X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fevp%2Fe_cbc_r2.c;h=e7aa44d9af1473a7b670fd16576446b5af18d39e;hp=4f8002f16d10a127b9a8ca16c53c67518bfc5dac;hb=884e8ec61533ee6361d72151066a808a0cfcd6d3;hpb=58964a492275ca9a59a0cd9c8155cb2491b4b909

diff --git a/crypto/evp/e_cbc_r2.c b/crypto/evp/e_cbc_r2.c
index 4f8002f16d..e7aa44d9af 100644
--- a/crypto/evp/e_cbc_r2.c
+++ b/crypto/evp/e_cbc_r2.c
@@ -60,18 +60,21 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include "evp.h"
-#include "objects.h"
+#include <openssl/evp.h>
+#include <openssl/objects.h>
 
-#ifndef NOPROTO
 static void rc2_cbc_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
 	unsigned char *iv,int enc);
 static void rc2_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 	unsigned char *in, unsigned int inl);
-#else
-static void rc2_cbc_init_key();
-static void rc2_cbc_cipher();
-#endif
+static int rc2_meth_to_magic(const EVP_CIPHER *e);
+static EVP_CIPHER *rc2_magic_to_meth(int i);
+static int rc2_set_asn1_type_and_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
+static int rc2_get_asn1_type_and_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
+
+#define RC2_40_MAGIC	0xa0
+#define RC2_64_MAGIC	0x78
+#define RC2_128_MAGIC	0x3a
 
 static EVP_CIPHER r2_cbc_cipher=
 	{
@@ -82,8 +85,21 @@ static EVP_CIPHER r2_cbc_cipher=
 	NULL,
 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc2_ks)),
-	EVP_CIPHER_get_asn1_iv,
-	EVP_CIPHER_set_asn1_iv,
+	rc2_set_asn1_type_and_iv,
+	rc2_get_asn1_type_and_iv,
+	};
+
+static EVP_CIPHER r2_64_cbc_cipher=
+	{
+	NID_rc2_40_cbc,
+	8,8 /* 64 bit */,8,
+	rc2_cbc_init_key,
+	rc2_cbc_cipher,
+	NULL,
+	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
+		sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc2_ks)),
+	rc2_set_asn1_type_and_iv,
+	rc2_get_asn1_type_and_iv,
 	};
 
 static EVP_CIPHER r2_40_cbc_cipher=
@@ -95,23 +111,27 @@ static EVP_CIPHER r2_40_cbc_cipher=
 	NULL,
 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc2_ks)),
+	rc2_set_asn1_type_and_iv,
+	rc2_get_asn1_type_and_iv,
 	};
 
-EVP_CIPHER *EVP_rc2_cbc()
+EVP_CIPHER *EVP_rc2_cbc(void)
 	{
 	return(&r2_cbc_cipher);
 	}
 
-EVP_CIPHER *EVP_rc2_40_cbc()
+EVP_CIPHER *EVP_rc2_64_cbc(void)
+	{
+	return(&r2_64_cbc_cipher);
+	}
+
+EVP_CIPHER *EVP_rc2_40_cbc(void)
 	{
 	return(&r2_40_cbc_cipher);
 	}
 	
-static void rc2_cbc_init_key(ctx,key,iv,enc)
-EVP_CIPHER_CTX *ctx;
-unsigned char *key;
-unsigned char *iv;
-int enc;
+static void rc2_cbc_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
+	     unsigned char *iv, int enc)
 	{
 	if (iv != NULL)
 		memcpy(&(ctx->oiv[0]),iv,8);
@@ -121,11 +141,8 @@ int enc;
 			key,EVP_CIPHER_CTX_key_length(ctx)*8);
 	}
 
-static void rc2_cbc_cipher(ctx,out,in,inl)
-EVP_CIPHER_CTX *ctx;
-unsigned char *out;
-unsigned char *in;
-unsigned int inl;
+static void rc2_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+	     unsigned char *in, unsigned int inl)
 	{
 	RC2_cbc_encrypt(
 		in,out,(long)inl,
@@ -133,4 +150,67 @@ unsigned int inl;
 		ctx->encrypt);
 	}
 
+static int rc2_meth_to_magic(const EVP_CIPHER *e)
+	{
+	int i;
+
+	i=EVP_CIPHER_key_length(e);
+	if 	(i == 16) return(RC2_128_MAGIC);
+	else if (i == 8)  return(RC2_64_MAGIC);
+	else if (i == 5)  return(RC2_40_MAGIC);
+	else return(0);
+	}
+
+static EVP_CIPHER *rc2_magic_to_meth(int i)
+	{
+	if      (i == RC2_128_MAGIC) return(EVP_rc2_cbc());
+	else if (i == RC2_64_MAGIC)  return(EVP_rc2_64_cbc());
+	else if (i == RC2_40_MAGIC)  return(EVP_rc2_40_cbc());
+	else
+		{
+		EVPerr(EVP_F_RC2_MAGIC_TO_METH,EVP_R_UNSUPPORTED_KEY_SIZE);
+		return(NULL);
+		}
+	}
+
+static int rc2_get_asn1_type_and_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
+	{
+	long num=0;
+	int i=0,l;
+	EVP_CIPHER *e;
+
+	if (type != NULL)
+		{
+		l=EVP_CIPHER_CTX_iv_length(c);
+		i=ASN1_TYPE_get_int_octetstring(type,&num,c->oiv,l);
+		if (i != l)
+			return(-1);
+		else if (i > 0)
+			memcpy(c->iv,c->oiv,l);
+		e=rc2_magic_to_meth((int)num);
+		if (e == NULL)
+			return(-1);
+		if (e != EVP_CIPHER_CTX_cipher(c))
+			{
+			EVP_CIPHER_CTX_cipher(c)=e;
+			rc2_cbc_init_key(c,NULL,NULL,1);
+			}
+		}
+	return(i);
+	}
+
+static int rc2_set_asn1_type_and_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
+	{
+	long num;
+	int i=0,j;
+
+	if (type != NULL)
+		{
+		num=rc2_meth_to_magic(EVP_CIPHER_CTX_cipher(c));
+		j=EVP_CIPHER_CTX_iv_length(c);
+		i=ASN1_TYPE_set_int_octetstring(type,num,c->oiv,j);
+		}
+	return(i);
+	}
+
 #endif