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crypto: multiple webcrypto fixes #43431

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crypto: multiple webcrypto fixes #43431

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4df7bc5
crypto: fix webcrypto deriveBits for non-byte lengths
panva Jun 14, 2022
7bb4988
crypto: fix webcrypto AES-KW keys accepting encrypt/decrypt usages
panva Jun 14, 2022
514e8a5
crypto: fix webcrypto RSA generateKey() use of publicExponent
panva Jun 14, 2022
55be639
crypto: fix webcrypto digest() invalid algorithm
panva Jun 14, 2022
6de6ec9
crypto: fix webcrypto generateKey() with empty usages
panva Jun 14, 2022
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10 changes: 7 additions & 3 deletions lib/internal/crypto/aes.js
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Original file line number Diff line number Diff line change
Expand Up @@ -230,13 +230,17 @@ async function aesGenerateKey(algorithm, extractable, keyUsages) {
validateInteger(length, 'algorithm.length');
validateOneOf(length, 'algorithm.length', kAesKeyLengths);

const usageSet = new SafeSet(keyUsages);
const checkUsages = ['wrapKey', 'unwrapKey'];
if (name !== 'AES-KW')
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ArrayPrototypePush(checkUsages, 'encrypt', 'decrypt');

if (hasAnyNotIn(usageSet, ['encrypt', 'decrypt', 'wrapKey', 'unwrapKey'])) {
const usagesSet = new SafeSet(keyUsages);
if (hasAnyNotIn(usagesSet, checkUsages)) {
throw lazyDOMException(
'Unsupported key usage for an AES key',
'SyntaxError');
}

return new Promise((resolve, reject) => {
generateKey('aes', { length }, (err, key) => {
if (err) {
Expand All @@ -249,7 +253,7 @@ async function aesGenerateKey(algorithm, extractable, keyUsages) {
resolve(new InternalCryptoKey(
key,
{ name, length },
ArrayFrom(usageSet),
ArrayFrom(usagesSet),
extractable));
});
});
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18 changes: 10 additions & 8 deletions test/parallel/test-webcrypto-keygen.js
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Original file line number Diff line number Diff line change
Expand Up @@ -211,14 +211,16 @@ const vectors = {
if (!vectors[name].usages.includes(usage))
invalidUsages.push(usage);
});
return assert.rejects(
subtle.generateKey(
{
name, ...vectors[name].algorithm
},
true,
invalidUsages),
{ message: /Unsupported key usage/ });
for (const invalidUsage of invalidUsages) {
await assert.rejects(
subtle.generateKey(
{
name, ...vectors[name].algorithm
},
true,
[...vectors[name].usages, invalidUsage]),
{ message: /Unsupported key usage/ });
}
}

const tests = Object.keys(vectors).map(test);
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