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));
308 int aes_wrap(const u8 *kek, size_t kek_len, int n, const u8 *plain, u8 *cipher)
313 if (AES_set_encrypt_key(kek, kek_len << 3, &actx))
315 res = AES_wrap_key(&actx, NULL, cipher, plain, n * 8);
316 OPENSSL_cleanse(&actx, sizeof(actx));
317 return res <= 0 ? -1 : 0;
321 int aes_unwrap(const u8 *kek, size_t kek_len, int n, const u8 *cipher,
327 if (AES_set_decrypt_key(kek, kek_len << 3, &actx))
329 res = AES_unwrap_key(&actx, NULL, plain, cipher, (n + 1) * 8);
330 OPENSSL_cleanse(&actx, sizeof(actx));
331 return res <= 0 ? -1 : 0;
334 #endif /* CONFIG_FIPS */
337 int aes_128_cbc_encrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
343 EVP_CIPHER_CTX_init(&ctx);
344 if (EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, key, iv) != 1)
346 EVP_CIPHER_CTX_set_padding(&ctx, 0);
349 if (EVP_EncryptUpdate(&ctx, data, &clen, data, data_len) != 1 ||
350 clen != (int) data_len)
354 if (EVP_EncryptFinal_ex(&ctx, buf, &len) != 1 || len != 0)
356 EVP_CIPHER_CTX_cleanup(&ctx);
362 int aes_128_cbc_decrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
368 EVP_CIPHER_CTX_init(&ctx);
369 if (EVP_DecryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, key, iv) != 1)
371 EVP_CIPHER_CTX_set_padding(&ctx, 0);
374 if (EVP_DecryptUpdate(&ctx, data, &plen, data, data_len) != 1 ||
375 plen != (int) data_len)
379 if (EVP_DecryptFinal_ex(&ctx, buf, &len) != 1 || len != 0)
381 EVP_CIPHER_CTX_cleanup(&ctx);
387 int crypto_mod_exp(const u8 *base, size_t base_len,
388 const u8 *power, size_t power_len,
389 const u8 *modulus, size_t modulus_len,
390 u8 *result, size_t *result_len)
392 BIGNUM *bn_base, *bn_exp, *bn_modulus, *bn_result;
400 bn_base = BN_bin2bn(base, base_len, NULL);
401 bn_exp = BN_bin2bn(power, power_len, NULL);
402 bn_modulus = BN_bin2bn(modulus, modulus_len, NULL);
403 bn_result = BN_new();
405 if (bn_base == NULL || bn_exp == NULL || bn_modulus == NULL ||
409 if (BN_mod_exp(bn_result, bn_base, bn_exp, bn_modulus, ctx) != 1)
412 *result_len = BN_bn2bin(bn_result, result);
416 BN_clear_free(bn_base);
417 BN_clear_free(bn_exp);
418 BN_clear_free(bn_modulus);
419 BN_clear_free(bn_result);
425 struct crypto_cipher {
431 struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
432 const u8 *iv, const u8 *key,
435 struct crypto_cipher *ctx;
436 const EVP_CIPHER *cipher;
438 ctx = os_zalloc(sizeof(*ctx));
443 #ifndef CONFIG_NO_RC4
444 #ifndef OPENSSL_NO_RC4
445 case CRYPTO_CIPHER_ALG_RC4:
448 #endif /* OPENSSL_NO_RC4 */
449 #endif /* CONFIG_NO_RC4 */
450 #ifndef OPENSSL_NO_AES
451 case CRYPTO_CIPHER_ALG_AES:
454 cipher = EVP_aes_128_cbc();
456 #ifndef OPENSSL_IS_BORINGSSL
458 cipher = EVP_aes_192_cbc();
460 #endif /* OPENSSL_IS_BORINGSSL */
462 cipher = EVP_aes_256_cbc();
469 #endif /* OPENSSL_NO_AES */
470 #ifndef OPENSSL_NO_DES
471 case CRYPTO_CIPHER_ALG_3DES:
472 cipher = EVP_des_ede3_cbc();
474 case CRYPTO_CIPHER_ALG_DES:
475 cipher = EVP_des_cbc();
477 #endif /* OPENSSL_NO_DES */
478 #ifndef OPENSSL_NO_RC2
479 case CRYPTO_CIPHER_ALG_RC2:
480 cipher = EVP_rc2_ecb();
482 #endif /* OPENSSL_NO_RC2 */
488 EVP_CIPHER_CTX_init(&ctx->enc);
