1 files changed, 17 insertions, 0 deletions
diff --git a/src/crypto/poly1305.h b/src/crypto/poly1305.h
new file mode 100644
index 0000000000..1598b013b9
--- /dev/null
+++ b/src/crypto/poly1305.h
@@ -0,0 +1,17 @@
+// Copyright (c) 2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_CRYPTO_POLY1305_H
+#define BITCOIN_CRYPTO_POLY1305_H
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#define POLY1305_KEYLEN 32
+#define POLY1305_TAGLEN 16
+
+void poly1305_auth(unsigned char out[POLY1305_TAGLEN], const unsigned char *m, size_t inlen,
+    const unsigned char key[POLY1305_KEYLEN]);
+
+#endif // BITCOIN_CRYPTO_POLY1305_H