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 #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
35 /* Compatibility wrappers for older versions. */
37 static HMAC_CTX * HMAC_CTX_new(void)
41 ctx = os_zalloc(sizeof(*ctx));
48 static void HMAC_CTX_free(HMAC_CTX *ctx)
50 HMAC_CTX_cleanup(ctx);
51 bin_clear_free(ctx, sizeof(*ctx));
55 static EVP_MD_CTX * EVP_MD_CTX_new(void)
59 ctx = os_zalloc(sizeof(*ctx));
66 static void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
68 bin_clear_free(ctx, sizeof(*ctx));
71 #endif /* OpenSSL version < 1.1.0 */
73 static BIGNUM * get_group5_prime(void)
75 #ifdef OPENSSL_IS_BORINGSSL
76 static const unsigned char RFC3526_PRIME_1536[] = {
77 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xC9,0x0F,0xDA,0xA2,
78 0x21,0x68,0xC2,0x34,0xC4,0xC6,0x62,0x8B,0x80,0xDC,0x1C,0xD1,
79 0x29,0x02,0x4E,0x08,0x8A,0x67,0xCC,0x74,0x02,0x0B,0xBE,0xA6,
80 0x3B,0x13,0x9B,0x22,0x51,0x4A,0x08,0x79,0x8E,0x34,0x04,0xDD,
81 0xEF,0x95,0x19,0xB3,0xCD,0x3A,0x43,0x1B,0x30,0x2B,0x0A,0x6D,
82 0xF2,0x5F,0x14,0x37,0x4F,0xE1,0x35,0x6D,0x6D,0x51,0xC2,0x45,
83 0xE4,0x85,0xB5,0x76,0x62,0x5E,0x7E,0xC6,0xF4,0x4C,0x42,0xE9,
84 0xA6,0x37,0xED,0x6B,0x0B,0xFF,0x5C,0xB6,0xF4,0x06,0xB7,0xED,
85 0xEE,0x38,0x6B,0xFB,0x5A,0x89,0x9F,0xA5,0xAE,0x9F,0x24,0x11,
86 0x7C,0x4B,0x1F,0xE6,0x49,0x28,0x66,0x51,0xEC,0xE4,0x5B,0x3D,
87 0xC2,0x00,0x7C,0xB8,0xA1,0x63,0xBF,0x05,0x98,0xDA,0x48,0x36,
88 0x1C,0x55,0xD3,0x9A,0x69,0x16,0x3F,0xA8,0xFD,0x24,0xCF,0x5F,
89 0x83,0x65,0x5D,0x23,0xDC,0xA3,0xAD,0x96,0x1C,0x62,0xF3,0x56,
90 0x20,0x85,0x52,0xBB,0x9E,0xD5,0x29,0x07,0x70,0x96,0x96,0x6D,
91 0x67,0x0C,0x35,0x4E,0x4A,0xBC,0x98,0x04,0xF1,0x74,0x6C,0x08,
92 0xCA,0x23,0x73,0x27,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
94 return BN_bin2bn(RFC3526_PRIME_1536, sizeof(RFC3526_PRIME_1536), NULL);
95 #else /* OPENSSL_IS_BORINGSSL */
96 return get_rfc3526_prime_1536(NULL);
97 #endif /* OPENSSL_IS_BORINGSSL */
100 #ifdef OPENSSL_NO_SHA256
101 #define NO_SHA256_WRAPPER
104 static int openssl_digest_vector(const EVP_MD *type, size_t num_elem,
105 const u8 *addr[], const size_t *len, u8 *mac)
109 unsigned int mac_len;
114 ctx = EVP_MD_CTX_new();
117 if (!EVP_DigestInit_ex(ctx, type, NULL)) {
118 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestInit_ex failed: %s",
119 ERR_error_string(ERR_get_error(), NULL));
120 EVP_MD_CTX_free(ctx);
123 for (i = 0; i < num_elem; i++) {
124 if (!EVP_DigestUpdate(ctx, addr[i], len[i])) {
125 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestUpdate "
127 ERR_error_string(ERR_get_error(), NULL));
128 EVP_MD_CTX_free(ctx);
132 if (!EVP_DigestFinal(ctx, mac, &mac_len)) {
133 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestFinal failed: %s",
134 ERR_error_string(ERR_get_error(), NULL));
135 EVP_MD_CTX_free(ctx);
138 EVP_MD_CTX_free(ctx);
145 int md4_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
147 return openssl_digest_vector(EVP_md4(), num_elem, addr, len, mac);
149 #endif /* CONFIG_FIPS */
152 void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
154 u8 pkey[8], next, tmp;
158 /* Add parity bits to the key */
160 for (i = 0; i < 7; i++) {
162 pkey[i] = (tmp >> i) | next | 1;
163 next = tmp << (7 - i);
167 DES_set_key((DES_cblock *) &pkey, &ks);
168 DES_ecb_encrypt((DES_cblock *) clear, (DES_cblock *) cypher, &ks,
