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usr / src / contrib / wpa / src / crypto /

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📄 aes-cbc.c(1.93 KB)
📄 aes-ccm.c(4.92 KB)
📄 aes-ctr.c(1.64 KB)
📄 aes-eax.c(3.24 KB)
📄 aes-encblock.c(704 B)
📄 aes-gcm.c(6.47 KB)
📄 aes-internal-dec.c(3.64 KB)
📄 aes-internal-enc.c(2.66 KB)
📄 aes-internal.c(41.23 KB)
📄 aes-omac1.c(4.46 KB)
📄 aes-siv.c(4.06 KB)
📄 aes-unwrap.c(1.78 KB)
📄 aes-wrap.c(1.62 KB)
📄 aes.h(548 B)
📄 aes_i.h(4.16 KB)
📄 aes_siv.h(565 B)
📄 aes_wrap.h(2.91 KB)
📄 crypto.h(28.61 KB)
📄 crypto_gnutls.c(11.42 KB)
📄 crypto_internal-cipher.c(5.08 KB)
📄 crypto_internal-modexp.c(2.95 KB)
📄 crypto_internal-rsa.c(2.81 KB)
📄 crypto_internal.c(6.84 KB)
📄 crypto_libtomcrypt.c(15.07 KB)
📄 crypto_linux.c(21.77 KB)
📄 crypto_module_tests.c(61.19 KB)
📄 crypto_nettle.c(9.7 KB)
📄 crypto_none.c(461 B)
📄 crypto_openssl.c(44.34 KB)
📄 crypto_wolfssl.c(33.91 KB)
📄 des-internal.c(14.83 KB)
📄 des_i.h(709 B)
📄 dh_group5.c(806 B)
📄 dh_group5.h(556 B)
📄 dh_groups.c(54.26 KB)
📄 dh_groups.h(692 B)
📄 fips_prf_internal.c(1.37 KB)
📄 fips_prf_openssl.c(2.05 KB)
📄 fips_prf_wolfssl.c(1.75 KB)
📄 md4-internal.c(7.91 KB)
📄 md5-internal.c(8.79 KB)
📄 md5.c(2.64 KB)
📄 md5.h(505 B)
📄 md5_i.h(516 B)
📄 milenage.c(9.5 KB)
📄 milenage.h(1019 B)
📄 ms_funcs.c(16.16 KB)
📄 ms_funcs.h(2.41 KB)
📄 random.c(11.66 KB)
📄 random.h(855 B)
📄 rc4.c(1009 B)
📄 sha1-internal.c(8.93 KB)
📄 sha1-pbkdf2.c(2.34 KB)
📄 sha1-prf.c(1.58 KB)
📄 sha1-tlsprf.c(2.69 KB)
📄 sha1-tprf.c(1.75 KB)
📄 sha1.c(2.69 KB)
📄 sha1.h(1.03 KB)
📄 sha1_i.h(590 B)
📄 sha256-internal.c(6 KB)
📄 sha256-kdf.c(2.08 KB)
📄 sha256-prf.c(2.84 KB)
📄 sha256-tlsprf.c(1.81 KB)
📄 sha256.c(2.64 KB)
📄 sha256.h(1.07 KB)
📄 sha256_i.h(584 B)
📄 sha384-internal.c(2.17 KB)
📄 sha384-kdf.c(2.08 KB)
📄 sha384-prf.c(2.85 KB)
📄 sha384.c(2.63 KB)
📄 sha384.h(949 B)
📄 sha384_i.h(573 B)
📄 sha512-internal.c(7.71 KB)
📄 sha512-kdf.c(2.08 KB)
📄 sha512-prf.c(2.85 KB)
📄 sha512.c(2.63 KB)
📄 sha512.h(949 B)
📄 sha512_i.h(591 B)
📄 tls.h(23.71 KB)
📄 tls_gnutls.c(44.97 KB)
📄 tls_internal.c(18.93 KB)
📄 tls_none.c(3.9 KB)
📄 tls_openssl.c(137.99 KB)
📄 tls_openssl.h(477 B)
📄 tls_openssl_ocsp.c(20.52 KB)
📄 tls_wolfssl.c(51.88 KB)

