initial commit, resurrect one of my realy old projects

1 files changed, 63 insertions, 0 deletions

diff --git a/des.h b/des.h
new file mode 100644
index 0000000..dd71a08
--- /dev/null
+++ b/des.h
@@ -0,0 +1,63 @@
+/* 
+ * Cryptographic API.
+ *
+ * DES & Triple DES EDE Cipher Algorithms.
+ *
+ * Originally released as descore by Dana L. How <how@isl.stanford.edu>.
+ * Modified by Raimar Falke <rf13@inf.tu-dresden.de> for the Linux-Kernel.
+ * Derived from Cryptoapi and Nettle implementations, adapted for in-place
+ * scatterlist interface.  Changed LGPL to GPL per section 3 of the LGPL.
+ *
+ * Copyright (c) 1992 Dana L. How.
+ * Copyright (c) Raimar Falke <rf13@inf.tu-dresden.de> 
+ * Copyright (c) Gisle Sælensminde <gisle@ii.uib.no>
+ * Copyright (C) 2001 Niels Möller.
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * 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.
+ *
+ */
+#ifndef _DES_
+#define _DES_
+
+#include "uint.h"
+
+#define DES_KEY_SIZE		8
+#define DES_EXPKEY_WORDS	32
+#define DES_BLOCK_SIZE		8
+
+#define DES3_EDE_KEY_SIZE	(3 * DES_KEY_SIZE)
+#define DES3_EDE_EXPKEY_WORDS	(3 * DES_EXPKEY_WORDS)
+#define DES3_EDE_BLOCK_SIZE	DES_BLOCK_SIZE
+
+#define CRYPTO_TFM_REQ_WEAK_KEY		0x00000100
+#define CRYPTO_TFM_RES_WEAK_KEY		0x00100000
+#define CRYPTO_TFM_RES_BAD_KEY_SCHED 	0x00400000
+
+struct des_ctx {
+	u8 iv[DES_BLOCK_SIZE];
+	u32 expkey[DES_EXPKEY_WORDS];
+};
+
+struct des3_ede_ctx {
+	u8 iv[DES_BLOCK_SIZE];
+	u32 expkey[DES3_EDE_EXPKEY_WORDS];
+};
+
+int des_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags);
+
+void des_encrypt(void *ctx, u8 *dst, const u8 *src);
+
+void des_decrypt(void *ctx, u8 *dst, const u8 *src);
+
+
+int des3_ede_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags);
+
+void des3_ede_encrypt(void *ctx, u8 *dst, const u8 *src);
+
+void des3_ede_decrypt(void *ctx, u8 *dst, const u8 *src);
+
+#endif