import { Network } from '@babylonlabs-io/babylon-tbv-rust-wasm';
/**
 * Parameters for building the PegIn input PSBT
 */
export interface BuildPeginInputPsbtParams {
    /**
     * Vault core (tx-graph) version the Pre-PegIn was built with. Must match
     * the version passed to buildPrePeginPsbt() so the HTLC connector scripts
     * are derived for the same graph.
     */
    vaultCoreVersion: number;
    /**
     * PegIn transaction hex (1 input spending Pre-PegIn HTLC output 0).
     * Returned by buildPeginTxFromFundedPrePegin().
     */
    peginTxHex: string;
    /**
     * Funded Pre-PegIn transaction hex.
     * Used to look up the HTLC output that the PegIn input spends.
     */
    fundedPrePeginTxHex: string;
    /** Depositor's BTC public key (x-only, 64-char hex) */
    depositorPubkey: string;
    /** Vault provider's BTC public key (x-only, 64-char hex) */
    vaultProviderPubkey: string;
    /** Vault keeper BTC public keys (x-only, 64-char hex) */
    vaultKeeperPubkeys: string[];
    /** Universal challenger BTC public keys (x-only, 64-char hex) */
    universalChallengerPubkeys: string[];
    /** SHA256 hash commitment (64 hex chars = 32 bytes) */
    hashlock: string;
    /** CSV timelock in blocks for the HTLC refund path */
    timelockRefund: number;
    /** Bitcoin network */
    network: Network;
}
/**
 * Result of building the PegIn input PSBT
 */
export interface BuildPeginInputPsbtResult {
    /** PSBT hex for the depositor to sign */
    psbtHex: string;
}
/**
 * Build PSBT for depositor to sign the PegIn transaction's HTLC leaf 0 input.
 *
 * The PegIn transaction spends the Pre-PegIn HTLC output (output 0) via the
 * hashlock + all-party script (leaf 0). The depositor provides one of the required
 * signatures; the vault provider and keepers provide theirs separately via the
 * signPeginInput RPC.
 *
 * The PSBT uses Taproot script-path spending:
 * - witnessUtxo: the Pre-PegIn HTLC output
 * - tapLeafScript: hashlock leaf script + control block
 * - tapInternalKey: NUMS unspendable key (BIP-341 nothing-up-my-sleeve)
 *
 * @param params - PegIn input PSBT parameters
 * @returns PSBT hex ready for depositor signing
 * @throws If PegIn tx does not have exactly 1 input
 * @throws If PegIn input does not reference the Pre-PegIn HTLC output
 * @throws If Pre-PegIn tx output 0 is not found
 */
export declare function buildPeginInputPsbt(params: BuildPeginInputPsbtParams): Promise<BuildPeginInputPsbtResult>;
/**
 * Extract the depositor's Schnorr signature from a signed PegIn input PSBT.
 *
 * Supports non-finalized PSBTs with tapScriptSig entries. Finalized PSBTs are
 * rejected because the witness stack does not reliably identify the depositor
 * signature by public key.
 *
 * PegIn input signatures must use implicit Taproot SIGHASH_DEFAULT, which is
 * encoded by omitting the sighash byte. Signatures with an appended sighash byte
 * are rejected rather than stripped.
 *
 * @param signedPsbtHex - Signed PSBT hex
 * @param depositorPubkey - Depositor's x-only public key (64-char hex)
 * @returns 64-byte Schnorr signature (128 hex chars, no sighash flag)
 * @throws If no signature is found for the depositor's key
 */
export declare function extractPeginInputSignature(signedPsbtHex: string, depositorPubkey: string): string;
/**
 * Finalize a signed PegIn input PSBT and return the depositor-signed transaction hex.
 *
 * The default tapscript finalizer builds the full witness stack [sig, script, controlBlock]
 * that vaultd requires when verifying the depositor signature on-chain.
 *
 * @param signedPsbtHex - Non-finalized signed PSBT hex (returned by wallet with autoFinalized: false)
 * @returns Depositor-signed PegIn transaction hex with full taproot witness stack
 */
export declare function finalizePeginInputPsbt(signedPsbtHex: string): string;
/**
 * Extract and validate a 64-byte Schnorr signature.
 * PegIn input signatures must use implicit Taproot SIGHASH_DEFAULT, which is
 * encoded by omitting the sighash byte. Reject 65-byte signatures instead of
 * stripping the sighash byte because it changes the signed Taproot message.
 * @internal
 */
export declare function extractSchnorrSig(sig: Uint8Array): string;
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