AES 256 decrypt from data oracle function encrypting

What steps will reproduce the problem?
1.I've this oracle procedure to encrypt data, using AES256, CBC adn PKCS pad

FUNCTION E_Val( pIn IN VARCHAR2) RETURN RAW
  IS
    G_CHARACTER_SET VARCHAR2(10) := 'AL32UTF8';
    G_KEY RAW(32) := UTL_I18N.STRING_TO_RAW('1234567890abcd098765321dcba12345', G_CHARACTER_SET);
    G_ENCRYPTION_TYPE PLS_INTEGER := dbms_crypto.encrypt_aes256 +
                                                                     dbms_crypto.chain_cbc +
                                                                     dbms_crypto.pad_pkcs5;
      vIn RAW(32);
    vEncrypted RAW(32);
  BEGIN
    vIn := utl_i18n.string_to_raw(data => pIn, dst_charset => G_CHARACTER_SET );
    vEncrypted := dbms_crypto.encrypt(src => vIn, typ => G_ENCRYPTION_TYPE, key => G_KEY);

    RETURN vEncrypted;
  END;

2. I can't to decrypt client side by using CriptoJS

var KEY= '1234567890abcd098765321dcba12345';
var key_h = CryptoJS.enc.Hex.parse(KEY); //is not 256 bit, so i try this 
one..as follow

var salt = "";
var key256Bits = CryptoJS.PBKDF2(KEY, salt, { keySize: 256/32 });
console.log(key256Bits);

var 
encryptedTag='31669845BCFC49DE97D92E5C8FA0B9810C5284CB59560482F1E1697D70FCB800';
//PROVA
console.log('dec toString UTF8--');

var encrypted = {};
encrypted.ciphertext = CryptoJS.enc.Hex.parse(encryptedTag);
//CBC and PKCS are default          
var decrypted = CryptoJS.AES.decrypt(encryptedTag, /*key_h */key256Bits,
          { iv: CryptoJS.enc.Hex.parse('0000000000000000000000000000000000000000000000000000000000000000') });          
console.log(decrypted.toString(CryptoJS.enc.Utf8));

What is the expected output? What do you see instead?
I expected 'PROVA' as string, but anything appears!

What version of the product are you using? On what operating system?
CryptoJS v3.1.2 - Browser  Chrome Version 37.0.2062.124 m on WIN7 64bit

Please provide any additional information below.

this is the oracle decrypt function that works fine

 ------------------------------------------------------------------------
  --Decrypt
  ------------------------------------------------------------------------
  FUNCTION D_Val(pIn IN RAW) RETURN VARCHAR2
  IS
    G_CHARACTER_SET VARCHAR2(10) := 'AL32UTF8';
    G_KEY RAW(32) := UTL_I18N.STRING_TO_RAW('1234567890abcd098765321dcba12345', G_CHARACTER_SET);
    G_ENCRYPTION_TYPE PLS_INTEGER := dbms_crypto.encrypt_aes256 +
                                                                     dbms_crypto.chain_cbc +
                                                                     dbms_crypto.pad_pkcs5;
    vDecrypted RAW(32);
    vDecryptedVar VARCHAR2(32);
  BEGIN
    vDecrypted := dbms_crypto.decrypt(src => pIn, typ => G_ENCRYPTION_TYPE, key => G_KEY);
    vDecryptedVar := utl_i18n.raw_to_char(data => vDecrypted, src_charset => G_CHARACTER_SET);

      RETURN vDecryptedVar;
  END;

Thanks!
Original issue reported on code.google.com by dinobolo...@gmail.com on 15 Oct 2014 at 2:02
steigal / crypto-js

AES 256 decrypt from data oracle function encrypting #142
