RC4 compatibility functions added

src/ssl.c

@@ -73,6 +73,7 @@
     #include <wolfssl/openssl/ed25519.h>
     #include <wolfssl/openssl/ecdsa.h>
     #include <wolfssl/openssl/ecdh.h>
+    #include <wolfssl/openssl/rc4.h>
     /* openssl headers end, wolfssl internal headers next */
     #include <wolfssl/wolfcrypt/hmac.h>
     #include <wolfssl/wolfcrypt/random.h>
@@ -18670,6 +18671,48 @@ void wolfSSL_DES_ecb_encrypt(WOLFSSL_DES_cblock* desa,
 
 #endif /* NO_DES3 */
 
+#ifndef NO_RC4
+/* Set the key state for Arc4 structure.
+ *
+ * key  Arc4 structure to use
+ * len  length of data buffer
+ * data initial state to set Arc4 structure
+ */
+void wolfSSL_RC4_set_key(WOLFSSL_RC4_KEY* key, int len,
+        const unsigned char* data)
+{
+    WOLFSSL_ENTER("wolfSSL_RC4_set_key");
+
+    if (key == NULL || len < 0) {
+        WOLFSSL_MSG("bad argument passed in");
+        return;
+    }
+
+    XMEMSET(key, 0, sizeof(WOLFSSL_RC4_KEY));
+    wc_Arc4SetKey((Arc4*)key, data, (word32)len);
+}
+
+
+/* Encrypt/decrypt with Arc4 structure.
+ *
+ * len length of buffer to encrypt/decrypt (in/out)
+ * in  buffer to encrypt/decrypt
+ * out results of encryption/decryption
+ */
+void wolfSSL_RC4(WOLFSSL_RC4_KEY* key, size_t len,
+        const unsigned char* in, unsigned char* out)
+{
+    WOLFSSL_ENTER("wolfSSL_RC4");
+
+    if (key == NULL || in == NULL || out == NULL) {
+        WOLFSSL_MSG("Bad argument passed in");
+        return;
+    }
+
+    wc_Arc4Process((Arc4*)key, out, in, (word32)len);
+}
+#endif /* NO_RC4 */
+
 #ifndef NO_AES
 
 #ifdef WOLFSSL_AES_DIRECT

wolfssl/openssl/rc4.h

@@ -0,0 +1,62 @@
+/* rc4.h
+ *
+ * Copyright (C) 2006-2016 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+
+
+/*  rc4.h defines mini des openssl compatibility layer
+ *
+ */
+
+#ifndef WOLFSSL_RC4_COMPAT_H_
+#define WOLFSSL_RC4_COMPAT_H_
+
+#include <wolfssl/wolfcrypt/settings.h>
+#include <wolfssl/openssl/ssl.h> /* included for size_t */
+
+#ifdef __cplusplus
+    extern "C" {
+#endif
+
+/* applications including wolfssl/openssl/rc4.h are expecting to have access to
+ * the size of RC4_KEY structures. */
+typedef struct WOLFSSL_RC4_KEY {
+    /* big enough for Arc4 from wolfssl/wolfcrypt/arc4.h */
+    unsigned char holder[272];
+    #ifdef WOLFSSL_ASYNC_CRYPT
+        unsigned char additional[64]; /* async uses additional memory */
+    #endif
+} WOLFSSL_RC4_KEY;
+typedef WOLFSSL_RC4_KEY RC4_KEY;
+
+WOLFSSL_API void wolfSSL_RC4_set_key(WOLFSSL_RC4_KEY* key, int len,
+        const unsigned char* data);
+WOLFSSL_API void wolfSSL_RC4(WOLFSSL_RC4_KEY* key, size_t len,
+        const unsigned char* in, unsigned char* out);
+
+#define RC4         wolfSSL_RC4
+#define RC4_set_key wolfSSL_RC4_set_key
+
+#ifdef __cplusplus
+    }  /* extern "C" */
+#endif
+
+#endif /* WOLFSSL_RC4_COMPAT_H_ */
+