/**
 * Nostr utilities
 * Convert between G1 keys and Nostr bech32 format (npub/nsec)
 *
 * Nostr uses Ed25519 keys encoded in bech32 format:
 * - npub: public key (shareable)
 * - nsec: private key (secret, never share)
 *
 * Since G1/GTest also uses Ed25519, the same mnemonic can be used
 * for both G1 and Nostr identities.
 */
/**
 * Convert a public key to Nostr npub format
 * @param publicKey - Ed25519 public key (32 bytes)
 * @returns Nostr public key in bech32 format (npub1...)
 * @example
 * ```ts
 * const npub = pubkeyToNpub(keyPair.publicKey)
 * // → 'npub1abc123...'
 * ```
 */
export declare function pubkeyToNpub(publicKey: Uint8Array): string;
/**
 * Convert a mini-secret to Nostr nsec format
 * WARNING: Never share your nsec! It's your private key.
 * @param miniSecret - Ed25519 mini-secret/seed (32 bytes)
 * @returns Nostr private key in bech32 format (nsec1...)
 * @example
 * ```ts
 * const nsec = miniSecretToNsec(miniSecret)
 * // → 'nsec1xyz789...'
 * ```
 */
export declare function miniSecretToNsec(miniSecret: Uint8Array): string;
/**
 * Convert a Nostr npub to public key
 * @param npub - Nostr public key in bech32 format (npub1...)
 * @returns Ed25519 public key (32 bytes)
 * @example
 * ```ts
 * const publicKey = npubToPubkey('npub1abc123...')
 * ```
 */
export declare function npubToPubkey(npub: string): Uint8Array;
/**
 * Convert a Nostr nsec to mini-secret
 * @param nsec - Nostr private key in bech32 format (nsec1...)
 * @returns Ed25519 mini-secret/seed (32 bytes)
 * @example
 * ```ts
 * const miniSecret = nsecToMiniSecret('nsec1xyz789...')
 * ```
 */
export declare function nsecToMiniSecret(nsec: string): Uint8Array;
/**
 * Convert a mnemonic to Nostr nsec
 * Use the same mnemonic as your G1 wallet to get a Nostr identity.
 * WARNING: Never share your nsec!
 * @param mnemonic - BIP39 mnemonic phrase
 * @returns Nostr private key in bech32 format (nsec1...)
 * @example
 * ```ts
 * const nsec = mnemonicToNsec('bottom drive obey lake...')
 * // → 'nsec1...'
 * ```
 */
export declare function mnemonicToNsec(mnemonic: string): string;
/**
 * Convert a mnemonic to Nostr npub
 * @param mnemonic - BIP39 mnemonic phrase
 * @param derivation - Optional derivation path (e.g., '//0')
 * @returns Nostr public key in bech32 format (npub1...)
 * @example
 * ```ts
 * const npub = mnemonicToNpub('bottom drive obey lake...')
 * // → 'npub1...'
 * ```
 */
export declare function mnemonicToNpub(mnemonic: string, derivation?: string): string;
/**
 * Get both Nostr identifiers from a mnemonic
 * @param mnemonic - BIP39 mnemonic phrase
 * @param derivation - Optional derivation path
 * @returns Object with npub and nsec
 * @example
 * ```ts
 * const { npub, nsec } = mnemonicToNostr('bottom drive obey lake...')
 * // npub is safe to share, nsec is SECRET
 * ```
 */
export declare function mnemonicToNostr(mnemonic: string, derivation?: string): {
    npub: string;
    nsec: string;
};