PBKDF2 & HKDF derive bits should throw OperationError when length is zero #275
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twiss
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Sep 2, 2021
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@littledivy Thanks for the PR! |
javifernandez
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Jul 10, 2024
https://bugs.webkit.org/show_bug.cgi?id=276394 Reviewed by NOBODY (OOPS!). The PR#345 [1] to the WebCryptoAPI spec defines now the 'length' parameter as optional, defaulting to 'null'. This change tries to solve a long-standing interoperability issue in the deriveBits operation. This patch implements the required changes in the IDL so that the 'length' parameter is declared as optional, with 'null' as default value when omitted. The affected algorithms (ECDH, HKDF, PBKDF2 and X25519) are adapted to the parameter's new type. The PR#43400 [2] defined tests for the new behavior of the afected algorithms, which Chrome passes except for the case of HKDF with length=0 (see the PR#275 [3] for details) [1] w3c/webcrypto#345 [2] web-platform-tests/wpt#43400 [3] w3c/webcrypto#275 * LayoutTests/imported/w3c/web-platform-tests/WebCryptoAPI/derive_bits_keys/derived_bits_length.https.any-expected.txt: * LayoutTests/imported/w3c/web-platform-tests/WebCryptoAPI/derive_bits_keys/derived_bits_length.https.any.worker-expected.txt: * Source/WebCore/crypto/CryptoAlgorithm.cpp: (WebCore::CryptoAlgorithm::deriveBits): * Source/WebCore/crypto/CryptoAlgorithm.h: * Source/WebCore/crypto/SubtleCrypto.cpp: (WebCore::SubtleCrypto::deriveKey): (WebCore::SubtleCrypto::deriveBits): * Source/WebCore/crypto/SubtleCrypto.h: * Source/WebCore/crypto/SubtleCrypto.idl: * Source/WebCore/crypto/algorithms/CryptoAlgorithmECDH.cpp: (WebCore::CryptoAlgorithmECDH::deriveBits): * Source/WebCore/crypto/algorithms/CryptoAlgorithmECDH.h: * Source/WebCore/crypto/algorithms/CryptoAlgorithmHKDF.cpp: (WebCore::CryptoAlgorithmHKDF::deriveBits): * Source/WebCore/crypto/algorithms/CryptoAlgorithmHKDF.h: * Source/WebCore/crypto/algorithms/CryptoAlgorithmPBKDF2.cpp: (WebCore::CryptoAlgorithmPBKDF2::deriveBits): * Source/WebCore/crypto/algorithms/CryptoAlgorithmPBKDF2.h: * Source/WebCore/crypto/algorithms/CryptoAlgorithmX25519.cpp: (WebCore::CryptoAlgorithmX25519::deriveBits): * Source/WebCore/crypto/algorithms/CryptoAlgorithmX25519.h:
twiss
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Nov 6, 2024
* Revert "Throw an OperationError in the PBKDF2 and HKDF derive bits operations if length is zero (#275)" This reverts commit 6438d87. * Properly handle length=0 in the PBKDF2 derive bits operation RFC 8018 does not allow passing dkLen=0. Therefore, we explicitly return an empty ArrayBuffer in that case. * Explicitly return `ArrayBuffer`s in HKDF and PBKDF2 The algorithm registrations state that they return `ArrayBuffer`s, but the operations did not.
javifernandez
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Nov 8, 2024
The PR#380 [1] changed the PBKDF2 deriveBits operation to allow zero length and introduced an additional step to return an empty string in that case. It also reversted the PR#275 [2] so that HKDF also handles the zero length in the same way. This PR updates the tests cases affecting this 2 algorithms on the cases where zero was passed in the length parameter. [1] w3c/webcrypto#380 [2] w3c/webcrypto#275
javifernandez
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Nov 8, 2024
The PR#380 [1] changed the PBKDF2 deriveBits operation to allow zero length and introduced an additional step to return an empty string in that case. It also reversted the PR#275 [2] so that HKDF also handles the zero length in the same way. This PR updates the tests cases affecting this 2 algorithms on the cases where zero was passed in the length parameter. [1] w3c/webcrypto#380 [2] w3c/webcrypto#275
javifernandez
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Nov 8, 2024
The PR#380 [1] changed the PBKDF2 deriveBits operation to allow zero length and introduced an additional step to return an empty string in that case. It also reversted the PR#275 [2] so that HKDF also handles the zero length in the same way. This PR updates the tests cases affecting this 2 algorithms on the cases where zero was passed in the length parameter. [1] w3c/webcrypto#380 [2] w3c/webcrypto#275
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Closes #274