/// <reference types="node" />
/**
 * @param {Buffer} buffer to RIPEMD160(buffer)
 */
export declare function RIPEMD160(buffer: Buffer): Buffer;
/**
 * @param {Buffer} buffer to SHA256(buffer)
 */
export declare function SHA256(buffer: Buffer): Buffer;
/**
 * @param {Buffer} buffer to RIPEMD160(SHA256(buffer))
 */
export declare function HASH160(buffer: Buffer): Buffer;
/**
 * @param {Buffer} buffer to SHA256(SHA256(buffer))
 */
export declare function dSHA256(buffer: Buffer): Buffer;
/**
 * @param {Buffer} buffer to KECCAK256(buffer)
 */
export declare function KECCAK256(buffer: Buffer): Buffer;
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