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"
36 #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
37 /* Compatibility wrappers for older versions. */
39 static HMAC_CTX * HMAC_CTX_new(void)
43 ctx = os_zalloc(sizeof(*ctx));
50 static void HMAC_CTX_free(HMAC_CTX *ctx)
54 HMAC_CTX_cleanup(ctx);
55 bin_clear_free(ctx, sizeof(*ctx));
59 static EVP_MD_CTX * EVP_MD_CTX_new(void)
63 ctx = os_zalloc(sizeof(*ctx));
70 static void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
74 EVP_MD_CTX_cleanup(ctx);
75 bin_clear_free(ctx, sizeof(*ctx));
78 #endif /* OpenSSL version < 1.1.0 */
80 static BIGNUM * get_group5_prime(void)
82 #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
83 return BN_get_rfc3526_prime_1536(NULL);
84 #elif !defined(OPENSSL_IS_BORINGSSL)
85 return get_rfc3526_prime_1536(NULL);
87 static const unsigned char RFC3526_PRIME_1536[] = {
88 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xC9,0x0F,0xDA,0xA2,
89 0x21,0x68,0xC2,0x34,0xC4,0xC6,0x62,0x8B,0x80,0xDC,0x1C,0xD1,
90 0x29,0x02,0x4E,0x08,0x8A,0x67,0xCC,0x74,0x02,0x0B,0xBE,0xA6,
91 0x3B,0x13,0x9B,0x22,0x51,0x4A,0x08,0x79,0x8E,0x34,0x04,0xDD,
92 0xEF,0x95,0x19,0xB3,0xCD,0x3A,0x43,0x1B,0x30,0x2B,0x0A,0x6D,
93 0xF2,0x5F,0x14,0x37,0x4F,0xE1,0x35,0x6D,0x6D,0x51,0xC2,0x45,
94 0xE4,0x85,0xB5,0x76,0x62,0x5E,0x7E,0xC6,0xF4,0x4C,0x42,0xE9,
95 0xA6,0x37,0xED,0x6B,0x0B,0xFF,0x5C,0xB6,0xF4,0x06,0xB7,0xED,
96 0xEE,0x38,0x6B,0xFB,0x5A,0x89,0x9F,0xA5,0xAE,0x9F,0x24,0x11,
97 0x7C,0x4B,0x1F,0xE6,0x49,0x28,0x66,0x51,0xEC,0xE4,0x5B,0x3D,
98 0xC2,0x00,0x7C,0xB8,0xA1,0x63,0xBF,0x05,0x98,0xDA,0x48,0x36,
99 0x1C,0x55,0xD3,0x9A,0x69,0x16,0x3F,0xA8,0xFD,0x24,0xCF,0x5F,
100 0x83,0x65,0x5D,0x23,0xDC,0xA3,0xAD,0x96,0x1C,0x62,0xF3,0x56,
101 0x20,0x85,0x52,0xBB,0x9E,0xD5,0x29,0x07,0x70,0x96,0x96,0x6D,
102 0x67,0x0C,0x35,0x4E,0x4A,0xBC,0x98,0x04,0xF1,0x74,0x6C,0x08,
103 0xCA,0x23,0x73,0x27,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
105 return BN_bin2bn(RFC3526_PRIME_1536, sizeof(RFC3526_PRIME_1536), NULL);
109 #ifdef OPENSSL_NO_SHA256
110 #define NO_SHA256_WRAPPER
113 static int openssl_digest_vector(const EVP_MD *type, size_t num_elem,
114 const u8 *addr[], const size_t *len, u8 *mac)
118 unsigned int mac_len;
123 ctx = EVP_MD_CTX_new();
126 if (!EVP_DigestInit_ex(ctx, type, NULL)) {
127 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestInit_ex failed: %s",
128 ERR_error_string(ERR_get_error(), NULL));
129 EVP_MD_CTX_free(ctx);
132 for (i = 0; i < num_elem; i++) {
133 if (!EVP_DigestUpdate(ctx, addr[i], len[i])) {
134 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestUpdate "
136 ERR_error_string(ERR_get_error(), NULL));
137 EVP_MD_CTX_free(ctx);
141 if (!EVP_DigestFinal(ctx, mac, &mac_len)) {
142 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestFinal failed: %s",
143 ERR_error_string(ERR_get_error(), NULL));
144 EVP_MD_CTX_free(ctx);
147 EVP_MD_CTX_free(ctx);
154 int md4_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
156 return openssl_digest_vector(EVP_md4(), num_elem, addr, len, mac);
158 #endif /* CONFIG_FIPS */
161 void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
163 u8 pkey[8], next, tmp;
167 /* Add parity bits to the key */
169 for (i = 0; i < 7; i++) {
171 pkey[i] = (tmp >> i) | next | 1;
172 next = tmp << (7 - i);
176 DES_set_key((DES_cblock *) &pkey, &ks);
