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));
96 int md4_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
98 return openssl_digest_vector(EVP_md4(), num_elem, addr, len, mac);
102 void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher)
104 u8 pkey[8], next, tmp;
108 /* Add parity bits to the key */
110 for (i = 0; i < 7; i++) {
112 pkey[i] = (tmp >> i) | next | 1;
113 next = tmp << (7 - i);
117 DES_set_key((DES_cblock *) &pkey, &ks);
118 DES_ecb_encrypt((DES_cblock *) clear, (DES_cblock *) cypher, &ks,
123 int rc4_skip(const u8 *key, size_t keylen, size_t skip,
124 u8 *data, size_t data_len)
126 #ifdef OPENSSL_NO_RC4
128 #else /* OPENSSL_NO_RC4 */
132 unsigned char skip_buf[16];
134 EVP_CIPHER_CTX_init(&ctx);
135 if (!EVP_CIPHER_CTX_set_padding(&ctx, 0) ||
136 !EVP_CipherInit_ex(&ctx, EVP_rc4(), NULL, NULL, NULL, 1) ||
137 !EVP_CIPHER_CTX_set_key_length(&ctx, keylen) ||
138 !EVP_CipherInit_ex(&ctx, NULL, NULL, key, NULL, 1))
141 while (skip >= sizeof(skip_buf)) {
143 if (len > sizeof(skip_buf))
144 len = sizeof(skip_buf);
145 if (!EVP_CipherUpdate(&ctx, skip_buf, &outl, skip_buf, len))
150 if (EVP_CipherUpdate(&ctx, data, &outl, data, data_len))
154 EVP_CIPHER_CTX_cleanup(&ctx);
156 #endif /* OPENSSL_NO_RC4 */
161 int md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
163 return openssl_digest_vector(EVP_md5(), num_elem, addr, len, mac);
165 #endif /* CONFIG_FIPS */
168 int sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
170 return openssl_digest_vector(EVP_sha1(), num_elem, addr, len, mac);
174 #ifndef NO_SHA256_WRAPPER
175 int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
178 return openssl_digest_vector(EVP_sha256(), num_elem, addr, len, mac);
180 #endif /* NO_SHA256_WRAPPER */
183 static const EVP_CIPHER * aes_get_evp_cipher(size_t keylen)
187 return EVP_aes_128_ecb();
188 #ifndef OPENSSL_IS_BORINGSSL
190 return EVP_aes_192_ecb();
191 #endif /* OPENSSL_IS_BORINGSSL */
193 return EVP_aes_256_ecb();
200 void * aes_encrypt_init(const u8 *key, size_t len)
203 const EVP_CIPHER *type;
205 type = aes_get_evp_cipher(len);
209 ctx = os_malloc(sizeof(*ctx));
212 EVP_CIPHER_CTX_init(ctx);
213 if (EVP_EncryptInit_ex(ctx, type, NULL, key, NULL) != 1) {
217 EVP_CIPHER_CTX_set_padding(ctx, 0);
222 void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt)
224 EVP_CIPHER_CTX *c = ctx;
226 if (EVP_EncryptUpdate(c, crypt, &clen, plain, 16) != 1) {
227 wpa_printf(MSG_ERROR, "OpenSSL: EVP_EncryptUpdate failed: %s",
228 ERR_error_string(ERR_get_error(), NULL));
233 void aes_encrypt_deinit(void *ctx)
235 EVP_CIPHER_CTX *c = ctx;
237 int len = sizeof(buf);
238 if (EVP_EncryptFinal_ex(c, buf, &len) != 1) {
239 wpa_printf(MSG_ERROR, "OpenSSL: EVP_EncryptFinal_ex failed: "
240 "%s", ERR_error_string(ERR_get_error(), NULL));
243 wpa_printf(MSG_ERROR, "OpenSSL: Unexpected padding length %d "