489 EVP_CIPHER_CTX_set_padding(&ctx->enc, 0);
490 if (!EVP_EncryptInit_ex(&ctx->enc, cipher, NULL, NULL, NULL) ||
491 !EVP_CIPHER_CTX_set_key_length(&ctx->enc, key_len) ||
492 !EVP_EncryptInit_ex(&ctx->enc, NULL, NULL, key, iv)) {
493 EVP_CIPHER_CTX_cleanup(&ctx->enc);
498 EVP_CIPHER_CTX_init(&ctx->dec);
499 EVP_CIPHER_CTX_set_padding(&ctx->dec, 0);
500 if (!EVP_DecryptInit_ex(&ctx->dec, cipher, NULL, NULL, NULL) ||
501 !EVP_CIPHER_CTX_set_key_length(&ctx->dec, key_len) ||
502 !EVP_DecryptInit_ex(&ctx->dec, NULL, NULL, key, iv)) {
503 EVP_CIPHER_CTX_cleanup(&ctx->enc);
504 EVP_CIPHER_CTX_cleanup(&ctx->dec);
513 int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
514 u8 *crypt, size_t len)
517 if (!EVP_EncryptUpdate(&ctx->enc, crypt, &outl, plain, len))
523 int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
524 u8 *plain, size_t len)
528 if (!EVP_DecryptUpdate(&ctx->dec, plain, &outl, crypt, len))
534 void crypto_cipher_deinit(struct crypto_cipher *ctx)
536 EVP_CIPHER_CTX_cleanup(&ctx->enc);
537 EVP_CIPHER_CTX_cleanup(&ctx->dec);
542 void * dh5_init(struct wpabuf **priv, struct wpabuf **publ)
545 struct wpabuf *pubkey = NULL, *privkey = NULL;
546 size_t publen, privlen;
556 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
559 dh->p = get_group5_prime();
563 if (DH_generate_key(dh) != 1)
566 publen = BN_num_bytes(dh->pub_key);
567 pubkey = wpabuf_alloc(publen);
570 privlen = BN_num_bytes(dh->priv_key);
571 privkey = wpabuf_alloc(privlen);
575 BN_bn2bin(dh->pub_key, wpabuf_put(pubkey, publen));
576 BN_bn2bin(dh->priv_key, wpabuf_put(privkey, privlen));
583 wpabuf_clear_free(pubkey);
584 wpabuf_clear_free(privkey);
590 void * dh5_init_fixed(const struct wpabuf *priv, const struct wpabuf *publ)
599 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
602 dh->p = get_group5_prime();
606 dh->priv_key = BN_bin2bn(wpabuf_head(priv), wpabuf_len(priv), NULL);
607 if (dh->priv_key == NULL)
610 dh->pub_key = BN_bin2bn(wpabuf_head(publ), wpabuf_len(publ), NULL);
611 if (dh->pub_key == NULL)
614 if (DH_generate_key(dh) != 1)
625 struct wpabuf * dh5_derive_shared(void *ctx, const struct wpabuf *peer_public,
626 const struct wpabuf *own_private)
629 struct wpabuf *res = NULL;
637 pub_key = BN_bin2bn(wpabuf_head(peer_public), wpabuf_len(peer_public),
643 res = wpabuf_alloc(rlen);
647 keylen = DH_compute_key(wpabuf_mhead(res), pub_key, dh);
650 wpabuf_put(res, keylen);
651 BN_clear_free(pub_key);
656 BN_clear_free(pub_key);
657 wpabuf_clear_free(res);
662 void dh5_free(void *ctx)
677 struct crypto_hash * crypto_hash_init(enum crypto_hash_alg alg, const u8 *key,
680 struct crypto_hash *ctx;
684 #ifndef OPENSSL_NO_MD5
685 case CRYPTO_HASH_ALG_HMAC_MD5:
688 #endif /* OPENSSL_NO_MD5 */
689 #ifndef OPENSSL_NO_SHA
690 case CRYPTO_HASH_ALG_HMAC_SHA1:
693 #endif /* OPENSSL_NO_SHA */
694 #ifndef OPENSSL_NO_SHA256
696 case CRYPTO_HASH_ALG_HMAC_SHA256:
699 #endif /* CONFIG_SHA256 */
700 #endif /* OPENSSL_NO_SHA256 */
705 ctx = os_zalloc(sizeof(*ctx));
708 HMAC_CTX_init(&ctx->ctx);
710 #if OPENSSL_VERSION_NUMBER < 0x00909000
711 HMAC_Init_ex(&ctx->ctx, key, key_len, md, NULL);
712 #else /* openssl < 0.9.9 */
713 if (HMAC_Init_ex(&ctx->ctx, key, key_len, md, NULL) != 1) {
