C#大文件流式压缩解压

概述public static void Encrypt(SymmetricAlgorithm provider, string readFile, string writeFile) { try { var buffer=new Span<byte>(new byte[4096]);

        public static voID Encrypt(SymmetricAlgorithm provIDer,string readfile,string writefile)        {            try            {                var buffer=new Span<byte>(new byte[4096]);                fileStream fsWrite = new fileStream(writefile,fileMode.Create);                fileStream fsRead = new fileStream(readfile,fileMode.Open);                ICryptotransform transform = provIDer.CreateEncryptor(provIDer.Key,provIDer.IV);                CryptoStream cs = new CryptoStream(fsWrite,transform,CryptoStreamMode.Write);                while (fsRead.Read(buffer) > 0)                    cs.Write(buffer);                fsRead.Close();                cs.Close();                fsWrite.Close();                Console.Writeline("Encrypt Success");            }            catch (Exception e)            {                Console.Writeline("Encrypt Failed" + e);            }        }        public static voID Decrypt(SymmetricAlgorithm provIDer,string readfile,string writefile)        {            try            {                var buffer = new Span<byte>(new byte[4096]);                fileStream fsRead = new fileStream(readfile,fileMode.Open);                fileStream fsWrite = new fileStream(writefile,fileMode.OpenorCreate);                ICryptotransform transform = provIDer.CreateEncryptor(provIDer.Key,provIDer.IV);                CryptoStream cs = new CryptoStream(fsRead,CryptoStreamMode.Read);                while (cs.Read(buffer) > 0)                    fsWrite.Write(buffer);                fsWrite.Close();                cs.Close();                fsRead.Close();                Console.Writeline("Decrypt Success");            }            catch (Exception e)            {                Console.Writeline("Decrypt Failed" + e);            }        }

　　E.g.

            AesCryptoServiceProvIDer pr = new AesCryptoServiceProvIDer            {                Key = key,Mode = CipherMode.ECB,padding = paddingMode.PKCS7            };             Encrypt(pr,"readfile","writefile");

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