Examples with EncryptedContentInfo org.bouncycastle.asn1.cms.EncryptedContentInfo used on opensource projects

Example 1 with EncryptedContentInfo

use of org.bouncycastle.asn1.cms.EncryptedContentInfo in project jruby-openssl by jruby.

the class EncContent method fromASN1.

/**
 * EncryptedContentInfo ::= SEQUENCE {
 *   contentType ContentType,
 *   contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier,
 *   encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL }
 *
 * EncryptedContent ::= OCTET STRING
 */
public static EncContent fromASN1(final ASN1Encodable content) {
    final ASN1Sequence sequence = (ASN1Sequence) content;
    ASN1ObjectIdentifier contentType = (ASN1ObjectIdentifier) (sequence.getObjectAt(0));
    final EncContent ec = new EncContent();
    ec.setContentType(ASN1Registry.oid2nid(contentType));
    ec.setAlgorithm(AlgorithmIdentifier.getInstance(sequence.getObjectAt(1)));
    if (sequence.size() > 2 && sequence.getObjectAt(2) instanceof ASN1TaggedObject && ((ASN1TaggedObject) (sequence.getObjectAt(2))).getTagNo() == 0) {
        ASN1Encodable ee = ((ASN1TaggedObject) (sequence.getObjectAt(2))).getObject();
        if (ee instanceof ASN1Sequence && ((ASN1Sequence) ee).size() > 0) {
            ByteList combinedOctets = new ByteList();
            Enumeration enm = ((ASN1Sequence) ee).getObjects();
            while (enm.hasMoreElements()) {
                byte[] octets = ((ASN1OctetString) enm.nextElement()).getOctets();
                combinedOctets.append(octets);
            }
            ec.setEncData(new DEROctetString(combinedOctets.bytes()));
        } else {
            ec.setEncData((ASN1OctetString) ee);
        }
    }
    return ec;
}

Example 2 with EncryptedContentInfo

use of org.bouncycastle.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 = "1.2.840.113549.3.2";
    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();
    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 3 with EncryptedContentInfo

use of org.bouncycastle.asn1.cms.EncryptedContentInfo in project jruby-openssl by jruby.

the class Envelope method fromASN1.

/**
 * EnvelopedData ::= SEQUENCE {
 *   version Version,
 *   recipientInfos RecipientInfos,
 *   encryptedContentInfo EncryptedContentInfo }
 *
 * Version ::= INTEGER
 *
 * RecipientInfos ::= SET OF RecipientInfo
 */
public static Envelope fromASN1(ASN1Encodable content) {
    ASN1Sequence sequence = (ASN1Sequence) content;
    ASN1Integer version = (ASN1Integer) sequence.getObjectAt(0);
    ASN1Set recipients = (ASN1Set) sequence.getObjectAt(1);
    ASN1Encodable encContent = sequence.getObjectAt(2);
    Envelope envelope = new Envelope();
    envelope.setVersion(version.getValue().intValue());
    envelope.setRecipientInfo(recipientInfosFromASN1Set(recipients));
    envelope.setEncData(EncContent.fromASN1(encContent));
    return envelope;
}