Examples with ContentInfo com.android.apksig.internal.pkcs7.ContentInfo used on opensource projects

Example 6 with ContentInfo

use of com.android.apksig.internal.pkcs7.ContentInfo in project XobotOS by xamarin.

the class X509CertPathImpl method getInstance.

/**
     * Generates certification path object on the base of encoding provided via
     * array of bytes. The format of provided encoded form is specified by
     * parameter <code>encoding</code>.
     * @throws CertificateException if specified encoding form is not supported,
     * or some problems occurred during the decoding.
     */
public static X509CertPathImpl getInstance(byte[] in, String encoding) throws CertificateException {
    if (!encodings.contains(encoding)) {
        throw new CertificateException("Unsupported encoding");
    }
    try {
        if (encodingsArr[0].equals(encoding)) {
            // generate the object from PkiPath encoded form
            return (X509CertPathImpl) ASN1.decode(in);
        } else {
            // generate the object from PKCS #7 encoded form
            ContentInfo ci = (ContentInfo) ContentInfo.ASN1.decode(in);
            SignedData sd = ci.getSignedData();
            if (sd == null) {
                throw new CertificateException("Incorrect PKCS7 encoded form: missing signed data");
            }
            List<Certificate> certs = sd.getCertificates();
            if (certs == null) {
                certs = new ArrayList<Certificate>();
            }
            List<X509CertImpl> result = new ArrayList<X509CertImpl>();
            for (Certificate cert : certs) {
                result.add(new X509CertImpl(cert));
            }
            return new X509CertPathImpl(result, PKCS7, ci.getEncoded());
        }
    } catch (IOException e) {
        throw new CertificateException("Incorrect encoded form: " + e.getMessage());
    }
}

Example 7 with ContentInfo

use of com.android.apksig.internal.pkcs7.ContentInfo in project robovm by robovm.

the class JarUtils method verifySignature.

