Initial import

1 files changed, 121 insertions, 0 deletions

diff --git a/openssl/crypto/bf/bf_cfb64.c b/openssl/crypto/bf/bf_cfb64.c
new file mode 100644
index 00000000..6451c8d4
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+++ b/openssl/crypto/bf/bf_cfb64.c
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+/* crypto/bf/bf_cfb64.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 <openssl/blowfish.h>
+#include "bf_locl.h"
+
+/* The input and output encrypted as though 64bit cfb mode is being
+ * used.  The extra state information to record how much of the
+ * 64bit block we have used is contained in *num;
+ */
+
+void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length,
+	     const BF_KEY *schedule, unsigned char *ivec, int *num, int encrypt)
+	{
+	register BF_LONG v0,v1,t;
+	register int n= *num;
+	register long l=length;
+	BF_LONG ti[2];
+	unsigned char *iv,c,cc;
+
+	iv=(unsigned char *)ivec;
+	if (encrypt)
+		{
+		while (l--)
+			{
+			if (n == 0)
+				{
+				n2l(iv,v0); ti[0]=v0;
+				n2l(iv,v1); ti[1]=v1;
+				BF_encrypt((BF_LONG *)ti,schedule);
+				iv=(unsigned char *)ivec;
+				t=ti[0]; l2n(t,iv);
+				t=ti[1]; l2n(t,iv);
+				iv=(unsigned char *)ivec;
+				}
+			c= *(in++)^iv[n];
+			*(out++)=c;
+			iv[n]=c;
+			n=(n+1)&0x07;
+			}
+		}
+	else
+		{
+		while (l--)
+			{
+			if (n == 0)
+				{
+				n2l(iv,v0); ti[0]=v0;
+				n2l(iv,v1); ti[1]=v1;
+				BF_encrypt((BF_LONG *)ti,schedule);
+				iv=(unsigned char *)ivec;
+				t=ti[0]; l2n(t,iv);
+				t=ti[1]; l2n(t,iv);
+				iv=(unsigned char *)ivec;
+				}
+			cc= *(in++);
+			c=iv[n];
+			iv[n]=cc;
+			*(out++)=c^cc;
+			n=(n+1)&0x07;
+			}
+		}
+	v0=v1=ti[0]=ti[1]=t=c=cc=0;
+	*num=n;
+	}
+