177 DES_ecb_encrypt((DES_cblock *) clear, (DES_cblock *) cypher, &ks,
182 #ifndef CONFIG_NO_RC4
183 int rc4_skip(const u8 *key, size_t keylen, size_t skip,
184 u8 *data, size_t data_len)
186 #ifdef OPENSSL_NO_RC4
188 #else /* OPENSSL_NO_RC4 */
192 unsigned char skip_buf[16];
194 ctx = EVP_CIPHER_CTX_new();
196 !EVP_CIPHER_CTX_set_padding(ctx, 0) ||
197 !EVP_CipherInit_ex(ctx, EVP_rc4(), NULL, NULL, NULL, 1) ||
198 !EVP_CIPHER_CTX_set_key_length(ctx, keylen) ||
199 !EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, 1))
202 while (skip >= sizeof(skip_buf)) {
204 if (len > sizeof(skip_buf))
205 len = sizeof(skip_buf);
206 if (!EVP_CipherUpdate(ctx, skip_buf, &outl, skip_buf, len))
211 if (EVP_CipherUpdate(ctx, data, &outl, data, data_len))
216 EVP_CIPHER_CTX_free(ctx);
218 #endif /* OPENSSL_NO_RC4 */
220 #endif /* CONFIG_NO_RC4 */
224 int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
226 return openssl_digest_vector(EVP_md5(), num_elem, addr, len, mac);
228 #endif /* CONFIG_FIPS */
231 int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
233 return openssl_digest_vector(EVP_sha1(), num_elem, addr, len, mac);
237 #ifndef NO_SHA256_WRAPPER
238 int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
241 return openssl_digest_vector(EVP_sha256(), num_elem, addr, len, mac);
243 #endif /* NO_SHA256_WRAPPER */
246 static const EVP_CIPHER * aes_get_evp_cipher(size_t keylen)
250 return EVP_aes_128_ecb();
251 #ifndef OPENSSL_IS_BORINGSSL
253 return EVP_aes_192_ecb();
254 #endif /* OPENSSL_IS_BORINGSSL */
256 return EVP_aes_256_ecb();
263 void * aes_encrypt_init(const u8 *key, size_t len)
266 const EVP_CIPHER *type;
271 type = aes_get_evp_cipher(len);
275 ctx = EVP_CIPHER_CTX_new();
278 if (EVP_EncryptInit_ex(ctx, type, NULL, key, NULL) != 1) {
282 EVP_CIPHER_CTX_set_padding(ctx, 0);
287 void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
289 EVP_CIPHER_CTX *c = ctx;
291 if (EVP_EncryptUpdate(c, crypt, &clen, plain, 16) != 1) {
292 wpa_printf(MSG_ERROR, "OpenSSL: EVP_EncryptUpdate failed: %s",
293 ERR_error_string(ERR_get_error(), NULL));
298 void aes_encrypt_deinit(void *ctx)
300 EVP_CIPHER_CTX *c = ctx;
302 int len = sizeof(buf);
303 if (EVP_EncryptFinal_ex(c, buf, &len) != 1) {
304 wpa_printf(MSG_ERROR, "OpenSSL: EVP_EncryptFinal_ex failed: "
305 "%s", ERR_error_string(ERR_get_error(), NULL));
308 wpa_printf(MSG_ERROR, "OpenSSL: Unexpected padding length %d "
309 "in AES encrypt", len);
311 EVP_CIPHER_CTX_free(c);
315 void * aes_decrypt_init(const u8 *key, size_t len)
318 const EVP_CIPHER *type;
323 type = aes_get_evp_cipher(len);
327 ctx = EVP_CIPHER_CTX_new();
330 if (EVP_DecryptInit_ex(ctx, type, NULL, key, NULL) != 1) {
331 EVP_CIPHER_CTX_free(ctx);
334 EVP_CIPHER_CTX_set_padding(ctx, 0);
339 void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
341 EVP_CIPHER_CTX *c = ctx;
343 if (EVP_DecryptUpdate(c, plain, &plen, crypt, 16) != 1) {
344 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DecryptUpdate failed: %s",
345 ERR_error_string(ERR_get_error(), NULL));
350 void aes_decrypt_deinit(void *ctx)
352 EVP_CIPHER_CTX *c = ctx;
354 int len = sizeof(buf);
355 if (EVP_DecryptFinal_ex(c, buf, &len) != 1) {
356 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DecryptFinal_ex failed: "
357 "%s", ERR_error_string(ERR_get_error(), NULL));