/**
     * This method handle all the work with  PKCS7, ASN1 encoding, signature verifying,
     * and certification path building.
     * See also PKCS #7: Cryptographic Message Syntax Standard:
     * http://www.ietf.org/rfc/rfc2315.txt
     * @param signature - the input stream of signature file to be verified
     * @param signatureBlock - the input stream of corresponding signature block file
     * @return array of certificates used to verify the signature file
     * @throws IOException - if some errors occurs during reading from the stream
     * @throws GeneralSecurityException - if signature verification process fails
     */
public static Certificate[] verifySignature(InputStream signature, InputStream signatureBlock) throws IOException, GeneralSecurityException {
    BerInputStream bis = new BerInputStream(signatureBlock);
    ContentInfo info = (ContentInfo) ContentInfo.ASN1.decode(bis);
    SignedData signedData = info.getSignedData();
    if (signedData == null) {
        throw new IOException("No SignedData found");
    }
    Collection<org.apache.harmony.security.x509.Certificate> encCerts = signedData.getCertificates();
    if (encCerts.isEmpty()) {
        return null;
    }
    X509Certificate[] certs = new X509Certificate[encCerts.size()];
    int i = 0;
    for (org.apache.harmony.security.x509.Certificate encCert : encCerts) {
        certs[i++] = new X509CertImpl(encCert);
    }
    List<SignerInfo> sigInfos = signedData.getSignerInfos();
    SignerInfo sigInfo;
    if (!sigInfos.isEmpty()) {
        sigInfo = sigInfos.get(0);
    } else {
        return null;
    }
    // Issuer
    X500Principal issuer = sigInfo.getIssuer();
    // Certificate serial number
    BigInteger snum = sigInfo.getSerialNumber();
    // Locate the certificate
    int issuerSertIndex = 0;
    for (i = 0; i < certs.length; i++) {
        if (issuer.equals(certs[i].getIssuerDN()) && snum.equals(certs[i].getSerialNumber())) {
            issuerSertIndex = i;
            break;
        }
    }
    if (i == certs.length) {
        // No issuer certificate found
        return null;
    }
    if (certs[issuerSertIndex].hasUnsupportedCriticalExtension()) {
        throw new SecurityException("Can not recognize a critical extension");
    }
    // Get Signature instance
    final String daOid = sigInfo.getDigestAlgorithm();
    final String daName = sigInfo.getDigestAlgorithmName();
    final String deaOid = sigInfo.getDigestEncryptionAlgorithm();
    String alg = null;
    Signature sig = null;
    if (daOid != null && deaOid != null) {
        alg = daOid + "with" + deaOid;
        try {
            sig = Signature.getInstance(alg);
        } catch (NoSuchAlgorithmException e) {
        }
        // Try to convert to names instead of OID.
        if (sig == null) {
            final String deaName = sigInfo.getDigestEncryptionAlgorithmName();
            alg = daName + "with" + deaName;
            try {
                sig = Signature.getInstance(alg);
            } catch (NoSuchAlgorithmException e) {
            }
        }
    }
    /*
         * TODO figure out the case in which we'd only use digestAlgorithm and
         * add a test for it.
         */
    if (sig == null && daOid != null) {
        alg = daOid;
        try {
            sig = Signature.getInstance(alg);
        } catch (NoSuchAlgorithmException e) {
        }
        if (sig == null && daName != null) {
            alg = daName;
            try {
                sig = Signature.getInstance(alg);
            } catch (NoSuchAlgorithmException e) {
            }
        }
    }
    // We couldn't find a valid Signature type.
    if (sig == null) {
        return null;
    }
    sig.initVerify(certs[issuerSertIndex]);
    // If the authenticatedAttributes field of SignerInfo contains more than zero attributes,
    // compute the message digest on the ASN.1 DER encoding of the Attributes value.
    // Otherwise, compute the message digest on the data.
    List<AttributeTypeAndValue> atr = sigInfo.getAuthenticatedAttributes();
    byte[] sfBytes = new byte[signature.available()];
    signature.read(sfBytes);
    if (atr == null) {
        sig.update(sfBytes);
    } else {
        sig.update(sigInfo.getEncodedAuthenticatedAttributes());
        // If the authenticatedAttributes field contains the message-digest attribute,
        // verify that it equals the computed digest of the signature file
        byte[] existingDigest = null;
        for (AttributeTypeAndValue a : atr) {
            if (Arrays.equals(a.getType().getOid(), MESSAGE_DIGEST_OID)) {
                if (existingDigest != null) {
                    throw new SecurityException("Too many MessageDigest attributes");
                }
                Collection<?> entries = a.getValue().getValues(ASN1OctetString.getInstance());
                if (entries.size() != 1) {
                    throw new SecurityException("Too many values for MessageDigest attribute");
                }
                existingDigest = (byte[]) entries.iterator().next();
            }
        }
        // message digest entry.
        if (existingDigest == null) {
            throw new SecurityException("Missing MessageDigest in Authenticated Attributes");
        }
        MessageDigest md = null;
        if (daOid != null) {
            md = MessageDigest.getInstance(daOid);
        }
        if (md == null && daName != null) {
            md = MessageDigest.getInstance(daName);
        }
        if (md == null) {
            return null;
        }
        byte[] computedDigest = md.digest(sfBytes);
        if (!Arrays.equals(existingDigest, computedDigest)) {
            throw new SecurityException("Incorrect MD");
        }
    }
    if (!sig.verify(sigInfo.getEncryptedDigest())) {
        throw new SecurityException("Incorrect signature");
    }
    return createChain(certs[issuerSertIndex], certs);
}

Example 8 with ContentInfo

use of com.android.apksig.internal.pkcs7.ContentInfo in project robovm by robovm.

the class X509CertFactoryImpl method engineGenerateCRLs.

