/**
* Decrypts an entity with the provided certificate's private key.
*
* @param encryptedEntity The entity that will be decrypted.
* @param decryptingCertificate The certificate whose private key will be used to decrypt the
* message.
* @return A MimeEntity containing the decrypted part.
*/
public MimeEntity decrypt(MimeEntity encryptedEntity, X509CertificateEx decryptingCertificate) {
if (encryptedEntity == null || decryptingCertificate == null) {
throw new IllegalArgumentException();
}
if (!decryptingCertificate.hasPrivateKey()) {
throw new IllegalArgumentException("Certificate has no private key");
}
encryptedEntity.verifyContentType(SMIMEStandard.EncryptedContentTypeHeaderValue);
encryptedEntity.verifyTransferEncoding(MimeStandard.TransferEncodingBase64);
Collection<X509CertificateEx> certs = new ArrayList<X509CertificateEx>();
certs.add(decryptingCertificate);
MimeEntity retVal = this.decrypt(encryptedEntity, certs);
//
// And turn the decrypted bytes back into an entity
//
return retVal;
}
