Setting Argon2 algorithm type in Java

Question

Argon2 by default uses Argon2id. How can I programatically set a different algorthm type in Java? I mean, how to mention my program should use Argon2i or Argon2d in Java?

I wanted to encode a password. I am using Spring Security jar. Used the below code to create the encoder

Argon2PasswordEncoder encoder = new Argon2PasswordEncoder(DEFAULT_SALT_LENGTH, DEFAULT_HASH_LENGTH, DEFAULT_PARALLELISM, 512, 1000);

This is using argon2id by default. Wanted to know how to set a different algorithm.

Hi, Welcome to Stack Overflow. It'd be nice if you could explain what are you trying to achieve. Also try to add something which you tried — Thomas Martin, Jun 01 '20 at 06:18

score 1 · Answer 1 · answered May 09 '21 at 20:00

You can use Password4j:

int memory = 2048;
int iterations = 10;
int parallelism = 1;
int outputLength = 128;
Argon2 variant = Argon2.D;

Argon2Function argon2 = Argon2Function.getInstance(memory, iterations, parallelism, outputLength, variant);

Hash hash = Password.hash(pwd).addRandomSalt().with(argon2);

You can store the configuration in a properties file as well, so you can just write

Hash hash = Password.hash(pwd).addRandomSalt().withArgon2();

You can find more information in the official documentation.

Setting Argon2 algorithm type in Java

1 Answers1