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-rw-r--r--src/crypto/halfsiphash.h22
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diff --git a/src/crypto/halfsiphash.h b/src/crypto/halfsiphash.h
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+/*
+ SipHash reference C implementation
+
+ Copyright (c) 2012-2021 Jean-Philippe Aumasson
+ <jeanphilippe.aumasson@gmail.com>
+ Copyright (c) 2012-2014 Daniel J. Bernstein <djb@cr.yp.to>
+
+ To the extent possible under law, the author(s) have dedicated all copyright
+ and related and neighboring rights to this software to the public domain
+ worldwide. This software is distributed without any warranty.
+
+ You should have received a copy of the CC0 Public Domain Dedication along
+ with
+ this software. If not, see
+ <http://creativecommons.org/publicdomain/zero/1.0/>.
+ */
+
+#include <inttypes.h>
+#include <string.h>
+
+int halfsiphash(const void *in, const size_t inlen, const void *k, uint8_t *out,
+ const size_t outlen);