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Current Path: /usr/src/contrib/wpa/src/crypto

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

📁 ..
📄 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: aes-eax.c

/*
 * AES-128 EAX
 *
 * Copyright (c) 2003-2007, 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 "aes.h"
#include "aes_wrap.h"

/**
 * aes_128_eax_encrypt - AES-128 EAX mode encryption
 * @key: Key for encryption (16 bytes)
 * @nonce: Nonce for counter mode
 * @nonce_len: Nonce length in bytes
 * @hdr: Header data to be authenticity protected
 * @hdr_len: Length of the header data bytes
 * @data: Data to encrypt in-place
 * @data_len: Length of data in bytes
 * @tag: 16-byte tag value
 * Returns: 0 on success, -1 on failure
 */
int aes_128_eax_encrypt(const u8 *key, const u8 *nonce, size_t nonce_len,
			const u8 *hdr, size_t hdr_len,
			u8 *data, size_t data_len, u8 *tag)
{
	u8 *buf;
	size_t buf_len;
	u8 nonce_mac[AES_BLOCK_SIZE], hdr_mac[AES_BLOCK_SIZE],
		data_mac[AES_BLOCK_SIZE];
	int i, ret = -1;

if (nonce_len > data_len)
		buf_len = nonce_len;
	else
		buf_len = data_len;
	if (hdr_len > buf_len)
		buf_len = hdr_len;
	buf_len += 16;

buf = os_malloc(buf_len);
	if (buf == NULL)
		return -1;

os_memset(buf, 0, 15);

buf[15] = 0;
	os_memcpy(buf + 16, nonce, nonce_len);
	if (omac1_aes_128(key, buf, 16 + nonce_len, nonce_mac))
		goto fail;

buf[15] = 1;
	os_memcpy(buf + 16, hdr, hdr_len);
	if (omac1_aes_128(key, buf, 16 + hdr_len, hdr_mac))
		goto fail;

if (aes_128_ctr_encrypt(key, nonce_mac, data, data_len))
		goto fail;
	buf[15] = 2;
	os_memcpy(buf + 16, data, data_len);
	if (omac1_aes_128(key, buf, 16 + data_len, data_mac))
		goto fail;

for (i = 0; i < AES_BLOCK_SIZE; i++)
		tag[i] = nonce_mac[i] ^ data_mac[i] ^ hdr_mac[i];

ret = 0;
fail:
	bin_clear_free(buf, buf_len);

return ret;
}

/**
 * aes_128_eax_decrypt - AES-128 EAX mode decryption
 * @key: Key for decryption (16 bytes)
 * @nonce: Nonce for counter mode
 * @nonce_len: Nonce length in bytes
 * @hdr: Header data to be authenticity protected
 * @hdr_len: Length of the header data bytes
 * @data: Data to encrypt in-place
 * @data_len: Length of data in bytes
 * @tag: 16-byte tag value
 * Returns: 0 on success, -1 on failure, -2 if tag does not match
 */
int aes_128_eax_decrypt(const u8 *key, const u8 *nonce, size_t nonce_len,
			const u8 *hdr, size_t hdr_len,
			u8 *data, size_t data_len, const u8 *tag)
{
	u8 *buf;
	size_t buf_len;
	u8 nonce_mac[AES_BLOCK_SIZE], hdr_mac[AES_BLOCK_SIZE],
		data_mac[AES_BLOCK_SIZE];
	int i;

if (nonce_len > data_len)
		buf_len = nonce_len;
	else
		buf_len = data_len;
	if (hdr_len > buf_len)
		buf_len = hdr_len;
	buf_len += 16;

buf = os_malloc(buf_len);
	if (buf == NULL)
		return -1;

os_memset(buf, 0, 15);

buf[15] = 0;
	os_memcpy(buf + 16, nonce, nonce_len);
	if (omac1_aes_128(key, buf, 16 + nonce_len, nonce_mac)) {
		os_free(buf);
		return -1;
	}

buf[15] = 1;
	os_memcpy(buf + 16, hdr, hdr_len);
	if (omac1_aes_128(key, buf, 16 + hdr_len, hdr_mac)) {
		os_free(buf);
		return -1;
	}

buf[15] = 2;
	os_memcpy(buf + 16, data, data_len);
	if (omac1_aes_128(key, buf, 16 + data_len, data_mac)) {
		os_free(buf);
		return -1;
	}

os_free(buf);

for (i = 0; i < AES_BLOCK_SIZE; i++) {
		if (tag[i] != (nonce_mac[i] ^ data_mac[i] ^ hdr_mac[i]))
			return -2;
	}

return aes_128_ctr_encrypt(key, nonce_mac, data, data_len);
}

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Editing: aes-eax.c

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