173 #ifndef CONFIG_NO_RC4
174 int rc4_skip(const u8 *key, size_t keylen, size_t skip,
175 u8 *data, size_t data_len)
177 #ifdef OPENSSL_NO_RC4
179 #else /* OPENSSL_NO_RC4 */
183 unsigned char skip_buf[16];
185 ctx = EVP_CIPHER_CTX_new();
187 !EVP_CIPHER_CTX_set_padding(ctx, 0) ||
188 !EVP_CipherInit_ex(ctx, EVP_rc4(), NULL, NULL, NULL, 1) ||
189 !EVP_CIPHER_CTX_set_key_length(ctx, keylen) ||
190 !EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, 1))
193 while (skip >= sizeof(skip_buf)) {
195 if (len > sizeof(skip_buf))
196 len = sizeof(skip_buf);
197 if (!EVP_CipherUpdate(ctx, skip_buf, &outl, skip_buf, len))
202 if (EVP_CipherUpdate(ctx, data, &outl, data, data_len))
207 EVP_CIPHER_CTX_free(ctx);
209 #endif /* OPENSSL_NO_RC4 */
211 #endif /* CONFIG_NO_RC4 */
215 int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
217 return openssl_digest_vector(EVP_md5(), num_elem, addr, len, mac);
219 #endif /* CONFIG_FIPS */
222 int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
224 return openssl_digest_vector(EVP_sha1(), num_elem, addr, len, mac);
228 #ifndef NO_SHA256_WRAPPER
229 int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
232 return openssl_digest_vector(EVP_sha256(), num_elem, addr, len, mac);
234 #endif /* NO_SHA256_WRAPPER */
237 static const EVP_CIPHER * aes_get_evp_cipher(size_t keylen)
241 return EVP_aes_128_ecb();
242 #ifndef OPENSSL_IS_BORINGSSL
244 return EVP_aes_192_ecb();
245 #endif /* OPENSSL_IS_BORINGSSL */
247 return EVP_aes_256_ecb();
254 void * aes_encrypt_init(const u8 *key, size_t len)
257 const EVP_CIPHER *type;
262 type = aes_get_evp_cipher(len);
266 ctx = EVP_CIPHER_CTX_new();
269 if (EVP_EncryptInit_ex(ctx, type, NULL, key, NULL) != 1) {
273 EVP_CIPHER_CTX_set_padding(ctx, 0);
278 void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
280 EVP_CIPHER_CTX *c = ctx;
282 if (EVP_EncryptUpdate(c, crypt, &clen, plain, 16) != 1) {
283 wpa_printf(MSG_ERROR, "OpenSSL: EVP_EncryptUpdate failed: %s",
284 ERR_error_string(ERR_get_error(), NULL));
289 void aes_encrypt_deinit(void *ctx)
291 EVP_CIPHER_CTX *c = ctx;
293 int len = sizeof(buf);
294 if (EVP_EncryptFinal_ex(c, buf, &len) != 1) {
295 wpa_printf(MSG_ERROR, "OpenSSL: EVP_EncryptFinal_ex failed: "
296 "%s", ERR_error_string(ERR_get_error(), NULL));
299 wpa_printf(MSG_ERROR, "OpenSSL: Unexpected padding length %d "
300 "in AES encrypt", len);
302 EVP_CIPHER_CTX_free(c);
306 void * aes_decrypt_init(const u8 *key, size_t len)
309 const EVP_CIPHER *type;
314 type = aes_get_evp_cipher(len);
318 ctx = EVP_CIPHER_CTX_new();
321 if (EVP_DecryptInit_ex(ctx, type, NULL, key, NULL) != 1) {
322 EVP_CIPHER_CTX_free(ctx);
325 EVP_CIPHER_CTX_set_padding(ctx, 0);
330 void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
332 EVP_CIPHER_CTX *c = ctx;
334 if (EVP_DecryptUpdate(c, plain, &plen, crypt, 16) != 1) {
335 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DecryptUpdate failed: %s",
336 ERR_error_string(ERR_get_error(), NULL));
341 void aes_decrypt_deinit(void *ctx)
343 EVP_CIPHER_CTX *c = ctx;
345 int len = sizeof(buf);
346 if (EVP_DecryptFinal_ex(c, buf, &len) != 1) {
347 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DecryptFinal_ex failed: "
348 "%s", ERR_error_string(ERR_get_error(), NULL));
351 wpa_printf(MSG_ERROR, "OpenSSL: Unexpected padding length %d "
