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@covenance/dlc

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Crypto and Bitcoin functions for Covenance DLC implementation

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import { Transaction } from '../btc'; import { Point } from '../crypto/secp256k1'; import { PrivKey, AdaptorSignature, Signature, PubKey } from '../crypto/types'; /** * Creates an adaptor signature for a CET * @param counterpartyPrivKey - The private key of the counterparty creating the signature * @param oracleSigPoint - The oracle's signature point for the event outcome * @param cet - The CET transaction to sign * @param inputIndex - The index of the input to sign in the CET * @param tapleafHash - The hash of the tapleaf * @returns The adaptor signature for the CET */ export declare function signCetWithAdaptorSig(counterpartyPrivKey: PrivKey, oracleSigPoint: Point, cet: Transaction, inputIndex: number, tapleafHash: Buffer): Promise<AdaptorSignature>; /** * Verifies an adaptor signature for a CET * @param signature - The adaptor signature to verify * @param counterpartyPubKey - The counterparty's public key * @param oracleSigPoint - The oracle's signature point for the event outcome * @param cet - The CET transaction that was signed * @param inputIndex - The index of the input that was signed * @param tapleafHash - The hash of the tapleaf * @returns True if the signature is valid, false otherwise */ export declare function verifyCetAdaptorSig(signature: AdaptorSignature, counterpartyPubKey: PubKey, oracleSigPoint: Point, cet: Transaction, inputIndex: number, tapleafHash: Buffer): Promise<boolean>; /** * Verifies a completed signature for a CET * @param signature - The completed signature to verify * @param counterpartyPubKey - The counterparty's public key * @param cet - The CET transaction that was signed * @param inputIndex - The index of the input that was signed * @param tapleafHash - The hash of the tapleaf * @returns True if the signature is valid, false otherwise */ export declare function verifyCetSignature(signature: Signature, counterpartyPubKey: PubKey, cet: Transaction, inputIndex: number, tapleafHash: Buffer): Promise<boolean>; /** * Taproot/SegWit-v1 Schnorr signature serializer * @param signature - The signature to serialize * @param sighash - The sighash to serialize * @returns The serialized signature */ export declare function sigToTaprootBuf({ R, s }: Signature, sighash?: number): Uint8Array;