Document and test maximum deriveBits length for ECDH curves#289
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Updates documentation on EcdhPrivateKey.deriveBits to include the maximum number of bits that can be derived for each curve: * EllipticCurve.p256 — up to 256 bits * EllipticCurve.p384 — up to 384 bits * EllipticCurve.p521 — up to 528 bits Also adds test coverage for all three curves at their maximum derive lengths in the ECDH test runner. Fixes google#130
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mosuem
approved these changes
Jul 20, 2026
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Fixes #130
Updates
EcdhPrivateKey.deriveBitsdocumentation to specify the maximum number of bits that can be derived for each supported elliptic curve:EllipticCurve.p256— up to 256 bitsEllipticCurve.p384— up to 384 bitsEllipticCurve.p521— up to 528 bitsAlso adds test coverage for all three curves at their maximum derive lengths in the ECDH test runner (previously only P-256 with 32 bytes was tested).