360 wpa_printf(MSG_ERROR, "OpenSSL: Unexpected padding length %d "
361 "in AES decrypt", len);
363 EVP_CIPHER_CTX_free(c);
368 #ifndef CONFIG_OPENSSL_INTERNAL_AES_WRAP
370 int aes_wrap(const u8 *kek, size_t kek_len, int n, const u8 *plain, u8 *cipher)
375 if (AES_set_encrypt_key(kek, kek_len << 3, &actx))
377 res = AES_wrap_key(&actx, NULL, cipher, plain, n * 8);
378 OPENSSL_cleanse(&actx, sizeof(actx));
379 return res <= 0 ? -1 : 0;
383 int aes_unwrap(const u8 *kek, size_t kek_len, int n, const u8 *cipher,
389 if (AES_set_decrypt_key(kek, kek_len << 3, &actx))
391 res = AES_unwrap_key(&actx, NULL, plain, cipher, (n + 1) * 8);
392 OPENSSL_cleanse(&actx, sizeof(actx));
393 return res <= 0 ? -1 : 0;
396 #endif /* CONFIG_OPENSSL_INTERNAL_AES_WRAP */
397 #endif /* CONFIG_FIPS */
400 int aes_128_cbc_encrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
410 ctx = EVP_CIPHER_CTX_new();
415 if (EVP_EncryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv) == 1 &&
416 EVP_CIPHER_CTX_set_padding(ctx, 0) == 1 &&
417 EVP_EncryptUpdate(ctx, data, &clen, data, data_len) == 1 &&
418 clen == (int) data_len &&
419 EVP_EncryptFinal_ex(ctx, buf, &len) == 1 && len == 0)
421 EVP_CIPHER_CTX_free(ctx);
427 int aes_128_cbc_decrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
437 ctx = EVP_CIPHER_CTX_new();
442 if (EVP_DecryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv) == 1 &&
443 EVP_CIPHER_CTX_set_padding(ctx, 0) == 1 &&
444 EVP_DecryptUpdate(ctx, data, &plen, data, data_len) == 1 &&
445 plen == (int) data_len &&
446 EVP_DecryptFinal_ex(ctx, buf, &len) == 1 && len == 0)
448 EVP_CIPHER_CTX_free(ctx);
455 int crypto_mod_exp(const u8 *base, size_t base_len,
456 const u8 *power, size_t power_len,
457 const u8 *modulus, size_t modulus_len,
458 u8 *result, size_t *result_len)
460 BIGNUM *bn_base, *bn_exp, *bn_modulus, *bn_result;
468 bn_base = BN_bin2bn(base, base_len, NULL);
469 bn_exp = BN_bin2bn(power, power_len, NULL);
470 bn_modulus = BN_bin2bn(modulus, modulus_len, NULL);
471 bn_result = BN_new();
473 if (bn_base == NULL || bn_exp == NULL || bn_modulus == NULL ||
477 if (BN_mod_exp(bn_result, bn_base, bn_exp, bn_modulus, ctx) != 1)
480 *result_len = BN_bn2bin(bn_result, result);
484 BN_clear_free(bn_base);
485 BN_clear_free(bn_exp);
486 BN_clear_free(bn_modulus);
487 BN_clear_free(bn_result);
493 struct crypto_cipher {
499 struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
500 const u8 *iv, const u8 *key,
503 struct crypto_cipher *ctx;
504 const EVP_CIPHER *cipher;
506 ctx = os_zalloc(sizeof(*ctx));
511 #ifndef CONFIG_NO_RC4
512 #ifndef OPENSSL_NO_RC4
513 case CRYPTO_CIPHER_ALG_RC4:
516 #endif /* OPENSSL_NO_RC4 */
517 #endif /* CONFIG_NO_RC4 */
518 #ifndef OPENSSL_NO_AES
519 case CRYPTO_CIPHER_ALG_AES:
522 cipher = EVP_aes_128_cbc();
524 #ifndef OPENSSL_IS_BORINGSSL
526 cipher = EVP_aes_192_cbc();
528 #endif /* OPENSSL_IS_BORINGSSL */
530 cipher = EVP_aes_256_cbc();
537 #endif /* OPENSSL_NO_AES */
538 #ifndef OPENSSL_NO_DES
539 case CRYPTO_CIPHER_ALG_3DES:
540 cipher = EVP_des_ede3_cbc();
542 case CRYPTO_CIPHER_ALG_DES:
543 cipher = EVP_des_cbc();
545 #endif /* OPENSSL_NO_DES */
546 #ifndef OPENSSL_NO_RC2
547 case CRYPTO_CIPHER_ALG_RC2:
548 cipher = EVP_rc2_ecb();
550 #endif /* OPENSSL_NO_RC2 */
556 if (!(ctx->enc = EVP_CIPHER_CTX_new()) ||
