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PKCS#11 wrapper based on sunpkcs11
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// Copyright (c) 2002 Graz University of Technology. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. The end-user documentation included with the redistribution, if any, must
// include the following acknowledgment:
//
// "This product includes software developed by IAIK of Graz University of
// Technology."
//
// Alternately, this acknowledgment may appear in the software itself, if and
// wherever such third-party acknowledgments normally appear.
//
// 4. The names "Graz University of Technology" and "IAIK of Graz University of
// Technology" must not be used to endorse or promote products derived from
// this software without prior written permission.
//
// 5. Products derived from this software may not be called "IAIK PKCS Wrapper",
// nor may "IAIK" appear in their name, without prior written permission of
// Graz University of Technology.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE LICENSOR BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package iaik.pkcs.pkcs11.objects;
import iaik.pkcs.pkcs11.Session;
import iaik.pkcs.pkcs11.TokenException;
import iaik.pkcs.pkcs11.Util;
import iaik.pkcs.pkcs11.wrapper.PKCS11Exception;
/**
* This is the base class for secret (symmetric) keys. Objects of this class
* represent secret keys as specified by PKCS#11 v2.11.
*
* @author Karl Scheibelhofer
* @version 1.0
*/
public class SecretKey extends Key {
/**
* True, if this key is sensitive.
*/
protected BooleanAttribute sensitive;
/**
* True, if this key can be used for encryption.
*/
protected BooleanAttribute encrypt;
/**
* True, if this key can be used for decryption.
*/
protected BooleanAttribute decrypt;
/**
* True, if this key can be used for signing.
*/
protected BooleanAttribute sign;
/**
* True, if this key can be used for verification.
*/
protected BooleanAttribute verify;
/**
* True, if this key can be used for wrapping other keys.
*/
protected BooleanAttribute wrap;
/**
* True, if this key can be used for unwrapping other keys.
*/
protected BooleanAttribute unwrap;
/**
* True, if this key is extractable from the token.
*/
protected BooleanAttribute extractable;
/**
* True, if this key was always sensitive.
*/
protected BooleanAttribute alwaysSensitive;
/**
* True, if this key was never extractable.
*/
protected BooleanAttribute neverExtractable;
/**
* Key checksum of this private key.
*/
protected ByteArrayAttribute checkValue;
/**
* True, if this private key can only be wrapped with a wrapping key
* having set the attribute trusted to true.
*/
protected BooleanAttribute wrapWithTrusted;
/**
* True, if this public key can be used for wrapping other keys.
*/
protected BooleanAttribute trusted;
/**
* Template of the key, that can be wrapped.
*/
protected AttributeArray wrapTemplate;
/**
* Template of the key, that can be unwrapped.
*/
protected AttributeArray unwrapTemplate;
/**
* Default Constructor.
*/
public SecretKey() {
objectClass.setLongValue(ObjectClass.SECRET_KEY);
}
/**
* Called by sub-classes to create an instance of a PKCS#11 secret key.
*
* @param session
* The session to use for reading attributes. This session must
* have the appropriate rights; i.e. it must be a user-session, if
* it is a private object.
* @param objectHandle
* The object handle as given from the PKCS#111 module.
* @exception TokenException
* If getting the attributes failed.
*/
protected SecretKey(Session session, long objectHandle)
throws TokenException {
super(session, objectHandle);
objectClass.setLongValue(ObjectClass.SECRET_KEY);
}
/**
* The getInstance method of the PKCS11Object class uses this method to
* create an instance of a PKCS#11 secret key. This method reads the key
* type attribute and calls the getInstance method of the according
* sub-class.
* If the key type is a vendor defined it uses the
* VendorDefinedKeyBuilder set by the application. If no secret key
* could be constructed, Returns null.
*
* @param session
* The session to use for reading attributes. This session must
* have the appropriate rights; i.e. it must be a user-session, if
* it is a private object.
* @param objectHandle
* The object handle as given from the PKCS#111 module.
* @return The object representing the PKCS#11 object.
* The returned object can be casted to the
* according sub-class.
* @exception TokenException
* If getting the attributes failed.
*/
public static PKCS11Object getInstance(Session session, long objectHandle)
throws TokenException {
Util.requireNonNull("session", session);
KeyTypeAttribute keyTypeAttribute = new KeyTypeAttribute();
getAttributeValue(session, objectHandle, keyTypeAttribute);
Long keyType = keyTypeAttribute.getLongValue();
PKCS11Object newObject;
if (keyTypeAttribute.isPresent() && (keyType != null)) {
newObject = ValuedSecretKey.getInstance(session, objectHandle, keyType);
} else {
newObject = getUnknownSecretKey(session, objectHandle);
}
return newObject;
}
/**
* Try to create a key which has no or an unkown secret key type
* type attribute.