352 "in AES decrypt", len);
354 EVP_CIPHER_CTX_free(c);
359 #ifndef CONFIG_OPENSSL_INTERNAL_AES_WRAP
361 int aes_wrap(const u8 *kek, size_t kek_len, int n, const u8 *plain, u8 *cipher)
366 if (AES_set_encrypt_key(kek, kek_len << 3, &actx))
368 res = AES_wrap_key(&actx, NULL, cipher, plain, n * 8);
369 OPENSSL_cleanse(&actx, sizeof(actx));
370 return res <= 0 ? -1 : 0;
374 int aes_unwrap(const u8 *kek, size_t kek_len, int n, const u8 *cipher,
380 if (AES_set_decrypt_key(kek, kek_len << 3, &actx))
382 res = AES_unwrap_key(&actx, NULL, plain, cipher, (n + 1) * 8);
383 OPENSSL_cleanse(&actx, sizeof(actx));
384 return res <= 0 ? -1 : 0;
387 #endif /* CONFIG_OPENSSL_INTERNAL_AES_WRAP */
388 #endif /* CONFIG_FIPS */
391 int aes_128_cbc_encrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
401 ctx = EVP_CIPHER_CTX_new();
406 if (EVP_EncryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv) == 1 &&
407 EVP_CIPHER_CTX_set_padding(ctx, 0) == 1 &&
408 EVP_EncryptUpdate(ctx, data, &clen, data, data_len) == 1 &&
409 clen == (int) data_len &&
410 EVP_EncryptFinal_ex(ctx, buf, &len) == 1 && len == 0)
412 EVP_CIPHER_CTX_free(ctx);
418 int aes_128_cbc_decrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
428 ctx = EVP_CIPHER_CTX_new();
433 if (EVP_DecryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv) == 1 &&
434 EVP_CIPHER_CTX_set_padding(ctx, 0) == 1 &&
435 EVP_DecryptUpdate(ctx, data, &plen, data, data_len) == 1 &&
436 plen == (int) data_len &&
437 EVP_DecryptFinal_ex(ctx, buf, &len) == 1 && len == 0)
439 EVP_CIPHER_CTX_free(ctx);
446 int crypto_mod_exp(const u8 *base, size_t base_len,
447 const u8 *power, size_t power_len,
448 const u8 *modulus, size_t modulus_len,
449 u8 *result, size_t *result_len)
451 BIGNUM *bn_base, *bn_exp, *bn_modulus, *bn_result;
459 bn_base = BN_bin2bn(base, base_len, NULL);
460 bn_exp = BN_bin2bn(power, power_len, NULL);
461 bn_modulus = BN_bin2bn(modulus, modulus_len, NULL);
462 bn_result = BN_new();
464 if (bn_base == NULL || bn_exp == NULL || bn_modulus == NULL ||
468 if (BN_mod_exp(bn_result, bn_base, bn_exp, bn_modulus, ctx) != 1)
471 *result_len = BN_bn2bin(bn_result, result);
475 BN_clear_free(bn_base);
476 BN_clear_free(bn_exp);
477 BN_clear_free(bn_modulus);
478 BN_clear_free(bn_result);
484 struct crypto_cipher {
490 struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
491 const u8 *iv, const u8 *key,
494 struct crypto_cipher *ctx;
495 const EVP_CIPHER *cipher;
497 ctx = os_zalloc(sizeof(*ctx));
502 #ifndef CONFIG_NO_RC4
503 #ifndef OPENSSL_NO_RC4
504 case CRYPTO_CIPHER_ALG_RC4:
507 #endif /* OPENSSL_NO_RC4 */
508 #endif /* CONFIG_NO_RC4 */
509 #ifndef OPENSSL_NO_AES
510 case CRYPTO_CIPHER_ALG_AES:
513 cipher = EVP_aes_128_cbc();
515 #ifndef OPENSSL_IS_BORINGSSL
517 cipher = EVP_aes_192_cbc();
519 #endif /* OPENSSL_IS_BORINGSSL */
521 cipher = EVP_aes_256_cbc();
528 #endif /* OPENSSL_NO_AES */
529 #ifndef OPENSSL_NO_DES
530 case CRYPTO_CIPHER_ALG_3DES:
531 cipher = EVP_des_ede3_cbc();
533 case CRYPTO_CIPHER_ALG_DES:
534 cipher = EVP_des_cbc();
536 #endif /* OPENSSL_NO_DES */
537 #ifndef OPENSSL_NO_RC2
538 case CRYPTO_CIPHER_ALG_RC2:
539 cipher = EVP_rc2_ecb();
541 #endif /* OPENSSL_NO_RC2 */
547 if (!(ctx->enc = EVP_CIPHER_CTX_new()) ||
548 !EVP_CIPHER_CTX_set_padding(ctx->enc, 0) ||
