Initial code

shard.yml

@@ -4,6 +4,6 @@ version: 0.1.0
 authors:
   - Didactic Drunk <1479616+didactic-drunk@users.noreply.github.com>
 
-crystal: 1.0.0
+crystal: ">= 0.37"
 
 license: MIT

spec/crypto_secret_spec.cr

@@ -0,0 +1,7 @@
+require "./spec_helper"
+
+describe Crypto::Secret do
+  pending "works" do
+    false.should eq(true)
+  end
+end

spec/not_spec.cr

@@ -0,0 +1,10 @@
+require "./spec_helper"
+require "../src/crypto_secret/not"
+
+describe Crypto::Secret::Not do
+  it "works" do
+    ksize = 32
+    secret = Crypto::Secret::Not.new ksize
+    secret.to_slice.should eq Bytes.new ksize
+  end
+end

spec/spec_helper.cr

@@ -0,0 +1,2 @@
+require "spec"
+require "../src/crypto_secret"

src/crypto_secret.cr

@@ -0,0 +1,30 @@
+# Interface to hold sensitive information (often cryptographic keys)
+#
+#
+@[Experimental]
+module Crypto::Secret
+  abstract def to_slice : Bytes
+
+  def readwrite
+  end
+
+  def readonly
+  end
+
+  def noaccess
+  end
+
+  def wipe
+    # Todo: implement wiping
+  end
+
+  def wipe
+    yield
+  ensure
+    wipe
+  end
+
+  def finalize
+    wipe
+  end
+end

src/crypto_secret/not.cr

@@ -0,0 +1,16 @@
+# A not very secret secret
+#
+# Not locked in memory
+# Not access protected
+# No guard pages
+struct Crypto::Secret::Not
+  include Crypto::Secret
+
+  def initialize(size)
+    @bytes = Bytes.new size
+  end
+
+  def to_slice : Bytes
+    @bytes
+  end
+end