AES Decryption not working

[GoogleCodeExporter]

Below is my javascript code

var key64 = "avIPFtMr6mYhQ2OD3vyHrg=="; // Base64 encoded key generated via 
aes.random_key ruby

var data = "xE1E9BKoUM00zxcjns8eBQ=="; //actual data : SOME DATA

var decrypted = CryptoJS.AES.decrypt({
    ciphertext: CryptoJS.enc.Base64.parse(data)
}, CryptoJS.enc.Base64.parse(key64));
console.log('Text: ', CryptoJS.enc.Latin1.stringify(decrypted));

Expected output is "SOME DATA"

I m using latest aes build

This key and data decrypts in PHP but for some reason not working in javascript 
console. Is their something wrong that i m doing here.

Original issue reported on code.google.com by poojari....@gmail.com on 7 Aug 2013 at 6:00

[GoogleCodeExporter]

Where's the IV? What mode were you expecting to use? CryptoJS's default is CBC. 
What padding scheme were you expecting to use? CryptoJS's default is PKCS7.

Original comment by Jeff.Mott.OR on 7 Aug 2013 at 6:15

[GoogleCodeExporter]

Thanks for quick reply

Frankly i m quite naive. Below is the ruby code used to generate those

def getkey

  aes = OpenSSL::Cipher::Cipher.new('AES-128-CBC') 
  aes.encrypt
  key = aes.random_key

  session[:key] = key

  render :json => {:mkey => Base64.encode64(key).gsub(/\n/, '')}
end

def getdata
    js = "SOME DATA"

    aes = OpenSSL::Cipher::Cipher.new('AES-128-CBC')
    aes.encrypt
    aes.key = session[:key]
    encrypted = aes.update(js) + aes.final

    encrypted = Base64.encode64(encrypted).gsub(/\n/, '')

    render :json => {:data => encrypted}
end

getkey generates key and getdata encrypts data

By default im using CBC mode and 128 bit

Original comment by poojari....@gmail.com on 7 Aug 2013 at 6:19

[GoogleCodeExporter]

I think ruby OpenSSL::Cipher applies PKCS#5 padding by default.

Original comment by poojari....@gmail.com on 7 Aug 2013 at 6:41

[GoogleCodeExporter]

The Ruby documentation seems to indicate that when an IV isn't provided, then 
it uses an all-zero IV. That's probably not the behavior you want, but 
nonetheless if you wanted to replicate it in JS...

var decrypted = CryptoJS.AES.decrypt({
    ciphertext: CryptoJS.enc.Base64.parse(data)
}, CryptoJS.enc.Base64.parse(key64),
{ iv: CryptoJS.enc.Hex.parse('00000000000000000000000000000000') });

Original comment by Jeff.Mott.OR on 7 Aug 2013 at 7:16

[GoogleCodeExporter]

Thank you for helping me out, it worked.

Greatly appreciated, where you could have easily disregarded this as not 
cryptojs bug you helped me sort it.

Original comment by poojari....@gmail.com on 8 Aug 2013 at 2:42

[GoogleCodeExporter]

Original comment by Jeff.Mott.OR on 13 Aug 2013 at 6:49

• Changed state: Invalid