import { ed25519, sr25519 } from '@polkadot-labs/hdkd-helpers';
/**
 * Verify an Ed25519 signature
 * @param signature - The signature to verify (64 bytes)
 * @param message - The original message that was signed
 * @param publicKey - The public key of the signer (32 bytes)
 * @returns true if the signature is valid, false otherwise
 * @example
 * ```ts
 * const message = new TextEncoder().encode('Hello, G1!')
 * const signature = keyPair.sign(message)
 * const isValid = verifyEd25519(signature, message, keyPair.publicKey)
 * ```
 */
export declare function verifyEd25519(signature: Uint8Array, message: Uint8Array, publicKey: Uint8Array): boolean;
/**
 * Verify an Sr25519 signature
 * @param signature - The signature to verify (64 bytes)
 * @param message - The original message that was signed
 * @param publicKey - The public key of the signer (32 bytes)
 * @returns true if the signature is valid, false otherwise
 * @example
 * ```ts
 * const message = new TextEncoder().encode('Hello, G1!')
 * const signature = keyPair.sign(message)
 * const isValid = verifySr25519(signature, message, keyPair.publicKey)
 * ```
 */
export declare function verifySr25519(signature: Uint8Array, message: Uint8Array, publicKey: Uint8Array): boolean;
/**
 * Verify a signature using the appropriate algorithm
 * @param signature - The signature to verify (64 bytes)
 * @param message - The original message that was signed
 * @param publicKey - The public key of the signer (32 bytes)
 * @param algorithm - The algorithm used ('ed25519' or 'sr25519')
 * @returns true if the signature is valid, false otherwise
 * @example
 * ```ts
 * const isValid = verifySignature(signature, message, publicKey, 'ed25519')
 * ```
 */
export declare function verifySignature(signature: Uint8Array, message: Uint8Array, publicKey: Uint8Array, algorithm?: 'ed25519' | 'sr25519'): boolean;
export { ed25519, sr25519 };