Add PasswordEncoder for the Argon2 hashing algorithm (Password Hashing Competition (PHC) winner). This implementation uses the BouncyCastle-implementation of Argon2. Fixes gh-5354
Add PasswordEncoder for the Argon2 hashing algorithm (Password Hashing Competition (PHC) winner). This implementation uses the BouncyCastle-implementation of Argon2. Fixes gh-5354