am 5a720bb9: Merge "AndroidKeyStore: add key wrapping test"

import java.util.Iterator;

import java.util.Set;

import javax.crypto.Cipher;

import javax.crypto.SecretKey;

import javax.crypto.spec.SecretKeySpec;

import javax.security.auth.x500.X500Principal;

public class AndroidKeyStoreTest extends AndroidTestCase {

        } catch (UnsupportedOperationException success) {

        }

    }

    private void setupKey() throws Exception {

        final String privateKeyAlias = Credentials.USER_PRIVATE_KEY + TEST_ALIAS_1;

        assertTrue(mAndroidKeyStore.generate(privateKeyAlias));

        X509Certificate cert = generateCertificate(mAndroidKeyStore, TEST_ALIAS_1, TEST_SERIAL_1,

                TEST_DN_1, NOW, NOW_PLUS_10_YEARS);

        assertTrue(mAndroidKeyStore.put(Credentials.USER_CERTIFICATE + TEST_ALIAS_1,

                cert.getEncoded()));

    }

    public void testKeyStore_KeyOperations_Wrap_Success() throws Exception {

        mKeyStore.load(null, null);

        setupKey();

        // Test key usage

        Entry e = mKeyStore.getEntry(TEST_ALIAS_1, null);

        assertNotNull(e);

        assertTrue(e instanceof PrivateKeyEntry);

        PrivateKeyEntry privEntry = (PrivateKeyEntry) e;

        PrivateKey privKey = privEntry.getPrivateKey();

        assertNotNull(privKey);

        PublicKey pubKey = privEntry.getCertificate().getPublicKey();

        Cipher c = Cipher.getInstance("RSA/ECB/PKCS1Padding");

        c.init(Cipher.WRAP_MODE, pubKey);

        byte[] expectedKey = new byte[] {

                0x00, 0x05, (byte) 0xAA, (byte) 0x0A5, (byte) 0xFF, 0x55, 0x0A

        };

        SecretKey expectedSecret = new SecretKeySpec(expectedKey, "AES");

        byte[] wrappedExpected = c.wrap(expectedSecret);

        c.init(Cipher.UNWRAP_MODE, privKey);

        SecretKey actualSecret = (SecretKey) c.unwrap(wrappedExpected, "AES", Cipher.SECRET_KEY);

        assertEquals(Arrays.toString(expectedSecret.getEncoded()),

                Arrays.toString(actualSecret.getEncoded()));

    }

}