/**
 * Cryptographic utilities for KMS signature handling
 * Handles ECDSA signature conversion and Ethereum address derivation
 */
/**
 * Convert a public key (as big integer coordinates) to an Ethereum address
 * @param publicKeyX - X coordinate of public key
 * @param publicKeyY - Y coordinate of public key
 * @returns Ethereum address
 */
export declare function publicKeyIntToEthAddress(publicKeyX: bigint, publicKeyY: bigint): string;
/**
 * Parse DER-encoded public key and convert to Ethereum address
 * @param derPublicKey - DER-encoded public key bytes
 * @returns Ethereum address
 */
export declare function derEncodedPublicKeyToEthAddress(derPublicKey: Uint8Array): string;
/**
 * Parse DER-encoded signature to extract r and s values
 * @param derSignature - DER-encoded signature
 * @returns Object with r and s as hex strings
 */
export declare function getSigRS(derSignature: Uint8Array): {
    r: string;
    s: string;
};
/**
 * Recover the v value for an ECDSA signature
 * @param msgHash - Message hash that was signed
 * @param r - r component of signature
 * @param s - s component of signature
 * @param expectedAddress - Expected Ethereum address
 * @returns v value (27 or 28)
 */
export declare function getSigV(msgHash: string, r: string, s: string, expectedAddress: string): number;
/**
 * Get complete signature (r, s, v) from DER-encoded KMS signature
 * @param kmsSignature - DER-encoded signature from KMS
 * @param msgHash - Message hash that was signed
 * @param ethAddress - Expected Ethereum address
 * @returns Complete signature object
 */
export declare function getSigRSV(kmsSignature: Uint8Array, msgHash: string, ethAddress: string): {
    r: string;
    s: string;
    v: number;
};
/**
 * Convert signature components to a single hex string
 * @param r - r component
 * @param s - s component
 * @param v - v component
 * @returns Signature as hex string
 */
export declare function signatureToHex(r: string, s: string, v: number): string;