diff options
Diffstat (limited to 'src/crypto/crypto_openssl.c')
| -rw-r--r-- | src/crypto/crypto_openssl.c | 635 |
1 files changed, 547 insertions, 88 deletions
diff --git a/src/crypto/crypto_openssl.c b/src/crypto/crypto_openssl.c index 711e312d0fb0..f158ef43a645 100644 --- a/src/crypto/crypto_openssl.c +++ b/src/crypto/crypto_openssl.c @@ -1,6 +1,6 @@ /* - * WPA Supplicant / wrapper functions for libcrypto - * Copyright (c) 2004-2012, Jouni Malinen <j@w1.fi> + * Wrapper functions for OpenSSL libcrypto + * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi> * * This software may be distributed under the terms of the BSD license. * See README for more details. @@ -19,23 +19,21 @@ #ifdef CONFIG_OPENSSL_CMAC #include <openssl/cmac.h> #endif /* CONFIG_OPENSSL_CMAC */ +#ifdef CONFIG_ECC +#include <openssl/ec.h> +#endif /* CONFIG_ECC */ #include "common.h" #include "wpabuf.h" #include "dh_group5.h" +#include "sha1.h" +#include "sha256.h" +#include "sha384.h" #include "crypto.h" -#if OPENSSL_VERSION_NUMBER < 0x00907000 -#define DES_key_schedule des_key_schedule -#define DES_cblock des_cblock -#define DES_set_key(key, schedule) des_set_key((key), *(schedule)) -#define DES_ecb_encrypt(input, output, ks, enc) \ - des_ecb_encrypt((input), (output), *(ks), (enc)) -#endif /* openssl < 0.9.7 */ - static BIGNUM * get_group5_prime(void) { -#if OPENSSL_VERSION_NUMBER < 0x00908000 +#ifdef OPENSSL_IS_BORINGSSL static const unsigned char RFC3526_PRIME_1536[] = { 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xC9,0x0F,0xDA,0xA2, 0x21,0x68,0xC2,0x34,0xC4,0xC6,0x62,0x8B,0x80,0xDC,0x1C,0xD1, @@ -55,20 +53,11 @@ static BIGNUM * get_group5_prime(void) 0xCA,0x23,0x73,0x27,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, }; return BN_bin2bn(RFC3526_PRIME_1536, sizeof(RFC3526_PRIME_1536), NULL); -#else /* openssl < 0.9.8 */ +#else /* OPENSSL_IS_BORINGSSL */ return get_rfc3526_prime_1536(NULL); -#endif /* openssl < 0.9.8 */ +#endif /* OPENSSL_IS_BORINGSSL */ } -#if OPENSSL_VERSION_NUMBER < 0x00908000 -#ifndef OPENSSL_NO_SHA256 -#ifndef OPENSSL_FIPS -#define NO_SHA256_WRAPPER -#endif -#endif - -#endif /* openssl < 0.9.8 */ - #ifdef OPENSSL_NO_SHA256 #define NO_SHA256_WRAPPER #endif @@ -125,7 +114,7 @@ void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher) } pkey[i] = next | 1; - DES_set_key(&pkey, &ks); + DES_set_key((DES_cblock *) &pkey, &ks); DES_ecb_encrypt((DES_cblock *) clear, (DES_cblock *) cypher, &ks, DES_ENCRYPT); } @@ -194,8 +183,10 @@ static const EVP_CIPHER * aes_get_evp_cipher(size_t keylen) switch (keylen) { case 16: return EVP_aes_128_ecb(); +#ifndef OPENSSL_IS_BORINGSSL case 24: return EVP_aes_192_ecb(); +#endif /* OPENSSL_IS_BORINGSSL */ case 32: return EVP_aes_256_ecb(); } @@ -251,7 +242,7 @@ void aes_encrypt_deinit(void *ctx) "in AES encrypt", len); } EVP_CIPHER_CTX_cleanup(c); - os_free(c); + bin_clear_free(c, sizeof(*c)); } @@ -302,7 +293,34 @@ void aes_decrypt_deinit(void *ctx) "in AES decrypt", len); } EVP_CIPHER_CTX_cleanup(c); - os_free(ctx); + bin_clear_free(c, sizeof(*c)); +} + + +int aes_wrap(const u8 *kek, size_t kek_len, int n, const u8 *plain, u8 *cipher) +{ + AES_KEY actx; + int res; + + if (AES_set_encrypt_key(kek, kek_len << 3, &actx)) + return -1; + res = AES_wrap_key(&actx, NULL, cipher, plain, n * 8); + OPENSSL_cleanse(&actx, sizeof(actx)); + return res <= 0 ? -1 : 0; +} + + +int aes_unwrap(const u8 *kek, size_t kek_len, int n, const u8 *cipher, + u8 *plain) +{ + AES_KEY actx; + int res; + + if (AES_set_decrypt_key(kek, kek_len << 3, &actx)) + return -1; + res = AES_unwrap_key(&actx, NULL, plain, cipher, (n + 1) * 8); + OPENSSL_cleanse(&actx, sizeof(actx)); + return res <= 0 ? -1 : 0; } @@ -335,10 +353,10 @@ int crypto_mod_exp(const u8 *base, size_t base_len, ret = 0; error: - BN_free(bn_base); - BN_free(bn_exp); - BN_free(bn_modulus); - BN_free(bn_result); + BN_clear_free(bn_base); + BN_clear_free(bn_exp); + BN_clear_free(bn_modulus); + BN_clear_free(bn_result); BN_CTX_free(ctx); return ret; } @@ -373,9 +391,11 @@ struct crypto_cipher * crypto_cipher_init(enum crypto_cipher_alg alg, case 16: cipher = EVP_aes_128_cbc(); break; +#ifndef OPENSSL_IS_BORINGSSL case 24: cipher = EVP_aes_192_cbc(); break; +#endif /* OPENSSL_IS_BORINGSSL */ case 32: cipher = EVP_aes_256_cbc(); break; @@ -498,8 +518,8 @@ void * dh5_init(struct wpabuf **priv, struct wpabuf **publ) return dh; err: - wpabuf_free(pubkey); - wpabuf_free(privkey); + wpabuf_clear_free(pubkey); + wpabuf_clear_free(privkey); DH_free(dh); return NULL; } @@ -566,13 +586,13 @@ struct wpabuf * dh5_derive_shared(void *ctx, const struct wpabuf *peer_public, if (keylen < 0) goto err; wpabuf_put(res, keylen); - BN_free(pub_key); + BN_clear_free(pub_key); return res; err: - BN_free(pub_key); - wpabuf_free(res); + BN_clear_free(pub_key); + wpabuf_clear_free(res); return NULL; } @@ -629,7 +649,7 @@ struct crypto_hash * crypto_hash_init(enum crypto_hash_alg alg, const u8 *key, HMAC_Init_ex(&ctx->ctx, key, key_len, md, NULL); #else /* openssl < 0.9.9 */ if (HMAC_Init_ex(&ctx->ctx, key, key_len, md, NULL) != 1) { - os_free(ctx); + bin_clear_free(ctx, sizeof(*ctx)); return NULL; } #endif /* openssl < 0.9.9 */ @@ -655,7 +675,7 @@ int crypto_hash_finish(struct crypto_hash *ctx, u8 *mac, size_t *len) return -2; if (mac == NULL || len == NULL) { - os_free(ctx); + bin_clear_free(ctx, sizeof(*ctx)); return 0; } @@ -667,7 +687,7 @@ int crypto_hash_finish(struct crypto_hash *ctx, u8 *mac, size_t *len) res = HMAC_Final(&ctx->ctx, mac, &mdlen); #endif /* openssl < 0.9.9 */ HMAC_CTX_cleanup(&ctx->ctx); - os_free(ctx); + bin_clear_free(ctx, sizeof(*ctx)); if (res == 1) { *len = mdlen; @@ -678,43 +698,26 @@ int crypto_hash_finish(struct crypto_hash *ctx, u8 *mac, size_t *len) } -int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len, - int iterations, u8 *buf, size_t buflen) -{ -#if OPENSSL_VERSION_NUMBER < 0x00908000 - if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase), - (unsigned char *) ssid, - ssid_len, 4096, buflen, buf) != 1) - return -1; -#else /* openssl < 0.9.8 */ - if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase), ssid, - ssid_len, 4096, buflen, buf) != 1) - return -1; -#endif /* openssl < 0.9.8 */ - return 0; -} - - -int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem, - const u8 *addr[], const size_t *len, u8 *mac) +static int openssl_hmac_vector(const EVP_MD *type, const u8 *key, + size_t key_len, size_t num_elem, + const u8 *addr[], const size_t *len, u8 *mac, + unsigned int mdlen) { HMAC_CTX ctx; size_t i; - unsigned int mdlen; int res; HMAC_CTX_init(&ctx); #if OPENSSL_VERSION_NUMBER < 0x00909000 - HMAC_Init_ex(&ctx, key, key_len, EVP_sha1(), NULL); + HMAC_Init_ex(&ctx, key, key_len, type, NULL); #else /* openssl < 0.9.9 */ - if (HMAC_Init_ex(&ctx, key, key_len, EVP_sha1(), NULL) != 1) + if (HMAC_Init_ex(&ctx, key, key_len, type, NULL) != 1) return -1; #endif /* openssl < 0.9.9 */ for (i = 0; i < num_elem; i++) HMAC_Update(&ctx, addr[i], len[i]); - mdlen = 20; #if OPENSSL_VERSION_NUMBER < 0x00909000 HMAC_Final(&ctx, mac, &mdlen); res = 1; @@ -727,6 +730,43 @@ int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem, } +#ifndef CONFIG_FIPS + +int hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem, + const u8 *addr[], const size_t *len, u8 *mac) +{ + return openssl_hmac_vector(EVP_md5(), key ,key_len, num_elem, addr, len, + mac, 16); +} + + +int hmac_md5(const u8 *key, size_t key_len, const u8 *data, size_t data_len, + u8 *mac) +{ + return hmac_md5_vector(key, key_len, 1, &data, &data_len, mac); +} + +#endif /* CONFIG_FIPS */ + + +int pbkdf2_sha1(const char *passphrase, const u8 *ssid, size_t ssid_len, + int iterations, u8 *buf, size_t buflen) +{ + if (PKCS5_PBKDF2_HMAC_SHA1(passphrase, os_strlen(passphrase), ssid, + ssid_len, iterations, buflen, buf) != 1) + return -1; + return 0; +} + + +int hmac_sha1_vector(const u8 *key, size_t key_len, size_t num_elem, + const u8 *addr[], const size_t *len, u8 *mac) +{ + return openssl_hmac_vector(EVP_sha1(), key, key_len, num_elem, addr, + len, mac, 20); +} + + int hmac_sha1(const u8 *key, size_t key_len, const u8 *data, size_t data_len, u8 *mac) { @@ -739,42 +779,37 @@ int hmac_sha1(const u8 *key, size_t key_len, const u8 *data, size_t data_len, int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac) { - HMAC_CTX ctx; - size_t i; - unsigned int mdlen; - int res; + return openssl_hmac_vector(EVP_sha256(), key, key_len, num_elem, addr, + len, mac, 32); +} - HMAC_CTX_init(&ctx); -#if OPENSSL_VERSION_NUMBER < 0x00909000 - HMAC_Init_ex(&ctx, key, key_len, EVP_sha256(), NULL); -#else /* openssl < 0.9.9 */ - if (HMAC_Init_ex(&ctx, key, key_len, EVP_sha256(), NULL) != 1) - return -1; -#endif /* openssl < 0.9.9 */ - for (i = 0; i < num_elem; i++) - HMAC_Update(&ctx, addr[i], len[i]); +int hmac_sha256(const u8 *key, size_t key_len, const u8 *data, + size_t data_len, u8 *mac) +{ + return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac); +} - mdlen = 32; -#if OPENSSL_VERSION_NUMBER < 0x00909000 - HMAC_Final(&ctx, mac, &mdlen); - res = 1; -#else /* openssl < 0.9.9 */ - res = HMAC_Final(&ctx, mac, &mdlen); -#endif /* openssl < 0.9.9 */ - HMAC_CTX_cleanup(&ctx); +#endif /* CONFIG_SHA256 */ - return res == 1 ? 0 : -1; + +#ifdef CONFIG_SHA384 + +int hmac_sha384_vector(const u8 *key, size_t key_len, size_t num_elem, + const u8 *addr[], const size_t *len, u8 *mac) +{ + return openssl_hmac_vector(EVP_sha384(), key, key_len, num_elem, addr, + len, mac, 32); } -int hmac_sha256(const u8 *key, size_t key_len, const u8 *data, +int hmac_sha384(const u8 *key, size_t key_len, const u8 *data, size_t data_len, u8 *mac) { - return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac); + return