Add a Homebrew formula for Tinkey.

To install on Linux and macOS, run:

brew tap google/tink https://github.com/google/tink
brew install tinkey

PiperOrigin-RevId: 321201344

tinkey.rb

@@ -0,0 +1,23 @@
+# A Homebrew formula for Tinkey on Linux and macOS.
+# Usage:
+# brew tap google/tink https://github.com/google/tink
+# brew install tinkey
+
+class Tinkey < Formula
+  desc "A command line tool to generate and manipulate keysets for the Tink cryptography library"
+  homepage "https://github.com/google/tink/tree/master/tools/tinkey"
+  url "https://storage.googleapis.com/tinkey/tinkey-darwin-x86_64-1.4.0.tar.gz"
+  sha256 "cd4a79a3c78084e6d0b4d82cc0e2f903cb0f18d6d75c7c897512f7804be50dba"
+
+  on_linux do
+    url "https://storage.googleapis.com/tinkey/tinkey-linux-x86_64-1.4.0.tar.gz"
+    sha256 "b36521a05fc59b6541bd4119df9f1cc392a509ed914efe763b92c50b87f4159f"
+  end
+
+  bottle :unneeded
+
+  def install
+    bin.install "tinkey"
+    bin.install "tinkey_deploy.jar"
+  end
+end