diff --git a/Formula/libb2.rb b/Formula/libb2.rb
new file mode 100644
index 00000000000..0e8d2c61507
--- /dev/null
+++ b/Formula/libb2.rb
@@ -0,0 +1,48 @@
+require "formula"
+
+class Libb2 < Formula
+  homepage "https://blake2.net"
+  url "https://blake2.net/libb2-0.96.tar.gz"
+  sha1 "e52ce4c788a972e3a49bbbe4380331030c4aca32"
+
+  def install
+    system "./configure", "--disable-dependency-tracking",
+                          "--disable-silent-rules",
+                          "--enable-fat",
+                          "--prefix=#{prefix}"
+    system "make", "install"
+  end
+
+  test do
+    (testpath/'blake2test.c').write <<-EOS.undent
+      #include <blake2.h>
+      #include <stdio.h>
+      #include <string.h>
+
+      int main(void) {
+          uint8_t out[64];
+          uint8_t expected[64] =
+          {
+            0xb2, 0x02, 0xb4, 0x77, 0xa7, 0x97, 0xe9, 0x84, 0xe6, 0xa2, 0xb9, 0x76,
+            0xca, 0x4c, 0xb7, 0xd3, 0x94, 0x40, 0x04, 0xb3, 0xef, 0x6c, 0xde, 0x80,
+            0x34, 0x1c, 0x78, 0x53, 0xa2, 0xdd, 0x7e, 0x2f, 0x9e, 0x08, 0xcd, 0xa6,
+            0xd7, 0x37, 0x28, 0x12, 0xcf, 0x75, 0xe8, 0xc7, 0x74, 0x1f, 0xb6, 0x56,
+            0xce, 0xc3, 0xa1, 0x19, 0x77, 0x2e, 0x2e, 0x71, 0x5c, 0xeb, 0xc7, 0x64,
+            0x33, 0xfa, 0xfd, 0x4d
+          };
+          int res = blake2b(out, "blake2", "blake2", 64, 6, 6);
+          if (res == 0) {
+            if (memcmp(out, expected, 64) == 0) {
+              return 0;
+            } else {
+              return 1;
+            }
+          } else {
+            return 1;
+          }
+      }
+    EOS
+    system ENV["CC"], "blake2test.c", "-lb2", "-o", "b2test"
+    system "./b2test"
+  end
+end