Merge "Load fewer classes when AndroidKeyStore provider is installed."

public class AndroidKeyStoreProvider extends Provider {

    public static final String PROVIDER_NAME = "AndroidKeyStore";

    // IMPLEMENTATION NOTE: Class names are hard-coded in this provider to avoid loading these

    // classes when this provider is instantiated and installed early on during each app's

    // initialization process.

    private static final String PACKAGE_NAME = "android.security";

    private static final String KEYSTORE_SECRET_KEY_CLASS_NAME =

            PACKAGE_NAME + ".KeyStoreSecretKey";

    public AndroidKeyStoreProvider() {

        super(PROVIDER_NAME, 1.0, "Android KeyStore security provider");

        // java.security.KeyStore

        put("KeyStore." + AndroidKeyStore.NAME, AndroidKeyStore.class.getName());

        put("KeyStore.AndroidKeyStore", PACKAGE_NAME + ".AndroidKeyStore");

        // java.security.KeyPairGenerator

        put("KeyPairGenerator.EC", AndroidKeyPairGenerator.EC.class.getName());

        put("KeyPairGenerator.RSA", AndroidKeyPairGenerator.RSA.class.getName());

        put("KeyPairGenerator.EC", PACKAGE_NAME + ".AndroidKeyPairGenerator$EC");

        put("KeyPairGenerator.RSA", PACKAGE_NAME +  ".AndroidKeyPairGenerator$RSA");

        // javax.crypto.KeyGenerator

        put("KeyGenerator.AES", KeyStoreKeyGeneratorSpi.AES.class.getName());

        put("KeyGenerator.HmacSHA256", KeyStoreKeyGeneratorSpi.HmacSHA256.class.getName());

        put("KeyGenerator.AES", PACKAGE_NAME + ".KeyStoreKeyGeneratorSpi$AES");

        put("KeyGenerator.HmacSHA256", PACKAGE_NAME + ".KeyStoreKeyGeneratorSpi$HmacSHA256");

        // java.security.SecretKeyFactory

        put("SecretKeyFactory.AES", KeyStoreSecretKeyFactorySpi.class.getName());

        put("SecretKeyFactory.HmacSHA256", KeyStoreSecretKeyFactorySpi.class.getName());

        put("SecretKeyFactory.AES", PACKAGE_NAME + ".KeyStoreSecretKeyFactorySpi");

        put("SecretKeyFactory.HmacSHA256", PACKAGE_NAME + ".KeyStoreSecretKeyFactorySpi");

        // javax.crypto.Mac

        putMacImpl("HmacSHA256", KeyStoreHmacSpi.HmacSHA256.class.getName());

        putMacImpl("HmacSHA256", PACKAGE_NAME + ".KeyStoreHmacSpi$HmacSHA256");

        // javax.crypto.Cipher

        putSymmetricCipherImpl("AES/ECB/NoPadding",

                KeyStoreCipherSpi.AES.ECB.NoPadding.class.getName());

                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$ECB$NoPadding");

        putSymmetricCipherImpl("AES/ECB/PKCS7Padding",

                KeyStoreCipherSpi.AES.ECB.PKCS7Padding.class.getName());

                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$ECB$PKCS7Padding");

        putSymmetricCipherImpl("AES/CBC/NoPadding",

                KeyStoreCipherSpi.AES.CBC.NoPadding.class.getName());

                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$CBC$NoPadding");

        putSymmetricCipherImpl("AES/CBC/PKCS7Padding",

                KeyStoreCipherSpi.AES.CBC.PKCS7Padding.class.getName());

                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$CBC$PKCS7Padding");

        putSymmetricCipherImpl("AES/CTR/NoPadding",

                KeyStoreCipherSpi.AES.CTR.NoPadding.class.getName());

                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$CTR$NoPadding");

    }

    private void putMacImpl(String algorithm, String implClass) {

        put("Mac." + algorithm, implClass);

        put("Mac." + algorithm + " SupportedKeyClasses", KeyStoreSecretKey.class.getName());

        put("Mac." + algorithm + " SupportedKeyClasses", KEYSTORE_SECRET_KEY_CLASS_NAME);

    }

    private void putSymmetricCipherImpl(String transformation, String implClass) {

        put("Cipher." + transformation, implClass);

        put("Cipher." + transformation + " SupportedKeyClasses", KeyStoreSecretKey.class.getName());

        put("Cipher." + transformation + " SupportedKeyClasses", KEYSTORE_SECRET_KEY_CLASS_NAME);

    }

    /**

android.provider.Settings$System

android.provider.Telephony$Mms

android.renderscript.RenderScript

android.security.AndroidKeyPairGenerator

android.security.AndroidKeyStore

android.security.AndroidKeyStoreProvider

android.speech.tts.TextToSpeechService

android.speech.tts.TextToSpeechService$SpeechItemV1