Examples with EncryptedContentInfo com.github.zhenwei.pkix.util.asn1.cms.EncryptedContentInfo used on opensource projects

Example 1 with EncryptedContentInfo

use of com.github.zhenwei.pkix.util.asn1.cms.EncryptedContentInfo in project PdfBox-Android by TomRoush.

the class PublicKeySecurityHandler method createDERForRecipient.

private ASN1Primitive createDERForRecipient(byte[] in, X509Certificate cert) throws IOException, GeneralSecurityException {
    String algorithm = PKCSObjectIdentifiers.RC2_CBC.getId();
    AlgorithmParameterGenerator apg;
    KeyGenerator keygen;
    Cipher cipher;
    try {
        apg = AlgorithmParameterGenerator.getInstance(algorithm, SecurityProvider.getProvider());
        keygen = KeyGenerator.getInstance(algorithm, SecurityProvider.getProvider());
        cipher = Cipher.getInstance(algorithm, SecurityProvider.getProvider());
    } catch (NoSuchAlgorithmException e) {
        // happens when using the command line app .jar file
        throw new IOException("Could not find a suitable javax.crypto provider for algorithm " + algorithm + "; possible reason: using an unsigned .jar file", e);
    } catch (NoSuchPaddingException e) {
        // should never happen, if this happens throw IOException instead
        throw new RuntimeException("Could not find a suitable javax.crypto provider", e);
    }
    AlgorithmParameters parameters = apg.generateParameters();
    ASN1InputStream input = new ASN1InputStream(parameters.getEncoded("ASN.1"));
    ASN1Primitive object = input.readObject();
    input.close();
    keygen.init(128);
    SecretKey secretkey = keygen.generateKey();
    cipher.init(1, secretkey, parameters);
    byte[] bytes = cipher.doFinal(in);
    KeyTransRecipientInfo recipientInfo = computeRecipientInfo(cert, secretkey.getEncoded());
    DERSet set = new DERSet(new RecipientInfo(recipientInfo));
    AlgorithmIdentifier algorithmId = new AlgorithmIdentifier(new ASN1ObjectIdentifier(algorithm), object);
    EncryptedContentInfo encryptedInfo = new EncryptedContentInfo(PKCSObjectIdentifiers.data, algorithmId, new DEROctetString(bytes));
    EnvelopedData enveloped = new EnvelopedData(null, set, encryptedInfo, (ASN1Set) null);
    ContentInfo contentInfo = new ContentInfo(PKCSObjectIdentifiers.envelopedData, enveloped);
    return contentInfo.toASN1Primitive();
}

Example 2 with EncryptedContentInfo

use of com.github.zhenwei.pkix.util.asn1.cms.EncryptedContentInfo in project LinLong-Java by zhenwei1108.

the class CMSEncryptedData method getContentStream.

public CMSTypedStream getContentStream(InputDecryptorProvider inputDecryptorProvider) throws CMSException {
    try {
        EncryptedContentInfo encContentInfo = encryptedData.getEncryptedContentInfo();
        InputDecryptor decrytor = inputDecryptorProvider.get(encContentInfo.getContentEncryptionAlgorithm());
        ByteArrayInputStream encIn = new ByteArrayInputStream(encContentInfo.getEncryptedContent().getOctets());
        return new CMSTypedStream(encContentInfo.getContentType(), decrytor.getInputStream(encIn));
    } catch (Exception e) {
        throw new CMSException("unable to create stream: " + e.getMessage(), e);
    }
}

Example 3 with EncryptedContentInfo

use of com.github.zhenwei.pkix.util.asn1.cms.EncryptedContentInfo in project pdfbox by apache.

the class PublicKeySecurityHandler method createDERForRecipient.

private ASN1Primitive createDERForRecipient(byte[] in, X509Certificate cert) throws IOException, GeneralSecurityException {
    String algorithm = PKCSObjectIdentifiers.RC2_CBC.getId();
    AlgorithmParameterGenerator apg;
    KeyGenerator keygen;
    Cipher cipher;
    try {
        Provider provider = SecurityProvider.getProvider();
        apg = AlgorithmParameterGenerator.getInstance(algorithm, provider);
        keygen = KeyGenerator.getInstance(algorithm, provider);
        cipher = Cipher.getInstance(algorithm, provider);
    } catch (NoSuchAlgorithmException e) {
        // happens when using the command line app .jar file
        throw new IOException("Could not find a suitable javax.crypto provider for algorithm " + algorithm + "; possible reason: using an unsigned .jar file", e);
    } catch (NoSuchPaddingException e) {
        // should never happen, if this happens throw IOException instead
        throw new RuntimeException("Could not find a suitable javax.crypto provider", e);
    }
    AlgorithmParameters parameters = apg.generateParameters();
    ASN1Primitive object;
    try (ASN1InputStream input = new ASN1InputStream(parameters.getEncoded("ASN.1"))) {
        object = input.readObject();
    }
    keygen.init(128);
    SecretKey secretkey = keygen.generateKey();
    cipher.init(1, secretkey, parameters);
    byte[] bytes = cipher.doFinal(in);
    KeyTransRecipientInfo recipientInfo = computeRecipientInfo(cert, secretkey.getEncoded());
    DERSet set = new DERSet(new RecipientInfo(recipientInfo));
    AlgorithmIdentifier algorithmId = new AlgorithmIdentifier(new ASN1ObjectIdentifier(algorithm), object);
    EncryptedContentInfo encryptedInfo = new EncryptedContentInfo(PKCSObjectIdentifiers.data, algorithmId, new DEROctetString(bytes));
    EnvelopedData enveloped = new EnvelopedData(null, set, encryptedInfo, (ASN1Set) null);
    ContentInfo contentInfo = new ContentInfo(PKCSObjectIdentifiers.envelopedData, enveloped);
    return contentInfo.toASN1Primitive();
}

