c# - Having wired outputs while Rfc2898DeriveBytes implementation in TripleDES -

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this simple code taking hours find out why getting wrong output. can't seem find problem. okey specially rfc2898derivebytes implementation? need find out whats causing wrong output, , how solve make code work.

static void main(string[] args)     {         string data = "welcome jungle";         string pass = "monkey";         string salt = "12345678";         byte[] textdata = encoding.utf8.getbytes(data);         byte[] password = encoding.utf8.getbytes(pass);         byte[] saltbyte = encoding.utf8.getbytes(salt);         rfc2898derivebytes keygenerate = new rfc2898derivebytes(password ,saltbyte ,1000);         rfc2898derivebytes keygenerate1 = new rfc2898derivebytes(password, saltbyte, 1000);         byte[] key1 = keygenerate.getbytes(16);         byte[] key2 = keygenerate1.getbytes(16);         console.writeline("plaintext: " + data);          tripledescryptoserviceprovider tdes = new tripledescryptoserviceprovider();         tdes.blocksize = 64;         tdes.keysize = 128;         tdes.key = key1;         tdes.iv = saltbyte;         tdes.mode = ciphermode.cbc;         tdes.padding = paddingmode.pkcs7;         icryptotransform tripledes = tdes.createencryptor();         byte[] een = tripledes.transformfinalblock(textdata, 0, textdata.length);         string een1 = convert.tobase64string(een);         console.writeline("encrypted data: " +een1);          tripledescryptoserviceprovider tdes1 = new tripledescryptoserviceprovider();         tdes1.blocksize = 64;         tdes1.keysize = 128;         tdes1.key = key2;         tdes1.iv = saltbyte;         tdes1.mode = ciphermode.cbc;         tdes1.padding = paddingmode.pkcs7;         icryptotransform tripledes1 = tdes1.createdecryptor();         byte[] en1 = tripledes.transformfinalblock(een, 0, een.length);         string en11 = encoding.utf8.getstring(en1); ;         console.writeline("decrypted data: " +en11);         console.readline();      }

this in output:

enter image description here

and 1 more thing want know, difference between rfc2898derivebytes(string a, byte[] salt, int iteration) , rfc2898derivebytes( byte[] , byte[] salt, int iteration) ? , 1 best use? give same output?

you're using original (encryptor) tripledes instance, rather decryptor instance tripledes1 decrypt.


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