Question

import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

/**
 * Class to calculate CMAC which is used as PRF in KDF for SCP03 PseudoRandom CardChallenge generation
 */
public class Cmac {

    /**
     * Tested CMAC against official TestVectors ({@link 'http://csrc.nist.gov/publications/nistpubs/800-38B/SP_800-38B.pdf'})
     * CMAC used as PRF in KDF
     */

    public static byte[] calc(byte[] keyBytes, byte[] data) throws ApduGeneratorException {
        try {
            SecretKey key = new SecretKeySpec(keyBytes, 0, keyBytes.length, "AES");
            Mac mac = Mac.getInstance("CmacAES", BouncyCastleProvider.PROVIDER_NAME);
            mac.init(key);

            byte[] hash = mac.doFinal(data);

            return hash;
        } catch (Exception e) {
            throw new ApduGeneratorException(e.getMessage());
        }
    }
}

此代码导致此类异常：

java.security.NoSuchAlgorithmException: no such algorithm: CmacAES for provider BC
    at sun.security.jca.GetInstance.getService(Unknown Source)
    at javax.crypto.JceSecurity.getInstance(JceSecurity.java:97)
    at javax.crypto.Mac.getInstance(Mac.java:222)
    at com.quantag.globalplatform.sm.Cmac.calc(Cmac.java:23)
    at app.executors.LoadAppletExecutor$1.call(LoadAppletExecutor.java:102)
    at app.executors.LoadAppletExecutor$1.call(LoadAppletExecutor.java:1)
    at javafx.concurrent.Task$TaskCallable.call(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at javafx.concurrent.Service.lambda$null$492(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at javafx.concurrent.Service.lambda$executeTask$493(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

我已安装JCE unlimited 8并添加了：security.provider.N=org.bouncycastle.jce.provider.BouncyCastleProvider 根据{{3}}。
但我仍然得到这个例外。我错过了什么？

我正在使用这样的BC版本： bcprov-jdk15on-154.jar 。

Answer 1

已更换：

Mac mac = Mac.getInstance("CmacAES", BouncyCastleProvider.PROVIDER_NAME);

使用这个新代码：

Mac mac = Mac.getInstance("AESCMAC", BouncyCastleProvider.PROVIDER_NAME);

异常消失了，一切都很完美。

java.security.NoSuchAlgorithmException：没有这样的算法：提供者BC的CmacAES

1 个答案: