#include "cryptlib.h"
#include <openssl/evp.h>
#include <openssl/objects.h>
+#include <openssl/rc4.h>
+
+/* FIXME: surely this is available elsewhere? */
+#define EVP_RC4_KEY_SIZE 16
+
+typedef struct
+ {
+ /* FIXME: what is the key for? */
+ unsigned char key[EVP_RC4_KEY_SIZE];
+ 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 EVP_CIPHER r4_cipher=
+static const EVP_CIPHER r4_cipher=
{
NID_rc4,
1,EVP_RC4_KEY_SIZE,0,
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,
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
};
-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, const unsigned char *key,
const unsigned char *iv, int enc)
{
- 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);
+ memcpy(&data(ctx)->key[0],key,EVP_CIPHER_CTX_key_length(ctx));
+ RC4_set_key(&data(ctx)->ks,EVP_CIPHER_CTX_key_length(ctx),
+ data(ctx)->key);
return 1;
}
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