protected final ContentCryptoMaterial createContentCryptoMaterial(
AmazonWebServiceRequest req) {
if (req instanceof EncryptionMaterialsFactory) {
// per request level encryption materials
EncryptionMaterialsFactory f = (EncryptionMaterialsFactory)req;
final EncryptionMaterials materials = f.getEncryptionMaterials();
if (materials != null) {
buildContentCryptoMaterial(materials,
cryptoConfig.getCryptoProvider());
}
}