244 "in AES encrypt", len);
246 EVP_CIPHER_CTX_cleanup(c);
247 bin_clear_free(c, sizeof(*c));
251 void * aes_decrypt_init(const u8 *key, size_t len)
254 const EVP_CIPHER *type;
256 type = aes_get_evp_cipher(len);
260 ctx = os_malloc(sizeof(*ctx));
263 EVP_CIPHER_CTX_init(ctx);
264 if (EVP_DecryptInit_ex(ctx, type, NULL, key, NULL) != 1) {
268 EVP_CIPHER_CTX_set_padding(ctx, 0);
273 void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain)
275 EVP_CIPHER_CTX *c = ctx;
277 if (EVP_DecryptUpdate(c, plain, &plen, crypt, 16) != 1) {
278 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DecryptUpdate failed: %s",
279 ERR_error_string(ERR_get_error(), NULL));
284 void aes_decrypt_deinit(void *ctx)
286 EVP_CIPHER_CTX *c = ctx;
288 int len = sizeof(buf);
289 if (EVP_DecryptFinal_ex(c, buf, &len) != 1) {
290 wpa_printf(MSG_ERROR, "OpenSSL: EVP_DecryptFinal_ex failed: "
291 "%s", ERR_error_string(ERR_get_error(), NULL));
294 wpa_printf(MSG_ERROR, "OpenSSL: Unexpected padding length %d "
295 "in AES decrypt", len);
297 EVP_CIPHER_CTX_cleanup(c);
298 bin_clear_free(c, sizeof(*c));
304 int aes_wrap(const u8 *kek, size_t kek_len, int n, const u8 *plain, u8 *cipher)
309 if (AES_set_encrypt_key(kek, kek_len << 3, &actx))
311 res = AES_wrap_key(&actx, NULL, cipher, plain, n * 8);
312 OPENSSL_cleanse(&actx, sizeof(actx));
313 return res <= 0 ? -1 : 0;
317 int aes_unwrap(const u8 *kek, size_t kek_len, int n, const u8 *cipher,
323 if (AES_set_decrypt_key(kek, kek_len << 3, &actx))
325 res = AES_unwrap_key(&actx, NULL, plain, cipher, (n + 1) * 8);
326 OPENSSL_cleanse(&actx, sizeof(actx));
327 return res <= 0 ? -1 : 0;
330 #endif /* CONFIG_FIPS */
333 int aes_128_cbc_encrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
339 EVP_CIPHER_CTX_init(&ctx);
340 if (EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, key, iv) != 1)
342 EVP_CIPHER_CTX_set_padding(&ctx, 0);
345 if (EVP_EncryptUpdate(&ctx, data, &clen, data, data_len) != 1 ||
346 clen != (int) data_len)
350 if (EVP_EncryptFinal_ex(&ctx, buf, &len) != 1 || len != 0)
352 EVP_CIPHER_CTX_cleanup(&ctx);
358 int aes_128_cbc_decrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
364 EVP_CIPHER_CTX_init(&ctx);
365 if (EVP_DecryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, key, iv) != 1)
367 EVP_CIPHER_CTX_set_padding(&ctx, 0);
370 if (EVP_DecryptUpdate(&ctx, data, &plen, data, data_len) != 1 ||
371 plen != (int) data_len)
375 if (EVP_DecryptFinal_ex(&ctx, buf, &len) != 1 || len != 0)
377 EVP_CIPHER_CTX_cleanup(&ctx);
383 int crypto_mod_exp(const u8 *base, size_t base_len,
384 const u8 *power, size_t power_len,
385 const u8 *modulus, size_t modulus_len,
386 u8 *result, size_t *result_len)
388 BIGNUM *bn_base, *bn_exp, *bn_modulus, *bn_result;
396 bn_base = BN_bin2bn(base, base_len, NULL);
397 bn_exp = BN_bin2bn(power, power_len, NULL);
