Add challenge-response key derivation interfaces#41
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kwsantiago wants to merge 6 commits intosparrowwallet:masterfrom
Open
Add challenge-response key derivation interfaces#41kwsantiago wants to merge 6 commits intosparrowwallet:masterfrom
kwsantiago wants to merge 6 commits intosparrowwallet:masterfrom
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Summary
Adds core interfaces for optional challenge-response (e.g. YubiKey HMAC-SHA1) as a second factor in wallet key derivation.
ChallengeResponseProvider— interface for challenge-response devicesChallengeResponseKeyDeriver— wraps anAsymmetricKeyDeriverand combines the derived key with a challenge-response viaSHA256(derivedKey || hmacResponse)ChallengeResponseException— exception type for CR failuresDependency for sparrowwallet/sparrow#1967