549 !EVP_EncryptInit_ex(ctx->enc, cipher, NULL, NULL, NULL) ||
550 !EVP_CIPHER_CTX_set_key_length(ctx->enc, key_len) ||
551 !EVP_EncryptInit_ex(ctx->enc, NULL, NULL, key, iv)) {
553 EVP_CIPHER_CTX_free(ctx->enc);
558 if (!(ctx->dec = EVP_CIPHER_CTX_new()) ||
559 !EVP_CIPHER_CTX_set_padding(ctx->dec, 0) ||
560 !EVP_DecryptInit_ex(ctx->dec, cipher, NULL, NULL, NULL) ||
561 !EVP_CIPHER_CTX_set_key_length(ctx->dec, key_len) ||
562 !EVP_DecryptInit_ex(ctx->dec, NULL, NULL, key, iv)) {
563 EVP_CIPHER_CTX_free(ctx->enc);
565 EVP_CIPHER_CTX_free(ctx->dec);
574 int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
575 u8 *crypt, size_t len)
578 if (!EVP_EncryptUpdate(ctx->enc, crypt, &outl, plain, len))
584 int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
585 u8 *plain, size_t len)
589 if (!EVP_DecryptUpdate(ctx->dec, plain, &outl, crypt, len))
595 void crypto_cipher_deinit(struct crypto_cipher *ctx)
597 EVP_CIPHER_CTX_free(ctx->enc);
598 EVP_CIPHER_CTX_free(ctx->dec);
603 void * dh5_init(struct wpabuf **priv, struct wpabuf **publ)
605 #if OPENSSL_VERSION_NUMBER < 0x10100000L
607 struct wpabuf *pubkey = NULL, *privkey = NULL;
608 size_t publen, privlen;
619 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
622 dh->p = get_group5_prime();
626 if (DH_generate_key(dh) != 1)
629 publen = BN_num_bytes(dh->pub_key);
630 pubkey = wpabuf_alloc(publen);
633 privlen = BN_num_bytes(dh->priv_key);
634 privkey = wpabuf_alloc(privlen);
638 BN_bn2bin(dh->pub_key, wpabuf_put(pubkey, publen));
639 BN_bn2bin(dh->priv_key, wpabuf_put(privkey, privlen));
646 wpabuf_clear_free(pubkey);
647 wpabuf_clear_free(privkey);
652 struct wpabuf *pubkey = NULL, *privkey = NULL;
653 size_t publen, privlen;
654 BIGNUM *p = NULL, *g, *priv_key = NULL, *pub_key = NULL;
665 p = get_group5_prime();
666 if (!g || BN_set_word(g, 2) != 1 || !p ||
667 DH_set0_pqg(dh, p, NULL, g) != 1)
672 if (DH_generate_key(dh) != 1)
675 DH_get0_key(dh, &pub_key, &priv_key);
676 publen = BN_num_bytes(pub_key);
677 pubkey = wpabuf_alloc(publen);
680 privlen = BN_num_bytes(priv_key);
681 privkey = wpabuf_alloc(privlen);
685 BN_bn2bin(pub_key, wpabuf_put(pubkey, publen));
686 BN_bn2bin(priv_key, wpabuf_put(privkey, privlen));
695 wpabuf_clear_free(pubkey);
696 wpabuf_clear_free(privkey);
703 void * dh5_init_fixed(const struct wpabuf *priv, const struct wpabuf *publ)
705 #if OPENSSL_VERSION_NUMBER < 0x10100000L
713 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
716 dh->p = get_group5_prime();
720 dh->priv_key = BN_bin2bn(wpabuf_head(priv), wpabuf_len(priv), NULL);
721 if (dh->priv_key == NULL)
724 dh->pub_key = BN_bin2bn(wpabuf_head(publ), wpabuf_len(publ), NULL);
725 if (dh->pub_key == NULL)
728 if (DH_generate_key(dh) != 1)
738 BIGNUM *p = NULL, *g, *priv_key = NULL, *pub_key = NULL;
745 p = get_group5_prime();
746 if (!g || BN_set_word(g, 2) != 1 || !p ||
747 DH_set0_pqg(dh, p, NULL, g) != 1)
752 priv_key = BN_bin2bn(wpabuf_head(priv), wpabuf_len(priv), NULL);
753 pub_key = BN_bin2bn(wpabuf_head(publ), wpabuf_len(publ), NULL);
754 if (!priv_key || !pub_key || DH_set0_key(dh, pub_key, priv_key) != 0)
759 if (DH_generate_key(dh) != 1)
768 BN_clear_free(priv_key);
775 struct wpabuf * dh5_derive_shared(void *ctx, const struct wpabuf *peer_public,
776 const struct wpabuf *own_private)
779 struct wpabuf *res = NULL;
