Add documentation to struct rc4_context.

diff --git a/crypt.h b/crypt.h
index 019b643e7f00ef1c548a59b30e1d870f96cdb7d1..8edff4130a1386689108400af496a980b94e2fa7 100644 (file)
--- a/crypt.h
+++ b/crypt.h
@@ -17,9 +17,19 @@ 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);