From 10630873ebaa42381c5871e20336fbfb46564ac8 Mon Sep 17 00:00:00 2001
From: Daniel Cousens <github@dcousens.com>
Date: Sat, 11 Oct 2014 13:47:32 +1100
Subject: [PATCH] tests: add tests for ecdsa.verify
---
src/ecdsa.js | 16 ++++++++--------
test/ecdsa.js | 10 +++++++---
test/fixtures/ecdsa.json | 18 +++++++++---------
3 files changed, 24 insertions(+), 20 deletions(-)
diff --git a/src/ecdsa.js b/src/ecdsa.js
index 7b9db0b..75450dc 100644
--- a/src/ecdsa.js
+++ b/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.
*
diff --git a/test/ecdsa.js b/test/ecdsa.js
index 84c0b44..58a0076 100644
--- a/test/ecdsa.js
+++ b/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)
})
})
diff --git a/test/fixtures/ecdsa.json b/test/fixtures/ecdsa.json
index ea53d7c..faad864 100644
--- a/test/fixtures/ecdsa.json
+++ b/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"
@@ -211,7 +211,7 @@
{
"description": "Invalid r, s values (r = s = -n)",
"d": "01",
- "e": "01",
+ "message": "foo",
"signature": {
"r": "-115792089237316195423570985008687907852837564279074904382605163141518161494337",
"s": "-115792089237316195423570985008687907852837564279074904382605163141518161494337"
@@ -219,4 +219,4 @@
}
]
}
-}
+}
\ No newline at end of file