1 files changed, 54 insertions, 0 deletions
diff --git a/test/openssl/test_hmac.rb b/test/openssl/test_hmac.rb
new file mode 100644
index 00000000..9cb3c5a8
--- /dev/null
+++ b/test/openssl/test_hmac.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+require_relative 'utils'
+
+if defined?(OpenSSL)
+
+class OpenSSL::TestHMAC < OpenSSL::TestCase
+  def test_hmac
+    # RFC 2202 2. Test Cases for HMAC-MD5
+    hmac = OpenSSL::HMAC.new(["0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"].pack("H*"), "MD5")
+    hmac.update("Hi There")
+    assert_equal ["9294727a3638bb1c13f48ef8158bfc9d"].pack("H*"), hmac.digest
+    assert_equal "9294727a3638bb1c13f48ef8158bfc9d", hmac.hexdigest
+
+    # RFC 4231 4.2. Test Case 1
+    hmac = OpenSSL::HMAC.new(["0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"].pack("H*"), "SHA224")
+    hmac.update("Hi There")
+    assert_equal ["896fb1128abbdf196832107cd49df33f47b4b1169912ba4f53684b22"].pack("H*"), hmac.digest
+    assert_equal "896fb1128abbdf196832107cd49df33f47b4b1169912ba4f53684b22", hmac.hexdigest
+  end
+
+  def test_dup
+    h1 = OpenSSL::HMAC.new("KEY", "MD5")
+    h1.update("DATA")
+    h = h1.dup
+    assert_equal(h1.digest, h.digest, "dup digest")
+  end
+
+  def test_binary_update
+    data = "Lücíllé: Bût... yøü sáîd hé wås âlrîght.\nDr. Físhmån: Yés. Hé's løst hîs léft hånd, sø hé's gøîng tø bé åll rîght"
+    hmac = OpenSSL::HMAC.new("qShkcwN92rsM9nHfdnP4ugcVU2iI7iM/trovs01ZWok", "SHA256")
+    result = hmac.update(data).hexdigest
+    assert_equal "a13984b929a07912e4e21c5720876a8e150d6f67f854437206e7f86547248396", result
+  end
+
+  def test_reset_keep_key
+    h1 = OpenSSL::HMAC.new("KEY", "MD5")
+    first = h1.update("test").hexdigest
+    h1.reset
+    second = h1.update("test").hexdigest
+    assert_equal first, second
+  end
+
+  def test_eq
+    h1 = OpenSSL::HMAC.new("KEY", "MD5")
+    h2 = OpenSSL::HMAC.new("KEY", OpenSSL::Digest.new("MD5"))
+    h3 = OpenSSL::HMAC.new("FOO", "MD5")
+
+    assert_equal h1, h2
+    refute_equal h1, h2.digest
+    refute_equal h1, h3
+  end
+end
+
+end