jdk/src/share/classes/sun/security/internal/spec/TlsRsaPremasterSecretParameterSpec.java
8023069: Enhance TLS connections
Summary: Also reviewed by Alexander Fomin and Andrew Gross
Reviewed-by: wetmore
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*
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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package sun.security.internal.spec;
import java.security.spec.AlgorithmParameterSpec;
/**
* Parameters for SSL/TLS RSA Premaster secret generation.
* This class is used by SSL/TLS client to initialize KeyGenerators of the
* type "TlsRsaPremasterSecret".
*
* <p>Instances of this class are immutable.
*
* @since 1.6
* @author Andreas Sterbenz
* @deprecated Sun JDK internal use only --- WILL BE REMOVED in a future
* release.
*/
@Deprecated
public class TlsRsaPremasterSecretParameterSpec
implements AlgorithmParameterSpec {
private final int majorVersion;
private final int minorVersion;
private final byte[] encodedSecret;
/**
* Constructs a new TlsRsaPremasterSecretParameterSpec.
* <P>
* The version numbers will be placed inside the premaster secret to
* detect version rollbacks attacks as described in the TLS specification.
* Note that they do not indicate the protocol version negotiated for
* the handshake.
*
* @param majorVersion the major number of the protocol version
* @param minorVersion the minor number of the protocol version
*
* @throws IllegalArgumentException if minorVersion or majorVersion are
* negative or larger than 255
*/
public TlsRsaPremasterSecretParameterSpec(int majorVersion,
int minorVersion) {
this.majorVersion =
TlsMasterSecretParameterSpec.checkVersion(majorVersion);
this.minorVersion =
TlsMasterSecretParameterSpec.checkVersion(minorVersion);
this.encodedSecret = null;
}
/**
* Constructs a new TlsRsaPremasterSecretParameterSpec.
* <P>
* The version numbers will be placed inside the premaster secret to
* detect version rollbacks attacks as described in the TLS specification.
* Note that they do not indicate the protocol version negotiated for
* the handshake.
* <P>
* Usually, the encoded secret key is a random number that acts as
* dummy pre_master_secret to avoid vulnerabilities described by
* section 7.4.7.1, RFC 5246.
*
* @param majorVersion the major number of the protocol version
* @param minorVersion the minor number of the protocol version
* @param encodedSecret the encoded secret key
*
* @throws IllegalArgumentException if minorVersion or majorVersion are
* negative or larger than 255, or encodedSecret is not exactly 48 bytes.
*/
public TlsRsaPremasterSecretParameterSpec(int majorVersion,
int minorVersion, byte[] encodedSecret) {
this.majorVersion =
TlsMasterSecretParameterSpec.checkVersion(majorVersion);
this.minorVersion =
TlsMasterSecretParameterSpec.checkVersion(minorVersion);
if (encodedSecret == null || encodedSecret.length != 48) {
throw new IllegalArgumentException(
"Encoded secret is not exactly 48 bytes");
}
this.encodedSecret = encodedSecret.clone();
}
/**
* Returns the major version.
*
* @return the major version.
*/
public int getMajorVersion() {
return majorVersion;
}
/**
* Returns the minor version.
*
* @return the minor version.
*/
public int getMinorVersion() {
return minorVersion;
}
/**
* Returns the encoded secret.
*
* @return the encoded secret, may be null if no encoded secret.
*/
public byte[] getEncodedSecret() {
return encodedSecret == null ? null : encodedSecret.clone();
}
}