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authorJoel Sherrill <joel.sherrill@oarcorp.com>2012-03-07 09:52:04 -0600
committerJoel Sherrill <joel.sherrill@oarcorp.com>2012-03-07 09:52:04 -0600
commita9153ec3040f54fa52b68e14dafed2aba7b780ae (patch)
treefda80e3380dfebf7d97868507aa185757852e882 /rtems/freebsd/crypto/blowfish/bf_enc.c
downloadrtems-libbsd-a9153ec3040f54fa52b68e14dafed2aba7b780ae.tar.bz2
Initial import
Code is based on FreeBSD 8.2 with USB support from Sebastian Huber and Thomas Doerfler. Initial TCP/IP stack work is from Kevel Kirspel.
Diffstat (limited to 'rtems/freebsd/crypto/blowfish/bf_enc.c')
-rw-r--r--rtems/freebsd/crypto/blowfish/bf_enc.c163
1 files changed, 163 insertions, 0 deletions
diff --git a/rtems/freebsd/crypto/blowfish/bf_enc.c b/rtems/freebsd/crypto/blowfish/bf_enc.c
new file mode 100644
index 00000000..24807c05
--- /dev/null
+++ b/rtems/freebsd/crypto/blowfish/bf_enc.c
@@ -0,0 +1,163 @@
+#include <rtems/freebsd/machine/rtems-bsd-config.h>
+
+/* $KAME: bf_enc.c,v 1.7 2002/02/27 01:33:59 itojun Exp $ */
+
+/* crypto/bf/bf_enc.c */
+
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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 cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 OR CONTRIBUTORS 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <rtems/freebsd/sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/freebsd/sys/types.h>
+#include <rtems/freebsd/crypto/blowfish/blowfish.h>
+#include <rtems/freebsd/crypto/blowfish/bf_locl.h>
+
+/* Blowfish as implemented from 'Blowfish: Springer-Verlag paper'
+ * (From LECTURE NOTES IN COIMPUTER SCIENCE 809, FAST SOFTWARE ENCRYPTION,
+ * CAMBRIDGE SECURITY WORKSHOP, CAMBRIDGE, U.K., DECEMBER 9-11, 1993)
+ */
+
+#if (BF_ROUNDS != 16) && (BF_ROUNDS != 20)
+If you set BF_ROUNDS to some value other than 16 or 20, you will have
+to modify the code.
+#endif
+
+/* XXX "data" is host endian */
+void
+BF_encrypt(data, key)
+ BF_LONG *data;
+ BF_KEY *key;
+{
+ register BF_LONG l, r, *p, *s;
+
+ p = key->P;
+ s= &key->S[0];
+ l = data[0];
+ r = data[1];
+
+ l^=p[0];
+ BF_ENC(r, l, s, p[ 1]);
+ BF_ENC(l, r, s, p[ 2]);
+ BF_ENC(r, l, s, p[ 3]);
+ BF_ENC(l, r, s, p[ 4]);
+ BF_ENC(r, l, s, p[ 5]);
+ BF_ENC(l, r, s, p[ 6]);
+ BF_ENC(r, l, s, p[ 7]);
+ BF_ENC(l, r, s, p[ 8]);
+ BF_ENC(r, l, s, p[ 9]);
+ BF_ENC(l, r, s, p[10]);
+ BF_ENC(r, l, s, p[11]);
+ BF_ENC(l, r, s, p[12]);
+ BF_ENC(r, l, s, p[13]);
+ BF_ENC(l, r, s, p[14]);
+ BF_ENC(r, l, s, p[15]);
+ BF_ENC(l, r, s, p[16]);
+#if BF_ROUNDS == 20
+ BF_ENC(r, l, s, p[17]);
+ BF_ENC(l, r, s, p[18]);
+ BF_ENC(r, l, s, p[19]);
+ BF_ENC(l, r, s, p[20]);
+#endif
+ r ^= p[BF_ROUNDS + 1];
+
+ data[1] = l & 0xffffffff;
+ data[0] = r & 0xffffffff;
+}
+
+/* XXX "data" is host endian */
+void
+BF_decrypt(data, key)
+ BF_LONG *data;
+ BF_KEY *key;
+{
+ register BF_LONG l, r, *p, *s;
+
+ p = key->P;
+ s= &key->S[0];
+ l = data[0];
+ r = data[1];
+
+ l ^= p[BF_ROUNDS + 1];
+#if BF_ROUNDS == 20
+ BF_ENC(r, l, s, p[20]);
+ BF_ENC(l, r, s, p[19]);
+ BF_ENC(r, l, s, p[18]);
+ BF_ENC(l, r, s, p[17]);
+#endif
+ BF_ENC(r, l, s, p[16]);
+ BF_ENC(l, r, s, p[15]);
+ BF_ENC(r, l, s, p[14]);
+ BF_ENC(l, r, s, p[13]);
+ BF_ENC(r, l, s, p[12]);
+ BF_ENC(l, r, s, p[11]);
+ BF_ENC(r, l, s, p[10]);
+ BF_ENC(l, r, s, p[ 9]);
+ BF_ENC(r, l, s, p[ 8]);
+ BF_ENC(l, r, s, p[ 7]);
+ BF_ENC(r, l, s, p[ 6]);
+ BF_ENC(l, r, s, p[ 5]);
+ BF_ENC(r, l, s, p[ 4]);
+ BF_ENC(l, r, s, p[ 3]);
+ BF_ENC(r, l, s, p[ 2]);
+ BF_ENC(l, r, s, p[ 1]);
+ r ^= p[0];
+
+ data[1] = l & 0xffffffff;
+ data[0] = r & 0xffffffff;
+}