108 return BN_num_bits((const BIGNUM *) a);
1112 int crypto_bignum_is_zero(const struct crypto_bignum *a)
1114 return BN_is_zero((const BIGNUM *) a);
1118 int crypto_bignum_is_one(const struct crypto_bignum *a)
1120 return BN_is_one((const BIGNUM *) a);
1124 int crypto_bignum_legendre(const struct crypto_bignum *a,
1125 const struct crypto_bignum *p)
1128 BIGNUM *exp = NULL, *tmp = NULL;
1131 bnctx = BN_CTX_new();
1138 /* exp = (p-1) / 2 */
1139 !BN_sub(exp, (const BIGNUM *) p, BN_value_one()) ||
1140 !BN_rshift1(exp, exp) ||
1141 !BN_mod_exp(tmp, (const BIGNUM *) a, exp, (const BIGNUM *) p,
1145 if (BN_is_word(tmp, 1))
1147 else if (BN_is_zero(tmp))
1171 struct crypto_ec * crypto_ec_init(int group)
1173 struct crypto_ec *e;
1176 /* Map from IANA registry for IKE D-H groups to OpenSSL NID */
1179 nid = NID_X9_62_prime256v1;
1182 nid = NID_secp384r1;
1185 nid = NID_secp521r1;
1188 nid = NID_X9_62_prime192v1;
1191 nid = NID_secp224r1;
1193 #ifdef NID_brainpoolP224r1
1195 nid = NID_brainpoolP224r1;
1197 #endif /* NID_brainpoolP224r1 */
1198 #ifdef NID_brainpoolP256r1
1200 nid = NID_brainpoolP256r1;
1202 #endif /* NID_brainpoolP256r1 */
1203 #ifdef NID_brainpoolP384r1
1205 nid = NID_brainpoolP384r1;
1207 #endif /* NID_brainpoolP384r1 */
1208 #ifdef NID_brainpoolP512r1
1210 nid = NID_brainpoolP512r1;
1212 #endif /* NID_brainpoolP512r1 */
1217 e = os_zalloc(sizeof(*e));
1221 e->bnctx = BN_CTX_new();
1222 e->group = EC_GROUP_new_by_curve_name(nid);
1223 e->prime = BN_new();
1224 e->order = BN_new();
1227 if (e->group == NULL || e->bnctx == NULL || e->prime == NULL ||
1228 e->order == NULL || e->a == NULL || e->b == NULL ||
1229 !EC_GROUP_get_curve_GFp(e->group, e->prime, e->a, e->b, e->bnctx) ||
1230 !EC_GROUP_get_order(e->group, e->order, e->bnctx)) {
1231 crypto_ec_deinit(e);
1239 void crypto_ec_deinit(struct crypto_ec *e)
1243 BN_clear_free(e->b);
1244 BN_clear_free(e->a);
1245 BN_clear_free(e->order);
1246 BN_clear_free(e->prime);
1247 EC_GROUP_free(e->group);
1248 BN_CTX_free(e->bnctx);
1253 struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e)
1257 return (struct crypto_ec_point *) EC_POINT_new(e->group);
1261 size_t crypto_ec_prime_len(struct crypto_ec *e)
1263 return BN_num_bytes(e->prime);
1267 size_t crypto_ec_prime_len_bits(struct crypto_ec *e)
1269 return BN_num_bits(e->prime);
1273 const struct crypto_bignum * crypto_ec_get_prime(struct crypto_ec *e)
1275 return (const struct crypto_bignum *) e->prime;
1279 const struct crypto_bignum * crypto_ec_get_order(struct crypto_ec *e)
1281 return (const struct crypto_bignum *) e->order;
1285 void crypto_ec_point_deinit(struct crypto_ec_point *p, int clear)
1288 EC_POINT_clear_free((EC_POINT *) p);
1290 EC_POINT_free((EC_POINT *) p);
1294 int crypto_ec_point_to_bin(struct crypto_ec *e,
1295 const struct crypto_ec_point *point, u8 *x, u8 *y)
1297 BIGNUM *x_bn, *y_bn;
1299 int len = BN_num_bytes(e->prime);