/**
     * @see java.security.cert.CertificateFactorySpi#engineGenerateCRLs(InputStream)
     * method documentation for more info
     */
public Collection<? extends CRL> engineGenerateCRLs(InputStream inStream) throws CRLException {
    if (inStream == null) {
        throw new CRLException("inStream == null");
    }
    ArrayList<CRL> result = new ArrayList<CRL>();
    try {
        if (!inStream.markSupported()) {
            inStream = new RestoringInputStream(inStream);
        }
        // if it is PEM encoded form this array will contain the encoding
        // so ((it is PEM) <-> (encoding != null))
        byte[] encoding = null;
        // The following by SEQUENCE ASN.1 tag, used for
        // recognizing the data format
        // (is it PKCS7 ContentInfo structure, X.509 CRL, or
        // unsupported encoding)
        int second_asn1_tag = -1;
        inStream.mark(1);
        int ch;
        while ((ch = inStream.read()) != -1) {
            // check if it is PEM encoded form
            if (ch == '-') {
                // beginning of PEM encoding ('-' char)
                // decode PEM chunk and store its content (ASN.1 encoding)
                encoding = decodePEM(inStream, FREE_BOUND_SUFFIX);
            } else if (ch == 0x30) {
                // beginning of ASN.1 sequence (0x30)
                encoding = null;
                inStream.reset();
                // prepare for data format determination
                inStream.mark(CRL_CACHE_SEED_LENGTH);
            } else {
                // unsupported data
                if (result.size() == 0) {
                    throw new CRLException("Unsupported encoding");
                } else {
                    // it can be trailing user data,
                    // so keep it in the stream
                    inStream.reset();
                    return result;
                }
            }
            // Check the data format
            BerInputStream in = (encoding == null) ? new BerInputStream(inStream) : new BerInputStream(encoding);
            // read the next ASN.1 tag
            second_asn1_tag = in.next();
            if (encoding == null) {
                // keep whole structure in the stream
                inStream.reset();
            }
            // check if it is a TBSCertList structure
            if (second_asn1_tag != ASN1Constants.TAG_C_SEQUENCE) {
                if (result.size() == 0) {
                    // whether it is PKCS7 structure
                    break;
                } else {
                    // so return what we already read
                    return result;
                }
            } else {
                if (encoding == null) {
                    result.add(getCRL(inStream));
                } else {
                    result.add(getCRL(encoding));
                }
            }
            inStream.mark(1);
        }
        if (result.size() != 0) {
            // the stream was read out
            return result;
        } else if (ch == -1) {
            throw new CRLException("There is no data in the stream");
        }
        // else: check if it is PKCS7
        if (second_asn1_tag == ASN1Constants.TAG_OID) {
            // it is PKCS7 ContentInfo structure, so decode it
            ContentInfo info = (ContentInfo) ((encoding != null) ? ContentInfo.ASN1.decode(encoding) : ContentInfo.ASN1.decode(inStream));
            // retrieve SignedData
            SignedData data = info.getSignedData();
            if (data == null) {
                throw new CRLException("Invalid PKCS7 data provided");
            }
            List<CertificateList> crls = data.getCRLs();
            if (crls != null) {
                for (CertificateList crl : crls) {
                    result.add(new X509CRLImpl(crl));
                }
            }
            return result;
        }
        // else: Unknown data format
        throw new CRLException("Unsupported encoding");
    } catch (IOException e) {
        throw new CRLException(e);
    }
}

Example 9 with ContentInfo

use of com.android.apksig.internal.pkcs7.ContentInfo in project robovm by robovm.

the class X509CertFactoryImpl method engineGenerateCertificates.