557 !EVP_CIPHER_CTX_set_padding(ctx->enc, 0) ||
558 !EVP_EncryptInit_ex(ctx->enc, cipher, NULL, NULL, NULL) ||
559 !EVP_CIPHER_CTX_set_key_length(ctx->enc, key_len) ||
560 !EVP_EncryptInit_ex(ctx->enc, NULL, NULL, key, iv)) {
562 EVP_CIPHER_CTX_free(ctx->enc);
567 if (!(ctx->dec = EVP_CIPHER_CTX_new()) ||
568 !EVP_CIPHER_CTX_set_padding(ctx->dec, 0) ||
569 !EVP_DecryptInit_ex(ctx->dec, cipher, NULL, NULL, NULL) ||
570 !EVP_CIPHER_CTX_set_key_length(ctx->dec, key_len) ||
571 !EVP_DecryptInit_ex(ctx->dec, NULL, NULL, key, iv)) {
572 EVP_CIPHER_CTX_free(ctx->enc);
574 EVP_CIPHER_CTX_free(ctx->dec);
583 int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
584 u8 *crypt, size_t len)
587 if (!EVP_EncryptUpdate(ctx->enc, crypt, &outl, plain, len))
593 int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
594 u8 *plain, size_t len)
598 if (!EVP_DecryptUpdate(ctx->dec, plain, &outl, crypt, len))
604 void crypto_cipher_deinit(struct crypto_cipher *ctx)
606 EVP_CIPHER_CTX_free(ctx->enc);
607 EVP_CIPHER_CTX_free(ctx->dec);
612 void * dh5_init(struct wpabuf **priv, struct wpabuf **publ)
614 #if OPENSSL_VERSION_NUMBER < 0x10100000L
616 struct wpabuf *pubkey = NULL, *privkey = NULL;
617 size_t publen, privlen;
628 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
631 dh->p = get_group5_prime();
635 if (DH_generate_key(dh) != 1)
638 publen = BN_num_bytes(dh->pub_key);
639 pubkey = wpabuf_alloc(publen);
642 privlen = BN_num_bytes(dh->priv_key);
643 privkey = wpabuf_alloc(privlen);
647 BN_bn2bin(dh->pub_key, wpabuf_put(pubkey, publen));
648 BN_bn2bin(dh->priv_key, wpabuf_put(privkey, privlen));
655 wpabuf_clear_free(pubkey);
656 wpabuf_clear_free(privkey);
661 struct wpabuf *pubkey = NULL, *privkey = NULL;
662 size_t publen, privlen;
663 BIGNUM *p = NULL, *g;
664 const BIGNUM *priv_key = NULL, *pub_key = NULL;
675 p = get_group5_prime();
676 if (!g || BN_set_word(g, 2) != 1 || !p ||
677 DH_set0_pqg(dh, p, NULL, g) != 1)
682 if (DH_generate_key(dh) != 1)
685 DH_get0_key(dh, &pub_key, &priv_key);
686 publen = BN_num_bytes(pub_key);
687 pubkey = wpabuf_alloc(publen);
690 privlen = BN_num_bytes(priv_key);
691 privkey = wpabuf_alloc(privlen);
695 BN_bn2bin(pub_key, wpabuf_put(pubkey, publen));
696 BN_bn2bin(priv_key, wpabuf_put(privkey, privlen));
705 wpabuf_clear_free(pubkey);
706 wpabuf_clear_free(privkey);
713 void * dh5_init_fixed(const struct wpabuf *priv, const struct wpabuf *publ)
715 #if OPENSSL_VERSION_NUMBER < 0x10100000L
723 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
726 dh->p = get_group5_prime();
730 dh->priv_key = BN_bin2bn(wpabuf_head(priv), wpabuf_len(priv), NULL);
731 if (dh->priv_key == NULL)
734 dh->pub_key = BN_bin2bn(wpabuf_head(publ), wpabuf_len(publ), NULL);
735 if (dh->pub_key == NULL)
738 if (DH_generate_key(dh) != 1)
748 BIGNUM *p = NULL, *g, *priv_key = NULL, *pub_key = NULL;
755 p = get_group5_prime();
756 if (!g || BN_set_word(g, 2) != 1 || !p ||
757 DH_set0_pqg(dh, p, NULL, g) != 1)
762 priv_key = BN_bin2bn(wpabuf_head(priv), wpabuf_len(priv), NULL);
763 pub_key = BN_bin2bn(wpabuf_head(publ), wpabuf_len(publ), NULL);
764 if (!priv_key || !pub_key || DH_set0_key(dh, pub_key, priv_key) != 1)
769 if (DH_generate_key(dh) != 1)
778 BN_clear_free(priv_key);
785 struct wpabuf * dh5_derive_shared(void *ctx, const struct wpabuf *peer_public,
