export function sm4en3(key: string, data: string): string;
export function sm4de3(key: string, data: string): string;
export function getInfoFromPKCS7(p7sign: Buffer | string): {
    cert: {
        subject: Array<{ name: string; value: string }>;
        subjectDN: string;
        issuer: Array<{ name: string; value: string }>;
        issuerDN: string;
        serialNumber: string;
        notBefore: string;
        notAfter: string;
        pem: string;
    } | null;
    publicKey: string | null;
    publicKeyHex: string | null;
    signature: string | null;
    signatureHex: string | null;
};
export function verifyPKCS7(p7sign: Buffer | string, originalData?: Buffer | string): boolean;