398 bn_modulus = BN_bin2bn(modulus, modulus_len, NULL);
399 bn_result = BN_new();
401 if (bn_base == NULL || bn_exp == NULL || bn_modulus == NULL ||
405 if (BN_mod_exp(bn_result, bn_base, bn_exp, bn_modulus, ctx) != 1)
408 *result_len = BN_bn2bin(bn_result, result);
412 BN_clear_free(bn_base);
413 BN_clear_free(bn_exp);
414 BN_clear_free(bn_modulus);
415 BN_clear_free(bn_result);
421 struct crypto_cipher {
427 struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg,
428 const u8 *iv, const u8 *key,
431 struct crypto_cipher *ctx;
432 const EVP_CIPHER *cipher;
434 ctx = os_zalloc(sizeof(*ctx));
439 #ifndef OPENSSL_NO_RC4
440 case CRYPTO_CIPHER_ALG_RC4:
443 #endif /* OPENSSL_NO_RC4 */
444 #ifndef OPENSSL_NO_AES
445 case CRYPTO_CIPHER_ALG_AES:
448 cipher = EVP_aes_128_cbc();
450 #ifndef OPENSSL_IS_BORINGSSL
452 cipher = EVP_aes_192_cbc();
454 #endif /* OPENSSL_IS_BORINGSSL */
456 cipher = EVP_aes_256_cbc();
463 #endif /* OPENSSL_NO_AES */
464 #ifndef OPENSSL_NO_DES
465 case CRYPTO_CIPHER_ALG_3DES:
466 cipher = EVP_des_ede3_cbc();
468 case CRYPTO_CIPHER_ALG_DES:
469 cipher = EVP_des_cbc();
471 #endif /* OPENSSL_NO_DES */
472 #ifndef OPENSSL_NO_RC2
473 case CRYPTO_CIPHER_ALG_RC2:
474 cipher = EVP_rc2_ecb();
476 #endif /* OPENSSL_NO_RC2 */
482 EVP_CIPHER_CTX_init(&ctx->enc);
483 EVP_CIPHER_CTX_set_padding(&ctx->enc, 0);
484 if (!EVP_EncryptInit_ex(&ctx->enc, cipher, NULL, NULL, NULL) ||
485 !EVP_CIPHER_CTX_set_key_length(&ctx->enc, key_len) ||
486 !EVP_EncryptInit_ex(&ctx->enc, NULL, NULL, key, iv)) {
487 EVP_CIPHER_CTX_cleanup(&ctx->enc);
492 EVP_CIPHER_CTX_init(&ctx->dec);
493 EVP_CIPHER_CTX_set_padding(&ctx->dec, 0);
494 if (!EVP_DecryptInit_ex(&ctx->dec, cipher, NULL, NULL, NULL) ||
495 !EVP_CIPHER_CTX_set_key_length(&ctx->dec, key_len) ||
496 !EVP_DecryptInit_ex(&ctx->dec, NULL, NULL, key, iv)) {
497 EVP_CIPHER_CTX_cleanup(&ctx->enc);
498 EVP_CIPHER_CTX_cleanup(&ctx->dec);
507 int crypto_cipher_encrypt(struct crypto_cipher *ctx, const u8 *plain,
508 u8 *crypt, size_t len)
511 if (!EVP_EncryptUpdate(&ctx->enc, crypt, &outl, plain, len))
517 int crypto_cipher_decrypt(struct crypto_cipher *ctx, const u8 *crypt,
518 u8 *plain, size_t len)
522 if (!EVP_DecryptUpdate(&ctx->dec, plain, &outl, crypt, len))
528 void crypto_cipher_deinit(struct crypto_cipher *ctx)
530 EVP_CIPHER_CTX_cleanup(&ctx->enc);
531 EVP_CIPHER_CTX_cleanup(&ctx->dec);
536 void * dh5_init(struct wpabuf **priv, struct wpabuf **publ)
539 struct wpabuf *pubkey = NULL, *privkey = NULL;
540 size_t publen, privlen;
550 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
553 dh->p = get_group5_prime();
557 if (DH_generate_key(dh) != 1)
560 publen = BN_num_bytes(dh->pub_key);
561 pubkey = wpabuf_alloc(publen);
564 privlen = BN_num_bytes(dh->priv_key);
565 privkey = wpabuf_alloc(privlen);
569 BN_bn2bin(dh->pub_key, wpabuf_put(pubkey, publen));
570 BN_bn2bin(dh->priv_key, wpabuf_put(privkey, privlen));
