PasswordDeriveBytesForJava

a Java port of C# PasswordDeriveBytes class

MS original PasswordDeriveBytes class contains a nonstandard extension of the PBKDF1 algorithm. So MS PasswordDeriveBytes is different of normal BKDF1.

This class has made imitating MS original PasswordDeriveBytes.

Still, it works for SHA-1, which is default for PasswordDeriveBytes.

Behavior of C# PasswordDeriveBytes GetBytes with SHA1

Below result is I tested C# PasswordDeriveBytes GetBytes function with SHA1 byte by byte. 'A' is return value length of first call of GetBytes function.

Argument of first call of GetBytes function	Return value of second call of GetBytes function
1 ~ 9	Runtime Error
10 ~ 19	Skip (20 - A) bytes and read (20 - A) bytes in key stream + normal second result
21 ~ 39	Skip (40 - A) bytes and read (40 - A) bytes in key stream + normal second result
40 ~	normal second result

PasswordDeriveBytes For PHP by Gabriel Castillo

http://www.tyrodeveloper.com/2017/05/passwordderivebytes-en-php.html

Thank you for porting!