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LibWeb: Fix X25519 JWK key export format

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The presence of padding in the base64 fields made plenty of WPT tests
fail.

The issue was discovered while implementing `wrapKey` and `unwrapKey` in
the next commits.
This commit is contained in:
devgianlu 2024-12-14 11:11:57 +01:00 • committed by Andreas Kling
parent 08af878466
commit ac99e2791f
Notes: github-actions[bot] 2024-12-16 10:36:27 +00:00
2 changed files with 25 additions and 25 deletions
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6
Libraries/LibWeb/Crypto/CryptoAlgorithms.cpp
View file

@ -5222,7 +5222,7 @@ WebIDL::ExceptionOr<GC::Ref<JS::Object>> X25519::export_key(Bindings::KeyFormat
// 4. Set the x attribute of jwk according to the definition in Section 2 of [RFC8037].
if (key->type() == Bindings::KeyType::Public) {
auto public_key = handle.get<ByteBuffer>();
jwk.x = TRY_OR_THROW_OOM(vm, encode_base64url(public_key));
jwk.x = TRY_OR_THROW_OOM(vm, encode_base64url(public_key, AK::OmitPadding::Yes));
} else {
// The "x" parameter of the "epk" field is set as follows:
// Apply the appropriate ECDH function to the ephemeral private key (as scalar input)
@ -5230,14 +5230,14 @@ WebIDL::ExceptionOr<GC::Ref<JS::Object>> X25519::export_key(Bindings::KeyFormat
// The base64url encoding of the output is the value for the "x" parameter of the "epk" field.
::Crypto::Curves::X25519 curve;
auto public_key = TRY_OR_THROW_OOM(vm, curve.generate_public_key(handle.get<ByteBuffer>()));
jwk.x = TRY_OR_THROW_OOM(vm, encode_base64url(public_key));
jwk.x = TRY_OR_THROW_OOM(vm, encode_base64url(public_key, AK::OmitPadding::Yes));
}
// 5. If the [[type]] internal slot of key is "private"
if (key->type() == Bindings::KeyType::Private) {
// 1. Set the d attribute of jwk according to the definition in Section 2 of [RFC8037].
auto private_key = handle.get<ByteBuffer>();
jwk.d = TRY_OR_THROW_OOM(vm, encode_base64url(private_key));
jwk.d = TRY_OR_THROW_OOM(vm, encode_base64url(private_key, AK::OmitPadding::Yes));
}
// 6. Set the key_ops attribute of jwk to the usages attribute of key.