java.security.spec
Interfaces 
AlgorithmParameterSpec
KeySpec
Classes 
DSAParameterSpec
DSAPrivateKeySpec
DSAPublicKeySpec
EncodedKeySpec
PKCS8EncodedKeySpec
PSSParameterSpec
RSAKeyGenParameterSpec
RSAMultiPrimePrivateCrtKeySpec
RSAOtherPrimeInfo
RSAPrivateCrtKeySpec
RSAPrivateKeySpec
RSAPublicKeySpec
X509EncodedKeySpec
Exceptions 
InvalidKeySpecException
InvalidParameterSpecException