Examples with Certificate java.security.cert.Certificate used on opensource projects

Example 11 with Certificate

use of java.security.cert.Certificate in project android_frameworks_base by ParanoidAndroid.

the class RecoverySystem method verifyPackage.

/**
     * Verify the cryptographic signature of a system update package
     * before installing it.  Note that the package is also verified
     * separately by the installer once the device is rebooted into
     * the recovery system.  This function will return only if the
     * package was successfully verified; otherwise it will throw an
     * exception.
     *
     * Verification of a package can take significant time, so this
     * function should not be called from a UI thread.  Interrupting
     * the thread while this function is in progress will result in a
     * SecurityException being thrown (and the thread's interrupt flag
     * will be cleared).
     *
     * @param packageFile  the package to be verified
     * @param listener     an object to receive periodic progress
     * updates as verification proceeds.  May be null.
     * @param deviceCertsZipFile  the zip file of certificates whose
     * public keys we will accept.  Verification succeeds if the
     * package is signed by the private key corresponding to any
     * public key in this file.  May be null to use the system default
     * file (currently "/system/etc/security/otacerts.zip").
     *
     * @throws IOException if there were any errors reading the
     * package or certs files.
     * @throws GeneralSecurityException if verification failed
     */
public static void verifyPackage(File packageFile, ProgressListener listener, File deviceCertsZipFile) throws IOException, GeneralSecurityException {
    long fileLen = packageFile.length();
    RandomAccessFile raf = new RandomAccessFile(packageFile, "r");
    try {
        int lastPercent = 0;
        long lastPublishTime = System.currentTimeMillis();
        if (listener != null) {
            listener.onProgress(lastPercent);
        }
        raf.seek(fileLen - 6);
        byte[] footer = new byte[6];
        raf.readFully(footer);
        if (footer[2] != (byte) 0xff || footer[3] != (byte) 0xff) {
            throw new SignatureException("no signature in file (no footer)");
        }
        int commentSize = (footer[4] & 0xff) | ((footer[5] & 0xff) << 8);
        int signatureStart = (footer[0] & 0xff) | ((footer[1] & 0xff) << 8);
        byte[] eocd = new byte[commentSize + 22];
        raf.seek(fileLen - (commentSize + 22));
        raf.readFully(eocd);
        // end-of-central-directory record.
        if (eocd[0] != (byte) 0x50 || eocd[1] != (byte) 0x4b || eocd[2] != (byte) 0x05 || eocd[3] != (byte) 0x06) {
            throw new SignatureException("no signature in file (bad footer)");
        }
        for (int i = 4; i < eocd.length - 3; ++i) {
            if (eocd[i] == (byte) 0x50 && eocd[i + 1] == (byte) 0x4b && eocd[i + 2] == (byte) 0x05 && eocd[i + 3] == (byte) 0x06) {
                throw new SignatureException("EOCD marker found after start of EOCD");
            }
        }
        // The following code is largely copied from
        // JarUtils.verifySignature().  We could just *call* that
        // method here if that function didn't read the entire
        // input (ie, the whole OTA package) into memory just to
        // compute its message digest.
        BerInputStream bis = new BerInputStream(new ByteArrayInputStream(eocd, commentSize + 22 - signatureStart, signatureStart));
        ContentInfo info = (ContentInfo) ContentInfo.ASN1.decode(bis);
        SignedData signedData = info.getSignedData();
        if (signedData == null) {
            throw new IOException("signedData is null");
        }
        Collection encCerts = signedData.getCertificates();
        if (encCerts.isEmpty()) {
            throw new IOException("encCerts is empty");
        }
        // Take the first certificate from the signature (packages
        // should contain only one).
        Iterator it = encCerts.iterator();
        X509Certificate cert = null;
        if (it.hasNext()) {
            cert = new X509CertImpl((org.apache.harmony.security.x509.Certificate) it.next());
        } else {
            throw new SignatureException("signature contains no certificates");
        }
        List sigInfos = signedData.getSignerInfos();
        SignerInfo sigInfo;
        if (!sigInfos.isEmpty()) {
            sigInfo = (SignerInfo) sigInfos.get(0);
        } else {
            throw new IOException("no signer infos!");
        }
        // Check that the public key of the certificate contained
        // in the package equals one of our trusted public keys.
        HashSet<Certificate> trusted = getTrustedCerts(deviceCertsZipFile == null ? DEFAULT_KEYSTORE : deviceCertsZipFile);
        PublicKey signatureKey = cert.getPublicKey();
        boolean verified = false;
        for (Certificate c : trusted) {
            if (c.getPublicKey().equals(signatureKey)) {
                verified = true;
                break;
            }
        }
        if (!verified) {
            throw new SignatureException("signature doesn't match any trusted key");
        }
        // The signature cert matches a trusted key.  Now verify that
        // the digest in the cert matches the actual file data.
        // The verifier in recovery *only* handles SHA1withRSA
        // signatures.  SignApk.java always uses SHA1withRSA, no
        // matter what the cert says to use.  Ignore
        // cert.getSigAlgName(), and instead use whatever
        // algorithm is used by the signature (which should be
        // SHA1withRSA).
        String da = sigInfo.getDigestAlgorithm();
        String dea = sigInfo.getDigestEncryptionAlgorithm();
        String alg = null;
        if (da == null || dea == null) {
            // fall back to the cert algorithm if the sig one
            // doesn't look right.
            alg = cert.getSigAlgName();
        } else {
            alg = da + "with" + dea;
        }
        Signature sig = Signature.getInstance(alg);
        sig.initVerify(cert);
        // The signature covers all of the OTA package except the
        // archive comment and its 2-byte length.
        long toRead = fileLen - commentSize - 2;
        long soFar = 0;
        raf.seek(0);
        byte[] buffer = new byte[4096];
        boolean interrupted = false;
        while (soFar < toRead) {
            interrupted = Thread.interrupted();
            if (interrupted)
                break;
            int size = buffer.length;
            if (soFar + size > toRead) {
                size = (int) (toRead - soFar);
            }
            int read = raf.read(buffer, 0, size);
            sig.update(buffer, 0, read);
            soFar += read;
            if (listener != null) {
                long now = System.currentTimeMillis();
                int p = (int) (soFar * 100 / toRead);
                if (p > lastPercent && now - lastPublishTime > PUBLISH_PROGRESS_INTERVAL_MS) {
                    lastPercent = p;
                    lastPublishTime = now;
                    listener.onProgress(lastPercent);
                }
            }
        }
        if (listener != null) {
            listener.onProgress(100);
        }
        if (interrupted) {
            throw new SignatureException("verification was interrupted");
        }
        if (!sig.verify(sigInfo.getEncryptedDigest())) {
            throw new SignatureException("signature digest verification failed");
        }
    } finally {
        raf.close();
    }
}

