X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=A5_1.h;h=fab01719149c30c7a803ab34367eae887940b2a2;hb=b246a2a0589f234db6247255555df98f4c281c41;hp=8803198b644698283761b4c5e1105054670af0b1;hpb=3c995d0a8faeb9d37927d48e20fc45d839e066ea;p=avr-crypto-lib.git

diff --git a/A5_1.h b/A5_1.h
index 8803198..fab0171 100644
--- a/A5_1.h
+++ b/A5_1.h
@@ -1,7 +1,25 @@
+/* A5_1.h */
+/*
+    This file is part of the AVR-Crypto-Lib.
+    Copyright (C) 2008  Daniel Otte (daniel.otte@rub.de)
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+*/
 /* 
- * File:		A5_1.h
- * Author:	Daniel Otte
- * Date: 	24.06.2006
+ * File:    A5_1.h
+ * Author:  Daniel Otte
+ * Date:    24.06.2006
  * License: GPL
  * Description: Implementation of the A5/1 stream cipher algorithm, as used in GSM.
  * ! Warning, this is weak crypto !
@@ -35,12 +53,13 @@
 #define PARITY_LOOKUP 0x96
 
 typedef struct {
-	uint32_t r1,r2,r3; /* the three regs, 19,22,23 bit in length  */
+	/* we are wasting one byte here but this allows a much faster implementation */
+	uint8_t r1[3], r2[3], r3[3]; /* the three regs, 19,22,23 bit in length  */
 } a5_1_ctx_t;
  
 
-void		a5_1_init(a5_1_ctx_t *c, uint8_t *key, uint8_t length);
-bool		a5_1_clock(a5_1_ctx_t *c);
-uint8_t a5_1_gen(a5_	1_ctx_t *c);
+void		a5_1_init(a5_1_ctx_t *c, void* key, uint8_t keylength_b, void* iv, uint8_t ivlength_b);
+uint8_t		a5_1_clock(a5_1_ctx_t *c);
+uint8_t 	a5_1_gen(a5_1_ctx_t *c);
 
 #endif