/**
     * Generates the collection of the certificates on the base of provided
     * via input stream encodings.
     * @see java.security.cert.CertificateFactorySpi#engineGenerateCertificates(InputStream)
     * method documentation for more info
     */
public Collection<? extends Certificate> engineGenerateCertificates(InputStream inStream) throws CertificateException {
    if (inStream == null) {
        throw new CertificateException("inStream == null");
    }
    ArrayList<Certificate> result = new ArrayList<Certificate>();
    try {
        if (!inStream.markSupported()) {
            // create the mark supporting wrapper
            inStream = new RestoringInputStream(inStream);
        }
        // if it is PEM encoded form this array will contain the encoding
        // so ((it is PEM) <-> (encoding != null))
        byte[] encoding = null;
        // The following by SEQUENCE ASN.1 tag, used for
        // recognizing the data format
        // (is it PKCS7 ContentInfo structure, X.509 Certificate, or
        // unsupported encoding)
        int second_asn1_tag = -1;
        inStream.mark(1);
        int ch;
        while ((ch = inStream.read()) != -1) {
            // check if it is PEM encoded form
            if (ch == '-') {
                // beginning of PEM encoding ('-' char)
                // decode PEM chunk and store its content (ASN.1 encoding)
                encoding = decodePEM(inStream, FREE_BOUND_SUFFIX);
            } else if (ch == 0x30) {
                // beginning of ASN.1 sequence (0x30)
                encoding = null;
                inStream.reset();
                // prepare for data format determination
                inStream.mark(CERT_CACHE_SEED_LENGTH);
            } else {
                // unsupported data
                if (result.size() == 0) {
                    throw new CertificateException("Unsupported encoding");
                } else {
                    // it can be trailing user data,
                    // so keep it in the stream
                    inStream.reset();
                    return result;
                }
            }
            // Check the data format
            BerInputStream in = (encoding == null) ? new BerInputStream(inStream) : new BerInputStream(encoding);
            // read the next ASN.1 tag
            // inStream position changed
            second_asn1_tag = in.next();
            if (encoding == null) {
                // keep whole structure in the stream
                inStream.reset();
            }
            // check if it is a TBSCertificate structure
            if (second_asn1_tag != ASN1Constants.TAG_C_SEQUENCE) {
                if (result.size() == 0) {
                    // whether it is PKCS7 structure
                    break;
                } else {
                    // so return what we already read
                    return result;
                }
            } else {
                if (encoding == null) {
                    result.add(getCertificate(inStream));
                } else {
                    result.add(getCertificate(encoding));
                }
            }
            // mark for the next iteration
            inStream.mark(1);
        }
        if (result.size() != 0) {
            // some Certificates have been read
            return result;
        } else if (ch == -1) {
            /* No data in the stream, so return the empty collection. */
            return result;
        }
        // else: check if it is PKCS7
        if (second_asn1_tag == ASN1Constants.TAG_OID) {
            // it is PKCS7 ContentInfo structure, so decode it
            ContentInfo info = (ContentInfo) ((encoding != null) ? ContentInfo.ASN1.decode(encoding) : ContentInfo.ASN1.decode(inStream));
            // retrieve SignedData
            SignedData data = info.getSignedData();
            if (data == null) {
                throw new CertificateException("Invalid PKCS7 data provided");
            }
            List<org.apache.harmony.security.x509.Certificate> certs = data.getCertificates();
            if (certs != null) {
                for (org.apache.harmony.security.x509.Certificate cert : certs) {
                    result.add(new X509CertImpl(cert));
                }
            }
            return result;
        }
        // else: Unknown data format
        throw new CertificateException("Unsupported encoding");
    } catch (IOException e) {
        throw new CertificateException(e);
    }
}

Example 10 with ContentInfo

use of com.android.apksig.internal.pkcs7.ContentInfo in project XobotOS by xamarin.

the class JarUtils method verifySignature.

