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The Apache WSS4J project provides a Java implementation of the primary security standards
for Web Services, namely the OASIS Web Services Security (WS-Security) specifications
from the OASIS Web Services Security TC.
/*
* Copyright 2003-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.ws.security.message;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ws.security.SOAPConstants;
import org.apache.ws.security.WSConstants;
import org.apache.ws.security.WSDocInfo;
import org.apache.ws.security.WSDocInfoStore;
import org.apache.ws.security.WSEncryptionPart;
import org.apache.ws.security.WSSecurityException;
import org.apache.ws.security.components.crypto.Crypto;
import org.apache.ws.security.message.token.BinarySecurity;
import org.apache.ws.security.message.token.PKIPathSecurity;
import org.apache.ws.security.message.token.Reference;
import org.apache.ws.security.message.token.SecurityTokenReference;
import org.apache.ws.security.message.token.X509Security;
import org.apache.ws.security.saml.SAMLUtil;
import org.apache.ws.security.transform.STRTransform;
import org.apache.ws.security.util.WSSecurityUtil;
import org.apache.xml.security.algorithms.SignatureAlgorithm;
import org.apache.xml.security.c14n.Canonicalizer;
import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.keys.KeyInfo;
import org.apache.xml.security.keys.content.X509Data;
import org.apache.xml.security.keys.content.x509.XMLX509IssuerSerial;
import org.apache.xml.security.signature.XMLSignature;
import org.apache.xml.security.signature.XMLSignatureException;
import org.apache.xml.security.transforms.TransformationException;
import org.apache.xml.security.transforms.Transforms;
import org.apache.xml.security.transforms.params.InclusiveNamespaces;
import org.apache.xml.security.utils.Constants;
import org.apache.xml.security.utils.XMLUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import java.security.cert.X509Certificate;
import java.util.HashSet;
import java.util.Set;
import java.util.Vector;
/**
* Creates a Signature according to WS Specification, X509 profile.
*
* This class is a re-factored implementation of the previous WSS4J class
* WSSignEnvlope. This new class allows better control of
* the process to create a Signature and to add it to the Security header.
*
*
*
* The flexibility and fine granular control is required to implement a handler
* that uses WSSecurityPolicy files to control the setup of a Security header.
*
* @author Davanum Srinivas ([email protected])
* @author Werner Dittmann ([email protected])
*/
public class WSSecSignature extends WSSecBase {
private static Log log = LogFactory.getLog(WSSecSignature.class.getName());
protected boolean useSingleCert = true;
protected String sigAlgo = null;
protected String canonAlgo = Canonicalizer.ALGO_ID_C14N_EXCL_OMIT_COMMENTS;
protected WSSecUsernameToken usernameToken = null;
protected byte[] signatureValue = null;
/*
* The following private variable are setup during prepare().
*/
protected Document document = null;
private Crypto crypto = null;
protected WSDocInfo wsDocInfo = null;
protected String certUri = null;
protected XMLSignature sig = null;
protected KeyInfo keyInfo = null;
protected String keyInfoUri = null;
protected SecurityTokenReference secRef = null;
protected String strUri = null;
private byte[] secretKey = null;
private String encrKeySha1value = null;
protected BinarySecurity bstToken = null;
private String customTokenValueType;
private String customTokenId;
/**
* Constructor.
*/
public WSSecSignature() {
}
/**
* set the single cert flag.
*
* @param useSingleCert
*/
public void setUseSingleCertificate(boolean useSingleCert) {
this.useSingleCert = useSingleCert;
}
/**
* Get the single cert flag.
*
* @return A boolean if single certificate is set.
*/
public boolean isUseSingleCertificate() {
return this.useSingleCert;
}
/**
* Set the name of the signature encryption algorithm to use.
*
* If the algorithm is not set then an automatic detection of the signature
* algorithm to use is performed during the prepare()
* method. Refer to WSConstants which algorithms are supported.
*
* @param algo
* Is the name of the signature algorithm
* @see WSConstants#RSA
* @see WSConstants#DSA
*/
public void setSignatureAlgorithm(String algo) {
sigAlgo = algo;
}
/**
* Get the name of the signature algorithm that is being used.
*
* Call this method after prepare to get the information
* which signature algorithm was automatically detected if no signature
* algorithm was preset.
*
* @return the identifier URI of the signature algorithm
*/
public String getSignatureAlgorithm() {
return sigAlgo;
}
/**
* Set the canonicalization method to use.
