/**
 * @param r
 * @param s
 * @returns {Signature}
 * @constructor
 */
export class Signature {
    constructor(r: any, s: any);

    /**
     * In order to mimic the non-strict DER encoding of OpenSSL, set strict = false.
     */
    static parseDER(): void;

    /**
     * This function is translated from bitcoind's IsDERSignature and is used in
     * the script interpreter.  This "DER" format actually includes an extra byte,
     * the nhashtype, at the end. It is really the tx format, not DER format.
     *
     * A canonical signature exists of: [30] [total len] [02] [len R] [R] [02] [len S] [S] [hashtype]
     * Where R and S are not negative (their first byte has its highest bit not set), and not
     * excessively padded (do not start with a 0 byte, unless an otherwise negative number follows,
     * in which case a single 0 byte is necessary and even required).
     *
     * See https://bitcointalk.org/index.php?topic=8392.msg127623#msg127623
     */
    static isTxDER(): void;

    /**
     * Compares to bitcoind's IsLowDERSignature
     * See also ECDSA signature algorithm which enforces this.
     * See also BIP 62, "low S values in signatures"
     */
    hasLowS(): void;

    /**
     * @returns true if the nhashtype is exactly equal to one of the standard options or combinations thereof.
     * Translated from bitcoind's IsDefinedHashtypeSignature
     */
    hasDefinedHashtype(): any;
}