577 wpabuf_clear_free(pubkey);
578 wpabuf_clear_free(privkey);
584 void * dh5_init_fixed(const struct wpabuf *priv, const struct wpabuf *publ)
593 if (dh->g == NULL || BN_set_word(dh->g, 2) != 1)
596 dh->p = get_group5_prime();
600 dh->priv_key = BN_bin2bn(wpabuf_head(priv), wpabuf_len(priv), NULL);
601 if (dh->priv_key == NULL)
604 dh->pub_key = BN_bin2bn(wpabuf_head(publ), wpabuf_len(publ), NULL);
605 if (dh->pub_key == NULL)
608 if (DH_generate_key(dh) != 1)
619 struct wpabuf * dh5_derive_shared(void *ctx, const struct wpabuf *peer_public,
620 const struct wpabuf *own_private)
623 struct wpabuf *res = NULL;
631 pub_key = BN_bin2bn(wpabuf_head(peer_public), wpabuf_len(peer_public),
637 res = wpabuf_alloc(rlen);
641 keylen = DH_compute_key(wpabuf_mhead(res), pub_key, dh);
644 wpabuf_put(res, keylen);
645 BN_clear_free(pub_key);
650 BN_clear_free(pub_key);
651 wpabuf_clear_free(res);
656 void dh5_free(void *ctx)
671 struct crypto_hash * crypto_hash_init(enum crypto_hash_alg alg, const u8 *key,
674 struct crypto_hash *ctx;
678 #ifndef OPENSSL_NO_MD5
679 case CRYPTO_HASH_ALG_HMAC_MD5:
682 #endif /* OPENSSL_NO_MD5 */
683 #ifndef OPENSSL_NO_SHA
684 case CRYPTO_HASH_ALG_HMAC_SHA1:
687 #endif /* OPENSSL_NO_SHA */
688 #ifndef OPENSSL_NO_SHA256
690 case CRYPTO_HASH_ALG_HMAC_SHA256:
693 #endif /* CONFIG_SHA256 */
694 #endif /* OPENSSL_NO_SHA256 */
699 ctx = os_zalloc(sizeof(*ctx));
702 HMAC_CTX_init(&ctx->ctx);
704 #if OPENSSL_VERSION_NUMBER < 0x00909000
705 HMAC_Init_ex(&ctx->ctx, key, key_len, md, NULL);
706 #else /* openssl < 0.9.9 */
707 if (HMAC_Init_ex(&ctx->ctx, key, key_len, md, NULL) != 1) {
708 bin_clear_free(ctx, sizeof(*ctx));
711 #endif /* openssl < 0.9.9 */
717 void crypto_hash_update(struct crypto_hash *ctx, const u8 *data, size_t len)
721 HMAC_Update(&ctx->ctx, data, len);
725 int crypto_hash_finish(struct crypto_hash *ctx, u8 *mac, size_t *len)
733 if (mac == NULL || len == NULL) {
734 bin_clear_free(ctx, sizeof(*ctx));
739 #if OPENSSL_VERSION_NUMBER < 0x00909000
740 HMAC_Final(&ctx->ctx, mac, &mdlen);
742 #else /* openssl < 0.9.9 */
743 res = HMAC_Final(&ctx->ctx, mac, &mdlen);
744 #endif /* openssl < 0.9.9 */
745 HMAC_CTX_cleanup(&ctx->ctx);
746 bin_clear_free(ctx, sizeof(*ctx));
757 static int openssl_hmac_vector(const EVP_MD *type, const u8 *key,
758 size_t key_len, size_t num_elem,
759 const u8 *addr[], const size_t *len, u8 *mac,
767 #if OPENSSL_VERSION_NUMBER < 0x00909000
768 HMAC_Init_ex(&ctx, key, key_len, type, NULL);
769 #else /* openssl < 0.9.9 */
770 if (HMAC_Init_ex(&ctx, key, key_len, type, NULL) != 1)
772 #endif /* openssl < 0.9.9 */
774 for (i = 0; i < num_elem; i++)
775 HMAC_Update(&ctx, addr[i], len[i]);
777 #if OPENSSL_VERSION_NUMBER < 0x00909000
778 HMAC_Final(&ctx, mac, &mdlen);
780 #else /* openssl < 0.9.9 */
781 res = HMAC_Final(&ctx, mac, &mdlen);
