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1 files changed, 68 insertions, 0 deletions

diff --git a/wolfssl/wolfcrypt/arc4.h b/wolfssl/wolfcrypt/arc4.h
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+/* arc4.h
+ *
+ * Copyright (C) 2006-2020 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
+ */
+
+/*!
+    \file wolfssl/wolfcrypt/arc4.h
+*/
+
+#ifndef WOLF_CRYPT_ARC4_H
+#define WOLF_CRYPT_ARC4_H
+
+#include <wolfssl/wolfcrypt/types.h>
+
+#ifdef __cplusplus
+    extern "C" {
+#endif
+
+#ifdef WOLFSSL_ASYNC_CRYPT
+    #include <wolfssl/wolfcrypt/async.h>
+#endif
+
+enum {
+	ARC4_ENC_TYPE   = 4,    /* cipher unique type */
+    ARC4_STATE_SIZE = 256,
+    RC4_KEY_SIZE    = 16,   /* always 128bit           */
+};
+
+/* ARC4 encryption and decryption */
+typedef struct Arc4 {
+    byte x;
+    byte y;
+    byte state[ARC4_STATE_SIZE];
+#ifdef WOLFSSL_ASYNC_CRYPT
+    WC_ASYNC_DEV asyncDev;
+#endif
+    void* heap;
+} Arc4;
+
+WOLFSSL_API int wc_Arc4Process(Arc4*, byte*, const byte*, word32);
+WOLFSSL_API int wc_Arc4SetKey(Arc4*, const byte*, word32);
+
+WOLFSSL_API int  wc_Arc4Init(Arc4*, void*, int);
+WOLFSSL_API void wc_Arc4Free(Arc4*);
+
+#ifdef __cplusplus
+    } /* extern "C" */
+#endif
+
+
+#endif /* WOLF_CRYPT_ARC4_H */
+