/**
 * Returns a digest of the given data using the Blake3 algorithm.
 */
export declare function hash(data: Uint8Array | string, bytes?: number): Uint8Array;
/**
 * Returns a keyed hash of the given data using the Blake3 algorithm. The key
 * must be 32 bytes.
 */
export declare function keyedHash(data: Uint8Array | string, key: Uint8Array | string, bytes?: number): Uint8Array;
/**
 * Derives a 32 byte key from the given key material and context string.
 */
export declare function deriveKey(data: Uint8Array | string, ctx: Uint8Array | string): Uint8Array;
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