/// <reference types="node" />
import { LockTime, Sequence } from '@node-dlc/bitcoin';
export declare class CommitmentNumber {
    /**
     * Using the obscured commitment number, creates a Sequence with
     * the upper byte set to 0x80 and the lower three bytes set to the
     * upper 3 bytes of the 48-bit commitment number.
     *
     * The upper most byte is set to 0x80 so that the relative lock time
     * is disabled.
     *
     * @param commitment commitment number to obscure
     */
    static getSequence(obscurred: bigint): Sequence;
    /**
     * Using the obscured commitment number, creates a LockTime with
     * the upper byte set to 0x20 and the lower three bytes set to the
     * lower 3 bytes of the 48-bit commitment number.
     *
     * The uppermost byte is set to 0x20 so the LockTime uses a time
     * based absolute locktime that has already expired.
     *
     * @param obscurred obscurred commitment number
     */
    static getLockTime(obscurred: bigint): LockTime;
    /**
     * Reveals the commitment number provided by the nSequence and
     * nLockTime values. This function reverses the obscurring using the
     * known payment base points.
     *
     * @param locktime
     * @param sequence
     */
    static reveal(locktime: LockTime, sequence: Sequence, openBasePoint: Buffer, acceptBasePoint: Buffer): number;
    /**
     * Defined in BOLT3, the obscurred commitment number is attached to the
     * commitment transaction. The 48-bit commitment number is broken into
     * two pieces, the lower 3-bytes are obscured in nLocketime and the
     * upper 3-bytes are obscured in the funding input's nSequence.
     *
     * The obscurred commitment number is calculated as the:
     * sha256(open_channel payment_basepoint || accept_channel payment_basepoint) ^ commitment_number
     * @param commitment
     * @param openBasePoint
     * @param acceptBasePoint
     */
    static obscure(commitment: number, openBasePoint: Buffer, acceptBasePoint: Buffer): bigint;
    /**
     * Obtains the lower 6-bytes from the sha256 of the open_channel
     * basepoint and the accept_channel basepoint.
     * @param openBasePoint
     * @param acceptBasePoint
     */
    private static getHash;
}