786 const struct wpabuf *own_private)
789 struct wpabuf *res = NULL;
797 pub_key = BN_bin2bn(wpabuf_head(peer_public), wpabuf_len(peer_public),
803 res = wpabuf_alloc(rlen);
807 keylen = DH_compute_key(wpabuf_mhead(res), pub_key, dh);
810 wpabuf_put(res, keylen);
811 BN_clear_free(pub_key);
816 BN_clear_free(pub_key);
817 wpabuf_clear_free(res);
822 void dh5_free(void *ctx)
837 struct crypto_hash * crypto_hash_init(enum crypto_hash_alg alg, const u8 *key,
840 struct crypto_hash *ctx;
844 #ifndef OPENSSL_NO_MD5
845 case CRYPTO_HASH_ALG_HMAC_MD5:
848 #endif /* OPENSSL_NO_MD5 */
849 #ifndef OPENSSL_NO_SHA
850 case CRYPTO_HASH_ALG_HMAC_SHA1:
853 #endif /* OPENSSL_NO_SHA */
854 #ifndef OPENSSL_NO_SHA256
856 case CRYPTO_HASH_ALG_HMAC_SHA256:
859 #endif /* CONFIG_SHA256 */
860 #endif /* OPENSSL_NO_SHA256 */
865 ctx = os_zalloc(sizeof(*ctx));
868 ctx->ctx = HMAC_CTX_new();
874 if (HMAC_Init_ex(ctx->ctx, key, key_len, md, NULL) != 1) {
875 HMAC_CTX_free(ctx->ctx);
876 bin_clear_free(ctx, sizeof(*ctx));
884 void crypto_hash_update(struct crypto_hash *ctx, const u8 *data, size_t len)
888 HMAC_Update(ctx->ctx, data, len);
892 int crypto_hash_finish(struct crypto_hash *ctx, u8 *mac, size_t *len)
900 if (mac == NULL || len == NULL) {
901 HMAC_CTX_free(ctx->ctx);
902 bin_clear_free(ctx, sizeof(*ctx));
907 res = HMAC_Final(ctx->ctx, mac, &mdlen);
908 HMAC_CTX_free(ctx->ctx);
909 bin_clear_free(ctx, sizeof(*ctx));
920 static int openssl_hmac_vector(const EVP_MD *type, const u8 *key,
921 size_t key_len, size_t num_elem,
922 const u8 *addr[], const size_t *len, u8 *mac,
932 ctx = HMAC_CTX_new();
935 res = HMAC_Init_ex(ctx, key, key_len, type, NULL);
939 for (i = 0; i < num_elem; i++)
940 HMAC_Update(ctx, addr[i], len[i]);
942 res = HMAC_Final(ctx, mac, &mdlen);
946 return res == 1 ? 0 : -1;
952 int hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
953 const u8 *addr[], const size_t *len, u8 *mac)
955 return openssl_hmac_vector(EVP_md5(), key ,key_len, num_elem, addr, len,
960 int hmac_md5(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
963 return hmac_md5_vector(key, key_len, 1, &data, &data_len, mac);
966 #endif /* CONFIG_FIPS */
969 int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len,
970 int iterations, u8 *buf, size_t buflen)
972 if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase), ssid,
973 ssid_len, iterations, buflen, buf) != 1)
979 int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem,
980 const u8 *addr[], const size_t *len, u8 *mac)
982 return openssl_hmac_vector(EVP_sha1(), key, key_len, num_elem, addr,
987 int hmac_sha1(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
990 return hmac_sha1_vector(key, key_len, 1, &data, &data_len, mac);
996 int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
997 const u8 *addr[], const size_t *len, u8 *mac)
999 return openssl_hmac_vector(EVP_sha256(), key, key_len, num_elem, addr,
1004 int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
1005 size_t data_len, u8 *mac)
1007 return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac);
1010 #endif /* CONFIG_SHA256 */
1013 #ifdef CONFIG_SHA384
1015 int hmac_sha384_vector(const u8 *key, size_t key_len, size_t num_elem,
1016 const u8 *addr[], const size_t *len, u8 *mac)
1018 return openssl_hmac_vector(EVP_sha384(), key, key_len, num_elem, addr,