*
* If the canonicalization method is not set then the recommended Exclusive
* XML Canonicalization is used by default Refer to WSConstants which
* algorithms are supported.
*
* @param algo
* Is the name of the signature algorithm
* @see WSConstants#C14N_OMIT_COMMENTS
* @see WSConstants#C14N_WITH_COMMENTS
* @see WSConstants#C14N_EXCL_OMIT_COMMENTS
* @see WSConstants#C14N_EXCL_WITH_COMMENTS
*/
public void setSigCanonicalization(String algo) {
canonAlgo = algo;
}
/**
* Get the canonicalization method.
*
* If the canonicalization method was not set then Exclusive XML
* Canonicalization is used by default.
*
* @return The string describing the canonicalization algorithm.
*/
public String getSigCanonicalization() {
return canonAlgo;
}
/**
* @param usernameToken
* The usernameToken to set.
*/
public void setUsernameToken(WSSecUsernameToken usernameToken) {
this.usernameToken = usernameToken;
}
/**
* Returns the computed Signature value.
*
* Call this method after computeSignature() or build()
* methods were called.
*
* @return Returns the signatureValue.
*/
public byte[] getSignatureValue() {
return signatureValue;
}
/**
* Get the id generated during prepare().
*
* Returns the the value of wsu:Id attribute of the Signature element.
*
* @return Return the wsu:Id of this token or null if prepare()
* was not called before.
*/
public String getId() {
if (sig == null) {
return null;
}
return sig.getId();
}
/**
* Get the id of the BSt generated during prepare().
*
* @return Returns the the value of wsu:Id attribute of the
* BinaruSecurityToken element.
*/
public String getBSTTokenId() {
if(this.bstToken == null) {
return null;
}
return this.bstToken.getID();
}
/**
* Initialize a WSSec Signature.
*
* The method sets up and initializes a WSSec Signature structure after the
* relevant information was set. After setup of the references to elements
* to sign may be added. After all references are added they can be signed.
*
*
*
* This method does not add the Signature element to the security header.
* See prependSignatureElementToHeader() method.
*
* @param doc
* The SOAP envelope as Document
* @param cr
* An instance of the Crypto API to handle keystore and
* certificates
* @param secHeader
* The security header that will hold the Signature. This is used
* to construct namespace prefixes for Signature. This method
* @throws WSSecurityException
*/
public void prepare(Document doc, Crypto cr, WSSecHeader secHeader)
throws WSSecurityException {
/*
* Gather some info about the document to process and store it for
* retrieval
*/
crypto = cr;
document = doc;
wsDocInfo = new WSDocInfo(doc.hashCode());
wsDocInfo.setCrypto(cr);
/*
* At first get the security token (certificate) according to the
* parameters.
*/
X509Certificate[] certs = null;
if (keyIdentifierType != WSConstants.UT_SIGNING
&& keyIdentifierType != WSConstants.CUSTOM_SYMM_SIGNING
&& keyIdentifierType != WSConstants.ENCRYPTED_KEY_SHA1_IDENTIFIER) {
certs = crypto.getCertificates(user);
if (certs == null || certs.length <= 0) {
throw new WSSecurityException(WSSecurityException.FAILURE,
"invalidX509Data", new Object[] { "for Signature" });
}
certUri = "CertId-" + certs[0].hashCode();
/*
* If no signature algo was set try to detect it according to the
* data stored in the certificate.
*/
if (sigAlgo == null) {
String pubKeyAlgo = certs[0].getPublicKey().getAlgorithm();
log.debug("automatic sig algo detection: " + pubKeyAlgo);
if (pubKeyAlgo.equalsIgnoreCase("DSA")) {
sigAlgo = XMLSignature.ALGO_ID_SIGNATURE_DSA;
} else if (pubKeyAlgo.equalsIgnoreCase("RSA")) {
sigAlgo = XMLSignature.ALGO_ID_SIGNATURE_RSA;
} else {
throw new WSSecurityException(
WSSecurityException.FAILURE,
"invalidX509Data",
new Object[] { "for Signature - unknown public key Algo" });
}
}
}
/*
* Get an initialized XMLSignature element.
