/**
 * Identity Migration Utility
 *
 * Migrates old identity files from keyId format to kid multibase format
 */
/**
 * Migrate an identity file from old keyId format to new kid format
 * @param identityPath Path to the identity file
 * @returns true if migration was performed, false if already migrated
 */
export declare function migrateIdentityFile(identityPath: string): Promise<boolean>;
/**
 * Generate multibase-encoded key identifier (z-prefix base58btc)
 */
declare function generateMultibaseKid(base64PublicKey: string): string;
export { generateMultibaseKid };