1 files changed, 50 insertions, 0 deletions
diff --git a/sys/dev/if_wg/include/zinc/blake2s.h b/sys/dev/if_wg/include/zinc/blake2s.h
new file mode 100644
index 0000000000000..e87bfdbc9f6d7
--- /dev/null
+++ b/sys/dev/if_wg/include/zinc/blake2s.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#ifndef _ZINC_BLAKE2S_H
+#define _ZINC_BLAKE2S_H
+
+#include <sys/types.h>
+
+enum blake2s_lengths {
+	BLAKE2S_BLOCK_SIZE = 64,
+	BLAKE2S_HASH_SIZE = 32,
+	BLAKE2S_KEY_SIZE = 32
+};
+
+struct blake2s_state {
+	uint32_t h[8];
+	uint32_t t[2];
+	uint32_t f[2];
+	uint8_t buf[BLAKE2S_BLOCK_SIZE];
+	unsigned int buflen;
+	unsigned int outlen;
+};
+
+void blake2s_init(struct blake2s_state *state, const size_t outlen);
+void blake2s_init_key(struct blake2s_state *state, const size_t outlen,
+		      const void *key, const size_t keylen);
+void blake2s_update(struct blake2s_state *state, const uint8_t *in, size_t inlen);
+//void blake2s_final(struct blake2s_state *state, uint8_t *out);
+
+static inline void blake2s(uint8_t *out, const uint8_t *in, const uint8_t *key,
+			   const size_t outlen, const size_t inlen,
+			   const size_t keylen)
+{
+	struct blake2s_state state;
+
+	if (keylen)
+		blake2s_init_key(&state, outlen, key, keylen);
+	else
+		blake2s_init(&state, outlen);
+
+	blake2s_update(&state, in, inlen);
+	blake2s_final(&state, out);
+}
+
+void blake2s_hmac(uint8_t *out, const uint8_t *in, const uint8_t *key, const size_t outlen,
+		  const size_t inlen, const size_t keylen);
+
+#endif /* _ZINC_BLAKE2S_H */