From 8c9d298dc9bb185fa9b1df507511bf1ee197d73e Mon Sep 17 00:00:00 2001
From: Lee Miller <lee.miller@tutanota.com>
Date: Sat, 24 Dec 2022 23:33:51 +0200
Subject: [PATCH] Update tests: reproduce the MAC failure.

---
 test.js | 50 +++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 41 insertions(+), 9 deletions(-)

diff --git a/test.js b/test.js
index 5e2c932..b57ef0f 100644
--- a/test.js
+++ b/test.js
@@ -195,15 +195,35 @@ describe("ECDH", function() {
 });
 
 describe("ECIES", function() {
-  var ephemPrivateKey = Buffer.alloc(32);
-  ephemPrivateKey.fill(4);
-  var ephemPublicKey = eccrypto.getPublic(ephemPrivateKey);
-  var iv = Buffer.alloc(16);
-  iv.fill(5);
-  var ciphertext = Buffer.from("bbf3f0e7486b552b0e2ba9c4ca8c4579", "hex");
-  var mac = Buffer.from("dbb14a9b53dbd6b763dba24dc99520f570cdf8095a8571db4bf501b535fda1ed", "hex");
-  var encOpts = {ephemPrivateKey: ephemPrivateKey, iv: iv};
-  var decOpts = {iv: iv, ephemPublicKey: ephemPublicKey, ciphertext: ciphertext, mac: mac};
+    var ephemPrivateKey = Buffer.alloc(32);
+    ephemPrivateKey.fill(4);
+    var ephemPublicKey = eccrypto.getPublic(ephemPrivateKey);
+    var iv = Buffer.alloc(16);
+    iv.fill(5);
+    var ciphertext = Buffer.from("bbf3f0e7486b552b0e2ba9c4ca8c4579", "hex");
+    var mac = Buffer.from("dbb14a9b53dbd6b763dba24dc99520f570cdf8095a8571db4bf501b535fda1ed", "hex");
+    var encOpts = {ephemPrivateKey: ephemPrivateKey, iv: iv};
+    var decOpts = {iv: iv, ephemPublicKey: ephemPublicKey, ciphertext: ciphertext, mac: mac};
+
+    // To comply to the Spec
+    const samplePrivateKey = Buffer.from(
+	"5be6facd941b76e9d3ead03029fbdb6b6e0809293f7fb197d0c51f84e96b8ba4",
+	"hex"),
+	  sampleIV = Buffer.from("bddb7c2829b08038753084a2f3991681", "hex"),
+	  // notice the simple (not encoded) pubkey here
+	  samplePublicKey = Buffer.from(
+	      "0409d4e5c0ab3d25fe048c64c9da1a242c7f19417e9517cd266950d72c755713585c6178e97fe092fc897c9a1f1720d5770ae8eaad2fa8fcbd08e9324a5dde1857", "hex"),
+	  sampleData = "The quick brown fox jumps over the lazy dog.",
+	  sampleCiphertext = Buffer.from(
+	      "64203d5b24688e2547bba345fa139a5a1d962220d4d48a0cf3b1572c0d95b61643a6f9a0d75af7eacc1bd957147bf723", "hex"),
+	  // a pubkey encoded with curve number and length
+	  sampleEphemPublicKey = Buffer.from(
+	      "02ca00200293213dcf1388b61c2ae5cf80fee6ffffc049a2f9fe7365fe3867813ca812920020df94686c6afb565ac6149b153d61b3b287ee2c7f997c14238796c12b43a3865a",
+	      "hex"),
+	  sampleMAC = Buffer.from(
+	      "f2526d61b4851fb23409863826fd206165edc021368c7946571cead69046e619",
+	      "hex");
+
 
   it("should encrypt", function() {
     return eccrypto.encrypt(publicKeyB, Buffer.from("test"), encOpts)
@@ -266,6 +286,18 @@ describe("ECIES", function() {
         });
   });
 
+    // To comply to the Spec
+    it("should comply to the Spec", function() {
+	return eccrypto.encrypt(samplePublicKey, sampleData, {
+	    iv: sampleIV, ephemPrivateKey: samplePrivateKey
+	}).then(
+	    function(enc) {
+		expect(bufferEqual(enc.iv, sampleIV)).to.be.true;
+		expect(bufferEqual(enc.ciphertext, sampleCiphertext)).to.be.true;
+		expect(bufferEqual(enc.ephemPublicKey, sampleEphemPublicKey)).to.be.true;
+		expect(bufferEqual(enc.mac, sampleMAC)).to.be.true;
+	    });
+    });
 
   it("should reject promise on bad private key when decrypting", function(done) {
     eccrypto.encrypt(publicKeyA, Buffer.from("test")).then(function(enc) {