Example 4 with EncryptedContentInfo

use of com.github.zhenwei.pkix.util.asn1.cms.EncryptedContentInfo in project OpenPDF by LibrePDF.

the class PdfPublicKeySecurityHandler method createDERForRecipient.

private ASN1Primitive createDERForRecipient(byte[] in, X509Certificate cert) throws IOException, GeneralSecurityException {
    String s = "1.2.840.113549.3.2";
    AlgorithmParameterGenerator algorithmparametergenerator = AlgorithmParameterGenerator.getInstance(s);
    AlgorithmParameters algorithmparameters = algorithmparametergenerator.generateParameters();
    ByteArrayInputStream bytearrayinputstream = new ByteArrayInputStream(algorithmparameters.getEncoded("ASN.1"));
    ASN1InputStream asn1inputstream = new ASN1InputStream(bytearrayinputstream);
    ASN1Primitive derobject = asn1inputstream.readObject();
    KeyGenerator keygenerator = KeyGenerator.getInstance(s);
    keygenerator.init(128);
    SecretKey secretkey = keygenerator.generateKey();
    Cipher cipher = Cipher.getInstance(s);
    cipher.init(1, secretkey, algorithmparameters);
    byte[] abyte1 = cipher.doFinal(in);
    DEROctetString deroctetstring = new DEROctetString(abyte1);
    KeyTransRecipientInfo keytransrecipientinfo = computeRecipientInfo(cert, secretkey.getEncoded());
    DERSet derset = new DERSet(new RecipientInfo(keytransrecipientinfo));
    AlgorithmIdentifier algorithmidentifier = new AlgorithmIdentifier(new ASN1ObjectIdentifier(s), derobject);
    EncryptedContentInfo encryptedcontentinfo = new EncryptedContentInfo(PKCSObjectIdentifiers.data, algorithmidentifier, deroctetstring);
    ASN1Set set = null;
    EnvelopedData env = new EnvelopedData(null, derset, encryptedcontentinfo, set);
    ContentInfo contentinfo = new ContentInfo(PKCSObjectIdentifiers.envelopedData, env);
    // return contentinfo.getDERObject();
    return contentinfo.toASN1Primitive();
// ******************************************************************************
}

Example 5 with EncryptedContentInfo

use of com.github.zhenwei.pkix.util.asn1.cms.EncryptedContentInfo in project LinLong-Java by zhenwei1108.

the class CMSAuthEnvelopedDataGenerator method doGenerate.

private CMSAuthEnvelopedData doGenerate(CMSTypedData content, OutputAEADEncryptor contentEncryptor) throws CMSException {
    ASN1EncodableVector recipientInfos = new ASN1EncodableVector();
    AlgorithmIdentifier encAlgId;
    ASN1OctetString encContent;
    ByteArrayOutputStream bOut = new ByteArrayOutputStream();
    ASN1Set authenticatedAttrSet = null;
    try {
        OutputStream cOut = contentEncryptor.getOutputStream(bOut);
        content.write(cOut);
        if (authAttrsGenerator != null) {
            AttributeTable attrTable = authAttrsGenerator.getAttributes(Collections.EMPTY_MAP);
            authenticatedAttrSet = new DERSet(attrTable.toASN1EncodableVector());
            contentEncryptor.getAADStream().write(authenticatedAttrSet.getEncoded(ASN1Encoding.DER));
        }
        cOut.close();
    } catch (IOException e) {
        throw new CMSException("unable to process authenticated content: " + e.getMessage(), e);
    }
    byte[] encryptedContent = bOut.toByteArray();
    byte[] mac = contentEncryptor.getMAC();
    encAlgId = contentEncryptor.getAlgorithmIdentifier();
    encContent = new BEROctetString(encryptedContent);
    GenericKey encKey = contentEncryptor.getKey();
    for (Iterator it = recipientInfoGenerators.iterator(); it.hasNext(); ) {
        RecipientInfoGenerator recipient = (RecipientInfoGenerator) it.next();
        recipientInfos.add(recipient.generate(encKey));
    }
    EncryptedContentInfo eci = new EncryptedContentInfo(content.getContentType(), encAlgId, encContent);
    ASN1Set unprotectedAttrSet = null;
    if (unauthAttrsGenerator != null) {
        AttributeTable attrTable = unauthAttrsGenerator.getAttributes(Collections.EMPTY_MAP);
        unprotectedAttrSet = new DLSet(attrTable.toASN1EncodableVector());
    }
    ContentInfo contentInfo = new ContentInfo(CMSObjectIdentifiers.authEnvelopedData, new AuthEnvelopedData(originatorInfo, new DERSet(recipientInfos), eci, authenticatedAttrSet, new DEROctetString(mac), unprotectedAttrSet));
    return new CMSAuthEnvelopedData(contentInfo);
}