782 #endif /* openssl < 0.9.9 */
783 HMAC_CTX_cleanup(&ctx);
785 return res == 1 ? 0 : -1;
791 int hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
792 const u8 *addr[], const size_t *len, u8 *mac)
794 return openssl_hmac_vector(EVP_md5(), key ,key_len, num_elem, addr, len,
799 int hmac_md5(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
802 return hmac_md5_vector(key, key_len, 1, &data, &data_len, mac);
805 #endif /* CONFIG_FIPS */
808 int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len,
809 int iterations, u8 *buf, size_t buflen)
811 if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase), ssid,
812 ssid_len, iterations, buflen, buf) != 1)
818 int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem,
819 const u8 *addr[], const size_t *len, u8 *mac)
821 return openssl_hmac_vector(EVP_sha1(), key, key_len, num_elem, addr,
826 int hmac_sha1(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
829 return hmac_sha1_vector(key, key_len, 1, &data, &data_len, mac);
835 int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
836 const u8 *addr[], const size_t *len, u8 *mac)
838 return openssl_hmac_vector(EVP_sha256(), key, key_len, num_elem, addr,
843 int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
844 size_t data_len, u8 *mac)
846 return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac);
849 #endif /* CONFIG_SHA256 */
854 int hmac_sha384_vector(const u8 *key, size_t key_len, size_t num_elem,
855 const u8 *addr[], const size_t *len, u8 *mac)
857 return openssl_hmac_vector(EVP_sha384(), key, key_len, num_elem, addr,
862 int hmac_sha384(const u8 *key, size_t key_len, const u8 *data,
863 size_t data_len, u8 *mac)
865 return hmac_sha384_vector(key, key_len, 1, &data, &data_len, mac);
868 #endif /* CONFIG_SHA384 */
871 int crypto_get_random(void *buf, size_t len)
873 if (RAND_bytes(buf, len) != 1)
879 #ifdef CONFIG_OPENSSL_CMAC
880 int omac1_aes_vector(const u8 *key, size_t key_len, size_t num_elem,
881 const u8 *addr[], const size_t *len, u8 *mac)
887 ctx = CMAC_CTX_new();
892 if (!CMAC_Init(ctx, key, 32, EVP_aes_256_cbc(), NULL))
894 } else if (key_len == 16) {
895 if (!CMAC_Init(ctx, key, 16, EVP_aes_128_cbc(), NULL))
900 for (i = 0; i < num_elem; i++) {
901 if (!CMAC_Update(ctx, addr[i], len[i]))
904 if (!CMAC_Final(ctx, mac, &outlen) || outlen != 16)
914 int omac1_aes_128_vector(const u8 *key, size_t num_elem,
915 const u8 *addr[], const size_t *len, u8 *mac)
917 return omac1_aes_vector(key, 16, num_elem, addr, len, mac);
921 int omac1_aes_128(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
923 return omac1_aes_128_vector(key, 1, &data, &data_len, mac);
927 int omac1_aes_256(const u8 *key, const u8 *data, size_t data_len, u8 *mac)
929 return omac1_aes_vector(key, 32, 1, &data, &data_len, mac);
931 #endif /* CONFIG_OPENSSL_CMAC */
934 struct crypto_bignum * crypto_bignum_init(void)
