import { Address } from "viem";
/**
 * Converts a NEAR account public key string to an uncompressed hex point
 *
 * @param najPublicKeyStr - The NEAR account public key string
 * @returns Uncompressed hex point string prefixed with "04"
 */
export declare function najPublicKeyStrToUncompressedHexPoint(najPublicKeyStr: string): string;
/**
 * Derives a child public key using elliptic curve operations
 *
 * @param parentUncompressedPublicKeyHex - Parent public key as uncompressed hex
 * @param signerId - The signer's identifier
 * @param path - Optional derivation path (defaults to empty string)
 * @returns Derived child public key as uncompressed hex string
 */
export declare function deriveChildPublicKey(parentUncompressedPublicKeyHex: string, signerId: string, path?: string): string;
/**
 * Converts an uncompressed hex point to an Ethereum address
 *
 * @param uncompressedHexPoint - The uncompressed hex point string
 * @returns Ethereum address derived from the public key
 * @remarks Takes the last 20 bytes of the keccak256 hash of the public key
 */
export declare function uncompressedHexPointToEvmAddress(uncompressedHexPoint: string): Address;