787 pub_key = BN_bin2bn(wpabuf_head(peer_public), wpabuf_len(peer_public),
793 res = wpabuf_alloc(rlen);
797 keylen = DH_compute_key(wpabuf_mhead(res), pub_key, dh);
800 wpabuf_put(res, keylen);
801 BN_clear_free(pub_key);
806 BN_clear_free(pub_key);
807 wpabuf_clear_free(res);
812 void dh5_free(void *ctx)
827 struct crypto_hash * crypto_hash_init(enum crypto_hash_alg alg, const u8 *key,
830 struct crypto_hash *ctx;
834 #ifndef OPENSSL_NO_MD5
835 case CRYPTO_HASH_ALG_HMAC_MD5:
838 #endif /* OPENSSL_NO_MD5 */
839 #ifndef OPENSSL_NO_SHA
840 case CRYPTO_HASH_ALG_HMAC_SHA1:
843 #endif /* OPENSSL_NO_SHA */
844 #ifndef OPENSSL_NO_SHA256
846 case CRYPTO_HASH_ALG_HMAC_SHA256:
849 #endif /* CONFIG_SHA256 */
850 #endif /* OPENSSL_NO_SHA256 */
855 ctx = os_zalloc(sizeof(*ctx));
858 ctx->ctx = HMAC_CTX_new();
864 if (HMAC_Init_ex(ctx->ctx, key, key_len, md, NULL) != 1) {
865 HMAC_CTX_free(ctx->ctx);
866 bin_clear_free(ctx, sizeof(*ctx));
874 void crypto_hash_update(struct crypto_hash *ctx, const u8 *data, size_t len)
878 HMAC_Update(ctx->ctx, data, len);
882 int crypto_hash_finish(struct crypto_hash *ctx, u8 *mac, size_t *len)
890 if (mac == NULL || len == NULL) {
891 HMAC_CTX_free(ctx->ctx);
892 bin_clear_free(ctx, sizeof(*ctx));
897 res = HMAC_Final(ctx->ctx, mac, &mdlen);
898 HMAC_CTX_free(ctx->ctx);
899 bin_clear_free(ctx, sizeof(*ctx));
910 static int openssl_hmac_vector(const EVP_MD *type, const u8 *key,
911 size_t key_len, size_t num_elem,
912 const u8 *addr[], const size_t *len, u8 *mac,
922 ctx = HMAC_CTX_new();
925 res = HMAC_Init_ex(ctx, key, key_len, type, NULL);
929 for (i = 0; i < num_elem; i++)
930 HMAC_Update(ctx, addr[i], len[i]);
932 res = HMAC_Final(ctx, mac, &mdlen);
936 return res == 1 ? 0 : -1;
942 int hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
943 const u8 *addr[], const size_t *len, u8 *mac)
945 return openssl_hmac_vector(EVP_md5(), key ,key_len, num_elem, addr, len,
950 int hmac_md5(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
953 return hmac_md5_vector(key, key_len, 1, &data, &data_len, mac);
956 #endif /* CONFIG_FIPS */
959 int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len,
960 int iterations, u8 *buf, size_t buflen)
962 if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase), ssid,
963 ssid_len, iterations, buflen, buf) != 1)
969 int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem,
970 const u8 *addr[], const size_t *len, u8 *mac)
972 return openssl_hmac_vector(EVP_sha1(), key, key_len, num_elem, addr,
977 int hmac_sha1(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
980 return hmac_sha1_vector(key, key_len, 1, &data, &data_len, mac);
986 int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
987 const u8 *addr[], const size_t *len, u8 *mac)
989 return openssl_hmac_vector(EVP_sha256(), key, key_len, num_elem, addr,
994 int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
995 size_t data_len, u8 *mac)
997 return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac);
1000 #endif /* CONFIG_SHA256 */
1003 #ifdef CONFIG_SHA384
1005 int hmac_sha384_vector(const u8 *key, size_t key_len, size_t num_elem,
1006 const u8 *addr[], const size_t *len, u8 *mac)
1008 return openssl_hmac_vector(EVP_sha384(), key, key_len, num_elem, addr,
1013 int hmac_sha384(const u8 *key, size_t key_len, const u8 *data,
1014 size_t data_len, u8 *mac)
1016 return hmac_sha384_vector(key, key_len, 1, &data, &data_len, mac);
1019 #endif /* CONFIG_SHA384 */
1022 int crypto_get_random(void *buf, size_t len)
1024 if (RAND_bytes(buf, len) != 1)
1030 #ifdef CONFIG_OPENSSL_CMAC
1031 int omac1_aes_vector(const u8 *key, size_t key_len, size_t num_elem,
1032 const u8 *addr[], const size_t *len, u8 *mac)
1041 ctx = CMAC_CTX_new();
1045 if (key_len == 32) {
1046 if (!CMAC_Init(ctx, key, 32, EVP_aes_256_cbc(), NULL))
1048 } else if (key_len == 16) {
1049 if (!CMAC_Init(ctx, key, 16, EVP_aes_128_cbc(), NULL))
1054 for (i = 0; i < num_elem; i++) {
1055 if (!CMAC_Update(ctx, addr[i], len[i]))
1058 if (!CMAC_Final(ctx, mac, &outlen) || outlen != 16)
1068 int omac1_aes_128_vector(const u8 *key, size_t num_elem,
1069 const u8 *addr[], const size_t *len, u8 *mac)
1071 return omac1_aes_vector(key, 16, num_elem, addr, len, mac);
1075 int omac1_aes_128(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
1077 return omac1_aes_128_vector(key, 1, &data, &data_len, mac);
1081 int omac1_aes_256(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
1083 return omac1_aes_vector(key, 32, 1, &data, &data_len, mac);
1085 #endif /* CONFIG_OPENSSL_CMAC */
1088 struct crypto_bignum * crypto_bignum_init(void)
1092 return (struct crypto_bignum *) BN_new();
1096 struct crypto_bignum * crypto_bignum_init_set(const u8 *buf, size_t len)
1103 bn = BN_bin2bn(buf, len, NULL);
1104 return (struct crypto_bignum *) bn;
1108 void crypto_bignum_deinit(struct crypto_bignum *n, int clear)
1111 BN_clear_free((BIGNUM *) n);
1113 BN_free((BIGNUM *) n);
1117 int crypto_bignum_to_bin(const struct crypto_bignum *a,
1118 u8 *buf, size_t buflen, size_t padlen)
1120 int num_bytes, offset;
1125 if (padlen > buflen)
1128 num_bytes = BN_num_bytes((const BIGNUM *) a);
1129 if ((size_t) num_bytes > buflen)
1131 if (padlen > (size_t) num_bytes)
1132 offset = padlen - num_bytes;
1136 os_memset(buf, 0, offset);
1137 BN_bn2bin((const BIGNUM *) a, buf + offset);
1139 return num_bytes + offset;
1143 int crypto_bignum_add(const struct crypto_bignum *a,
1144 const struct crypto_bignum *b,
1145 struct crypto_bignum *c)
1147 return BN_add((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
1152 int crypto_bignum_mod(const struct crypto_bignum *a,
1153 const struct crypto_bignum *b,
1154 struct crypto_bignum *c)
1159 bnctx = BN_CTX_new();
1162 res = BN_mod((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b,
1166 return res ? 0 : -1;
1170 int crypto_bignum_exptmod(const struct crypto_bignum *a,
1171 const struct crypto_bignum *b,
1172 const struct crypto_bignum *c,
1173 struct crypto_bignum *d)
1181 bnctx = BN_CTX_new();
1184 res = BN_mod_exp((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1185 (const BIGNUM *) c, bnctx);
1188 return res ? 0 : -1;
1192 int crypto_bignum_inverse(const struct crypto_bignum *a,
1193 const struct crypto_bignum *b,
1194 struct crypto_bignum *c)
1201 bnctx = BN_CTX_new();
1204 res = BN_mod_inverse((BIGNUM *) c, (const BIGNUM *) a,
1205 (const BIGNUM *) b, bnctx);
1208 return res ? 0 : -1;
1212 int crypto_bignum_sub(const struct crypto_bignum *a,
1213 const struct crypto_bignum *b,
1214 struct crypto_bignum *c)
1218 return BN_sub((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
