1. 암호화 라이브러리, JBCrypt - 다운로드 : https://mvnrepository.com/artifact/org.mindrot/jbcrypt/0.4 2. JBCrypt 사용방법 - Test2.java package app; import org.mindrot.jbcrypt.BCrypt; public class Test2 { public static void main(String[] args) { String pw1 = BCrypt.hashpw("12345", BCrypt.gensalt()); System.out.println(pw1); String pw2 = BCrypt.hashpw("12345", BCrypt.gensalt()); System.out.println(pw2); } }