Improvement security

[gerwinjonathan]

Dear author,

As recently, encrypter using SHA-1/HMAC as a default algorithm for this encrypt. However, an issue occured by using SHA-1 causing an impact such as malicious activites performed.

If there is an parameter such as algorithm, would you like to add a parameter in Key class, so there will be 4 parameters, desiredKeyLength, iterationCount, salt, and algorithm or making just like SHA-2/HMAC or SHA-256/HMAC.

Thank you in advance.