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import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.nio.charset.StandardCharsets;
public class CryptoHelper {
public static String sha256(String text) throws NoSuchAlgorithmException {
MessageDigest digest = MessageDigest.getInstance("SHA-256");
digest.update(text.getBytes(StandardCharsets.UTF_8));
byte[] hash = digest.digest();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < hash.length; i++)
sb.append(Integer.toString((hash[i] & 0xff) + 0x100, 16).substring(1));
return sb.toString().toUpperCase();
}
}
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