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package sun.security.pkcs11;
import java.security.*;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.*;
import javax.crypto.spec.*;
import sun.security.internal.spec.TlsRsaPremasterSecretParameterSpec;
import static sun.security.pkcs11.TemplateManager.*;
import sun.security.pkcs11.wrapper.*;
import static sun.security.pkcs11.wrapper.PKCS11Constants.*;
/**
* KeyGenerator for the SSL/TLS RSA premaster secret.
*
* @author Andreas Sterbenz
* @since 1.6
*/
final class P11TlsRsaPremasterSecretGenerator extends KeyGeneratorSpi {
private final static String MSG = "TlsRsaPremasterSecretGenerator must be "
+ "initialized using a TlsRsaPremasterSecretParameterSpec";
// token instance
private final Token token;
// algorithm name
private final String algorithm;
// mechanism id
private long mechanism;
@SuppressWarnings("deprecation")
private TlsRsaPremasterSecretParameterSpec spec;
// whether SSLv3 is supported
private final boolean supportSSLv3;
P11TlsRsaPremasterSecretGenerator(Token token, String algorithm, long mechanism)
throws PKCS11Exception {
super();
this.token = token;
this.algorithm = algorithm;
this.mechanism = mechanism;
// Given the current lookup order specified in SunPKCS11.java,
// if CKM_SSL3_PRE_MASTER_KEY_GEN is not used to construct this object,
// it means that this mech is disabled or unsupported.
this.supportSSLv3 = (mechanism == CKM_SSL3_PRE_MASTER_KEY_GEN);
}
protected void engineInit(SecureRandom random) {
throw new InvalidParameterException(MSG);
}
@SuppressWarnings("deprecation")
protected void engineInit(AlgorithmParameterSpec params,
SecureRandom random) throws InvalidAlgorithmParameterException {
if (!(params instanceof TlsRsaPremasterSecretParameterSpec)) {
throw new InvalidAlgorithmParameterException(MSG);
}
TlsRsaPremasterSecretParameterSpec spec =
(TlsRsaPremasterSecretParameterSpec) params;
int tlsVersion = (spec.getMajorVersion() << 8) | spec.getMinorVersion();
if ((tlsVersion == 0x0300 && !supportSSLv3) ||
(tlsVersion < 0x0300) || (tlsVersion > 0x0303)) {
throw new InvalidAlgorithmParameterException
("Only" + (supportSSLv3? " SSL 3.0,": "") +
" TLS 1.0, TLS 1.1 and TLS 1.2 are supported (" +
tlsVersion + ")");
}
this.spec = spec;
}
protected void engineInit(int keysize, SecureRandom random) {
throw new InvalidParameterException(MSG);
}
// Only can be used in client side to generate TLS RSA premaster secret.
protected SecretKey engineGenerateKey() {
if (spec == null) {
throw new IllegalStateException
("TlsRsaPremasterSecretGenerator must be initialized");
}
CK_VERSION version = new CK_VERSION(
spec.getMajorVersion(), spec.getMinorVersion());
Session session = null;
try {
session = token.getObjSession();
CK_ATTRIBUTE[] attributes = token.getAttributes(
O_GENERATE, CKO_SECRET_KEY,
CKK_GENERIC_SECRET, new CK_ATTRIBUTE[0]);
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