* This implementation will try to use a vendor defined key
* builder, if such has been set.
* If this is impossible or fails, it will create just
* a simple {@link iaik.pkcs.pkcs11.objects.SecretKey SecretKey }.
*
* @param session
* The session to use.
* @param objectHandle
* The handle of the object
* @return A new PKCS11Object.
* @throws TokenException
* If no object could be created.
*/
protected static PKCS11Object getUnknownSecretKey(Session session,
long objectHandle) throws TokenException {
Util.requireNonNull("session", session);
VendorDefinedKeyBuilder vendorKeyBuilder =
session.getModule().getVendorDefinedKeyBuilder();
PKCS11Object newObject;
if (vendorKeyBuilder != null) {
try {
newObject = vendorKeyBuilder.build(session, objectHandle);
} catch (PKCS11Exception ex) {
// we can just treat it like some unknown type of secret key
newObject = new SecretKey(session, objectHandle);
}
} else {
// we can just treat it like some unknown type of secret key
newObject = new SecretKey(session, objectHandle);
}
return newObject;
}
/**
* Put all attributes of the given object into the attributes table of this
* object. This method is only static to be able to access invoke the
* implementation of this method for each class separately.
*
* @param object
* The object to handle.
*/
protected static void putAttributesInTable(SecretKey object) {
Util.requireNonNull("object", object);
object.attributeTable.put(Attribute.SENSITIVE, object.sensitive);
object.attributeTable.put(Attribute.ENCRYPT, object.encrypt);
object.attributeTable.put(Attribute.DECRYPT, object.decrypt);
object.attributeTable.put(Attribute.SIGN, object.sign);
object.attributeTable.put(Attribute.VERIFY, object.verify);
object.attributeTable.put(Attribute.WRAP, object.wrap);
object.attributeTable.put(Attribute.UNWRAP, object.unwrap);
object.attributeTable.put(Attribute.EXTRACTABLE, object.extractable);
object.attributeTable.put(Attribute.ALWAYS_SENSITIVE,
object.alwaysSensitive);
object.attributeTable.put(Attribute.NEVER_EXTRACTABLE,
object.neverExtractable);
object.attributeTable.put(Attribute.CHECK_VALUE, object.checkValue);
object.attributeTable.put(Attribute.WRAP_WITH_TRUSTED,
object.wrapWithTrusted);
object.attributeTable.put(Attribute.TRUSTED, object.trusted);
object.attributeTable.put(Attribute.WRAP_TEMPLATE,
object.wrapTemplate);
object.attributeTable.put(Attribute.UNWRAP_TEMPLATE,
object.unwrapTemplate);
}
/**
* Allocates the attribute objects for this class and adds them to the
* attribute table.
*/
@Override
protected void allocateAttributes() {
super.allocateAttributes();
sensitive = new BooleanAttribute(Attribute.SENSITIVE);
encrypt = new BooleanAttribute(Attribute.ENCRYPT);
decrypt = new BooleanAttribute(Attribute.DECRYPT);
sign = new BooleanAttribute(Attribute.SIGN);
verify = new BooleanAttribute(Attribute.VERIFY);
wrap = new BooleanAttribute(Attribute.WRAP);
unwrap = new BooleanAttribute(Attribute.UNWRAP);
extractable = new BooleanAttribute(Attribute.EXTRACTABLE);
alwaysSensitive = new BooleanAttribute(Attribute.ALWAYS_SENSITIVE);
neverExtractable = new BooleanAttribute(Attribute.NEVER_EXTRACTABLE);
checkValue = new ByteArrayAttribute(Attribute.CHECK_VALUE);
wrapWithTrusted = new BooleanAttribute(Attribute.WRAP_WITH_TRUSTED);
trusted = new BooleanAttribute(Attribute.TRUSTED);
wrapTemplate = new AttributeArray(Attribute.WRAP_TEMPLATE);
unwrapTemplate = new AttributeArray(Attribute.UNWRAP_TEMPLATE);
putAttributesInTable(this);
}
/**
* Compares all member variables of this object with the other object.
* Returns only true, if all are equal in both objects.
*
* @param otherObject
* The other object to compare to.
* @return True, if other is an instance of this class and all member
* variables of both objects are equal. False, otherwise.
*/
@Override
public boolean equals(Object otherObject) {
if (this == otherObject) {
return true;
} else if (!(otherObject instanceof SecretKey)) {
return false;
}
SecretKey other = (SecretKey) otherObject;
return super.equals(other)
&& this.sensitive.equals(other.sensitive)
&& this.encrypt.equals(other.encrypt)
&& this.decrypt.equals(other.decrypt)
&& this.sign.equals(other.sign)
&& this.verify.equals(other.verify)
&& this.wrap.equals(other.wrap)
&& this.unwrap.equals(other.unwrap)
&& this.extractable.equals(other.extractable)
&& this.alwaysSensitive.equals(other.alwaysSensitive)
&& this.neverExtractable.equals(other.neverExtractable)
&& this.checkValue.equals(other.checkValue)
&& this.wrapWithTrusted.equals(other.wrapWithTrusted)
&& this.trusted.equals(other.trusted)
&& this.wrapTemplate.equals(other.wrapTemplate)
&& this.unwrapTemplate.equals(other.unwrapTemplate);
}
/**
* Gets the sensitive attribute of this key.
