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

Example 6 with KeyTransRecipientInfo

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

the class PdfPublicKeySecurityHandler method computeRecipientInfo.

private KeyTransRecipientInfo computeRecipientInfo(X509Certificate x509certificate, byte[] abyte0) throws GeneralSecurityException, IOException {
    ASN1InputStream asn1inputstream = new ASN1InputStream(new ByteArrayInputStream(x509certificate.getTBSCertificate()));
    TBSCertificate tbsCertificate = TBSCertificate.getInstance(asn1inputstream.readObject());
    AlgorithmIdentifier algorithmidentifier = tbsCertificate.getSubjectPublicKeyInfo().getAlgorithm();
    IssuerAndSerialNumber issuerandserialnumber = new IssuerAndSerialNumber(tbsCertificate.getIssuer(), tbsCertificate.getSerialNumber().getValue());
    Cipher cipher = Cipher.getInstance(algorithmidentifier.getAlgorithm().getId());
    cipher.init(1, x509certificate);
    DEROctetString deroctetstring = new DEROctetString(cipher.doFinal(abyte0));
    RecipientIdentifier recipId = new RecipientIdentifier(issuerandserialnumber);
    return new KeyTransRecipientInfo(recipId, algorithmidentifier, deroctetstring);
}

Example 7 with KeyTransRecipientInfo

use of com.github.zhenwei.pkix.util.asn1.cms.KeyTransRecipientInfo 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 8 with KeyTransRecipientInfo

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

the class KeyTransRecipientInfoGenerator method generate.

public final RecipientInfo generate(GenericKey contentEncryptionKey) throws CMSException {
    byte[] encryptedKeyBytes;
    try {
        encryptedKeyBytes = wrapper.generateWrappedKey(contentEncryptionKey);
    } catch (OperatorException e) {
        throw new CMSException("exception wrapping content key: " + e.getMessage(), e);
    }
    RecipientIdentifier recipId;
    if (issuerAndSerial != null) {
        recipId = new RecipientIdentifier(issuerAndSerial);
    } else {
        recipId = new RecipientIdentifier(new DEROctetString(subjectKeyIdentifier));
    }
    return new RecipientInfo(new KeyTransRecipientInfo(recipId, wrapper.getAlgorithmIdentifier(), new DEROctetString(encryptedKeyBytes)));
}

Example 9 with KeyTransRecipientInfo

use of com.github.zhenwei.pkix.util.asn1.cms.KeyTransRecipientInfo 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();
}

Example 10 with KeyTransRecipientInfo

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

the class PdfPublicKeySecurityHandler method computeRecipientInfo.

private KeyTransRecipientInfo computeRecipientInfo(X509Certificate x509certificate, byte[] abyte0) throws GeneralSecurityException, IOException {
    ASN1InputStream asn1inputstream = new ASN1InputStream(new ByteArrayInputStream(x509certificate.getTBSCertificate()));
    TBSCertificateStructure tbscertificatestructure = TBSCertificateStructure.getInstance(asn1inputstream.readObject());
    AlgorithmIdentifier algorithmidentifier = tbscertificatestructure.getSubjectPublicKeyInfo().getAlgorithm();
    IssuerAndSerialNumber issuerandserialnumber = new IssuerAndSerialNumber(tbscertificatestructure.getIssuer(), tbscertificatestructure.getSerialNumber().getValue());
    Cipher cipher = Cipher.getInstance(algorithmidentifier.getAlgorithm().getId());
    cipher.init(1, x509certificate);
    DEROctetString deroctetstring = new DEROctetString(cipher.doFinal(abyte0));
    RecipientIdentifier recipId = new RecipientIdentifier(issuerandserialnumber);
    return new KeyTransRecipientInfo(recipId, algorithmidentifier, deroctetstring);
}