--- /dev/null
+#ifndef IKEYS_H
+#define IKEYS_H
+int testKeyDiversification();
+int doKeyTests();
+void hash0(uint64_t c, uint8_t *k);
+void pushbackSixBitByte(uint64_t *c, uint8_t z, int n);
+uint8_t getSixBitByte(uint64_t c, int n);
+#endif // IKEYS_H