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

Example 6 with EncryptedContentInfo

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

the class CMSEncryptedDataGenerator method doGenerate.

private CMSEncryptedData doGenerate(CMSTypedData content, OutputEncryptor contentEncryptor) throws CMSException {
    AlgorithmIdentifier encAlgId;
    ASN1OctetString encContent;
    ByteArrayOutputStream bOut = new ByteArrayOutputStream();
    try {
        OutputStream cOut = contentEncryptor.getOutputStream(bOut);
        content.write(cOut);
        cOut.close();
    } catch (IOException e) {
        throw new CMSException("");
    }
    byte[] encryptedContent = bOut.toByteArray();
    encAlgId = contentEncryptor.getAlgorithmIdentifier();
    encContent = new BEROctetString(encryptedContent);
    EncryptedContentInfo eci = new EncryptedContentInfo(content.getContentType(), encAlgId, encContent);
    ASN1Set unprotectedAttrSet = null;
    if (unprotectedAttributeGenerator != null) {
        AttributeTable attrTable = unprotectedAttributeGenerator.getAttributes(Collections.EMPTY_MAP);
        unprotectedAttrSet = new BERSet(attrTable.toASN1EncodableVector());
    }
    ContentInfo contentInfo = new ContentInfo(CMSObjectIdentifiers.encryptedData, new EncryptedData(eci, unprotectedAttrSet));
    return new CMSEncryptedData(contentInfo);
}

Example 7 with EncryptedContentInfo

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

the class CMSEnvelopedDataGenerator method doGenerate.

private CMSEnvelopedData doGenerate(CMSTypedData content, OutputEncryptor contentEncryptor) throws CMSException {
    ASN1EncodableVector recipientInfos = new ASN1EncodableVector();
    AlgorithmIdentifier encAlgId;
    ASN1OctetString encContent;
    ByteArrayOutputStream bOut = new ByteArrayOutputStream();
    try {
        OutputStream cOut = contentEncryptor.getOutputStream(bOut);
        content.write(cOut);
        cOut.close();
        if (contentEncryptor instanceof OutputAEADEncryptor) {
            byte[] mac = ((OutputAEADEncryptor) contentEncryptor).getMAC();
            bOut.write(mac, 0, mac.length);
        }
    } catch (IOException e) {
        throw new CMSException("");
    }
    byte[] encryptedContent = bOut.toByteArray();
    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 (unprotectedAttributeGenerator != null) {
        AttributeTable attrTable = unprotectedAttributeGenerator.getAttributes(Collections.EMPTY_MAP);
        unprotectedAttrSet = new BERSet(attrTable.toASN1EncodableVector());
    }
    ContentInfo contentInfo = new ContentInfo(CMSObjectIdentifiers.envelopedData, new EnvelopedData(originatorInfo, new DERSet(recipientInfos), eci, unprotectedAttrSet));
    return new CMSEnvelopedData(contentInfo);
}

Example 8 with EncryptedContentInfo

use of com.github.zhenwei.pkix.util.asn1.cms.EncryptedContentInfo in project itext2 by albfernandez.

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);
    EnvelopedData env = new EnvelopedData(null, derset, encryptedcontentinfo, (org.bouncycastle.asn1.ASN1Set) null);
    ContentInfo contentinfo = new ContentInfo(PKCSObjectIdentifiers.envelopedData, env);
    return contentinfo.toASN1Primitive();
}