Remove default.jpg.

[paraslash.git] / crypt.h

diff --git a/crypt.h b/crypt.h
index 1f7b8a867b1aea2a52c53f03275372b4fca849d9..8edff4130a1386689108400af496a980b94e2fa7 100644 (file)
--- a/crypt.h
+++ b/crypt.h
@@ -1,37 +1,45 @@
 /*
 /*

- * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>

  *
  *

- *     This program is free software; you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation; either version 2 of the License, or
- *     (at your option) any later version.
- *
- *     This program 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 this program; if not, write to the Free Software
- *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.

  */
 
 /** \file crypt.h prototypes for the RSA crypt functions */
 
 #include <openssl/pem.h>
  */
 
 /** \file crypt.h prototypes for the RSA crypt functions */
 
 #include <openssl/pem.h>

-int para_decrypt_challenge(char *key_file, long unsigned *challenge_nr,
-       unsigned char *buf, int rsa_inlen);
-int para_encrypt_challenge(RSA* rsa, long unsigned challenge_nr,
-       unsigned char *outbuf);
-int para_encrypt_buffer(RSA* rsa, unsigned char *inbuf, const unsigned len,
+int para_encrypt_buffer(RSA* rsa, unsigned char *inbuf, unsigned len,

        unsigned char *outbuf);
 int para_decrypt_buffer(char *key_file, unsigned char *outbuf, unsigned char *inbuf,
        unsigned char *outbuf);
 int para_decrypt_buffer(char *key_file, unsigned char *outbuf, unsigned char *inbuf,

-       int rsa_inlen);
+       unsigned rsa_inlen);

 int get_rsa_key(char *key_file, RSA **rsa, int private);
 
 void rsa_free(RSA *rsa);
 int get_rsa_key(char *key_file, RSA **rsa, int private);
 
 void rsa_free(RSA *rsa);

+void get_random_bytes_or_die(unsigned char *buf, int num);
+void init_random_seed_or_die(void);
+
+/**
+ * Used on the server-side for client-server communication encryption.
+ *
+ * The traffic between (the forked child of) para_server and the remote
+ * client process is crypted by a RC4 session key. This structure contains
+ * the RC4 keys and the file descriptor for which these keys should be used.
+ */
+struct rc4_context {
+       /** The socket file descriptor. */
+       int fd;
+       /** Key used for sending data. */
+       RC4_KEY recv_key;
+       /** Key used for receiving data. */
+       RC4_KEY send_key;
+};
+int rc4_send_bin_buffer(struct rc4_context *rc4c, const char *buf, size_t len);
+int rc4_send_buffer(struct rc4_context *rc4c, const char *buf);
+__printf_2_3 int rc4_send_va_buffer(struct rc4_context *rc4c, const char *fmt, ...);
+int rc4_recv_bin_buffer(struct rc4_context *rcc, char *buf, size_t size);
+int rc4_recv_buffer(struct rc4_context *rcc, char *buf, size_t size);

 
 /** \cond used to distinguish between loading of private/public key */
 #define LOAD_PUBLIC_KEY 0
 #define LOAD_PRIVATE_KEY 1
 
 /** \cond used to distinguish between loading of private/public key */
 #define LOAD_PUBLIC_KEY 0
 #define LOAD_PRIVATE_KEY 1

+#define CHALLENGE_SIZE 64

 /** \endcond **/
 /** \endcond **/