hmac_sha384_vector(key, key_len, 1, &data, &data_len, mac); } -#endif /* CONFIG_SHA256 */ +#endif /* CONFIG_SHA384 */ int crypto_get_random(void *buf, size_t len) @@ -786,8 +821,8 @@ int crypto_get_random(void *buf, size_t len) #ifdef CONFIG_OPENSSL_CMAC -int omac1_aes_128_vector(const u8 *key, size_t num_elem, - const u8 *addr[], const size_t *len, u8 *mac) +int omac1_aes_vector(const u8 *key, size_t key_len, size_t num_elem, + const u8 *addr[], const size_t *len, u8 *mac) { CMAC_CTX *ctx; int ret = -1; @@ -797,8 +832,15 @@ int omac1_aes_128_vector(const u8 *key, size_t num_elem, if (ctx == NULL) return -1; - if (!CMAC_Init(ctx, key, 16, EVP_aes_128_cbc(), NULL)) + if (key_len == 32) { + if (!CMAC_Init(ctx, key, 32, EVP_aes_256_cbc(), NULL)) + goto fail; + } else if (key_len == 16) { + if (!CMAC_Init(ctx, key, 16, EVP_aes_128_cbc(), NULL)) + goto fail; + } else { goto fail; + } for (i = 0; i < num_elem; i++) { if (!CMAC_Update(ctx, addr[i], len[i])) goto fail; @@ -813,8 +855,425 @@ fail: } +int omac1_aes_128_vector(const u8 *key, size_t num_elem, + const u8 *addr[], const size_t *len, u8 *mac) +{ + return omac1_aes_vector(key, 16, num_elem, addr, len, mac); +} + + int omac1_aes_128(const u8 *key, const u8 *data, size_t data_len, u8 *mac) { return omac1_aes_128_vector(key, 1, &data, &data_len, mac); } + + +int omac1_aes_256(const u8 *key, const u8 *data, size_t data_len, u8 *mac) +{ + return omac1_aes_vector(key, 32, 1, &data, &data_len, mac); +} #endif /* CONFIG_OPENSSL_CMAC */ + + +struct crypto_bignum * crypto_bignum_init(void) +{ + return (struct crypto_bignum *) BN_new(); +} + + +struct crypto_bignum * crypto_bignum_init_set(const u8 *buf, size_t len) +{ + BIGNUM *bn = BN_bin2bn(buf, len, NULL); + return (struct crypto_bignum *) bn; +} + + +void crypto_bignum_deinit(struct crypto_bignum *n, int clear) +{ + if (clear) + BN_clear_free((BIGNUM *) n); + else + BN_free((BIGNUM *) n); +} + + +int crypto_bignum_to_bin(const struct crypto_bignum *a, + u8 *buf, size_t buflen, size_t padlen) +{ + int num_bytes, offset; + + if (padlen > buflen) + return -1; + + num_bytes = BN_num_bytes((const BIGNUM *) a); + if ((size_t) num_bytes > buflen) + return -1; + if (padlen > (size_t) num_bytes) + offset = padlen - num_bytes; + else + offset = 0; + + os_memset(buf, 0, offset); + BN_bn2bin((const BIGNUM *) a, buf + offset); + + return num_bytes + offset; +} + + +int crypto_bignum_add(const struct crypto_bignum *a, + const struct crypto_bignum *b, + struct crypto_bignum *c) +{ + return BN_add((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ? + 0 : -1; +} + + +int crypto_bignum_mod(const struct crypto_bignum *a, + const struct crypto_bignum *b, + struct crypto_bignum *c) +{ + int res; + BN_CTX *bnctx; + + bnctx = BN_CTX_new(); + if (bnctx == NULL) + return -1; + res = BN_mod((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b, + bnctx); + BN_CTX_free(bnctx); + + return res ? 0 : -1; +} + + +int crypto_bignum_exptmod(const struct crypto_bignum *a, + const struct crypto_bignum *b, + const struct crypto_bignum *c, + struct crypto_bignum *d) +{ + int res; + BN_CTX *bnctx; + + bnctx = BN_CTX_new(); + if (bnctx == NULL) + return -1; + res = BN_mod_exp((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b, + (const BIGNUM *) c, bnctx); + BN_CTX_free(bnctx); + + return res ? 