/**
     * This method handle all the work with  PKCS7, ASN1 encoding, signature verifying,
     * and certification path building.
     * See also PKCS #7: Cryptographic Message Syntax Standard:
     * http://www.ietf.org/rfc/rfc2315.txt
     * @param signature - the input stream of signature file to be verified
     * @param signatureBlock - the input stream of corresponding signature block file
     * @return array of certificates used to verify the signature file
     * @throws IOException - if some errors occurs during reading from the stream
     * @throws GeneralSecurityException - if signature verification process fails
     */
public static Certificate[] verifySignature(InputStream signature, InputStream signatureBlock) throws IOException, GeneralSecurityException {
    BerInputStream bis = new BerInputStream(signatureBlock);
    ContentInfo info = (ContentInfo) ContentInfo.ASN1.decode(bis);
    SignedData signedData = info.getSignedData();
    if (signedData == null) {
        throw new IOException("No SignedData found");
    }
    Collection<org.apache.harmony.security.x509.Certificate> encCerts = signedData.getCertificates();
    if (encCerts.isEmpty()) {
        return null;
    }
    X509Certificate[] certs = new X509Certificate[encCerts.size()];
    int i = 0;
    for (org.apache.harmony.security.x509.Certificate encCert : encCerts) {
        certs[i++] = new X509CertImpl(encCert);
    }
    List<SignerInfo> sigInfos = signedData.getSignerInfos();
    SignerInfo sigInfo;
    if (!sigInfos.isEmpty()) {
        sigInfo = sigInfos.get(0);
    } else {
        return null;
    }
    // Issuer
    X500Principal issuer = sigInfo.getIssuer();
    // Certificate serial number
    BigInteger snum = sigInfo.getSerialNumber();
    // Locate the certificate
    int issuerSertIndex = 0;
    for (i = 0; i < certs.length; i++) {
        if (issuer.equals(certs[i].getIssuerDN()) && snum.equals(certs[i].getSerialNumber())) {
            issuerSertIndex = i;
            break;
        }
    }
    if (i == certs.length) {
        // No issuer certificate found
        return null;
    }
    if (certs[issuerSertIndex].hasUnsupportedCriticalExtension()) {
        throw new SecurityException("Can not recognize a critical extension");
    }
    // Get Signature instance
    Signature sig = null;
    String da = sigInfo.getDigestAlgorithm();
    String dea = sigInfo.getDigestEncryptionAlgorithm();
    String alg = null;
    if (da != null && dea != null) {
        alg = da + "with" + dea;
        try {
            sig = OpenSSLSignature.getInstance(alg);
        } catch (NoSuchAlgorithmException e) {
        }
    }
    if (sig == null) {
        alg = da;
        if (alg == null) {
            return null;
        }
        try {
            sig = OpenSSLSignature.getInstance(alg);
        } catch (NoSuchAlgorithmException e) {
            return null;
        }
    }
    sig.initVerify(certs[issuerSertIndex]);
    // If the authenticatedAttributes field of SignerInfo contains more than zero attributes,
    // compute the message digest on the ASN.1 DER encoding of the Attributes value.
    // Otherwise, compute the message digest on the data.
    List<AttributeTypeAndValue> atr = sigInfo.getAuthenticatedAttributes();
    byte[] sfBytes = new byte[signature.available()];
    signature.read(sfBytes);
    if (atr == null) {
        sig.update(sfBytes);
    } else {
        sig.update(sigInfo.getEncodedAuthenticatedAttributes());
        // If the authenticatedAttributes field contains the message-digest attribute,
        // verify that it equals the computed digest of the signature file
        byte[] existingDigest = null;
        for (AttributeTypeAndValue a : atr) {
            if (Arrays.equals(a.getType().getOid(), MESSAGE_DIGEST_OID)) {
            //TODO value                    existingDigest = a.AttributeValue;
            }
        }
        if (existingDigest != null) {
            MessageDigest md = MessageDigest.getInstance(sigInfo.getDigestAlgorithm());
            byte[] computedDigest = md.digest(sfBytes);
            if (!Arrays.equals(existingDigest, computedDigest)) {
                throw new SecurityException("Incorrect MD");
            }
        }
    }
    if (!sig.verify(sigInfo.getEncryptedDigest())) {
        throw new SecurityException("Incorrect signature");
    }
    return createChain(certs[issuerSertIndex], certs);
}