1223 int crypto_bignum_div(const struct crypto_bignum *a,
1224 const struct crypto_bignum *b,
1225 struct crypto_bignum *c)
1234 bnctx = BN_CTX_new();
1237 res = BN_div((BIGNUM *) c, NULL, (const BIGNUM *) a,
1238 (const BIGNUM *) b, bnctx);
1241 return res ? 0 : -1;
1245 int crypto_bignum_mulmod(const struct crypto_bignum *a,
1246 const struct crypto_bignum *b,
1247 const struct crypto_bignum *c,
1248 struct crypto_bignum *d)
1257 bnctx = BN_CTX_new();
1260 res = BN_mod_mul((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1261 (const BIGNUM *) c, bnctx);
1264 return res ? 0 : -1;
1268 int crypto_bignum_cmp(const struct crypto_bignum *a,
1269 const struct crypto_bignum *b)
1271 return BN_cmp((const BIGNUM *) a, (const BIGNUM *) b);
1275 int crypto_bignum_bits(const struct crypto_bignum *a)
1277 return BN_num_bits((const BIGNUM *) a);
1281 int crypto_bignum_is_zero(const struct crypto_bignum *a)
1283 return BN_is_zero((const BIGNUM *) a);
1287 int crypto_bignum_is_one(const struct crypto_bignum *a)
1289 return BN_is_one((const BIGNUM *) a);
1293 int crypto_bignum_legendre(const struct crypto_bignum *a,
1294 const struct crypto_bignum *p)
1297 BIGNUM *exp = NULL, *tmp = NULL;
1303 bnctx = BN_CTX_new();
1310 /* exp = (p-1) / 2 */
1311 !BN_sub(exp, (const BIGNUM *) p, BN_value_one()) ||
1312 !BN_rshift1(exp, exp) ||
1313 !BN_mod_exp(tmp, (const BIGNUM *) a, exp, (const BIGNUM *) p,
1317 if (BN_is_word(tmp, 1))
1319 else if (BN_is_zero(tmp))
1343 struct crypto_ec * crypto_ec_init(int group)
1345 struct crypto_ec *e;
1348 /* Map from IANA registry for IKE D-H groups to OpenSSL NID */
1351 nid = NID_X9_62_prime256v1;
1354 nid = NID_secp384r1;
1357 nid = NID_secp521r1;
1360 nid = NID_X9_62_prime192v1;
1363 nid = NID_secp224r1;
1365 #ifdef NID_brainpoolP224r1
1367 nid = NID_brainpoolP224r1;
1369 #endif /* NID_brainpoolP224r1 */
1370 #ifdef NID_brainpoolP256r1
1372 nid = NID_brainpoolP256r1;
1374 #endif /* NID_brainpoolP256r1 */
1375 #ifdef NID_brainpoolP384r1
1377 nid = NID_brainpoolP384r1;
1379 #endif /* NID_brainpoolP384r1 */
1380 #ifdef NID_brainpoolP512r1
1382 nid = NID_brainpoolP512r1;
1384 #endif /* NID_brainpoolP512r1 */
1389 e = os_zalloc(sizeof(*e));
1393 e->bnctx = BN_CTX_new();
1394 e->group = EC_GROUP_new_by_curve_name(nid);
1395 e->prime = BN_new();
1396 e->order = BN_new();
1399 if (e->group == NULL || e->bnctx == NULL || e->prime == NULL ||
1400 e->order == NULL || e->a == NULL || e->b == NULL ||
1401 !EC_GROUP_get_curve_GFp(e->group, e->prime, e->a, e->b, e->bnctx) ||
1402 !EC_GROUP_get_order(e->group, e->order, e->bnctx)) {
1403 crypto_ec_deinit(e);
1411 void crypto_ec_deinit(struct crypto_ec *e)
1415 BN_clear_free(e->b);
1416 BN_clear_free(e->a);
1417 BN_clear_free(e->order);
1418 BN_clear_free(e->prime);
1419 EC_GROUP_free(e->group);
1420 BN_CTX_free(e->bnctx);
1425 struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e)
1431 return (struct crypto_ec_point *) EC_POINT_new(e->group);
1435 size_t crypto_ec_prime_len(struct crypto_ec *e)
1437 return BN_num_bytes(e->prime);
1441 size_t crypto_ec_prime_len_bits(struct crypto_ec *e)
1443 return BN_num_bits(e->prime);
1447 const struct crypto_bignum * crypto_ec_get_prime(struct crypto_ec *e)
1449 return (const struct crypto_bignum *) e->prime;
1453 const struct crypto_bignum * crypto_ec_get_order(struct crypto_ec *e)
