Import of old SSLeay release: SSLeay 0.9.0b

1 files changed, 154 insertions, 53 deletions

diff --git a/crypto/bf/bf_enc.c b/crypto/bf/bf_enc.c
index 9bcc2169ce..66a8604c59 100644
--- a/crypto/bf/bf_enc.c
+++ b/crypto/bf/bf_enc.c
@@ -1,5 +1,5 @@
 /* crypto/bf/bf_enc.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
  * This package is an SSL implementation written
@@ -69,10 +69,9 @@ If you set BF_ROUNDS to some value other than 16 or 20, you will have
 to modify the code.
 #endif
 
-void BF_encrypt(data,key,encrypt)
+void BF_encrypt(data,key)
 BF_LONG *data;
 BF_KEY *key;
-int encrypt;
 	{
 	register BF_LONG l,r,*p,*s;
 
@@ -81,60 +80,162 @@ int encrypt;
 	l=data[0];
 	r=data[1];
 
-	if (encrypt)
-		{
-		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]);
+	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]);
+	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];
-		}
-	else
-		{
-		l^=p[BF_ROUNDS+1];
+	r^=p[BF_ROUNDS+1];
+
+	data[1]=l&0xffffffffL;
+	data[0]=r&0xffffffffL;
+	}
+
+#ifndef BF_DEFAULT_OPTIONS
+
+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]);
+	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];
-		}
+	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&0xffffffffL;
 	data[0]=r&0xffffffffL;
 	}
+
+void BF_cbc_encrypt(in, out, length, ks, iv, encrypt)
+unsigned char *in;
+unsigned char *out;
+long length;
+BF_KEY *ks;
+unsigned char *iv;
+int encrypt;
+	{
+	register BF_LONG tin0,tin1;
+	register BF_LONG tout0,tout1,xor0,xor1;
+	register long l=length;
+	BF_LONG tin[2];
+
+	if (encrypt)
+		{
+		n2l(iv,tout0);
+		n2l(iv,tout1);
+		iv-=8;
+		for (l-=8; l>=0; l-=8)
+			{
+			n2l(in,tin0);
+			n2l(in,tin1);
+			tin0^=tout0;
+			tin1^=tout1;
+			tin[0]=tin0;
+			tin[1]=tin1;
+			BF_encrypt(tin,ks);
+			tout0=tin[0];
+			tout1=tin[1];
+			l2n(tout0,out);
+			l2n(tout1,out);
+			}
+		if (l != -8)
+			{
+			n2ln(in,tin0,tin1,l+8);
+			tin0^=tout0;
+			tin1^=tout1;
+			tin[0]=tin0;
+			tin[1]=tin1;
+			BF_encrypt(tin,ks);
+			tout0=tin[0];
+			tout1=tin[1];
+			l2n(tout0,out);
+			l2n(tout1,out);
+			}
+		l2n(tout0,iv);
+		l2n(tout1,iv);
+		}
+	else
+		{
+		n2l(iv,xor0);
+		n2l(iv,xor1);
+		iv-=8;
+		for (l-=8; l>=0; l-=8)
+			{
+			n2l(in,tin0);
+			n2l(in,tin1);
+			tin[0]=tin0;
+			tin[1]=tin1;
+			BF_decrypt(tin,ks);
+			tout0=tin[0]^xor0;
+			tout1=tin[1]^xor1;
+			l2n(tout0,out);
+			l2n(tout1,out);
+			xor0=tin0;
+			xor1=tin1;
+			}
+		if (l != -8)
+			{
+			n2l(in,tin0);
+			n2l(in,tin1);
+			tin[0]=tin0;
+			tin[1]=tin1;
+			BF_decrypt(tin,ks);
+			tout0=tin[0]^xor0;
+			tout1=tin[1]^xor1;
+			l2nn(tout0,tout1,out,l+8);
+			xor0=tin0;
+			xor1=tin1;
+			}
+		l2n(xor0,iv);
+		l2n(xor1,iv);
+		}
+	tin0=tin1=tout0=tout1=xor0=xor1=0;
+	tin[0]=tin[1]=0;
+	}
+
+#endif