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tests: add tests for ecdsa.verify

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This commit is contained in:
Daniel Cousens 2014-10-11 13:47:32 +11:00
parent 98bc1685b3
commit 10630873eb
3 changed files with 24 additions and 20 deletions
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16
src/ecdsa.js
View file

@ -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.
*

10
test/ecdsa.js
View file

@ -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)
})
})

18
test/fixtures/ecdsa.json vendored
View file

@ -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 @@
}
]
}
}
}