move crypto code

1 files changed, 78 insertions, 0 deletions

diff --git a/sys/crypto/blf.h b/sys/crypto/blf.h
new file mode 100644
index 00000000000..90397f1fa3f
--- /dev/null
+++ b/sys/crypto/blf.h
@@ -0,0 +1,78 @@
+/* $OpenBSD: blf.h,v 1.1 2000/02/28 23:13:04 deraadt Exp $ */
+/*
+ * Blowfish - a fast block cipher designed by Bruce Schneier
+ *
+ * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Niels Provos.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _BLF_H_
+#define _BLF_H_
+
+/* Schneier states the maximum key length to be 56 bytes.
+ * The way how the subkeys are initalized by the key up
+ * to (N+2)*4 i.e. 72 bytes are utilized.
+ * Warning: For normal blowfish encryption only 56 bytes
+ * of the key affect all cipherbits.
+ */
+
+#define BLF_N	16			/* Number of Subkeys */
+#define BLF_MAXKEYLEN ((BLF_N-2)*4)	/* 448 bits */
+
+/* Blowfish context */
+typedef struct BlowfishContext {
+	u_int32_t S[4][256];	/* S-Boxes */
+	u_int32_t P[BLF_N + 2];	/* Subkeys */
+} blf_ctx;
+
+/* Raw access to customized Blowfish
+ *	blf_key is just:
+ *	Blowfish_initstate( state )
+ *	Blowfish_expand0state( state, key, keylen )
+ */
+
+void Blowfish_encipher __P((blf_ctx *, u_int32_t *));
+void Blowfish_decipher __P((blf_ctx *, u_int32_t *));
+void Blowfish_initstate __P((blf_ctx *));
+void Blowfish_expand0state __P((blf_ctx *, const u_int8_t *, u_int16_t));
+void Blowfish_expandstate
+    __P((blf_ctx *, const u_int8_t *, u_int16_t, const u_int8_t *, u_int16_t));
+
+/* Standard Blowfish */
+
+void blf_key __P((blf_ctx *, const u_int8_t *, u_int16_t));
+void blf_enc __P((blf_ctx *, u_int32_t *, u_int16_t));
+void blf_dec __P((blf_ctx *, u_int32_t *, u_int16_t));
+
+/* Converts u_int8_t to u_int32_t */
+u_int32_t Blowfish_stream2word __P((const u_int8_t *, u_int16_t ,
+				    u_int16_t *));
+
+void blf_ecb_encrypt __P((blf_ctx *, u_int8_t *, u_int32_t));
+void blf_ecb_decrypt __P((blf_ctx *, u_int8_t *, u_int32_t));
+#endif