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Diffstat (limited to 'src/cipher.h')
| -rw-r--r-- | src/cipher.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/cipher.h b/src/cipher.h new file mode 100644 index 0000000..0bb3f5f --- /dev/null +++ b/src/cipher.h @@ -0,0 +1,59 @@ +/* + * ľAnytun + * + * ľAnytun is a tiny implementation of SATP. Unlike Anytun which is a full + * featured implementation ľAnytun has no support for multiple connections + * or synchronisation. It is a small single threaded implementation intended + * to act as a client on small platforms. + * The secure anycast tunneling protocol (satp) defines a protocol used + * for communication between any combination of unicast and anycast + * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel + * mode and allows tunneling of every ETHER TYPE protocol (e.g. + * ethernet, ip, arp ...). satp directly includes cryptography and + * message authentication based on the methodes used by SRTP. It is + * intended to deliver a generic, scaleable and secure solution for + * tunneling and relaying of packets of any protocol. + * + * + * Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org> + * + * This file is part of ľAnytun. + * + * ľAnytun is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 3 as + * published by the Free Software Foundation. + * + * ľAnytun is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with ľAnytun. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _CIPHER_H_ +#define _CIPHER_H_ + +enum cipher_type_enum { unknown, null, aes_ctr }; +typedef enum cipher_type_enum cipher_type_t; + +struct cipher_struct { + cipher_type_t type_; + buffer_t key_; + buffer_t salt_; +}; +typedef struct cipher_struct cipher_t; + +void cipher_init(cipher_t** c, const char* type); +void cipher_set_key(cipher_t* c, u_int8_t* key, u_int32_t len); +void cipher_set_salt(cipher_t* c, u_int8_t* salt, u_int32_t len); +void cipher_close(cipher_t** c); + +void cipher_encrypt(cipher_t* c, plain_packet_t* in, encrypted_packet_t* out, seq_nr_t seq_nr, sender_id_t sender_id, mux_t mux); +void cipher_decrypt(cipher_t* c, encrypted_packet_t* in, plain_packet_t* out); + +u_int32_t cipher_null_encrypt(u_int8_t* in, u_int32_t ilen, u_int8_t* out, u_int32_t olen); +u_int32_t cipher_null_decrypt(u_int8_t* in, u_int32_t ilen, u_int8_t* out, u_int32_t olen); + +#endif |