Question

我有这个问题与android＆gt; 8 我使用密钥包装器用rsa算法包装密钥。这是课程的一部分

public byte[] wrap(SecretKey key) throws GeneralSecurityException {
    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.N_MR1) {
        OAEPParameterSpec sp = new OAEPParameterSpec("SHA-256",
                "MGF1", new MGF1ParameterSpec("SHA-1"),
                PSource.PSpecified.DEFAULT);
        cipher.init(Cipher.WRAP_MODE, pair.getPublic(), sp);
    } else {
        cipher.init(Cipher.WRAP_MODE, pair.getPublic());
    }
    return cipher.wrap(key);
}

public SecretKey unwrap(byte[] blob) throws GeneralSecurityException {
    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.N_MR1) {
        OAEPParameterSpec sp = new OAEPParameterSpec("SHA-256",
                "MGF1", new MGF1ParameterSpec("SHA-1"),
                PSource.PSpecified.DEFAULT);
        cipher.init(Cipher.UNWRAP_MODE, pair.getPrivate(), sp);
    } else {
        cipher.init(Cipher.UNWRAP_MODE, pair.getPrivate());
    }
    return (SecretKey) cipher.unwrap(blob, "AES", Cipher.SECRET_KEY);
}

我在android密钥库中生成对和存储。

问题是，当我尝试解开密钥时，我可以获得此异常

Unexpected parameters: javax.crypto.spec.OAEPParameterSpec@27572f4. No parameters supported
                                                                 java.security.InvalidAlgorithmParameterException: Unexpected parameters: javax.crypto.spec.OAEPParameterSpec@27572f4. No parameters supported
                                                                     at android.security.keystore.AndroidKeyStoreRSACipherSpi$PKCS1Padding.initAlgorithmSpecificParameters(AndroidKeyStoreRSACipherSpi.java:127)
                                                                     at android.security.keystore.AndroidKeyStoreCipherSpiBase.engineInit(AndroidKeyStoreCipherSpiBase.java:147)
                                                                     at javax.crypto.Cipher.tryTransformWithProvider(Cipher.java:2659)
                                                                     at javax.crypto.Cipher.tryCombinations(Cipher.java:2570)
                                                                     at javax.crypto.Cipher$SpiAndProviderUpdater.updateAndGetSpiAndProvider(Cipher.java:2475)
                                                                     at javax.crypto.Cipher.chooseProvider(Cipher.java:566)
                                                                     at javax.crypto.Cipher.init(Cipher.java:973)
                                                                     at javax.crypto.Cipher.init(Cipher.java:908)

这种例外非常罕见。它可以每周或每月发射一次。所以主要的是钥匙被包裹一次并成功打开。一切正常，直到一个神奇的时刻，我无法打开关键异常。

有没有人遇到同样的事情或有任何线索？

展开键时没有参数支持异常

0 个答案: