Identify an unknown hash

I need help to decode this hash. An application sends all data like this and this data is decoded on the server. Now … how to decode that?

tCEyQrMwfNFZN2 0QB + + HQUy6qvOHmE / UUkBJIK9Gen MBykJ7KD8a8hgLpWeo + / + P2125S8 v4Lmyj + mw2ReCPDkiCzYyXnVYEnDS5 / rNIFjS16TEGJJjANplOD06854ccWIWrmTf4NEZfAL7Linzxc5xbJLc2CVdZ / brXdtkc15IIFOhTXmzcSac + YRapf / H4rw3d8D74tjCQUjQrfkqb UsvClPsctVmGvmgHc1W + + + + 1p5Nhs4tPqGO3E4jmiglw2lTngzL1hy0oHVIJonBb0QkZsMlzy2uQXH0I8P10JpdwQKcD2nPujSPRBkhGmPGiqgDiVQlZiaVmhbDD43NsFp69FO12Lat2MVE6wD Gdz6MrqZYqlzAfE6fFBfSOEX MvROkwvOvT + h / 5N7uK6aPaB / PZFGN / 2xt69Wi9PFnwhdKMCCftOr23fGfiKyaeoA7gW / 0gDR5qv1VcR218QzRszXX27zfNEISs4JHL6qb2fvBHXTqmsEnC0L / RTkC7AhL / 04OtQ7DqhP6rgHdD1AZT6Q ==


public static String m8317a (String str, String str2) {
try {
SecureRandom secureRandom = new SecureRandom ();
byte[] bArr = new byte[16];
AlgorithmParameterSpec ivParameterSpec = new IvParameterSpec ("sk7erfJeopw289dS" .getBytes ());
Key secretKeySpec = new SecretKeySpec (str.getBytes ("UTF-8"), "AES");
Cipher instance = Cipher.getInstance ("AES / CBC / PKCS5Padding");
instance.init (1, secretKeySpec, ivParameterSpec);
byte[] doFinal = instance.doFinal (str2.getBytes ("UTF-8"));
ByteBuffer allocate = ByteBuffer.allocate (doFinal.length);
allocate.put (doFinal);
return Base64.encodeToString (allocate.array (), 0);
} catch (disposable th) {
C1861b.m8310a (th);
return null;
}
}

This function creates this hash. Can any one help me to create this function in PHP?