declare function normalizeSignatureFromDer(signatureHexDer: string): string;
declare function verifyNormailzedSignature(signatureHex: string, messageHashHex: string, publicKeyHex: string): boolean;
declare function verifyNormalizeSecp256K1Signature(signatureHex: string, messageHashHex: string, publicKeyHex: string): string;
declare function bigIntU256ToBytesBE(u256: bigint): Uint8Array;
declare function isValidDERSignatureEncodingInternal(sig: Uint8Array | number[]): number;
declare function isValidDERSignatureEncoding(sig: Uint8Array | number[]): boolean;
declare function derEncodeSignature(ar: Uint8Array, as: Uint8Array): Uint8Array;
declare function derEncodeBigIntSignature(r: bigint, s: bigint): Uint8Array;
declare function compressPublicKey(publicKey: Uint8Array): Uint8Array;
export { derEncodeSignature, bigIntU256ToBytesBE, compressPublicKey, derEncodeBigIntSignature, normalizeSignatureFromDer, verifyNormalizeSecp256K1Signature, verifyNormailzedSignature, isValidDERSignatureEncoding, isValidDERSignatureEncodingInternal, };