Encrypt text using AES in Javascript then Decrypt in C# WCF Service -

i trying encrypt string using aes 128bit encryption. have code both javascript , c#. main objective encrypt string using javascript cryptojs , take resultant cipher text , decrypt using c# aes aescryptoserviceprovider.

javascript code:

function encrypttext() { var text = document.getelementbyid('textbox').value; var key = cryptojs.enc.hex.parse("psvjqrk9qtepnvu1dwuzcrvfgv1vvt0="); var iv = cryptojs.enc.hex.parse("ywlflvezzufnawl="); var encryptedtext = cryptojs.aes.encrypt(text, key, {iv: iv, mode: cryptojs.mode.cbc, padding:     cryptojs.pad.pkcs7}); //var decrypted = cryptojs.aes.decrypt(encrypted, "secret passphrase"); var encrypted = document.getelementbyid('encrypted'); encrypted.value = encryptedtext; } 

c# code:

private string aes_decrypt(string encrypted)     {         byte[] encryptedbytes = convert.frombase64string(encrypted);         aescryptoserviceprovider aes = new aescryptoserviceprovider();         aes.blocksize = 128;         aes.keysize = 256;         aes.mode = ciphermode.cbc;         aes.padding = paddingmode.pkcs7;         aes.key = key;         aes.iv = iv;         icryptotransform crypto = aes.createdecryptor(aes.key, aes.iv);         byte[] secret = crypto.transformfinalblock(encryptedbytes, 0, encryptedbytes.length);         crypto.dispose();         return system.text.asciiencoding.ascii.getstring(secret);     } 

when using "hello" plain text javascript ciphertext:

uqhe5ya+misuk4uc1wxxeq== 

when passing c# application, upon running decrypt method recieve:

padding invalid , cannot removed. 

i stumped here , have tried many solutions resulting in same error.

when encrypting hello through c# encryption aes method receive:

y9nb8drv73+rmmyrucjiog== 

i thank in advance!

try using var key = cryptojs.enc.utf8.parse("psvjqrk9qtepnvu1dwuzcrvfgv1vvt0="); instead of hex.
because string putting in key (and iv) , parsing not hex string. hex 0 f.