import { type Operation } from "effection";
/** Implement `tufa challenge generate`. */
export declare function challengeGenerateCommand(args: Record<string, unknown>): Operation<void>;
/** Implement `tufa challenge respond` by sending a signed `/challenge/response` exchange message. */
export declare function challengeRespondCommand(args: Record<string, unknown>): Operation<void>;
/** Implement `tufa challenge verify` by matching accepted challenge responses in local exchange state. */
export declare function challengeVerifyCommand(args: Record<string, unknown>): Operation<void>;
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