1305 EC_POINT_get_affine_coordinates_GFp(e->group, (EC_POINT *) point,
1306 x_bn, y_bn, e->bnctx)) {
1308 crypto_bignum_to_bin((struct crypto_bignum *) x_bn,
1312 crypto_bignum_to_bin((struct crypto_bignum *) y_bn,
1318 BN_clear_free(x_bn);
1319 BN_clear_free(y_bn);
1324 struct crypto_ec_point * crypto_ec_point_from_bin(struct crypto_ec *e,
1329 int len = BN_num_bytes(e->prime);
1331 x = BN_bin2bn(val, len, NULL);
1332 y = BN_bin2bn(val + len, len, NULL);
1333 elem = EC_POINT_new(e->group);
1334 if (x == NULL || y == NULL || elem == NULL) {
1337 EC_POINT_clear_free(elem);
1341 if (!EC_POINT_set_affine_coordinates_GFp(e->group, elem, x, y,
1343 EC_POINT_clear_free(elem);
1350 return (struct crypto_ec_point *) elem;
1354 int crypto_ec_point_add(struct crypto_ec *e, const struct crypto_ec_point *a,
1355 const struct crypto_ec_point *b,
1356 struct crypto_ec_point *c)
1358 return EC_POINT_add(e->group, (EC_POINT *) c, (const EC_POINT *) a,
1359 (const EC_POINT *) b, e->bnctx) ? 0 : -1;
1363 int crypto_ec_point_mul(struct crypto_ec *e, const struct crypto_ec_point *p,
1364 const struct crypto_bignum *b,
1365 struct crypto_ec_point *res)
1367 return EC_POINT_mul(e->group, (EC_POINT *) res, NULL,
1368 (const EC_POINT *) p, (const BIGNUM *) b, e->bnctx)
1373 int crypto_ec_point_invert(struct crypto_ec *e, struct crypto_ec_point *p)
1375 return EC_POINT_invert(e->group, (EC_POINT *) p, e->bnctx) ? 0 : -1;
1379 int crypto_ec_point_solve_y_coord(struct crypto_ec *e,
1380 struct crypto_ec_point *p,
1381 const struct crypto_bignum *x, int y_bit)
1383 if (!EC_POINT_set_compressed_coordinates_GFp(e->group, (EC_POINT *) p,
1384 (const BIGNUM *) x, y_bit,
1386 !EC_POINT_is_on_curve(e->group, (EC_POINT *) p, e->bnctx))
1392 struct crypto_bignum *
1393 crypto_ec_point_compute_y_sqr(struct crypto_ec *e,
1394 const struct crypto_bignum *x)
1396 BIGNUM *tmp, *tmp2, *y_sqr = NULL;
1401 /* y^2 = x^3 + ax + b */
1403 BN_mod_sqr(tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1404 BN_mod_mul(tmp, tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1405 BN_mod_mul(tmp2, e->a, (const BIGNUM *) x, e->prime, e->bnctx) &&
1406 BN_mod_add_quick(tmp2, tmp2, tmp, e->prime) &&
1407 BN_mod_add_quick(tmp2, tmp2, e->b, e->prime)) {
1413 BN_clear_free(tmp2);
1415 return (struct crypto_bignum *) y_sqr;
1419 int crypto_ec_point_is_at_infinity(struct crypto_ec *e,
1420 const struct crypto_ec_point *p)
1422 return EC_POINT_is_at_infinity(e->group, (const EC_POINT *) p);
1426 int crypto_ec_point_is_on_curve(struct crypto_ec *e,
1427 const struct crypto_ec_point *p)
1429 return EC_POINT_is_on_curve(e->group, (const EC_POINT *) p,
1434 int crypto_ec_point_cmp(const struct crypto_ec *e,
1435 const struct crypto_ec_point *a,
1436 const struct crypto_ec_point *b)
1438 return EC_POINT_cmp(e->group, (const EC_POINT *) a,
1439 (const EC_POINT *) b, e->bnctx);
1442 #endif /* CONFIG_ECC */