X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fevp%2Fe_rc4.c;h=67af850bea1ab955cdc3159bd57bb9f8a55c3b73;hp=bc108f4356d69f082ebe6c294b7fff33fd26951e;hb=8215e7a93897347a97de87b3d26fe84cc8a5b05d;hpb=be06a9348d83187071270a29aabfe10cc3904f85

diff --git a/crypto/evp/e_rc4.c b/crypto/evp/e_rc4.c
index bc108f4356..67af850bea 100644
--- a/crypto/evp/e_rc4.c
+++ b/crypto/evp/e_rc4.c
@@ -56,18 +56,30 @@
  * [including the GNU Public Licence.]
  */
 
-#ifndef NO_RC4
-
 #include <stdio.h>
 #include "cryptlib.h"
+
+#ifndef OPENSSL_NO_RC4
+
 #include <openssl/evp.h>
 #include <openssl/objects.h>
+#include <openssl/rc4.h>
+
+/* FIXME: surely this is available elsewhere? */
+#define EVP_RC4_KEY_SIZE		16
 
-static int rc4_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
-	unsigned char *iv,int enc);
+typedef struct
+    {
+    RC4_KEY ks;	/* working key */
+    } EVP_RC4_KEY;
+
+#define data(ctx) ((EVP_RC4_KEY *)(ctx)->cipher_data)
+
+static int rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+			const unsigned char *iv,int enc);
 static int rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-	unsigned char *in, unsigned int inl);
-static EVP_CIPHER r4_cipher=
+		      const unsigned char *in, unsigned int inl);
+static const EVP_CIPHER r4_cipher=
 	{
 	NID_rc4,
 	1,EVP_RC4_KEY_SIZE,0,
@@ -75,14 +87,14 @@ static EVP_CIPHER r4_cipher=
 	rc4_init_key,
 	rc4_cipher,
 	NULL,
-	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
-		sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc4)),
+	sizeof(EVP_RC4_KEY),
+	NULL,
 	NULL,
 	NULL,
 	NULL
 	};
 
-static EVP_CIPHER r4_40_cipher=
+static const EVP_CIPHER r4_40_cipher=
 	{
 	NID_rc4_40,
 	1,5 /* 40 bit */,0,
@@ -90,37 +102,35 @@ static EVP_CIPHER r4_40_cipher=
 	rc4_init_key,
 	rc4_cipher,
 	NULL,
-	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
-		sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc4)),
+	sizeof(EVP_RC4_KEY),
 	NULL, 
 	NULL,
+	NULL,
 	NULL
 	};
 
-EVP_CIPHER *EVP_rc4(void)
+const EVP_CIPHER *EVP_rc4(void)
 	{
 	return(&r4_cipher);
 	}
 
-EVP_CIPHER *EVP_rc4_40(void)
+const EVP_CIPHER *EVP_rc4_40(void)
 	{
 	return(&r4_40_cipher);
 	}
 
-static int rc4_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
-	     unsigned char *iv, int enc)
+static int rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+			const unsigned char *iv, int enc)
 	{
-	if (key != NULL)
-		memcpy(&(ctx->c.rc4.key[0]),key,EVP_CIPHER_CTX_key_length(ctx));
-	RC4_set_key(&(ctx->c.rc4.ks),EVP_CIPHER_CTX_key_length(ctx),
-		ctx->c.rc4.key);
+	RC4_set_key(&data(ctx)->ks,EVP_CIPHER_CTX_key_length(ctx),
+		    key);
 	return 1;
 	}
 
 static int rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-	     unsigned char *in, unsigned int inl)
+		      const unsigned char *in, unsigned int inl)
 	{
-	RC4(&(ctx->c.rc4.ks),inl,in,out);
+	RC4(&data(ctx)->ks,inl,in,out);
 	return 1;
 	}
 #endif