/**
 * Cryptographic algorithm constants
 */
export declare const CRYPTO: {
    readonly SIGNATURE_ALGORITHM: "Ed25519";
    readonly SIGNATURE_ALG_NAME: "EdDSA";
    readonly ENCRYPTION_ALGORITHM: "aes-256-gcm";
    readonly KEY_DERIVATION: "pbkdf2";
    readonly KDF_HASH: "sha256";
    readonly ED25519_PUBLIC_KEY_LENGTH: 32;
    readonly ED25519_PRIVATE_KEY_LENGTH: 32;
    readonly ED25519_SIGNATURE_LENGTH: 64;
    readonly AES_KEY_LENGTH: 32;
    readonly IV_LENGTH: 16;
    readonly AUTH_TAG_LENGTH: 16;
    readonly SALT_LENGTH: 32;
    readonly KDF_ITERATIONS: 600000;
};
/**
 * DID constants
 */
export declare const DID: {
    readonly METHOD: "did:key:";
    readonly MULTIBASE_PREFIX: "z";
    readonly ED25519_MULTICODEC: Uint8Array<ArrayBuffer>;
};
/**
 * Verifiable Credential constants
 * Using W3C VC Data Model 2.0
 */
export declare const VC: {
    readonly CONTEXT: readonly ["https://www.w3.org/ns/credentials/v2"];
    readonly BASE_TYPE: "VerifiableCredential";
    readonly OWNERSHIP_TYPE: "AgentOwnershipCredential";
    readonly CAPABILITY_TYPE: "AgentCapabilityCredential";
    readonly JWT_TYPE: "JWT";
};
/**
 * Security policy constants
 */
export declare const SECURITY: {
    readonly MIN_PASSPHRASE_LENGTH: 16;
    readonly MIN_PASSPHRASE_ENTROPY: 40;
    readonly DEFAULT_AUTH_EXPIRY: 120;
    readonly MAX_DID_LENGTH: 200;
};
/**
 * File and storage constants
 */
export declare const STORAGE: {
    readonly DEFAULT_DIR_NAME: ".agent-did";
    readonly INDEX_FILE: "identities.json";
    readonly KEYS_DIR: "keys";
    readonly CREDENTIALS_DIR: "credentials";
    readonly FILE_PERMISSIONS: 384;
    readonly TEMP_FILE_SUFFIX: ".tmp";
};
/**
 * Version constants
 */
export declare const VERSION: {
    readonly KEY_VERSION: 1;
    readonly KEYSTORE_VERSION: 1;
};
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