714 bin_clear_free(ctx, sizeof(*ctx));
717 #endif /* openssl < 0.9.9 */
723 void crypto_hash_update(struct crypto_hash *ctx, const u8 *data, size_t len)
727 HMAC_Update(&ctx->ctx, data, len);
731 int crypto_hash_finish(struct crypto_hash *ctx, u8 *mac, size_t *len)
739 if (mac == NULL || len == NULL) {
740 bin_clear_free(ctx, sizeof(*ctx));
745 #if OPENSSL_VERSION_NUMBER < 0x00909000
746 HMAC_Final(&ctx->ctx, mac, &mdlen);
748 #else /* openssl < 0.9.9 */
749 res = HMAC_Final(&ctx->ctx, mac, &mdlen);
750 #endif /* openssl < 0.9.9 */
751 HMAC_CTX_cleanup(&ctx->ctx);
752 bin_clear_free(ctx, sizeof(*ctx));
763 static int openssl_hmac_vector(const EVP_MD *type, const u8 *key,
764 size_t key_len, size_t num_elem,
765 const u8 *addr[], const size_t *len, u8 *mac,
773 #if OPENSSL_VERSION_NUMBER < 0x00909000
774 HMAC_Init_ex(&ctx, key, key_len, type, NULL);
775 #else /* openssl < 0.9.9 */
776 if (HMAC_Init_ex(&ctx, key, key_len, type, NULL) != 1)
778 #endif /* openssl < 0.9.9 */
780 for (i = 0; i < num_elem; i++)
781 HMAC_Update(&ctx, addr[i], len[i]);
783 #if OPENSSL_VERSION_NUMBER < 0x00909000
784 HMAC_Final(&ctx, mac, &mdlen);
786 #else /* openssl < 0.9.9 */
787 res = HMAC_Final(&ctx, mac, &mdlen);
788 #endif /* openssl < 0.9.9 */
789 HMAC_CTX_cleanup(&ctx);
791 return res == 1 ? 0 : -1;
797 int hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
798 const u8 *addr[], const size_t *len, u8 *mac)
800 return openssl_hmac_vector(EVP_md5(), key ,key_len, num_elem, addr, len,
805 int hmac_md5(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
808 return hmac_md5_vector(key, key_len, 1, &data, &data_len, mac);
811 #endif /* CONFIG_FIPS */
814 int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len,
815 int iterations, u8 *buf, size_t buflen)
817 if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase), ssid,
818 ssid_len, iterations, buflen, buf) != 1)
824 int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem,
825 const u8 *addr[], const size_t *len, u8 *mac)
827 return openssl_hmac_vector(EVP_sha1(), key, key_len, num_elem, addr,
832 int hmac_sha1(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
835 return hmac_sha1_vector(key, key_len, 1, &data, &data_len, mac);
841 int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
842 const u8 *addr[], const size_t *len, u8 *mac)
844 return openssl_hmac_vector(EVP_sha256(), key, key_len, num_elem, addr,
849 int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
850 size_t data_len, u8 *mac)
852 return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac);
855 #endif /* CONFIG_SHA256 */
860 int hmac_sha384_vector(const u8 *key, size_t key_len, size_t num_elem,
861 const u8 *addr[], const size_t *len, u8 *mac)
863 return openssl_hmac_vector(EVP_sha384(), key, key_len, num_elem, addr,
868 int hmac_sha384(const u8 *key, size_t key_len, const u8 *data,
869 size_t data_len, u8 *mac)
871 return hmac_sha384_vector(key, key_len, 1, &data, &data_len, mac);
874 #endif /* CONFIG_SHA384 */
877 int crypto_get_random(void *buf, size_t len)
879 if (RAND_bytes(buf, len) != 1)
885 #ifdef CONFIG_OPENSSL_CMAC
886 int omac1_aes_vector(const u8 *key, size_t key_len, size_t num_elem,