1023 int hmac_sha384(const u8 *key, size_t key_len, const u8 *data,
1024 size_t data_len, u8 *mac)
1026 return hmac_sha384_vector(key, key_len, 1, &data, &data_len, mac);
1029 #endif /* CONFIG_SHA384 */
1032 int crypto_get_random(void *buf, size_t len)
1034 if (RAND_bytes(buf, len) != 1)
1040 #ifdef CONFIG_OPENSSL_CMAC
1041 int omac1_aes_vector(const u8 *key, size_t key_len, size_t num_elem,
1042 const u8 *addr[], const size_t *len, u8 *mac)
1051 ctx = CMAC_CTX_new();
1055 if (key_len == 32) {
1056 if (!CMAC_Init(ctx, key, 32, EVP_aes_256_cbc(), NULL))
1058 } else if (key_len == 16) {
1059 if (!CMAC_Init(ctx, key, 16, EVP_aes_128_cbc(), NULL))
1064 for (i = 0; i < num_elem; i++) {
1065 if (!CMAC_Update(ctx, addr[i], len[i]))
1068 if (!CMAC_Final(ctx, mac, &outlen) || outlen != 16)
1078 int omac1_aes_128_vector(const u8 *key, size_t num_elem,
1079 const u8 *addr[], const size_t *len, u8 *mac)
1081 return omac1_aes_vector(key, 16, num_elem, addr, len, mac);
1085 int omac1_aes_128(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
1087 return omac1_aes_128_vector(key, 1, &data, &data_len, mac);
1091 int omac1_aes_256(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
1093 return omac1_aes_vector(key, 32, 1, &data, &data_len, mac);
1095 #endif /* CONFIG_OPENSSL_CMAC */
1098 struct crypto_bignum * crypto_bignum_init(void)
1102 return (struct crypto_bignum *) BN_new();
1106 struct crypto_bignum * crypto_bignum_init_set(const u8 *buf, size_t len)
1113 bn = BN_bin2bn(buf, len, NULL);
1114 return (struct crypto_bignum *) bn;
1118 void crypto_bignum_deinit(struct crypto_bignum *n, int clear)
1121 BN_clear_free((BIGNUM *) n);
1123 BN_free((BIGNUM *) n);
1127 int crypto_bignum_to_bin(const struct crypto_bignum *a,
1128 u8 *buf, size_t buflen, size_t padlen)
1130 int num_bytes, offset;
1135 if (padlen > buflen)
1138 num_bytes = BN_num_bytes((const BIGNUM *) a);
1139 if ((size_t) num_bytes > buflen)
1141 if (padlen > (size_t) num_bytes)
1142 offset = padlen - num_bytes;
1146 os_memset(buf, 0, offset);
1147 BN_bn2bin((const BIGNUM *) a, buf + offset);
1149 return num_bytes + offset;
1153 int crypto_bignum_add(const struct crypto_bignum *a,
1154 const struct crypto_bignum *b,
1155 struct crypto_bignum *c)
1157 return BN_add((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
1162 int crypto_bignum_mod(const struct crypto_bignum *a,
1163 const struct crypto_bignum *b,
1164 struct crypto_bignum *c)
1169 bnctx = BN_CTX_new();
1172 res = BN_mod((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b,
1176 return res ? 0 : -1;
1180 int crypto_bignum_exptmod(const struct crypto_bignum *a,
1181 const struct crypto_bignum *b,
1182 const struct crypto_bignum *c,
1183 struct crypto_bignum *d)
1191 bnctx = BN_CTX_new();
1194 res = BN_mod_exp((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1195 (const BIGNUM *) c, bnctx);
1198 return res ? 0 : -1;
1202 int crypto_bignum_inverse(const struct crypto_bignum *a,
1203 const struct crypto_bignum *b,
1204 struct crypto_bignum *c)
1211 bnctx = BN_CTX_new();
1214 res = BN_mod_inverse((BIGNUM *) c, (const BIGNUM *) a,
1215 (const BIGNUM *) b, bnctx);
1218 return res ? 0 : -1;
1222 int crypto_bignum_sub(const struct crypto_bignum *a,
1223 const struct crypto_bignum *b,
1224 struct crypto_bignum *c)
1228 return BN_sub((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