936 return (struct crypto_bignum *) BN_new();
940 struct crypto_bignum * crypto_bignum_init_set(const u8 *buf, size_t len)
942 BIGNUM *bn = BN_bin2bn(buf, len, NULL);
943 return (struct crypto_bignum *) bn;
947 void crypto_bignum_deinit(struct crypto_bignum *n, int clear)
950 BN_clear_free((BIGNUM *) n);
952 BN_free((BIGNUM *) n);
956 int crypto_bignum_to_bin(const struct crypto_bignum *a,
957 u8 *buf, size_t buflen, size_t padlen)
959 int num_bytes, offset;
964 num_bytes = BN_num_bytes((const BIGNUM *) a);
965 if ((size_t) num_bytes > buflen)
967 if (padlen > (size_t) num_bytes)
968 offset = padlen - num_bytes;
972 os_memset(buf, 0, offset);
973 BN_bn2bin((const BIGNUM *) a, buf + offset);
975 return num_bytes + offset;
979 int crypto_bignum_add(const struct crypto_bignum *a,
980 const struct crypto_bignum *b,
981 struct crypto_bignum *c)
983 return BN_add((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
988 int crypto_bignum_mod(const struct crypto_bignum *a,
989 const struct crypto_bignum *b,
990 struct crypto_bignum *c)
995 bnctx = BN_CTX_new();
998 res = BN_mod((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b,
1002 return res ? 0 : -1;
1006 int crypto_bignum_exptmod(const struct crypto_bignum *a,
1007 const struct crypto_bignum *b,
1008 const struct crypto_bignum *c,
1009 struct crypto_bignum *d)
1014 bnctx = BN_CTX_new();
1017 res = BN_mod_exp((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1018 (const BIGNUM *) c, bnctx);
1021 return res ? 0 : -1;
1025 int crypto_bignum_inverse(const struct crypto_bignum *a,
1026 const struct crypto_bignum *b,
1027 struct crypto_bignum *c)
1032 bnctx = BN_CTX_new();
1035 res = BN_mod_inverse((BIGNUM *) c, (const BIGNUM *) a,
1036 (const BIGNUM *) b, bnctx);
1039 return res ? 0 : -1;
1043 int crypto_bignum_sub(const struct crypto_bignum *a,
1044 const struct crypto_bignum *b,
1045 struct crypto_bignum *c)
1047 return BN_sub((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ?
1052 int crypto_bignum_div(const struct crypto_bignum *a,
1053 const struct crypto_bignum *b,
1054 struct crypto_bignum *c)
1060 bnctx = BN_CTX_new();
1063 res = BN_div((BIGNUM *) c, NULL, (const BIGNUM *) a,
1064 (const BIGNUM *) b, bnctx);
1067 return res ? 0 : -1;
1071 int crypto_bignum_mulmod(const struct crypto_bignum *a,
1072 const struct crypto_bignum *b,
1073 const struct crypto_bignum *c,
1074 struct crypto_bignum *d)
1080 bnctx = BN_CTX_new();
1083 res = BN_mod_mul((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b,
1084 (const BIGNUM *) c, bnctx);
1087 return res ? 0 : -1;
1091 int crypto_bignum_cmp(const struct crypto_bignum *a,
1092 const struct crypto_bignum *b)
1094 return BN_cmp((const BIGNUM *) a, (const BIGNUM *) b);
1098 int crypto_bignum_bits(const struct crypto_bignum *a)
1100 return BN_num_bits((const BIGNUM *) a);
1104 int crypto_bignum_is_zero(const struct crypto_bignum *a)