1455 return (const struct crypto_bignum *) e->order;
1459 void crypto_ec_point_deinit(struct crypto_ec_point *p, int clear)
1462 EC_POINT_clear_free((EC_POINT *) p);
1464 EC_POINT_free((EC_POINT *) p);
1468 int crypto_ec_point_to_bin(struct crypto_ec *e,
1469 const struct crypto_ec_point *point, u8 *x, u8 *y)
1471 BIGNUM *x_bn, *y_bn;
1473 int len = BN_num_bytes(e->prime);
1482 EC_POINT_get_affine_coordinates_GFp(e->group, (EC_POINT *) point,
1483 x_bn, y_bn, e->bnctx)) {
1485 crypto_bignum_to_bin((struct crypto_bignum *) x_bn,
1489 crypto_bignum_to_bin((struct crypto_bignum *) y_bn,
1495 BN_clear_free(x_bn);
1496 BN_clear_free(y_bn);
1501 struct crypto_ec_point * crypto_ec_point_from_bin(struct crypto_ec *e,
1506 int len = BN_num_bytes(e->prime);
1511 x = BN_bin2bn(val, len, NULL);
1512 y = BN_bin2bn(val + len, len, NULL);
1513 elem = EC_POINT_new(e->group);
1514 if (x == NULL || y == NULL || elem == NULL) {
1517 EC_POINT_clear_free(elem);
1521 if (!EC_POINT_set_affine_coordinates_GFp(e->group, elem, x, y,
1523 EC_POINT_clear_free(elem);
1530 return (struct crypto_ec_point *) elem;
1534 int crypto_ec_point_add(struct crypto_ec *e, const struct crypto_ec_point *a,
1535 const struct crypto_ec_point *b,
1536 struct crypto_ec_point *c)
1540 return EC_POINT_add(e->group, (EC_POINT *) c, (const EC_POINT *) a,
1541 (const EC_POINT *) b, e->bnctx) ? 0 : -1;
1545 int crypto_ec_point_mul(struct crypto_ec *e, const struct crypto_ec_point *p,
1546 const struct crypto_bignum *b,
1547 struct crypto_ec_point *res)
1551 return EC_POINT_mul(e->group, (EC_POINT *) res, NULL,
1552 (const EC_POINT *) p, (const BIGNUM *) b, e->bnctx)
1557 int crypto_ec_point_invert(struct crypto_ec *e, struct crypto_ec_point *p)
1561 return EC_POINT_invert(e->group, (EC_POINT *) p, e->bnctx) ? 0 : -1;
1565 int crypto_ec_point_solve_y_coord(struct crypto_ec *e,
1566 struct crypto_ec_point *p,
1567 const struct crypto_bignum *x, int y_bit)
1571 if (!EC_POINT_set_compressed_coordinates_GFp(e->group, (EC_POINT *) p,
1572 (const BIGNUM *) x, y_bit,
1574 !EC_POINT_is_on_curve(e->group, (EC_POINT *) p, e->bnctx))
1580 struct crypto_bignum *
1581 crypto_ec_point_compute_y_sqr(struct crypto_ec *e,
1582 const struct crypto_bignum *x)
1584 BIGNUM *tmp, *tmp2, *y_sqr = NULL;
1592 /* y^2 = x^3 + ax + b */
1594 BN_mod_sqr(tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1595 BN_mod_mul(tmp, tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1596 BN_mod_mul(tmp2, e->a, (const BIGNUM *) x, e->prime, e->bnctx) &&
1597 BN_mod_add_quick(tmp2, tmp2, tmp, e->prime) &&
1598 BN_mod_add_quick(tmp2, tmp2, e->b, e->prime)) {
1604 BN_clear_free(tmp2);
1606 return (struct crypto_bignum *) y_sqr;
1610 int crypto_ec_point_is_at_infinity(struct crypto_ec *e,
1611 const struct crypto_ec_point *p)
1613 return EC_POINT_is_at_infinity(e->group, (const EC_POINT *) p);
1617 int crypto_ec_point_is_on_curve(struct crypto_ec *e,
1618 const struct crypto_ec_point *p)
1620 return EC_POINT_is_on_curve(e->group, (const EC_POINT *) p,
1625 int crypto_ec_point_cmp(const struct crypto_ec *e,
1626 const struct crypto_ec_point *a,
1627 const struct crypto_ec_point *b)
1629 return EC_POINT_cmp(e->group, (const EC_POINT *) a,
1630 (const EC_POINT *) b, e->bnctx);
1633 #endif /* CONFIG_ECC */