AlgorithmParameters createAlgorithmParameters(ASN1ObjectIdentifier algorithm)
throws NoSuchAlgorithmException, NoSuchProviderException {
String algorithmName = (String) BASE_CIPHER_NAMES.get(algorithm);
if (algorithmName != null) {
try {
// this is reversed as the Sun policy files now allow unlimited strength RSA
return helper.createAlgorithmParameters(algorithmName);
} catch (NoSuchAlgorithmException e) {
// Ignore
}
}
return helper.createAlgorithmParameters(algorithm.getId());
}
public KeyFactory createKeyFactory(ASN1ObjectIdentifier algorithm) throws CMSException {
try {
String cipherName = (String) BASE_CIPHER_NAMES.get(algorithm);
if (cipherName != null) {
try {
// this is reversed as the Sun policy files now allow unlimited strength RSA
return helper.createKeyFactory(cipherName);
} catch (NoSuchAlgorithmException e) {
// Ignore
}
}
return helper.createKeyFactory(algorithm.getId());
} catch (GeneralSecurityException e) {
throw new CMSException("cannot create key factory: " + e.getMessage(), e);
}
}
Mac createMac(ASN1ObjectIdentifier algorithm) throws CMSException {
try {
String macName = (String) MAC_ALG_NAMES.get(algorithm);
if (macName != null) {
try {
// this is reversed as the Sun policy files now allow unlimited strength RSA
return helper.createMac(macName);
} catch (NoSuchAlgorithmException e) {
// Ignore
}
}
return helper.createMac(algorithm.getId());
} catch (GeneralSecurityException e) {
throw new CMSException("cannot create mac: " + e.getMessage(), e);
}
}
Cipher createRFC3211Wrapper(ASN1ObjectIdentifier algorithm) throws CMSException {
String cipherName = (String) BASE_CIPHER_NAMES.get(algorithm);
if (cipherName == null) {
throw new CMSException("no name for " + algorithm);
}
cipherName += "RFC3211Wrap";
try {
return helper.createCipher(cipherName);
} catch (GeneralSecurityException e) {
throw new CMSException("cannot create cipher: " + e.getMessage(), e);
}
}
public SymmetricKeyUnwrapper createSymmetricUnwrapper(
AlgorithmIdentifier keyEncryptionAlgorithm, SecretKey keyEncryptionKey) {
return helper.createSymmetricUnwrapper(keyEncryptionAlgorithm, keyEncryptionKey);
}
public JceAsymmetricKeyUnwrapper createAsymmetricUnwrapper(
AlgorithmIdentifier keyEncryptionAlgorithm, PrivateKey keyEncryptionKey) {
return helper.createAsymmetricUnwrapper(keyEncryptionAlgorithm, keyEncryptionKey);
}