1233 int crypto_bignum_div(const struct crypto_bignum *a,
1234 const struct crypto_bignum *b,
1235 struct crypto_bignum *c)
1244 bnctx = BN_CTX_new();
1247 res = BN_div((BIGNUM *) c, NULL, (const BIGNUM *) a,
1248 (const BIGNUM *) b, bnctx);
1251 return res ? 0 : -1;
1255 int crypto_bignum_mulmod(const struct crypto_bignum *a,
1256 const struct crypto_bignum *b,
1257 const struct crypto_bignum *c,
1258 struct crypto_bignum *d)
1267 bnctx = BN_CTX_new();
1270 res = BN_mod_mul((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1271 (const BIGNUM *) c, bnctx);
1274 return res ? 0 : -1;
1278 int crypto_bignum_cmp(const struct crypto_bignum *a,
1279 const struct crypto_bignum *b)
1281 return BN_cmp((const BIGNUM *) a, (const BIGNUM *) b);
1285 int crypto_bignum_bits(const struct crypto_bignum *a)
1287 return BN_num_bits((const BIGNUM *) a);
1291 int crypto_bignum_is_zero(const struct crypto_bignum *a)
1293 return BN_is_zero((const BIGNUM *) a);
1297 int crypto_bignum_is_one(const struct crypto_bignum *a)
1299 return BN_is_one((const BIGNUM *) a);
1303 int crypto_bignum_legendre(const struct crypto_bignum *a,
1304 const struct crypto_bignum *p)
1307 BIGNUM *exp = NULL, *tmp = NULL;
1313 bnctx = BN_CTX_new();
1320 /* exp = (p-1) / 2 */
1321 !BN_sub(exp, (const BIGNUM *) p, BN_value_one()) ||
1322 !BN_rshift1(exp, exp) ||
1323 !BN_mod_exp(tmp, (const BIGNUM *) a, exp, (const BIGNUM *) p,
1327 if (BN_is_word(tmp, 1))
1329 else if (BN_is_zero(tmp))
1353 struct crypto_ec * crypto_ec_init(int group)
1355 struct crypto_ec *e;
1358 /* Map from IANA registry for IKE D-H groups to OpenSSL NID */
1361 nid = NID_X9_62_prime256v1;
1364 nid = NID_secp384r1;
1367 nid = NID_secp521r1;
1370 nid = NID_X9_62_prime192v1;
1373 nid = NID_secp224r1;
1375 #ifdef NID_brainpoolP224r1
1377 nid = NID_brainpoolP224r1;
1379 #endif /* NID_brainpoolP224r1 */
1380 #ifdef NID_brainpoolP256r1
1382 nid = NID_brainpoolP256r1;
1384 #endif /* NID_brainpoolP256r1 */
1385 #ifdef NID_brainpoolP384r1
1387 nid = NID_brainpoolP384r1;
1389 #endif /* NID_brainpoolP384r1 */
1390 #ifdef NID_brainpoolP512r1
1392 nid = NID_brainpoolP512r1;
1394 #endif /* NID_brainpoolP512r1 */
1399 e = os_zalloc(sizeof(*e));
1403 e->bnctx = BN_CTX_new();
1404 e->group = EC_GROUP_new_by_curve_name(nid);
1405 e->prime = BN_new();
1406 e->order = BN_new();
1409 if (e->group == NULL || e->bnctx == NULL || e->prime == NULL ||
1410 e->order == NULL || e->a == NULL || e->b == NULL ||
1411 !EC_GROUP_get_curve_GFp(e->group, e->prime, e->a, e->b, e->bnctx) ||
1412 !EC_GROUP_get_order(e->group, e->order, e->bnctx)) {
1413 crypto_ec_deinit(e);
1421 void crypto_ec_deinit(struct crypto_ec *e)
1425 BN_clear_free(e->b);
1426 BN_clear_free(e->a);
1427 BN_clear_free(e->order);
1428 BN_clear_free(e->prime);
1429 EC_GROUP_free(e->group);
1430 BN_CTX_free(e->bnctx);
1435 struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e)
1441 return (struct crypto_ec_point *) EC_POINT_new(e->group);
1445 size_t crypto_ec_prime_len(struct crypto_ec *e)
1447 return BN_num_bytes(e->prime);
1451 size_t crypto_ec_prime_len_bits(struct crypto_ec *e)
1453 return BN_num_bits(e->prime);
1457 const struct crypto_bignum * crypto_ec_get_prime(struct crypto_ec *e)
1459 return (const struct crypto_bignum *) e->prime;