0 : -1; +} + + +int crypto_bignum_inverse(const struct crypto_bignum *a, + const struct crypto_bignum *b, + struct crypto_bignum *c) +{ + BIGNUM *res; + BN_CTX *bnctx; + + bnctx = BN_CTX_new(); + if (bnctx == NULL) + return -1; + res = BN_mod_inverse((BIGNUM *) c, (const BIGNUM *) a, + (const BIGNUM *) b, bnctx); + BN_CTX_free(bnctx); + + return res ? 0 : -1; +} + + +int crypto_bignum_sub(const struct crypto_bignum *a, + const struct crypto_bignum *b, + struct crypto_bignum *c) +{ + return BN_sub((BIGNUM *) c, (const BIGNUM *) a, (const BIGNUM *) b) ? + 0 : -1; +} + + +int crypto_bignum_div(const struct crypto_bignum *a, + const struct crypto_bignum *b, + struct crypto_bignum *c) +{ + int res; + + BN_CTX *bnctx; + + bnctx = BN_CTX_new(); + if (bnctx == NULL) + return -1; + res = BN_div((BIGNUM *) c, NULL, (const BIGNUM *) a, + (const BIGNUM *) b, bnctx); + BN_CTX_free(bnctx); + + return res ? 0 : -1; +} + + +int crypto_bignum_mulmod(const struct crypto_bignum *a, + const struct crypto_bignum *b, + const struct crypto_bignum *c, + struct crypto_bignum *d) +{ + int res; + + BN_CTX *bnctx; + + bnctx = BN_CTX_new(); + if (bnctx == NULL) + return -1; + res = BN_mod_mul((BIGNUM *) d, (const BIGNUM *) a, (const BIGNUM *) b, + (const BIGNUM *) c, bnctx); + BN_CTX_free(bnctx); + + return res ? 0 : -1; +} + + +int crypto_bignum_cmp(const struct crypto_bignum *a, + const struct crypto_bignum *b) +{ + return BN_cmp((const BIGNUM *) a, (const BIGNUM *) b); +} + + +int crypto_bignum_bits(const struct crypto_bignum *a) +{ + return BN_num_bits((const BIGNUM *) a); +} + + +int crypto_bignum_is_zero(const struct crypto_bignum *a) +{ + return BN_is_zero((const BIGNUM *) a); +} + + +int crypto_bignum_is_one(const struct crypto_bignum *a) +{ + return BN_is_one((const BIGNUM *) a); +} + + +#ifdef CONFIG_ECC + +struct crypto_ec { + EC_GROUP *group; + BN_CTX *bnctx; + BIGNUM *prime; + BIGNUM *order; +}; + +struct crypto_ec * crypto_ec_init(int group) +{ + struct crypto_ec *e; + int nid; + + /* Map from IANA registry for IKE D-H groups to OpenSSL NID */ + switch (group) { + case 19: + nid = NID_X9_62_prime256v1; + break; + case 20: + nid = NID_secp384r1; + break; + case 21: + nid = NID_secp521r1; + break; + case 25: + nid = NID_X9_62_prime192v1; + break; + case 26: + nid = NID_secp224r1; + break; + default: + return NULL; + } + + e = os_zalloc(sizeof(*e)); + if (e == NULL) + return NULL; + + e->bnctx = BN_CTX_new(); + e->group = EC_GROUP_new_by_curve_name(nid); + e->prime = BN_new(); + e->order = BN_new(); + if (e->group == NULL || e->bnctx == NULL || e->prime == NULL || + e->order == NULL || + !EC_GROUP_get_curve_GFp(e->group, e->prime, NULL, NULL, e->bnctx) || + !EC_GROUP_get_order(e->group, e->order, e->bnctx)) { + crypto_ec_deinit(e); + e = NULL; + } + + return e; +} + + +void crypto_ec_deinit(struct crypto_ec *e) +{ + if (e == NULL) + return; + BN_clear_free(e->order); + BN_clear_free(e->prime); + EC_GROUP_free(e->group); + BN_CTX_free(e->bnctx); + os_free(e); +} + + +struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e) +{ + if (e == NULL) + return NULL; + return (struct crypto_ec_point *) EC_POINT_new(e->group); +} + + +size_t