Question

如果我在Android 9上运行此代码，则会收到以下异常：

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：

KeyStore异常 android.os.ServiceSpecificException ：（代码7）在android.os.Parcel.createException（Parcel.java:1956）在android.os.Parcel.readException（Parcel.java:1910）在android.os.Parcel.readException（Parcel.java:1860）在android.security.IKeystoreService $ Stub $ Proxy.get（IKeystoreService.java:786）在android.security.KeyStore.get（KeyStore.java:195）在android.security.keystore.AndroidKeyStoreSpi.engineGetCertificateChain（AndroidKeyStoreSpi.java:118）在java.security.KeyStoreSpi.engineGetEntry（KeyStoreSpi.java:484）在java.security.KeyStore.getEntry（KeyStore.java:1560）在com.phenodev.testenc.KeyStoreHelper.getPrivateKeyEntry（KeyStoreHelper.java:151）在com.phenodev.testenc.KeyStoreHelper.encrypt（KeyStoreHelper.java:173）在com.phenodev.testenc.KeyStoreEncryptor.encrypt（KeyStoreEncryptor.java:19）

请帮助修复它。

Answer 1

最后我找到了解决方案。由于Android P (KeyStore.PrivateKeyEntry) keyStore.getEntry("alias", null)并不是获取私钥的正确方法，因此似乎。

我能够通过这种方式访问私钥/公钥来摆脱此警告

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

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

Answer 2

从AndroidKeyStore检索asymmetricKey时，我遇到了同样的问题

我基于Glass博士答案来获取密钥的解决方案如下：（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，我在装有Android P的模拟器和/或设备中没有警告

Answer 3

我找到了一种消除警告的解决方案，如果您也可以全部测试，那就太好了。实际上，调用方法的顺序就是问题所在。

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)
}

这是调用方法的正确顺序。

当您这样做时：

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（alias）：

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，您应该首先在之前创建并存储密钥对，然后再在密钥存储库中进行搜索。

现在有了MatPag的答案，它应该看起来像这样：

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
        }
}

Answer 4

在我的情况下，警告仍然存在，甚至是将密钥作为公认的解决方案，但仅当密钥尚不存在时。

该警告来自getCertificate调用，因此请避免该警告：

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

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

Android 9-KeyStore异常android.os.ServiceSpecificException

4 个答案: