/**
 * Vault Error Codes per ZK-Vault Specification §11
 */
export declare enum VaultErrorCode {
    /** Unknown or unsupported suite */
    BAD_SUITE = "ERR_BAD_SUITE",
    /** STARK verification failed */
    BAD_PROOF = "ERR_BAD_PROOF",
    /** Nonce reused (replay attack detected) */
    REPLAY = "ERR_REPLAY",
    /** Proof exceeds maxProofBytes */
    SIZE = "ERR_SIZE",
    /** Unknown or stale context */
    CTX = "ERR_CTX",
    /** No recipient wrap decapsulated */
    DECRYPT_KEM = "ERR_DECRYPT_KEM",
    /** AEAD tag failure (AAD tamper or wrong CEK) */
    DECRYPT_AEAD = "ERR_DECRYPT_AEAD",
    /** Header policy malformed or inconsistent */
    POLICY = "ERR_POLICY",
    /** Vault not found */
    NOT_FOUND = "ERR_NOT_FOUND",
    /** Threshold not met for reconstruction */
    THRESHOLD_NOT_MET = "ERR_THRESHOLD_NOT_MET",
    /** Session expired */
    SESSION_EXPIRED = "ERR_SESSION_EXPIRED",
    /** Storage operation failed */
    STORAGE = "ERR_STORAGE",
    /** Storage operation failed (alias for STORAGE) */
    STORAGE_ERROR = "ERR_STORAGE",
    /** Data integrity check failed (checksum mismatch) */
    INTEGRITY_CHECK_FAILED = "ERR_INTEGRITY",
    /** Invalid key commitment */
    KEY_COMMITMENT = "ERR_KEY_COMMITMENT",
    /** Invalid or missing key for operation */
    INVALID_KEY = "ERR_INVALID_KEY"
}
/**
 * Base error class for all vault-related errors
 */
export declare class VaultError extends Error {
    readonly code: VaultErrorCode;
    constructor(code: VaultErrorCode, message: string);
    /**
     * Check if error matches a specific code
     */
    is(code: VaultErrorCode): boolean;
    /**
     * Create a human-readable error message
     */
    toString(): string;
}