/// <reference types="node" />
export declare function fallbackRandomBytes(length: number): Buffer;
export declare function fallbackAesEncrypt(iv: Buffer, key: Buffer, data: Buffer): Buffer;
export declare function fallbackAesDecrypt(iv: Buffer, key: Buffer, data: Buffer): Buffer;
export declare function fallbackHmacSha256Sign(key: Buffer, data: Buffer): Buffer;
export declare function fallbackHmacSha512Sign(key: Buffer, data: Buffer): Buffer;
export declare function fallbackSha256(msg: Buffer): Buffer;
export declare function fallbackSha512(msg: Buffer): Buffer;
export declare function fallbackRipemd160(msg: Buffer): Buffer;
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