1 files changed, 38 insertions, 0 deletions
diff --git a/aezref/aezv5/ref/blake2b.h b/aezref/aezv5/ref/blake2b.h
new file mode 100644
index 0000000..c4ebc4a
--- /dev/null
+++ b/aezref/aezv5/ref/blake2b.h
@@ -0,0 +1,38 @@
+// blake2b.h
+// BLAKE2b Hashing Context and API Prototypes
+
+#ifndef BLAKE2B_H
+#define BLAKE2B_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+// state context
+typedef struct {
+    uint8_t b[128];                     // input buffer
+    uint64_t h[8];                      // chained state
+    uint64_t t[2];                      // total number of bytes
+    size_t c;                           // pointer for b[]
+    size_t outlen;                      // digest size
+} blake2b_ctx;
+
+// Initialize the hashing context "ctx" with optional key "key".
+//      1 <= outlen <= 64 gives the digest size in bytes.
+//      Secret key (also <= 64 bytes) is optional (keylen = 0).
+int blake2b_init(blake2b_ctx *ctx, size_t outlen,
+    const void *key, size_t keylen);    // secret key
+
+// Add "inlen" bytes from "in" into the hash.
+void blake2b_update(blake2b_ctx *ctx,   // context
+    const void *in, size_t inlen);      // data to be hashed
+
+// Generate the message digest (size given in init).
+//      Result placed in "out".
+void blake2b_final(blake2b_ctx *ctx, void *out);
+
+// All-in-one convenience function.
+int blake2b(void *out, size_t outlen,   // return buffer for digest
+    const void *key, size_t keylen,     // optional secret key
+    const void *in, size_t inlen);      // data to be hashed
+
+#endif