1106 return BN_is_zero((const BIGNUM *) a);
1110 int crypto_bignum_is_one(const struct crypto_bignum *a)
1112 return BN_is_one((const BIGNUM *) a);
1116 int crypto_bignum_legendre(const struct crypto_bignum *a,
1117 const struct crypto_bignum *p)
1120 BIGNUM *exp = NULL, *tmp = NULL;
1123 bnctx = BN_CTX_new();
1130 /* exp = (p-1) / 2 */
1131 !BN_sub(exp, (const BIGNUM *) p, BN_value_one()) ||
1132 !BN_rshift1(exp, exp) ||
1133 !BN_mod_exp(tmp, (const BIGNUM *) a, exp, (const BIGNUM *) p,
1137 if (BN_is_word(tmp, 1))
1139 else if (BN_is_zero(tmp))
1163 struct crypto_ec * crypto_ec_init(int group)
1165 struct crypto_ec *e;
1168 /* Map from IANA registry for IKE D-H groups to OpenSSL NID */
1171 nid = NID_X9_62_prime256v1;
1174 nid = NID_secp384r1;
1177 nid = NID_secp521r1;
1180 nid = NID_X9_62_prime192v1;
1183 nid = NID_secp224r1;
1185 #ifdef NID_brainpoolP224r1
1187 nid = NID_brainpoolP224r1;
1189 #endif /* NID_brainpoolP224r1 */
1190 #ifdef NID_brainpoolP256r1
1192 nid = NID_brainpoolP256r1;
1194 #endif /* NID_brainpoolP256r1 */
1195 #ifdef NID_brainpoolP384r1
1197 nid = NID_brainpoolP384r1;
1199 #endif /* NID_brainpoolP384r1 */
1200 #ifdef NID_brainpoolP512r1
1202 nid = NID_brainpoolP512r1;
1204 #endif /* NID_brainpoolP512r1 */
1209 e = os_zalloc(sizeof(*e));
1213 e->bnctx = BN_CTX_new();
1214 e->group = EC_GROUP_new_by_curve_name(nid);
1215 e->prime = BN_new();
1216 e->order = BN_new();
1219 if (e->group == NULL || e->bnctx == NULL || e->prime == NULL ||
1220 e->order == NULL || e->a == NULL || e->b == NULL ||
1221 !EC_GROUP_get_curve_GFp(e->group, e->prime, e->a, e->b, e->bnctx) ||
1222 !EC_GROUP_get_order(e->group, e->order, e->bnctx)) {
1223 crypto_ec_deinit(e);
1231 void crypto_ec_deinit(struct crypto_ec *e)
1235 BN_clear_free(e->b);
1236 BN_clear_free(e->a);
1237 BN_clear_free(e->order);
1238 BN_clear_free(e->prime);
1239 EC_GROUP_free(e->group);
1240 BN_CTX_free(e->bnctx);
1245 struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e)
1249 return (struct crypto_ec_point *) EC_POINT_new(e->group);
1253 size_t crypto_ec_prime_len(struct crypto_ec *e)
1255 return BN_num_bytes(e->prime);
1259 size_t crypto_ec_prime_len_bits(struct crypto_ec *e)
1261 return BN_num_bits(e->prime);
1265 const struct crypto_bignum * crypto_ec_get_prime(struct crypto_ec *e)
1267 return (const struct crypto_bignum *) e->prime;
1271 const struct crypto_bignum * crypto_ec_get_order(struct crypto_ec *e)
1273 return (const struct crypto_bignum *) e->order;
1277 void crypto_ec_point_deinit(struct crypto_ec_point *p, int clear)
1280 EC_POINT_clear_free((EC_POINT *) p);
1282 EC_POINT_free((EC_POINT *) p);
1286 int crypto_ec_point_to_bin(struct crypto_ec *e,
1287 const struct crypto_ec_point *point, u8 *x, u8 *y)
1289 BIGNUM *x_bn, *y_bn;
1291 int len = BN_num_bytes(e->prime);
