java - HSM 错误 |私钥必须是 RSAPrivate(Crt)Key 的实例或具有 PKCS#8

Question

从 HSM 检索私钥时解密数据时收到错误。

我在 java.security 中添加了 sunpkcs11 提供程序。因此，不要通过代码添加提供者。文本已成功加密。但是，在解密加密文本时，我在下面的行中遇到以下错误:

cipher.init(Cipher.DECRYPT_MODE, privateKey);

我在这里缺少什么？

错误:

    Caused by: java.security.InvalidKeyException: Private key must be instance of RSAPrivate(Crt)Key or have PKCS#8 encoding
        at sun.security.pkcs11.P11RSAKeyFactory.implTranslatePrivateKey(P11RSAKeyFactory.java:101) [sunpkcs11.jar:1.7.0_85]
        at sun.security.pkcs11.P11KeyFactory.engineTranslateKey(P11KeyFactory.java:132) [sunpkcs11.jar:1.7.0_85]
        at sun.security.pkcs11.P11KeyFactory.convertKey(P11KeyFactory.java:65) [sunpkcs11.jar:1.7.0_85]
        at sun.security.pkcs11.P11RSACipher.implInit(P11RSACipher.java:199) [sunpkcs11.jar:1.7.0_85]
        at sun.security.pkcs11.P11RSACipher.engineInit(P11RSACipher.java:168) [sunpkcs11.jar:1.7.0_85]
        at javax.crypto.Cipher.init(Cipher.java:1068) [jce.jar:1.7.0_85]
        at javax.crypto.Cipher.init(Cipher.java:1012) [jce.jar:1.7.0_85]enter code here

代码如下:

import java.io.ByteArrayOutputStream;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.cert.Certificate;

import javax.crypto.Cipher;
import javax.xml.bind.DatatypeConverter;

import sun.security.pkcs11.SunPKCS11;

public class App {

    public static void main(String[] args) throws Exception {

        try {
            String passphrase = "mysecretkey";
            SunPKCS11 provider = new SunPKCS11("/home/user/pkcs11.cfg");
            KeyStore keystore = KeyStore.getInstance("PKCS11", provider);
            keystore.load(null, passphrase.toCharArray());
            String textToEncrypt = "this is my text";
            Certificate cert = keystore.getCertificate("my-SHA1WITHRSA-2048-bits-key");
            PublicKey publicKey = cert.getPublicKey();
            Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding", provider);
            cipher.init(Cipher.ENCRYPT_MODE, publicKey);
            String encryptedData = DatatypeConverter.printBase64Binary(cipher.doFinal(textToEncrypt.getBytes()));

            PrivateKey privateKey = (PrivateKey) keystore.getKey("my-SHA1WITHRSA-2048-bits-key",
                    passphrase.toCharArray());
            cipher.init(Cipher.DECRYPT_MODE, privateKey);
            byte[] decodedEncryptedData = DatatypeConverter.parseBase64Binary(encryptedData);
            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            int blocks = decodedEncryptedData.length / 256;
            int offset = 0;
            for (int blockIndex = 0; blockIndex < blocks; blockIndex++) {
                byte[] nextBlock = getNextBlock(decodedEncryptedData, offset);
                stream.write(cipher.doFinal(nextBlock));
                offset += 256;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    private static byte[] getNextBlock(byte[] cipherText, int offset) {
        byte[] block = new byte[256];
        System.arraycopy(cipherText, offset, block, 0, 256);
        return block;
    }

}

Answer 1

我是如何解决的:

此问题的根本原因是 sunpkcs11 提供程序正在静态和动态加载。

即在 java.security 中，已经添加了提供程序条目和 cfg 路径。

此外，在代码中，提供程序使用 cfg 文件再次初始化。

这是导致问题的原因。

改变后:

SunPKCS11 provider = new SunPKCS11("/home/user/pkcs11.cfg");

收件人:

SunPKCS11 sunPKCS11Provider = (SunPKCS11) Security.getProvider("SunPKCS11");

问题已解决。