887 const u8 *addr[], const size_t *len, u8 *mac)
893 ctx = CMAC_CTX_new();
898 if (!CMAC_Init(ctx, key, 32, EVP_aes_256_cbc(), NULL))
900 } else if (key_len == 16) {
901 if (!CMAC_Init(ctx, key, 16, EVP_aes_128_cbc(), NULL))
906 for (i = 0; i < num_elem; i++) {
907 if (!CMAC_Update(ctx, addr[i], len[i]))
910 if (!CMAC_Final(ctx, mac, &outlen) || outlen != 16)
920 int omac1_aes_128_vector(const u8 *key, size_t num_elem,
921 const u8 *addr[], const size_t *len, u8 *mac)
923 return omac1_aes_vector(key, 16, num_elem, addr, len, mac);
927 int omac1_aes_128(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
929 return omac1_aes_128_vector(key, 1, &data, &data_len, mac);
933 int omac1_aes_256(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
935 return omac1_aes_vector(key, 32, 1, &data, &data_len, mac);
937 #endif /* CONFIG_OPENSSL_CMAC */
940 struct crypto_bignum * crypto_bignum_init(void)
942 return (struct crypto_bignum *) BN_new();
946 struct crypto_bignum * crypto_bignum_init_set(const u8 *buf, size_t len)
948 BIGNUM *bn = BN_bin2bn(buf, len, NULL);
949 return (struct crypto_bignum *) bn;
953 void crypto_bignum_deinit(struct crypto_bignum *n, int clear)
956 BN_clear_free((BIGNUM *) n);
958 BN_free((BIGNUM *) n);
962 int crypto_bignum_to_bin(const struct crypto_bignum *a,
963 u8 *buf, size_t buflen, size_t padlen)
965 int num_bytes, offset;
970 num_bytes = BN_num_bytes((const BIGNUM *) a);
971 if ((size_t) num_bytes > buflen)
973 if (padlen > (size_t) num_bytes)
974 offset = padlen - num_bytes;
978 os_memset(buf, 0, offset);
979 BN_bn2bin((const BIGNUM *) a, buf + offset);
981 return num_bytes + offset;
985 int crypto_bignum_add(const struct crypto_bignum *a,
986 const struct crypto_bignum *b,
987 struct crypto_bignum *c)
989 return BN_add((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
994 int crypto_bignum_mod(const struct crypto_bignum *a,
995 const struct crypto_bignum *b,
996 struct crypto_bignum *c)
1001 bnctx = BN_CTX_new();
1004 res = BN_mod((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b,
1008 return res ? 0 : -1;
1012 int crypto_bignum_exptmod(const struct crypto_bignum *a,
1013 const struct crypto_bignum *b,
1014 const struct crypto_bignum *c,
1015 struct crypto_bignum *d)
1020 bnctx = BN_CTX_new();
1023 res = BN_mod_exp((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1024 (const BIGNUM *) c, bnctx);
1027 return res ? 0 : -1;
1031 int crypto_bignum_inverse(const struct crypto_bignum *a,
1032 const struct crypto_bignum *b,
1033 struct crypto_bignum *c)
1038 bnctx = BN_CTX_new();
1041 res = BN_mod_inverse((BIGNUM *) c, (const BIGNUM *) a,
1042 (const BIGNUM *) b, bnctx);
1045 return res ? 0 : -1;
1049 int crypto_bignum_sub(const struct crypto_bignum *a,
1050 const struct crypto_bignum *b,
1051 struct crypto_bignum *c)
1053 return BN_sub((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
1058 int crypto_bignum_div(const struct crypto_bignum *a,
1059 const struct crypto_bignum *b,
1060 struct crypto_bignum *c)
1066 bnctx = BN_CTX_new();
1069 res = BN_div((BIGNUM *) c, NULL, (const BIGNUM *) a,
1070 (const BIGNUM *) b, bnctx);
1073 return res ? 0 : -1;
1077 int crypto_bignum_mulmod(const struct crypto_bignum *a,
1078 const struct crypto_bignum *b,
1079 const struct crypto_bignum *c,
1080 struct crypto_bignum *d)
1086 bnctx = BN_CTX_new();
1089 res = BN_mod_mul((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1090 (const BIGNUM *) c, bnctx);
1093 return res ? 0 : -1;
1097 int crypto_bignum_cmp(const struct crypto_bignum *a,
1098 const struct crypto_bignum *b)
1100 return BN_cmp((const BIGNUM *) a, (const BIGNUM *) b);
1104 int crypto_bignum_bits(const struct crypto_bignum *a)
1106 return BN_num_bits((const BIGNUM *) a);
1110 int crypto_bignum_is_zero(const struct crypto_bignum *a)
1112 return BN_is_zero((const BIGNUM *) a);
1116 int crypto_bignum_is_one(const struct crypto_bignum *a)
1118 return BN_is_one((const BIGNUM *) a);
1122 int crypto_bignum_legendre(const struct crypto_bignum *a,
1123 const struct crypto_bignum *p)
1126 BIGNUM *exp = NULL, *tmp = NULL;
1129 bnctx = BN_CTX_new();
1136 /* exp = (p-1) / 2 */
1137 !BN_sub(exp, (const BIGNUM *) p, BN_value_one()) ||
1138 !BN_rshift1(exp, exp) ||
1139 !BN_mod_exp(tmp, (const BIGNUM *) a, exp, (const BIGNUM *) p,
1143 if (BN_is_word(tmp, 1))
1145 else if (BN_is_zero(tmp))
1169 struct crypto_ec * crypto_ec_init(int group)
1171 struct crypto_ec *e;
1174 /* Map from IANA registry for IKE D-H groups to OpenSSL NID */
1177 nid = NID_X9_62_prime256v1;
1180 nid = NID_secp384r1;
1183 nid = NID_secp521r1;
1186 nid = NID_X9_62_prime192v1;
1189 nid = NID_secp224r1;
1191 #ifdef NID_brainpoolP224r1
1193 nid = NID_brainpoolP224r1;
1195 #endif /* NID_brainpoolP224r1 */
1196 #ifdef NID_brainpoolP256r1
1198 nid = NID_brainpoolP256r1;
1200 #endif /* NID_brainpoolP256r1 */
1201 #ifdef NID_brainpoolP384r1
1203 nid = NID_brainpoolP384r1;
1205 #endif /* NID_brainpoolP384r1 */
1206 #ifdef NID_brainpoolP512r1
1208 nid = NID_brainpoolP512r1;
1210 #endif /* NID_brainpoolP512r1 */
1215 e = os_zalloc(sizeof(*e));
1219 e->bnctx = BN_CTX_new();
1220 e->group = EC_GROUP_new_by_curve_name(nid);
1221 e->prime = BN_new();
1222 e->order = BN_new();
1225 if (e->group == NULL || e->bnctx == NULL || e->prime == NULL ||
1226 e->order == NULL || e->a == NULL || e->b == NULL ||
1227 !EC_GROUP_get_curve_GFp(e->group, e->prime, e->a, e->b, e->bnctx) ||
1228 !EC_GROUP_get_order(e->group, e->order, e->bnctx)) {
1229 crypto_ec_deinit(e);
1237 void crypto_ec_deinit(struct crypto_ec *e)
1241 BN_clear_free(e->b);
1242 BN_clear_free(e->a);
1243 BN_clear_free(e->order);
1244 BN_clear_free(e->prime);
1245 EC_GROUP_free(e->group);
1246 BN_CTX_free(e->bnctx);
1251 struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e)
1255 return (struct crypto_ec_point *) EC_POINT_new(e->group);
1259 size_t crypto_ec_prime_len(struct crypto_ec *e)
1261 return BN_num_bytes(e->prime);
1265 size_t crypto_ec_prime_len_bits(struct crypto_ec *e)
1267 return BN_num_bits(e->prime);
1271 const struct crypto_bignum * crypto_ec_get_prime(struct crypto_ec *e)
1273 return (const struct crypto_bignum *) e->prime;
1277 const struct crypto_bignum * crypto_ec_get_order(struct crypto_ec *e)
1279 return (const struct crypto_bignum *) e->order;
1283 void crypto_ec_point_deinit(struct crypto_ec_point *p, int clear)
