export declare function hmacSha256Sign(key: Uint8Array, msg: Uint8Array): Promise<Uint8Array>;
export declare function hmacSha256Verify(key: Uint8Array, msg: Uint8Array, sig: Uint8Array): Promise<boolean>;
export declare function hmacSha512Sign(key: Uint8Array, msg: Uint8Array): Promise<Uint8Array>;
export declare function hmacSha512Verify(key: Uint8Array, msg: Uint8Array, sig: Uint8Array): Promise<boolean>;
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