Editing: crypto_internal-modexp.c

/*
 * Crypto wrapper for internal crypto implementation - modexp
 * Copyright (c) 2006-2009, Jouni Malinen <j@w1.fi>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "includes.h"

#include "common.h"
#include "tls/bignum.h"
#include "crypto.h"

int crypto_dh_init(u8 generator, const u8 *prime, size_t prime_len, u8 *privkey,
		   u8 *pubkey)
{
	size_t pubkey_len, pad;

if (os_get_random(privkey, prime_len) < 0)
		return -1;
	if (os_memcmp(privkey, prime, prime_len) > 0) {
		/* Make sure private value is smaller than prime */
		privkey[0] = 0;
	}

pubkey_len = prime_len;
	if (crypto_mod_exp(&generator, 1, privkey, prime_len, prime, prime_len,
			   pubkey, &pubkey_len) < 0)
		return -1;
	if (pubkey_len < prime_len) {
		pad = prime_len - pubkey_len;
		os_memmove(pubkey + pad, pubkey, pubkey_len);
		os_memset(pubkey, 0, pad);
	}

return 0;
}

int crypto_dh_derive_secret(u8 generator, const u8 *prime, size_t prime_len,
			    const u8 *order, size_t order_len,
			    const u8 *privkey, size_t privkey_len,
			    const u8 *pubkey, size_t pubkey_len,
			    u8 *secret, size_t *len)
{
	struct bignum *pub;
	int res = -1;

if (pubkey_len > prime_len ||
	    (pubkey_len == prime_len &&
	     os_memcmp(pubkey, prime, prime_len) >= 0))
		return -1;

pub = bignum_init();
	if (!pub || bignum_set_unsigned_bin(pub, pubkey, pubkey_len) < 0 ||
	    bignum_cmp_d(pub, 1) <= 0)
		goto fail;

if (order) {
		struct bignum *p, *q, *tmp;
		int failed;

/* verify: pubkey^q == 1 mod p */
		p = bignum_init();
		q = bignum_init();
		tmp = bignum_init();
		failed = !p || !q || !tmp ||
			bignum_set_unsigned_bin(p, prime, prime_len) < 0 ||
			bignum_set_unsigned_bin(q, order, order_len) < 0 ||
			bignum_exptmod(pub, q, p, tmp) < 0 ||
			bignum_cmp_d(tmp, 1) != 0;
		bignum_deinit(p);
		bignum_deinit(q);
		bignum_deinit(tmp);
		if (failed)
			goto fail;
	}

res = crypto_mod_exp(pubkey, pubkey_len, privkey, privkey_len,
			     prime, prime_len, secret, len);
fail:
	bignum_deinit(pub);
	return res;
}

int crypto_mod_exp(const u8 *base, size_t base_len,
		   const u8 *power, size_t power_len,
		   const u8 *modulus, size_t modulus_len,
		   u8 *result, size_t *result_len)
{
	struct bignum *bn_base, *bn_exp, *bn_modulus, *bn_result;
	int ret = -1;

bn_base = bignum_init();
	bn_exp = bignum_init();
	bn_modulus = bignum_init();
	bn_result = bignum_init();

if (bn_base == NULL || bn_exp == NULL || bn_modulus == NULL ||
	    bn_result == NULL)
		goto error;

if (bignum_set_unsigned_bin(bn_base, base, base_len) < 0 ||
	    bignum_set_unsigned_bin(bn_exp, power, power_len) < 0 ||
	    bignum_set_unsigned_bin(bn_modulus, modulus, modulus_len) < 0)
		goto error;

if (bignum_exptmod(bn_base, bn_exp, bn_modulus, bn_result) < 0)
		goto error;

ret = bignum_get_unsigned_bin(bn_result, result, result_len);

error:
	bignum_deinit(bn_base);
	bignum_deinit(bn_exp);
	bignum_deinit(bn_modulus);
	bignum_deinit(bn_result);
	return ret;
}

003 File Manager

Editing: crypto_internal-modexp.c

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