diff options
Diffstat (limited to 'contrib/wpa_supplicant/crypto.h')
| -rw-r--r-- | contrib/wpa_supplicant/crypto.h | 117 |
1 files changed, 116 insertions, 1 deletions
diff --git a/contrib/wpa_supplicant/crypto.h b/contrib/wpa_supplicant/crypto.h index 3e1a0e5..e664861 100644 --- a/contrib/wpa_supplicant/crypto.h +++ b/contrib/wpa_supplicant/crypto.h @@ -1,8 +1,123 @@ +/* + * WPA Supplicant / wrapper functions for crypto libraries + * Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.fi> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Alternatively, this software may be distributed under the terms of BSD + * license. + * + * See README and COPYING for more details. + * + * This file defines the cryptographic functions that need to be implemented + * for wpa_supplicant and hostapd. When TLS is not used, internal + * implementation of MD5, SHA1, and AES is used and no external libraries are + * required. When TLS is enabled (e.g., by enabling EAP-TLS or EAP-PEAP), the + * crypto library used by the TLS implementation is expected to be used for + * non-TLS needs, too, in order to save space by not implementing these + * functions twice. + * + * Wrapper code for using each crypto library is in its own file (crypto*.c) + * and one of these files is build and linked in to provide the functions + * defined here. + */ + #ifndef CRYPTO_H #define CRYPTO_H +/** + * md4_vector - MD4 hash for data vector + * @num_elem: Number of elements in the data vector + * @addr: Pointers to the data areas + * @len: Lengths of the data blocks + * @mac: Buffer for the hash + */ void md4_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac); -void md4(const u8 *addr, size_t len, u8 *mac); + +/** + * md5_vector - MD5 hash for data vector + * @num_elem: Number of elements in the data vector + * @addr: Pointers to the data areas + * @len: Lengths of the data blocks + * @mac: Buffer for the hash + */ +void md5_vector(size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac); + +/** + * sha1_vector - SHA-1 hash for data vector + * @num_elem: Number of elements in the data vector + * @addr: Pointers to the data areas + * @len: Lengths of the data blocks + * @mac: Buffer for the hash + */ +void sha1_vector(size_t num_elem, const u8 *addr[], const size_t *len, + u8 *mac); + +/** + * sha1_transform - Perform one SHA-1 transform step + * @state: SHA-1 state + * @data: Input data for the SHA-1 transform + * + * This function is used to implement random number generation specified in + * NIST FIPS Publication 186-2 for EAP-SIM. This PRF uses a function that is + * similar to SHA-1, but has different message padding and as such, access to + * just part of the SHA-1 is needed. + */ +void sha1_transform(u8 *state, const u8 data[64]); + +/** + * des_encrypt - Encrypt one block with DES + * @clear: 8 octets (in) + * @key: 7 octets (in) (no parity bits included) + * @cypher: 8 octets (out) + */ void des_encrypt(const u8 *clear, const u8 *key, u8 *cypher); +/** + * aes_encrypt_init - Initialize AES for encryption + * @key: Encryption key + * @len: Key length in bytes (usually 16, i.e., 128 bits) + * Returns: Pointer to context data or %NULL on failure + */ +void * aes_encrypt_init(const u8 *key, size_t len); + +/** + * aes_encrypt - Encrypt one AES block + * @ctx: Context pointer from aes_encrypt_init() + * @plain: Plaintext data to be encrypted (16 bytes) + * @crypt: Buffer for the encrypted data (16 bytes) + */ +void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt); + +/** + * aes_encrypt_deinit - Deinitialize AES encryption + * @ctx: Context pointer from aes_encrypt_init() + */ +void aes_encrypt_deinit(void *ctx); + +/** + * aes_decrypt_init - Initialize AES for decryption + * @key: Decryption key + * @len: Key length in bytes (usually 16, i.e., 128 bits) + * Returns: Pointer to context data or %NULL on failure + */ +void * aes_decrypt_init(const u8 *key, size_t len); + +/** + * aes_decrypt - Decrypt one AES block + * @ctx: Context pointer from aes_encrypt_init() + * @crypt: Encrypted data (16 bytes) + * @plain: Buffer for the decrypted data (16 bytes) + */ +void aes_decrypt(void *ctx, const u8 *crypt, u8 *plain); + +/** + * aes_decrypt_deinit - Deinitialize AES decryption + * @ctx: Context pointer from aes_encrypt_init() + */ +void aes_decrypt_deinit(void *ctx); + + #endif /* CRYPTO_H */ |
