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test-webcrypto-sign-verify-eddsa.js
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test-webcrypto-sign-verify-eddsa.js
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'use strict';
const common = require('../common');
if (!common.hasCrypto)
common.skip('missing crypto');
const assert = require('assert');
const { subtle } = globalThis.crypto;
const vectors = require('../fixtures/crypto/eddsa')();
async function testVerify({ name,
publicKeyBuffer,
privateKeyBuffer,
signature,
data }) {
const [
publicKey,
noVerifyPublicKey,
privateKey,
hmacKey,
rsaKeys,
ecKeys,
] = await Promise.all([
subtle.importKey(
'spki',
publicKeyBuffer,
{ name },
false,
['verify']),
subtle.importKey(
'spki',
publicKeyBuffer,
{ name },
false,
[ /* No usages */ ]),
subtle.importKey(
'pkcs8',
privateKeyBuffer,
{ name },
false,
['sign']),
subtle.generateKey(
{ name: 'HMAC', hash: 'SHA-256' },
false,
['sign']),
subtle.generateKey(
{
name: 'RSA-PSS',
modulusLength: 1024,
publicExponent: new Uint8Array([1, 0, 1]),
hash: 'SHA-256',
},
false,
['sign']),
subtle.generateKey(
{
name: 'ECDSA',
namedCurve: 'P-256'
},
false,
['sign']),
]);
assert(await subtle.verify({ name }, publicKey, signature, data));
// Test verification with altered buffers
const copy = Buffer.from(data);
const sigcopy = Buffer.from(signature);
const p = subtle.verify({ name }, publicKey, sigcopy, copy);
copy[0] = 255 - copy[0];
sigcopy[0] = 255 - sigcopy[0];
assert(await p);
// Test failure when using wrong key
await assert.rejects(
subtle.verify({ name }, privateKey, signature, data), {
message: /Unable to use this key to verify/
});
await assert.rejects(
subtle.verify({ name }, noVerifyPublicKey, signature, data), {
message: /Unable to use this key to verify/
});
// Test failure when using the wrong algorithms
await assert.rejects(
subtle.verify({ name }, hmacKey, signature, data), {
message: /Unable to use this key to verify/
});
await assert.rejects(
subtle.verify({ name }, rsaKeys.publicKey, signature, data), {
message: /Unable to use this key to verify/
});
await assert.rejects(
subtle.verify({ name }, ecKeys.publicKey, signature, data), {
message: /Unable to use this key to verify/
});
// Test failure when signature is altered
{
const copy = Buffer.from(signature);
copy[0] = 255 - copy[0];
assert(!(await subtle.verify(
{ name },
publicKey,
copy,
data)));
assert(!(await subtle.verify(
{ name },
publicKey,
copy.slice(1),
data)));
}
// Test failure when data is altered
{
const copy = Buffer.from(data);
copy[0] = 255 - copy[0];
assert(!(await subtle.verify({ name }, publicKey, signature, copy)));
}
}
async function testSign({ name,
publicKeyBuffer,
privateKeyBuffer,
signature,
data }) {
const [
publicKey,
noSignPrivateKey,
privateKey,
hmacKey,
rsaKeys,
ecKeys,
] = await Promise.all([
subtle.importKey(
'spki',
publicKeyBuffer,
{ name },
false,
['verify']),
subtle.importKey(
'pkcs8',
privateKeyBuffer,
{ name },
false,
[ /* No usages */ ]),
subtle.importKey(
'pkcs8',
privateKeyBuffer,
{ name },
false,
['sign']),
subtle.generateKey(
{ name: 'HMAC', hash: 'SHA-256' },
false,
['sign']),
subtle.generateKey(
{
name: 'RSA-PSS',
modulusLength: 1024,
publicExponent: new Uint8Array([1, 0, 1]),
hash: 'SHA-256',
},
false,
['sign']),
subtle.generateKey(
{
name: 'ECDSA',
namedCurve: 'P-256'
},
false,
['sign']),
]);
{
const sig = await subtle.sign({ name }, privateKey, data);
assert.strictEqual(sig.byteLength, signature.byteLength);
assert(await subtle.verify({ name }, publicKey, sig, data));
}
{
const copy = Buffer.from(data);
const p = subtle.sign({ name }, privateKey, copy);
copy[0] = 255 - copy[0];
const sig = await p;
assert(await subtle.verify({ name }, publicKey, sig, data));
}
// Test failure when using wrong key
await assert.rejects(
subtle.sign({ name }, publicKey, data), {
message: /Unable to use this key to sign/
});
// Test failure when no sign usage
await assert.rejects(
subtle.sign({ name }, noSignPrivateKey, data), {
message: /Unable to use this key to sign/
});
// Test failure when using the wrong algorithms
await assert.rejects(
subtle.sign({ name }, hmacKey, data), {
message: /Unable to use this key to sign/
});
await assert.rejects(
subtle.sign({ name }, rsaKeys.privateKey, data), {
message: /Unable to use this key to sign/
});
await assert.rejects(
subtle.sign({ name }, ecKeys.privateKey, data), {
message: /Unable to use this key to sign/
});
}
(async function() {
const variations = [];
vectors.forEach((vector) => {
variations.push(testVerify(vector));
variations.push(testSign(vector));
});
await Promise.all(variations);
})().then(common.mustCall());
// Ed448 context
{
const vector = vectors.find(({ name }) => name === 'Ed448');
Promise.all([
subtle.importKey(
'pkcs8',
vector.privateKeyBuffer,
{ name: 'Ed448' },
false,
['sign']),
subtle.importKey(
'spki',
vector.publicKeyBuffer,
{ name: 'Ed448' },
false,
['verify']),
]).then(async ([privateKey, publicKey]) => {
const sig = await subtle.sign({ name: 'Ed448', context: Buffer.alloc(0) }, privateKey, vector.data);
assert.deepStrictEqual(Buffer.from(sig), vector.signature);
assert.strictEqual(
await subtle.verify({ name: 'Ed448', context: Buffer.alloc(0) }, publicKey, sig, vector.data), true);
await assert.rejects(subtle.sign({ name: 'Ed448', context: Buffer.alloc(1) }, privateKey, vector.data), {
message: /Non zero-length context is not yet supported/
});
await assert.rejects(subtle.verify({ name: 'Ed448', context: Buffer.alloc(1) }, publicKey, sig, vector.data), {
message: /Non zero-length context is not yet supported/
});
}).then(common.mustCall());
}