diff --git a/crypto/SHA-3/Modes/SimpleFIPS202.h b/crypto/SHA-3/Modes/SimpleFIPS202.h
new file mode 100644
index 00000000..7a6563eb
--- /dev/null
+++ b/crypto/SHA-3/Modes/SimpleFIPS202.h
@@ -0,0 +1,19 @@
+#ifndef _SimpleFIPS202_h_
+#define _SimpleFIPS202_h_
+
+#include "KeccakSponge.h"
+#include "string.h"
+
+int SHAKE128(unsigned char *output, size_t outputByteLen, const unsigned char *input, size_t inputByteLen);
+
+int SHAKE256(unsigned char *output, size_t outputByteLen, const unsigned char *input, size_t inputByteLen);
+
+int SHA3_224(unsigned char *output, const unsigned char *input, size_t inputByteLen);
+
+int SHA3_256(unsigned char *output, const unsigned char *input, size_t inputByteLen);
+
+int SHA3_384(unsigned char *output, const unsigned char *input, size_t inputByteLen);
+
+int SHA3_512(unsigned char *output, const unsigned char *input, size_t inputByteLen);
+
+#endif