Release zcash_note_encryption version 0.4.2 - #14
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…ent hook Trial decryption computes ka_agree_dec for many ephemeral keys against the same incoming viewing key. For domains where same-scalar multiplications can share work (for example, lockstep ladders over a shared batched field inversion), this dominates the cost of batched trial decryption, but the per-item Domain::ka_agree_dec interface gives implementations no opportunity to exploit it. This adds a provided BatchDomain method that computes the agreements for a whole batch against one viewing key, defaulting to the per-item computation, and routes the batch module's shared-secret derivation through it (one call per viewing key, preserving the output-major order the downstream batch KDF expects). Existing BatchDomain implementations are unaffected. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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July 11, 2026 11:21
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