Example 12 with Certificate

use of java.security.cert.Certificate in project android_frameworks_base by ParanoidAndroid.

the class SslCertificate method restoreState.

/**
     * Restores the certificate stored in the bundle
     * @param bundle The bundle with the certificate state stored in it
     * @return The SSL certificate stored in the bundle or null if fails
     */
public static SslCertificate restoreState(Bundle bundle) {
    if (bundle == null) {
        return null;
    }
    X509Certificate x509Certificate;
    byte[] bytes = bundle.getByteArray(X509_CERTIFICATE);
    if (bytes == null) {
        x509Certificate = null;
    } else {
        try {
            CertificateFactory certFactory = CertificateFactory.getInstance("X.509");
            Certificate cert = certFactory.generateCertificate(new ByteArrayInputStream(bytes));
            x509Certificate = (X509Certificate) cert;
        } catch (CertificateException e) {
            x509Certificate = null;
        }
    }
    return new SslCertificate(bundle.getString(ISSUED_TO), bundle.getString(ISSUED_BY), parseDate(bundle.getString(VALID_NOT_BEFORE)), parseDate(bundle.getString(VALID_NOT_AFTER)), x509Certificate);
}

Example 13 with Certificate

use of java.security.cert.Certificate in project android_frameworks_base by ParanoidAndroid.

the class KeyChain method toCertificate.

private static X509Certificate toCertificate(byte[] bytes) {
    if (bytes == null) {
        throw new IllegalArgumentException("bytes == null");
    }
    try {
        CertificateFactory certFactory = CertificateFactory.getInstance("X.509");
        Certificate cert = certFactory.generateCertificate(new ByteArrayInputStream(bytes));
        return (X509Certificate) cert;
    } catch (CertificateException e) {
        throw new AssertionError(e);
    }
}

Example 14 with Certificate

use of java.security.cert.Certificate in project android_frameworks_base by ParanoidAndroid.

the class AndroidKeyStore method engineGetCertificateAlias.

@Override
public String engineGetCertificateAlias(Certificate cert) {
    if (cert == null) {
        return null;
    }
    final Set<String> nonCaEntries = new HashSet<String>();
    /*
         * First scan the PrivateKeyEntry types. The KeyStoreSpi documentation
         * says to only compare the first certificate in the chain which is
         * equivalent to the USER_CERTIFICATE prefix for the Android keystore
         * convention.
         */
    final String[] certAliases = mKeyStore.saw(Credentials.USER_CERTIFICATE);
    if (certAliases != null) {
        for (String alias : certAliases) {
            final byte[] certBytes = mKeyStore.get(Credentials.USER_CERTIFICATE + alias);
            if (certBytes == null) {
                continue;
            }
            final Certificate c = toCertificate(certBytes);
            nonCaEntries.add(alias);
            if (cert.equals(c)) {
                return alias;
            }
        }
    }
    /*
         * Look at all the TrustedCertificateEntry types. Skip all the
         * PrivateKeyEntry we looked at above.
         */
    final String[] caAliases = mKeyStore.saw(Credentials.CA_CERTIFICATE);
    if (certAliases != null) {
        for (String alias : caAliases) {
            if (nonCaEntries.contains(alias)) {
                continue;
            }
            final byte[] certBytes = mKeyStore.get(Credentials.CA_CERTIFICATE + alias);
            if (certBytes == null) {
                continue;
            }
            final Certificate c = toCertificate(mKeyStore.get(Credentials.CA_CERTIFICATE + alias));
            if (cert.equals(c)) {
                return alias;
            }
        }
    }
    return null;
}

Example 15 with Certificate

use of java.security.cert.Certificate in project android_frameworks_base by ParanoidAndroid.

the class Credentials method convertFromPem.

/**
     * Convert objects from PEM format, which is used for
     * CA_CERTIFICATE and USER_CERTIFICATE entries.
     */
public static List<X509Certificate> convertFromPem(byte[] bytes) throws IOException, CertificateException {
    ByteArrayInputStream bai = new ByteArrayInputStream(bytes);
    Reader reader = new InputStreamReader(bai, Charsets.US_ASCII);
    PemReader pr = new PemReader(reader);
    CertificateFactory cf = CertificateFactory.getInstance("X509");
    List<X509Certificate> result = new ArrayList<X509Certificate>();
    PemObject o;
    while ((o = pr.readPemObject()) != null) {
        if (o.getType().equals("CERTIFICATE")) {
            Certificate c = cf.generateCertificate(new ByteArrayInputStream(o.getContent()));
            result.add((X509Certificate) c);
        } else {
            throw new IllegalArgumentException("Unknown type " + o.getType());
        }
    }
    pr.close();
    return result;
}