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LibWeb: Don't import raw X25519 key of incorrect length

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This commit is contained in:
Abhinav
2025-07-23 15:22:37 -04:00
committed by Andrew Kaster
parent 8569124b87
commit ea8538ea49
Notes: github-actions[bot] 2025-07-26 16:44:27 +00:00 
Author: https://github.com/hopafoot 🔰
Commit: https://github.com/LadybirdBrowser/ladybird/commit/ea8538ea49d
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5582
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/trflynn89
1 changed files with 5 additions and 0 deletions
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5
Libraries/LibWeb/Crypto/CryptoAlgorithms.cpp
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@@ -7258,6 +7258,11 @@ WebIDL::ExceptionOr<GC::Ref<CryptoKey>> X25519::import_key([[maybe_unused]] Web:
if (!usages.is_empty())
return WebIDL::SyntaxError::create(m_realm, "Usages must be empty"_string);
// AD-HOC: if the key length is not 32 bytes, then throw a DataError.
// See: https://github.com/w3c/webcrypto/issues/409
if (32 != key_data.get<ByteBuffer>().size())
return WebIDL::DataError::create(m_realm, "X25519 key must be 32 bytes"_string);
// 2. Let algorithm be a new KeyAlgorithm object.
auto algorithm = KeyAlgorithm::create(m_realm);