Android9- KeyStore异常android.os.ServiceSpecificException

Question

如果我在Android 9上运行这段代码，我会收到以下异常：

private static KeyStore.PrivateKeyEntry getPrivateKeyEntry(String alias) {
        try {
            KeyStore ks = KeyStore
                    .getInstance(SecurityConstants.KEYSTORE_PROVIDER_ANDROID_KEYSTORE);
            ks.load(null);
            KeyStore.Entry entry = ks.getEntry(alias, null);

            if (entry == null) {
                Log.w(TAG, "No key found under alias: " + alias);
                Log.w(TAG, "Exiting signData()...");
                return null;
            }

            if (!(entry instanceof KeyStore.PrivateKeyEntry)) {
                Log.w(TAG, "Not an instance of a PrivateKeyEntry");
                Log.w(TAG, "Exiting signData()...");
                return null;
            }
            return (KeyStore.PrivateKeyEntry) entry;
        } catch (Exception e) {
            Log.e(TAG, e.getMessage(), e);
            return null;
        }
    }

例外：

android.os.Parcel.createException(Parcel.java:1956) at android.os.Parcel.readException(Parcel.java:1910) at android.os.Parcel.readException(Parcel.java:1860) at android.security.IKeystoreService$Stub$Proxy.get(IKeystoreService.java:786) at android.security.KeyStore.get(KeyStore.java:195)在android.security.keystore.AndroidKeyStoreSpi.engineGetCertificateChain(AndroidKeyStoreSpi.java:118) at java.security.KeyStoreSpi.engineGetEntry(KeyStoreSpi.java:484) at java.security.KeyStore.getEntry(KeyStore.java:1560) at com.phenodev.testenc.KeyStoreHelper.getPrivateKeyEntry(KeyStoreHelper.java:151) at com.phenodev.testenc.KeyStoreHelper.encrypt(KeyStoreHelper.java:173) at com.phenodev.testenc.KeyStoreEncryptor.encrypt(KeyStoreEncryptor.java:19)

请帮我修一下。

Answer 1

最后我找到了解决办法。看起来，因为Android (KeyStore.PrivateKeyEntry) keyStore.getEntry("alias", null)并不是获取私钥的正确方式。

我以这种方式访问私钥/公钥，从而消除了这个警告。

KeyStore keyStore = KeyStore.getInstance("AndroidKeyStore");
keyStore.load(null);

PrivateKey privateKey = (PrivateKey) keyStore.getKey("alias", null);
PublicKey publicKey = keyStore.getCertificate("alias").getPublicKey();

Answer 2

我在从asymmetricKey检索AndroidKeyStore时也遇到了同样的问题

我基于格拉斯博士的解决方案是：(aliasKey是您的别名字符串)

PublicKey：

val keyStore = KeyStore.getInstance("AndroidKeyStore")
keyStore.load(null)

val asymmetricPublicKey = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
    keyStore.getCertificate(aliasKey).publicKey
} else {
    val asymmetricKey = keyStore.getEntry(aliasKey, null) as KeyStore.PrivateKeyEntry
    asymmetricKey.certificate.publicKey
}

PrivateKey：

val keyStore = KeyStore.getInstance("AndroidKeyStore")
keyStore.load(null)

val asymmetricPrivateKey = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
    keyStore.getKey(aliasKey, null) as PrivateKey
} else {
    val asymmetricKey = keyStore.getEntry(aliasKey, null) as KeyStore.PrivateKeyEntry
    asymmetricKey.privateKey
}

使用此代码，我在带有Android的模拟器和/或设备中没有任何警告。

Answer 3

我找到了一个如何删除警告的解决方案，如果你也能测试的话，那就太好了。实际上，调用方法的顺序是问题所在。

val privateKey = keyStore.getKey(alias, null)
val publicKey = if (privateKey != null) keyStore.getCertificate(alias).publicKey else null

if (privateKey != null && publicKey != null) {
    KeyPair(publicKey, privateKey as PrivateKey)
}

这是如何调用方法的正确顺序。

当你这样做的时候：

val privateKey = keyStore.getKey(alias, null)
val certificate = keyStore.getCertificate(alias)

if (privateKey != null && certificate != null) {
    KeyPair(certificate.publicKey, privateKey as PrivateKey)
}

您将收到以下警告(由于keyStore.getCertificate(别名))：

KeyStore exception
android.os.ServiceSpecificException:  (code 7)
    at android.os.Parcel.createException(Parcel.java:2085)
    at android.os.Parcel.readException(Parcel.java:2039)
    at android.os.Parcel.readException(Parcel.java:1987)
    at android.security.keystore.IKeystoreService$Stub$Proxy.get(IKeystoreService.java:978)
    at android.security.KeyStore.get(KeyStore.java:236)
    at android.security.KeyStore.get(KeyStore.java:225)
    at android.security.keystore.AndroidKeyStoreSpi.engineGetCertificate(AndroidKeyStoreSpi.java:160)
    at java.security.KeyStore.getCertificate(KeyStore.java:1120)

这意味着，没有私钥，您应该首先创建和存储一个键盘，然后才能在密钥存储区中搜索它。

现在，使用MatPag的答案，它应该如下所示：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
        val privateKey = keyStore.getKey(alias, null)
        val publicKey = if (privateKey != null) keyStore.getCertificate(alias).publicKey else null

        return if (privateKey != null && publicKey != null) {
            KeyPair(publicKey, privateKey as PrivateKey)
        } else {
            null
        }
} else {
        val asymmetricKey = keyStore.getEntry(alias, null) as KeyStore.PrivateKeyEntry
        val privateKey = asymmetricKey.privateKey
        val publicKey = if(privateKey != null) asymmetricKey.certificate.publicKey else null

        return if(privateKey != null && publicKey != null) {
            KeyPair(publicKey, privateKey as PrivateKey)
        } else {
            null
        }
}