Example usage for org.bouncycastle.cms RecipientInformationStore getRecipients

Introduction

In this page you can find the example usage for org.bouncycastle.cms RecipientInformationStore getRecipients.

Prototype

public Collection<RecipientInformation> getRecipients(RecipientId selector) 

Source Link

Document

Return possible empty collection with recipients matching the passed in RecipientId

Usage

From source file:be.e_contract.mycarenet.etee.Unsealer.java

License:Open Source License

@SuppressWarnings("unchecked")
private byte[] decrypt(byte[] encryptedData) throws CMSException, IOException {
    CMSEnvelopedDataParser cmsEnvelopedDataParser = new CMSEnvelopedDataParser(encryptedData);
    LOG.debug("content encryption algo: "
            + cmsEnvelopedDataParser.getContentEncryptionAlgorithm().getAlgorithm().getId());

    RecipientInformationStore recipientInformationStore = cmsEnvelopedDataParser.getRecipientInfos();
    RecipientId recipientId = new JceKeyTransRecipientId(this.decryptionCertificate);
    Collection<RecipientInformation> recipients = recipientInformationStore.getRecipients(recipientId);
    LOG.debug("number of recipients for given decryption cert: " + recipients.size());
    if (0 == recipients.size()) {
        recipients = recipientInformationStore.getRecipients();
        LOG.debug("number of all recipients: " + recipients.size());
        Iterator<RecipientInformation> recipientsIterator = recipients.iterator();
        while (recipientsIterator.hasNext()) {
            RecipientInformation recipientInformation = recipientsIterator.next();
            RecipientId actualRecipientId = recipientInformation.getRID();
            LOG.debug("actual recipient id type: " + actualRecipientId.getClass().getName());
            if (actualRecipientId instanceof KeyTransRecipientId) {
                KeyTransRecipientId actualKeyTransRecipientId = (KeyTransRecipientId) actualRecipientId;
                LOG.debug("actual recipient issuer: " + actualKeyTransRecipientId.getIssuer());
                LOG.debug("actual recipient serial number: " + actualKeyTransRecipientId.getSerialNumber());
            }// w  ww .j a  va2 s . c om
        }
        throw new SecurityException("message does not seem to be addressed to you");
    }
    Iterator<RecipientInformation> recipientsIterator = recipients.iterator();
    RecipientInformation recipientInformation = recipientsIterator.next();

    AsymmetricKeyParameter privKeyParams = PrivateKeyFactory.createKey(this.decryptionPrivateKey.getEncoded());
    BcRSAKeyTransEnvelopedRecipient recipient = new BcRSAKeyTransEnvelopedRecipient(privKeyParams);
    byte[] decryptedContent = recipientInformation.getContent(recipient);
    return decryptedContent;
}

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