From 4a32468d7d9836f6026d91702cbb2ae14cefec78 Mon Sep 17 00:00:00 2001
From: Didactic Drunk <1479616+didactic-drunk@users.noreply.github.com>
Date: Mon, 14 Jun 2021 16:50:32 -0700
Subject: [PATCH] Add ClassMethods

---
 spec/not_spec.cr                   |  6 ++++++
 src/crypto-secret/class_methods.cr | 10 ++++++++++
 src/crypto-secret/secret.cr        |  1 +
 src/crypto-secret/stateful.cr      |  4 ++++
 src/crypto-secret/stateless.cr     |  4 ++++
 5 files changed, 25 insertions(+)
 create mode 100644 src/crypto-secret/class_methods.cr

diff --git a/spec/not_spec.cr b/spec/not_spec.cr
index 92faeed..9144077 100644
--- a/spec/not_spec.cr
+++ b/spec/not_spec.cr
@@ -27,4 +27,10 @@ describe Crypto::Secret::Not do
     secret.to_s.should_not match /Bytes|Slice/
     secret.inspect.should_not match /Bytes|Slice/
   end
+
+  it "returns a random secret" do
+    secret1 = Crypto::Secret::Not.new 8
+    secret2 = Crypto::Secret::Not.random 8
+    secret1.should_not eq secret2
+  end
 end
diff --git a/src/crypto-secret/class_methods.cr b/src/crypto-secret/class_methods.cr
new file mode 100644
index 0000000..6ba45b6
--- /dev/null
+++ b/src/crypto-secret/class_methods.cr
@@ -0,0 +1,10 @@
+module Crypto::Secret::ClassMethods
+  # Returns a **readonly** random Secret
+  def random(size)
+    buf = new(size)
+    buf.readwrite do |slice|
+      Random::Secure.random_bytes slice
+    end
+    buf.readonly
+  end
+end
diff --git a/src/crypto-secret/secret.cr b/src/crypto-secret/secret.cr
index bea8bb6..d2b122b 100644
--- a/src/crypto-secret/secret.cr
+++ b/src/crypto-secret/secret.cr
@@ -1,4 +1,5 @@
 require "./lib"
+require "./class_methods"
 
 # Interface to hold sensitive information (often cryptographic keys)
 #
diff --git a/src/crypto-secret/stateful.cr b/src/crypto-secret/stateful.cr
index 5bffb71..036a724 100644
--- a/src/crypto-secret/stateful.cr
+++ b/src/crypto-secret/stateful.cr
@@ -12,6 +12,10 @@ module Crypto::Secret
   module Stateful
     include Crypto::Secret
 
+    macro included
+      extend ClassMethods
+    end
+
     @state = State::Readwrite
 
     # Temporarily make buffer readwrite within the block returning to the prior state on exit.
diff --git a/src/crypto-secret/stateless.cr b/src/crypto-secret/stateless.cr
index 9061830..fdbae57 100644
--- a/src/crypto-secret/stateless.cr
+++ b/src/crypto-secret/stateless.cr
@@ -6,6 +6,10 @@ require "./secret"
 module Crypto::Secret::Stateless
   include Crypto::Secret
 
+  macro included
+    extend ClassMethods
+  end
+
   # Not thread safe
   def readwrite
   end