* [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>
-#ifndef NOPROTO
-static void rc4_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
- unsigned char *iv,int enc);
-static void rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- unsigned char *in, unsigned int inl);
-#else
-static void rc4_init_key();
-static void rc4_cipher();
-#endif
+/* FIXME: surely this is available elsewhere? */
+#define EVP_RC4_KEY_SIZE 16
-static EVP_CIPHER r4_cipher=
+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,
+ const unsigned char *in, unsigned int inl);
+static const EVP_CIPHER r4_cipher=
{
NID_rc4,
1,EVP_RC4_KEY_SIZE,0,
+ EVP_CIPH_VARIABLE_LENGTH,
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
};
-static EVP_CIPHER r4_40_cipher=
+static const EVP_CIPHER r4_40_cipher=
{
NID_rc4_40,
1,5 /* 40 bit */,0,
+ EVP_CIPH_VARIABLE_LENGTH,
rc4_init_key,
rc4_cipher,
+ NULL,
+ sizeof(EVP_RC4_KEY),
+ 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 void 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 void rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- unsigned char *in, unsigned int inl)
+static int rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ 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