1286 EC_POINT_clear_free((EC_POINT *) p);
1288 EC_POINT_free((EC_POINT *) p);
1292 int crypto_ec_point_to_bin(struct crypto_ec *e,
1293 const struct crypto_ec_point *point, u8 *x, u8 *y)
1295 BIGNUM *x_bn, *y_bn;
1297 int len = BN_num_bytes(e->prime);
1303 EC_POINT_get_affine_coordinates_GFp(e->group, (EC_POINT *) point,
1304 x_bn, y_bn, e->bnctx)) {
1306 crypto_bignum_to_bin((struct crypto_bignum *) x_bn,
1310 crypto_bignum_to_bin((struct crypto_bignum *) y_bn,
1316 BN_clear_free(x_bn);
1317 BN_clear_free(y_bn);
1322 struct crypto_ec_point * crypto_ec_point_from_bin(struct crypto_ec *e,
1327 int len = BN_num_bytes(e->prime);
1329 x = BN_bin2bn(val, len, NULL);
1330 y = BN_bin2bn(val + len, len, NULL);
1331 elem = EC_POINT_new(e->group);
1332 if (x == NULL || y == NULL || elem == NULL) {
1335 EC_POINT_clear_free(elem);
1339 if (!EC_POINT_set_affine_coordinates_GFp(e->group, elem, x, y,
1341 EC_POINT_clear_free(elem);
1348 return (struct crypto_ec_point *) elem;
1352 int crypto_ec_point_add(struct crypto_ec *e, const struct crypto_ec_point *a,
1353 const struct crypto_ec_point *b,
1354 struct crypto_ec_point *c)
1356 return EC_POINT_add(e->group, (EC_POINT *) c, (const EC_POINT *) a,
1357 (const EC_POINT *) b, e->bnctx) ? 0 : -1;
1361 int crypto_ec_point_mul(struct crypto_ec *e, const struct crypto_ec_point *p,
1362 const struct crypto_bignum *b,
1363 struct crypto_ec_point *res)
1365 return EC_POINT_mul(e->group, (EC_POINT *) res, NULL,
1366 (const EC_POINT *) p, (const BIGNUM *) b, e->bnctx)
1371 int crypto_ec_point_invert(struct crypto_ec *e, struct crypto_ec_point *p)
1373 return EC_POINT_invert(e->group, (EC_POINT *) p, e->bnctx) ? 0 : -1;
1377 int crypto_ec_point_solve_y_coord(struct crypto_ec *e,
1378 struct crypto_ec_point *p,
1379 const struct crypto_bignum *x, int y_bit)
1381 if (!EC_POINT_set_compressed_coordinates_GFp(e->group, (EC_POINT *) p,
1382 (const BIGNUM *) x, y_bit,
1384 !EC_POINT_is_on_curve(e->group, (EC_POINT *) p, e->bnctx))
1390 struct crypto_bignum *
1391 crypto_ec_point_compute_y_sqr(struct crypto_ec *e,
1392 const struct crypto_bignum *x)
1394 BIGNUM *tmp, *tmp2, *y_sqr = NULL;
1399 /* y^2 = x^3 + ax + b */
1401 BN_mod_sqr(tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1402 BN_mod_mul(tmp, tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1403 BN_mod_mul(tmp2, e->a, (const BIGNUM *) x, e->prime, e->bnctx) &&
1404 BN_mod_add_quick(tmp2, tmp2, tmp, e->prime) &&
1405 BN_mod_add_quick(tmp2, tmp2, e->b, e->prime)) {
1411 BN_clear_free(tmp2);
1413 return (struct crypto_bignum *) y_sqr;
1417 int crypto_ec_point_is_at_infinity(struct crypto_ec *e,
1418 const struct crypto_ec_point *p)
1420 return EC_POINT_is_at_infinity(e->group, (const EC_POINT *) p);
1424 int crypto_ec_point_is_on_curve(struct crypto_ec *e,
1425 const struct crypto_ec_point *p)
1427 return EC_POINT_is_on_curve(e->group, (const EC_POINT *) p,
1432 int crypto_ec_point_cmp(const struct crypto_ec *e,
1433 const struct crypto_ec_point *a,
1434 const struct crypto_ec_point *b)
1436 return EC_POINT_cmp(e->group, (const EC_POINT *) a,
1437 (const EC_POINT *) b, e->bnctx);
1440 #endif /* CONFIG_ECC */