crypto_ec_prime_len(struct crypto_ec *e) +{ + return BN_num_bytes(e->prime); +} + + +size_t crypto_ec_prime_len_bits(struct crypto_ec *e) +{ + return BN_num_bits(e->prime); +} + + +const struct crypto_bignum * crypto_ec_get_prime(struct crypto_ec *e) +{ + return (const struct crypto_bignum *) e->prime; +} + + +const struct crypto_bignum * crypto_ec_get_order(struct crypto_ec *e) +{ + return (const struct crypto_bignum *) e->order; +} + + +void crypto_ec_point_deinit(struct crypto_ec_point *p, int clear) +{ + if (clear) + EC_POINT_clear_free((EC_POINT *) p); + else + EC_POINT_free((EC_POINT *) p); +} + + +int crypto_ec_point_to_bin(struct crypto_ec *e, + const struct crypto_ec_point *point, u8 *x, u8 *y) +{ + BIGNUM *x_bn, *y_bn; + int ret = -1; + int len = BN_num_bytes(e->prime); + + x_bn = BN_new(); + y_bn = BN_new(); + + if (x_bn && y_bn && + EC_POINT_get_affine_coordinates_GFp(e->group, (EC_POINT *) point, + x_bn, y_bn, e->bnctx)) { + if (x) { + crypto_bignum_to_bin((struct crypto_bignum *) x_bn, + x, len, len); + } + if (y) { + crypto_bignum_to_bin((struct crypto_bignum *) y_bn, + y, len, len); + } + ret = 0; + } + + BN_clear_free(x_bn); + BN_clear_free(y_bn); + return ret; +} + + +struct crypto_ec_point * crypto_ec_point_from_bin(struct crypto_ec *e, + const u8 *val) +{ + BIGNUM *x, *y; + EC_POINT *elem; + int len = BN_num_bytes(e->prime); + + x = BN_bin2bn(val, len, NULL); + y = BN_bin2bn(val + len, len, NULL); + elem = EC_POINT_new(e->group); + if (x == NULL || y == NULL || elem == NULL) { + BN_clear_free(x); + BN_clear_free(y); + EC_POINT_clear_free(elem); + return NULL; + } + + if (!EC_POINT_set_affine_coordinates_GFp(e->group, elem, x, y, + e->bnctx)) { + EC_POINT_clear_free(elem); + elem = NULL; + } + + BN_clear_free(x); + BN_clear_free(y); + + return (struct crypto_ec_point *) elem; +} + + +int crypto_ec_point_add(struct crypto_ec *e, const struct crypto_ec_point *a, + const struct crypto_ec_point *b, + struct crypto_ec_point *c) +{ + return EC_POINT_add(e->group, (EC_POINT *) c, (const EC_POINT *) a, + (const EC_POINT *) b, e->bnctx) ? 0 : -1; +} + + +int crypto_ec_point_mul(struct crypto_ec *e, const struct crypto_ec_point *p, + const struct crypto_bignum *b, + struct crypto_ec_point *res) +{ + return EC_POINT_mul(e->group, (EC_POINT *) res, NULL, + (const EC_POINT *) p, (const BIGNUM *) b, e->bnctx) + ? 0 : -1; +} + + +int crypto_ec_point_invert(struct crypto_ec *e, struct crypto_ec_point *p) +{ + return EC_POINT_invert(e->group, (EC_POINT *) p, e->bnctx) ? 0 : -1; +} + + +int crypto_ec_point_solve_y_coord(struct crypto_ec *e, + struct crypto_ec_point *p, + const struct crypto_bignum *x, int y_bit) +{ + if (!EC_POINT_set_compressed_coordinates_GFp(e->group, (EC_POINT *) p, + (const BIGNUM *) x, y_bit, + e->bnctx) || + !EC_POINT_is_on_curve(e->group, (EC_POINT *) p, e->bnctx)) + return -1; + return 0; +} + + +int crypto_ec_point_is_at_infinity(struct crypto_ec *e, + const struct crypto_ec_point *p) +{ + return EC_POINT_is_at_infinity(e->group, (const EC_POINT *) p); +} + + +int crypto_ec_point_is_on_curve(struct crypto_ec *e, + const struct crypto_ec_point *p) +{ + return EC_POINT_is_on_curve(e->group, (const EC_POINT *) p, e->bnctx); +} + +#endif /* CONFIG_ECC */ |