자바 sha256()

1 개요

Java sha256()
자바 sha256()

public class MyClass {
    static String sha256(String s) {
        java.security.MessageDigest md;
        try { md = java.security.MessageDigest.getInstance("SHA-256"); }
        catch (Exception e) { return null; }
        md.update(s.getBytes());
        return (new java.math.BigInteger(1, md.digest())).toString(16);
    }
    public static void main(String args[]) {
        System.out.println(sha256(""));
        // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
        System.out.println(sha256("hello world"));
        // b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
    }
}

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