Import of old SSLeay release: SSLeay 0.9.0b

1 files changed, 134 insertions, 0 deletions

diff --git a/crypto/bn/bn_mpi.c b/crypto/bn/bn_mpi.c
new file mode 100644
index 0000000..53945c1
--- /dev/null
+++ b/crypto/bn/bn_mpi.c
@@ -0,0 +1,134 @@
+/* crypto/bn/bn_mpi.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 <stdio.h>
+#include "cryptlib.h"
+#include "bn_lcl.h"
+
+int BN_bn2mpi(a,d)
+BIGNUM *a;
+unsigned char *d;
+	{
+	int bits;
+	int num=0;
+	int ext=0;
+	long l;
+
+	bits=BN_num_bits(a);
+	num=(bits+7)/8;
+	if (bits > 0)
+		{
+		ext=((bits & 0x07) == 0);
+		}
+	if (d == NULL)
+		return(num+4+ext);
+
+	l=num+ext;
+	d[0]=(unsigned char)(l>>24)&0xff;
+	d[1]=(unsigned char)(l>>16)&0xff;
+	d[2]=(unsigned char)(l>> 8)&0xff;
+	d[3]=(unsigned char)(l    )&0xff;
+	if (ext) d[4]=0;
+	num=BN_bn2bin(a,&(d[4+ext]));
+	if (a->neg)
+		d[4]|=0x80;
+	return(num+4+ext);
+	}
+
+BIGNUM *BN_mpi2bn(d,n,a)
+unsigned char *d;
+int n;
+BIGNUM *a;
+	{
+	long len;
+	int neg=0;
+
+	if (n < 4)
+		{
+		BNerr(BN_F_BN_MPI2BN,BN_R_INVALID_LENGTH);
+		return(NULL);
+		}
+	len=(d[0]<<24)|(d[1]<<16)|(d[2]<<8)|d[3];
+	if ((len+4) != n)
+		{
+		BNerr(BN_F_BN_MPI2BN,BN_R_ENCODING_ERROR);
+		return(NULL);
+		}
+
+	if (a == NULL) a=BN_new();
+	if (a == NULL) return(NULL);
+
+	if (len == 0)
+		{
+		a->neg=0;
+		a->top=0;
+		return(a);
+		}
+	d+=4;
+	if ((*d) & 0x80)
+		neg=1;
+	if (BN_bin2bn(d,(int)len,a) == NULL)
+		return(NULL);
+	a->neg=neg;
+	if (neg)
+		{
+		BN_clear_bit(a,BN_num_bits(a)-1);
+		}
+	return(a);
+	}
+