byte[] decodedCipher = Base64.decode(cipherValue);
byte[] ekSha1 = MessageDigest.getInstance("SHA-1").digest(decodedCipher);
String encEkSha1 = Base64.encode(ekSha1);
context.setExtraneousProperty(MessageConstants.EK_SHA1_VALUE, encEkSha1);
EncryptedKeyHeaderBlock encKeyHB = new EncryptedKeyHeaderBlock(xencEncryptedKey);
String encryptionAlgorithm = encKeyHB.getEncryptionMethodURI();
SecurityPolicy securityPolicy = context.getSecurityPolicy();
if( securityPolicy != null && PolicyTypeUtil.encryptionPolicy(securityPolicy)) {
isBSP = ((EncryptionPolicy)securityPolicy).isBSP();
//featureBinding = (EncryptionPolicy.FeatureBinding )((EncryptionPolicy)securityPolicy).getFeatureBinding();