/** * Utility method to build a new set of credential criteria based on the KeyInfo of an EncryptedData or * EncryptedKey, and any additional static criteria which might have been supplied to the decrypter. * * @param encryptedType an EncryptedData or EncryptedKey for which to resolve decryption credentials * @param staticCriteria static set of credential criteria to add to the new criteria set * @return the new credential criteria set */ private CriteriaSet buildCredentialCriteria(EncryptedType encryptedType, CriteriaSet staticCriteria) { CriteriaSet newCriteriaSet = new CriteriaSet(); // This is the main criteria based on the encrypted type's KeyInfo newCriteriaSet.add(new KeyInfoCriteria(encryptedType.getKeyInfo())); // Also attemtpt to dynamically construct key criteria based on information // in the encrypted object Set<Criteria> keyCriteria = buildKeyCriteria(encryptedType); if (keyCriteria != null && !keyCriteria.isEmpty()) { newCriteriaSet.addAll(keyCriteria); } // Add any static criteria which may have been supplied to the decrypter if (staticCriteria != null && !staticCriteria.isEmpty()) { newCriteriaSet.addAll(staticCriteria); } // If don't have a usage criteria yet from static criteria, add encryption usage if (!newCriteriaSet.contains(UsageCriteria.class)) { newCriteriaSet.add(new UsageCriteria(UsageType.ENCRYPTION)); } return newCriteriaSet; }
/** * Utility method to build a new set of credential criteria based on the KeyInfo of an EncryptedData or * EncryptedKey, and any additional static criteria which might have been supplied to the decrypter. * * @param encryptedType an EncryptedData or EncryptedKey for which to resolve decryption credentials * @param staticCriteria static set of credential criteria to add to the new criteria set * @return the new credential criteria set */ private CriteriaSet buildCredentialCriteria(EncryptedType encryptedType, CriteriaSet staticCriteria) { CriteriaSet newCriteriaSet = new CriteriaSet(); // This is the main criteria based on the encrypted type's KeyInfo newCriteriaSet.add(new KeyInfoCriteria(encryptedType.getKeyInfo())); // Also attemtpt to dynamically construct key criteria based on information // in the encrypted object Set<Criteria> keyCriteria = buildKeyCriteria(encryptedType); if (keyCriteria != null && !keyCriteria.isEmpty()) { newCriteriaSet.addAll(keyCriteria); } // Add any static criteria which may have been supplied to the decrypter if (staticCriteria != null && !staticCriteria.isEmpty()) { newCriteriaSet.addAll(staticCriteria); } // If don't have a usage criteria yet from static criteria, add encryption usage if (!newCriteriaSet.contains(UsageCriteria.class)) { newCriteriaSet.add(new UsageCriteria(UsageType.ENCRYPTION)); } return newCriteriaSet; }