1 files changed, 36 insertions, 0 deletions
diff --git a/src/crypto/blake2s.h b/src/crypto/blake2s.h
new file mode 100644
index 0000000..1b42141
--- /dev/null
+++ b/src/crypto/blake2s.h
@@ -0,0 +1,36 @@
+/* Copyright 2015-2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
+
+#ifndef BLAKE2S_H
+#define BLAKE2S_H
+
+#include <linux/types.h>
+
+enum blake2s_lengths {
+	BLAKE2S_BLOCKBYTES = 64,
+	BLAKE2S_OUTBYTES = 32,
+	BLAKE2S_KEYBYTES = 32
+};
+
+struct blake2s_state {
+	uint32_t h[8];
+	uint32_t t[2];
+	uint32_t f[2];
+	uint8_t buf[2 * BLAKE2S_BLOCKBYTES];
+	size_t buflen;
+	uint8_t last_node;
+};
+
+void blake2s(uint8_t *out, const uint8_t *in, const uint8_t *key, const uint8_t outlen, const uint64_t inlen, const uint8_t keylen);
+
+void blake2s_init(struct blake2s_state *state, const uint8_t outlen);
+void blake2s_init_key(struct blake2s_state *state, const uint8_t outlen, const void *key, const uint8_t keylen);
+void blake2s_update(struct blake2s_state *state, const uint8_t *in, uint64_t inlen);
+void blake2s_final(struct blake2s_state *state, uint8_t *out, uint8_t outlen);
+
+void blake2s_hmac(uint8_t *out, const uint8_t *in, const uint8_t *key, const uint8_t outlen, const uint64_t inlen, const uint64_t keylen);
+
+#ifdef DEBUG
+void blake2s_selftest(void);
+#endif
+
+#endif