*
* @return The sensitive attribute.
*/
public BooleanAttribute getSensitive() {
return sensitive;
}
/**
* Gets the encrypt attribute of this key.
*
* @return The encrypt attribute.
*/
public BooleanAttribute getEncrypt() {
return encrypt;
}
/**
* Gets the verify attribute of this key.
*
* @return The verify attribute.
*/
public BooleanAttribute getVerify() {
return verify;
}
/**
* Gets the decrypt attribute of this key.
*
* @return The decrypt attribute.
*/
public BooleanAttribute getDecrypt() {
return decrypt;
}
/**
* Gets the sign attribute of this key.
*
* @return The sign attribute.
*/
public BooleanAttribute getSign() {
return sign;
}
/**
* Gets the wrap attribute of this key.
*
* @return The wrap attribute.
*/
public BooleanAttribute getWrap() {
return wrap;
}
/**
* Gets the unwrap attribute of this key.
*
* @return The unwrap attribute.
*/
public BooleanAttribute getUnwrap() {
return unwrap;
}
/**
* Gets the extractable attribute of this key.
*
* @return The extractable attribute.
*/
public BooleanAttribute getExtractable() {
return extractable;
}
/**
* Gets the always sensitive attribute of this key.
*
* @return The always sensitive attribute.
*/
public BooleanAttribute getAlwaysSensitive() {
return alwaysSensitive;
}
/**
* Gets the never extractable attribute of this key.
*
* @return The never extractable attribute.
*/
public BooleanAttribute getNeverExtractable() {
return neverExtractable;
}
/**
* Gets the check value attribute of this key.
*
* @return The check value attribute.
*/
public ByteArrayAttribute getCheckValue() {
return checkValue;
}
/**
* Gets the wrap with trusted attribute of this key.
*
* @return The wrap with trusted attribute.
*/
public BooleanAttribute getWrapWithTrusted() {
return wrapWithTrusted;
}
/**
* Gets the trusted attribute of this key.
*
* @return The trusted attribute.
*/
public BooleanAttribute getTrusted() {
return trusted;
}
/**
* Gets the wrap template attribute of this key. This
* attribute can only be used with PKCS#11 modules supporting
* cryptoki version 2.20 or higher.
*
* @return The wrap template attribute.
*/
public AttributeArray getWrapTemplate() {
return wrapTemplate;
}
/**
* Gets the unwrap template attribute of this key. This
* attribute can only be used with PKCS#11 modules supporting
* cryptoki version 2.20 or higher.
*
* @return The unwrap template attribute.
*/
public AttributeArray getUnwrapTemplate() {
return unwrapTemplate;
}
/**
* Read the values of the attributes of this object from the token.
*
* @param session
* The session to use for reading attributes. This session must
* have the appropriate rights; i.e. it must be a user-session, if
* it is a private object.
* @exception TokenException
* If getting the attributes failed.
*/
@Override
public void readAttributes(Session session) throws TokenException {
super.readAttributes(session);
PKCS11Object.getAttributeValues(session, objectHandle, new Attribute[] {
sensitive, encrypt, decrypt, sign, verify, wrap, unwrap,
extractable, alwaysSensitive, neverExtractable, checkValue,
wrapWithTrusted, trusted, wrapTemplate, unwrapTemplate });
}
/**
* Returns a string representation of the current object. The
* output is only for debugging purposes and should not be used for other
* purposes.
*
* @return A string presentation of this object for debugging output.
*/
@Override
public String toString() {
String superToString = super.toString();
return Util.concatObjectsCap(superToString.length() + 200, superToString,
"\n Sensitive: ", sensitive,
"\n Encrypt: ", encrypt,
"\n Decrypt: ", decrypt,
"\n Sign: ", sign,
"\n Verify: ", verify,
"\n Wrap: ", wrap,
"\n Unwrap: ", unwrap,
"\n Extractable: ", extractable,
"\n Always Sensitive: ", alwaysSensitive,
"\n Never Extractable: ", neverExtractable,
"\n Check Value: ", checkValue,
"\n Wrap With Trusted: ", wrapWithTrusted,
"\n Trusted: ", trusted,
"\n Wrap Template: ", wrapTemplate,
"\n Unwrap Template: ", unwrapTemplate);
}
}