Examples with Signature android.content.pm.Signature used on opensource projects

Example 11 with Signature

use of android.content.pm.Signature in project XobotOS by xamarin.

the class NetworkPolicyManager method isUidValidForPolicy.

/**
     * Check if given UID can have a {@link #setUidPolicy(int, int)} defined,
     * usually to protect critical system services.
     */
public static boolean isUidValidForPolicy(Context context, int uid) {
    // first, quick-reject non-applications
    if (uid < android.os.Process.FIRST_APPLICATION_UID || uid > android.os.Process.LAST_APPLICATION_UID) {
        return false;
    }
    if (!ALLOW_PLATFORM_APP_POLICY) {
        final PackageManager pm = context.getPackageManager();
        final HashSet<Signature> systemSignature;
        try {
            systemSignature = Sets.newHashSet(pm.getPackageInfo("android", GET_SIGNATURES).signatures);
        } catch (NameNotFoundException e) {
            throw new RuntimeException("problem finding system signature", e);
        }
        try {
            // reject apps signed with platform cert
            for (String packageName : pm.getPackagesForUid(uid)) {
                final HashSet<Signature> packageSignature = Sets.newHashSet(pm.getPackageInfo(packageName, GET_SIGNATURES).signatures);
                if (packageSignature.containsAll(systemSignature)) {
                    return false;
                }
            }
        } catch (NameNotFoundException e) {
        }
    }
    // nothing found above; we can apply policy to UID
    return true;
}

Example 12 with Signature

use of android.content.pm.Signature in project platform_frameworks_base by android.

the class WebViewFactory method signaturesEquals.

/**
     * Returns true if the signatures match, false otherwise
     */
private static boolean signaturesEquals(Signature[] s1, Signature[] s2) {
    if (s1 == null) {
        return s2 == null;
    }
    if (s2 == null)
        return false;
    ArraySet<Signature> set1 = new ArraySet<>();
    for (Signature signature : s1) {
        set1.add(signature);
    }
    ArraySet<Signature> set2 = new ArraySet<>();
    for (Signature signature : s2) {
        set2.add(signature);
    }
    return set1.equals(set2);
}

Example 13 with Signature

use of android.content.pm.Signature in project carat by amplab.

the class SamplingLibrary method getSignatures.

public static List<String> getSignatures(PackageInfo pak) {
    List<String> sigList = new LinkedList<String>();
    String[] pmInfos = pak.requestedPermissions;
    if (pmInfos != null) {
        byte[] bytes = getPermissionBytes(pmInfos);
        String hexB = convertToHex(bytes);
        sigList.add(hexB);
    }
    Signature[] sigs = pak.signatures;
    for (Signature s : sigs) {
        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("SHA-1");
            md.update(s.toByteArray());
            byte[] dig = md.digest();
            // Add SHA-1
            sigList.add(convertToHex(dig));
            CertificateFactory fac = CertificateFactory.getInstance("X.509");
            if (fac == null)
                continue;
            X509Certificate cert = (X509Certificate) fac.generateCertificate(new ByteArrayInputStream(s.toByteArray()));
            if (cert == null)
                continue;
            PublicKey pkPublic = cert.getPublicKey();
            if (pkPublic == null)
                continue;
            String al = pkPublic.getAlgorithm();
            if (al.equals("RSA")) {
                md = MessageDigest.getInstance("SHA-256");
                RSAPublicKey rsa = (RSAPublicKey) pkPublic;
                byte[] data = rsa.getModulus().toByteArray();
                if (data[0] == 0) {
                    byte[] copy = new byte[data.length - 1];
                    System.arraycopy(data, 1, copy, 0, data.length - 1);
                    md.update(copy);
                } else
                    md.update(data);
                dig = md.digest();
                // Add SHA-256 of modulus
                sigList.add(convertToHex(dig));
            } else if (al.equals("DSA")) {
                DSAPublicKey dsa = (DSAPublicKey) pkPublic;
                md = MessageDigest.getInstance("SHA-256");
                byte[] data = dsa.getY().toByteArray();
                if (data[0] == 0) {
                    byte[] copy = new byte[data.length - 1];
                    System.arraycopy(data, 1, copy, 0, data.length - 1);
                    md.update(copy);
                } else
                    md.update(data);
                dig = md.digest();
                // Add SHA-256 of public key (DSA)
                sigList.add(convertToHex(dig));
            } else {
                Log.e("SamplingLibrary", "Weird algorithm: " + al + " for " + pak.packageName);
            }
        } catch (NoSuchAlgorithmException e) {
        // Do nothing
        } catch (CertificateException e) {
        // Do nothing
        }
    }
    return sigList;
}

Example 14 with Signature

use of android.content.pm.Signature in project SeriesGuide by UweTrottmann.

the class Utils method hasUnlockKeyInstalled.

/**
     * Returns if the user has a valid copy of X Pass installed.
     */
private static boolean hasUnlockKeyInstalled(Context context) {
    try {
        // Get our signing key
        PackageManager manager = context.getPackageManager();
        @SuppressLint("PackageManagerGetSignatures") PackageInfo appInfoSeriesGuide = manager.getPackageInfo(context.getApplicationContext().getPackageName(), PackageManager.GET_SIGNATURES);
        // Try to find the X signing key
        @SuppressLint("PackageManagerGetSignatures") PackageInfo appInfoSeriesGuideX = manager.getPackageInfo("com.battlelancer.seriesguide.x", PackageManager.GET_SIGNATURES);
        Signature[] sgSignatures = appInfoSeriesGuide.signatures;
        Signature[] xSignatures = appInfoSeriesGuideX.signatures;
        if (sgSignatures.length == xSignatures.length) {
            for (int i = 0; i < sgSignatures.length; i++) {
                if (!sgSignatures[i].toCharsString().equals(xSignatures[i].toCharsString())) {
                    // a signature does not match
                    return false;
                }
            }
            return true;
        }
    } catch (NameNotFoundException e) {
    // Expected exception that occurs if the package is not present.
    }
    return false;
}

Example 15 with Signature

use of android.content.pm.Signature in project android_frameworks_base by ParanoidAndroid.

the class PackageManagerBackupAgent method writeSignatureArray.

private static void writeSignatureArray(DataOutputStream out, Signature[] sigs) throws IOException {
    // write the number of signatures in the array
    out.writeInt(sigs.length);
    // write the signatures themselves, length + flattened buffer
    for (Signature sig : sigs) {
        byte[] flat = sig.toByteArray();
        out.writeInt(flat.length);
        out.write(flat);
    }
}