/// <reference types="node" />
/**
 * Converts a Buffer into a a word array and optionally pads bits.
 * This function is needed because the default bech32 fromWords/toWords
 * functions do not allow us to optionally include/exclude padding.
 * The encoder needs to pad bits.  The decoder does not care about the
 * padding bits.
 *
 * @param data input data
 * @param inBits number of bits in, usually 5 or 8
 * @param outBits number of bits out, usualy 8 or 5
 * @param pad indicates if output should be padded
 * @return converted words
 */
export declare function convertWords(data: number[] | Buffer, inBits: number, outBits: number, pad: boolean): number[];
/**
 * Calculates the number of words needed to store the number.
 * In bech32, each word is 5 bits (2^5 = 32). To properly
 * encode a number, we need to determine how many words
 * are necessary to encode the value.
 *
 * @param num integer value
 * @returns number of words
 */
export declare function sizeofNum(num: number): number;
/**
 * Calculates the number of words needed to store
 * the supplied number of bits. In bech32, each words is 5 bits
 * (2^5 = 32).
 *
 * @param bits number of bits
 * @returns number of words
 */
export declare function sizeofBits(bits: number): number;
/**
 * Calculates the number of words needeed to store
 * the supplied number of bytes. In bech32, each words is 5 bits
 * (2^5 = 32). We first convert the bytes to bits and then
 * convert to words.
 *
 * @param bytes
 * @returns number of words
 */
export declare function sizeofBytes(bytes: number): number;