tests: add tests for ecdsa.verify

Author: dcousens

src/ecdsa.js

@@ -76,14 +76,6 @@ function sign(curve, hash, d) {
   return new ECSignature(r, s)
 }
 
-function verify(curve, hash, signature, Q) {
-  // 1.4.2 H = Hash(M), already done by the user
-  // 1.4.3 e = H
-  var e = BigInteger.fromBuffer(hash)
-
-  return verifyRaw(curve, e, signature, Q)
-}
-
 function verifyRaw(curve, e, signature, Q) {
   var n = curve.n
   var G = curve.G
@@ -114,6 +106,14 @@ function verifyRaw(curve, e, signature, Q) {
   return v.equals(r)
 }
 
+function verify(curve, hash, signature, Q) {
+  // 1.4.2 H = Hash(M), already done by the user
+  // 1.4.3 e = H
+  var e = BigInteger.fromBuffer(hash)
+
+  return verifyRaw(curve, e, signature, Q)
+}
+
 /**
   * Recover a public key from a signature.
   *

test/ecdsa.js

@@ -115,31 +115,35 @@ describe('ecdsa', function() {
     })
   })
 
-  describe('verifyRaw', function() {
+  describe('verify/verifyRaw', function() {
     fixtures.valid.forEach(function(f) {
       it('verifies a valid signature for \"' + f.message + '\"', function() {
         var d = BigInteger.fromHex(f.d)
-        var e = BigInteger.fromBuffer(crypto.sha256(f.message))
+        var H = crypto.sha256(f.message)
+        var e = BigInteger.fromBuffer(H)
         var signature = new ECSignature(
           new BigInteger(f.signature.r),
           new BigInteger(f.signature.s)
         )
         var Q = curve.G.multiply(d)
 
+        assert(ecdsa.verify(curve, H, signature, Q))
         assert(ecdsa.verifyRaw(curve, e, signature, Q))
       })
     })
 
     fixtures.invalid.verifyRaw.forEach(function(f) {
       it('fails to verify with ' + f.description, function() {
+        var H = crypto.sha256(f.message)
+        var e = BigInteger.fromBuffer(H)
         var d = BigInteger.fromHex(f.d)
-        var e = BigInteger.fromHex(f.e)
         var signature = new ECSignature(
           new BigInteger(f.signature.r),
           new BigInteger(f.signature.s)
         )
         var Q = curve.G.multiply(d)
 
+        assert.equal(ecdsa.verify(curve, H, signature, Q), false)
         assert.equal(ecdsa.verifyRaw(curve, e, signature, Q), false)
       })
     })

test/fixtures/ecdsa.json

@@ -148,7 +148,7 @@
       {
         "description": "The wrong signature",
         "d": "01",
-        "e": "06ef2b193b83b3d701f765f1db34672ab84897e1252343cc2197829af3a30456",
+        "message": "foo",
         "signature": {
           "r": "38341707918488238920692284707283974715538935465589664377561695343399725051885",
           "s": "3180566392414476763164587487324397066658063772201694230600609996154610926757"
@@ -157,7 +157,7 @@
       {
         "description": "Invalid r value (< 0)",
         "d": "01",
-        "e": "01",
+        "message": "foo",
         "signature": {
           "r": "-01",
           "s": "02"
@@ -166,7 +166,7 @@
       {
         "description": "Invalid r value (== 0)",
         "d": "01",
-        "e": "01",
+        "message": "foo",
         "signature": {
           "r": "00",
           "s": "02"
@@ -175,7 +175,7 @@
       {
         "description": "Invalid r value (>= n)",
         "d": "01",
-        "e": "01",
+        "message": "foo",
         "signature": {
           "r": "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141",
           "s": "02"
@@ -184,7 +184,7 @@
       {
         "description": "Invalid s value (< 0)",
         "d": "01",
-        "e": "01",
+        "message": "foo",
         "signature": {
           "r": "02",
           "s": "-01"
@@ -193,7 +193,7 @@
       {
         "description": "Invalid s value (== 0)",
         "d": "01",
-        "e": "01",
+        "message": "foo",
         "signature": {
           "r": "02",
           "s": "00"
@@ -202,7 +202,7 @@
       {
         "description": "Invalid s value (>= n)",
         "d": "01",
-        "e": "01",
+        "message": "foo",
         "signature": {
           "r": "02",
           "s": "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141"
@@ -211,12 +211,12 @@
       {
         "description": "Invalid r, s values (r = s = -n)",
         "d": "01",
-        "e": "01",
+        "message": "foo",
         "signature": {
           "r": "-115792089237316195423570985008687907852837564279074904382605163141518161494337",
           "s": "-115792089237316195423570985008687907852837564279074904382605163141518161494337"
         }
       }
     ]
   }
-}
+}