1463 const struct crypto_bignum * crypto_ec_get_order(struct crypto_ec *e)
1465 return (const struct crypto_bignum *) e->order;
1469 void crypto_ec_point_deinit(struct crypto_ec_point *p, int clear)
1472 EC_POINT_clear_free((EC_POINT *) p);
1474 EC_POINT_free((EC_POINT *) p);
1478 int crypto_ec_point_to_bin(struct crypto_ec *e,
1479 const struct crypto_ec_point *point, u8 *x, u8 *y)
1481 BIGNUM *x_bn, *y_bn;
1483 int len = BN_num_bytes(e->prime);
1492 EC_POINT_get_affine_coordinates_GFp(e->group, (EC_POINT *) point,
1493 x_bn, y_bn, e->bnctx)) {
1495 crypto_bignum_to_bin((struct crypto_bignum *) x_bn,
1499 crypto_bignum_to_bin((struct crypto_bignum *) y_bn,
1505 BN_clear_free(x_bn);
1506 BN_clear_free(y_bn);
1511 struct crypto_ec_point * crypto_ec_point_from_bin(struct crypto_ec *e,
1516 int len = BN_num_bytes(e->prime);
1521 x = BN_bin2bn(val, len, NULL);
1522 y = BN_bin2bn(val + len, len, NULL);
1523 elem = EC_POINT_new(e->group);
1524 if (x == NULL || y == NULL || elem == NULL) {
1527 EC_POINT_clear_free(elem);
1531 if (!EC_POINT_set_affine_coordinates_GFp(e->group, elem, x, y,
1533 EC_POINT_clear_free(elem);
1540 return (struct crypto_ec_point *) elem;
1544 int crypto_ec_point_add(struct crypto_ec *e, const struct crypto_ec_point *a,
1545 const struct crypto_ec_point *b,
1546 struct crypto_ec_point *c)
1550 return EC_POINT_add(e->group, (EC_POINT *) c, (const EC_POINT *) a,
1551 (const EC_POINT *) b, e->bnctx) ? 0 : -1;
1555 int crypto_ec_point_mul(struct crypto_ec *e, const struct crypto_ec_point *p,
1556 const struct crypto_bignum *b,
1557 struct crypto_ec_point *res)
1561 return EC_POINT_mul(e->group, (EC_POINT *) res, NULL,
1562 (const EC_POINT *) p, (const BIGNUM *) b, e->bnctx)
1567 int crypto_ec_point_invert(struct crypto_ec *e, struct crypto_ec_point *p)
1571 return EC_POINT_invert(e->group, (EC_POINT *) p, e->bnctx) ? 0 : -1;
1575 int crypto_ec_point_solve_y_coord(struct crypto_ec *e,
1576 struct crypto_ec_point *p,
1577 const struct crypto_bignum *x, int y_bit)
1581 if (!EC_POINT_set_compressed_coordinates_GFp(e->group, (EC_POINT *) p,
1582 (const BIGNUM *) x, y_bit,
1584 !EC_POINT_is_on_curve(e->group, (EC_POINT *) p, e->bnctx))
1590 struct crypto_bignum *
1591 crypto_ec_point_compute_y_sqr(struct crypto_ec *e,
1592 const struct crypto_bignum *x)
1594 BIGNUM *tmp, *tmp2, *y_sqr = NULL;
1602 /* y^2 = x^3 + ax + b */
1604 BN_mod_sqr(tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1605 BN_mod_mul(tmp, tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1606 BN_mod_mul(tmp2, e->a, (const BIGNUM *) x, e->prime, e->bnctx) &&
1607 BN_mod_add_quick(tmp2, tmp2, tmp, e->prime) &&
1608 BN_mod_add_quick(tmp2, tmp2, e->b, e->prime)) {
1614 BN_clear_free(tmp2);
1616 return (struct crypto_bignum *) y_sqr;
1620 int crypto_ec_point_is_at_infinity(struct crypto_ec *e,
1621 const struct crypto_ec_point *p)
1623 return EC_POINT_is_at_infinity(e->group, (const EC_POINT *) p);
1627 int crypto_ec_point_is_on_curve(struct crypto_ec *e,
1628 const struct crypto_ec_point *p)
1630 return EC_POINT_is_on_curve(e->group, (const EC_POINT *) p,
1635 int crypto_ec_point_cmp(const struct crypto_ec *e,
1636 const struct crypto_ec_point *a,
1637 const struct crypto_ec_point *b)
1639 return EC_POINT_cmp(e->group, (const EC_POINT *) a,
1640 (const EC_POINT *) b, e->bnctx);
1643 #endif /* CONFIG_ECC */