1297 EC_POINT_get_affine_coordinates_GFp(e->group, (EC_POINT *) point,
1298 x_bn, y_bn, e->bnctx)) {
1300 crypto_bignum_to_bin((struct crypto_bignum *) x_bn,
1304 crypto_bignum_to_bin((struct crypto_bignum *) y_bn,
1310 BN_clear_free(x_bn);
1311 BN_clear_free(y_bn);
1316 struct crypto_ec_point * crypto_ec_point_from_bin(struct crypto_ec *e,
1321 int len = BN_num_bytes(e->prime);
1323 x = BN_bin2bn(val, len, NULL);
1324 y = BN_bin2bn(val + len, len, NULL);
1325 elem = EC_POINT_new(e->group);
1326 if (x == NULL || y == NULL || elem == NULL) {
1329 EC_POINT_clear_free(elem);
1333 if (!EC_POINT_set_affine_coordinates_GFp(e->group, elem, x, y,
1335 EC_POINT_clear_free(elem);
1342 return (struct crypto_ec_point *) elem;
1346 int crypto_ec_point_add(struct crypto_ec *e, const struct crypto_ec_point *a,
1347 const struct crypto_ec_point *b,
1348 struct crypto_ec_point *c)
1350 return EC_POINT_add(e->group, (EC_POINT *) c, (const EC_POINT *) a,
1351 (const EC_POINT *) b, e->bnctx) ? 0 : -1;
1355 int crypto_ec_point_mul(struct crypto_ec *e, const struct crypto_ec_point *p,
1356 const struct crypto_bignum *b,
1357 struct crypto_ec_point *res)
1359 return EC_POINT_mul(e->group, (EC_POINT *) res, NULL,
1360 (const EC_POINT *) p, (const BIGNUM *) b, e->bnctx)
1365 int crypto_ec_point_invert(struct crypto_ec *e, struct crypto_ec_point *p)
1367 return EC_POINT_invert(e->group, (EC_POINT *) p, e->bnctx) ? 0 : -1;
1371 int crypto_ec_point_solve_y_coord(struct crypto_ec *e,
1372 struct crypto_ec_point *p,
1373 const struct crypto_bignum *x, int y_bit)
1375 if (!EC_POINT_set_compressed_coordinates_GFp(e->group, (EC_POINT *) p,
1376 (const BIGNUM *) x, y_bit,
1378 !EC_POINT_is_on_curve(e->group, (EC_POINT *) p, e->bnctx))
1384 struct crypto_bignum *
1385 crypto_ec_point_compute_y_sqr(struct crypto_ec *e,
1386 const struct crypto_bignum *x)
1388 BIGNUM *tmp, *tmp2, *y_sqr = NULL;
1393 /* y^2 = x^3 + ax + b */
1395 BN_mod_sqr(tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1396 BN_mod_mul(tmp, tmp, (const BIGNUM *) x, e->prime, e->bnctx) &&
1397 BN_mod_mul(tmp2, e->a, (const BIGNUM *) x, e->prime, e->bnctx) &&
1398 BN_mod_add_quick(tmp2, tmp2, tmp, e->prime) &&
1399 BN_mod_add_quick(tmp2, tmp2, e->b, e->prime)) {
1405 BN_clear_free(tmp2);
1407 return (struct crypto_bignum *) y_sqr;
1411 int crypto_ec_point_is_at_infinity(struct crypto_ec *e,
1412 const struct crypto_ec_point *p)
1414 return EC_POINT_is_at_infinity(e->group, (const EC_POINT *) p);
1418 int crypto_ec_point_is_on_curve(struct crypto_ec *e,
1419 const struct crypto_ec_point *p)
1421 return EC_POINT_is_on_curve(e->group, (const EC_POINT *) p,
1426 int crypto_ec_point_cmp(const struct crypto_ec *e,
1427 const struct crypto_ec_point *a,
1428 const struct crypto_ec_point *b)
1430 return EC_POINT_cmp(e->group, (const EC_POINT *) a,
1431 (const EC_POINT *) b, e->bnctx);
1434 #endif /* CONFIG_ECC */