*/
if (canonAlgo.equals(WSConstants.C14N_EXCL_OMIT_COMMENTS)) {
Element canonElem = XMLUtils.createElementInSignatureSpace(doc,
Constants._TAG_CANONICALIZATIONMETHOD);
canonElem.setAttributeNS(null, Constants._ATT_ALGORITHM, canonAlgo);
if (wssConfig.isWsiBSPCompliant()) {
Set prefixes = getInclusivePrefixes(secHeader.getSecurityHeader(), false);
InclusiveNamespaces inclusiveNamespaces = new InclusiveNamespaces(
doc, prefixes);
canonElem.appendChild(inclusiveNamespaces.getElement());
}
try {
SignatureAlgorithm signatureAlgorithm = new SignatureAlgorithm(
doc, sigAlgo);
sig = new XMLSignature(doc, null, signatureAlgorithm
.getElement(), canonElem);
} catch (XMLSecurityException e) {
log.error("", e);
throw new WSSecurityException(
WSSecurityException.FAILED_SIGNATURE, "noXMLSig");
}
} else {
try {
sig = new XMLSignature(doc, null, sigAlgo, canonAlgo);
} catch (XMLSecurityException e) {
log.error("", e);
throw new WSSecurityException(
WSSecurityException.FAILED_SIGNATURE, "noXMLSig");
}
}
sig.addResourceResolver(EnvelopeIdResolver.getInstance());
String sigUri = "Signature-" + sig.hashCode();
sig.setId(sigUri);
keyInfo = sig.getKeyInfo();
keyInfoUri = "KeyId-" + keyInfo.hashCode();
keyInfo.setId(keyInfoUri);
secRef = new SecurityTokenReference(doc);
strUri = "STRId-" + secRef.hashCode();
secRef.setID(strUri);
/*
* Prepare and setup the token references for this Signature
*/
switch (keyIdentifierType) {
case WSConstants.BST_DIRECT_REFERENCE:
Reference ref = new Reference(document);
ref.setURI("#" + certUri);
if (!useSingleCert) {
bstToken = new PKIPathSecurity(document);
((PKIPathSecurity) bstToken).setX509Certificates(certs, false,
crypto);
} else {
bstToken = new X509Security(document);
((X509Security) bstToken).setX509Certificate(certs[0]);
}
ref.setValueType(bstToken.getValueType());
secRef.setReference(ref);
bstToken.setID(certUri);
wsDocInfo.setBst(bstToken.getElement());
break;
case WSConstants.ISSUER_SERIAL:
XMLX509IssuerSerial data = new XMLX509IssuerSerial(document,
certs[0]);
X509Data x509Data = new X509Data(document);
x509Data.add(data);
secRef.setX509IssuerSerial(x509Data);
break;
case WSConstants.X509_KEY_IDENTIFIER:
secRef.setKeyIdentifier(certs[0]);
break;
case WSConstants.SKI_KEY_IDENTIFIER:
secRef.setKeyIdentifierSKI(certs[0], crypto);
break;
case WSConstants.UT_SIGNING:
Reference refUt = new Reference(document);
refUt.setValueType(WSConstants.USERNAMETOKEN_NS + "#UsernameToken");
String utId = usernameToken.getId();
refUt.setURI("#" + utId);
secRef.setReference(refUt);
secretKey = usernameToken.getSecretKey();
break;
case WSConstants.THUMBPRINT_IDENTIFIER:
secRef.setKeyIdentifierThumb(certs[0]);
break;
case WSConstants.ENCRYPTED_KEY_SHA1_IDENTIFIER:
secRef.setKeyIdentifierEncKeySHA1(this.encrKeySha1value);
break;
case WSConstants.CUSTOM_SYMM_SIGNING :
Reference refCust = new Reference(document);
refCust.setValueType(this.customTokenValueType);
refCust.setURI("#" + this.customTokenId);
secRef.setReference(refCust);
break;
default:
throw new WSSecurityException(WSSecurityException.FAILURE,
"unsupportedKeyId");
}
keyInfo.addUnknownElement(secRef.getElement());
}
/**
* This method adds references to the Signature.
*
* The added references are signed when calling
* computeSignature(). This method can be called several
* times to add references as required. addReferencesToSign()
* can be called any time after prepare.
*
* @param references
* A vector containing WSEncryptionPart objects
* that define the parts to sign.
* @param secHeader
* Used to compute namespaces to be inserted by
* InclusiveNamespaces to be WSI compliant.
* @throws WSSecurityException
*/
public void addReferencesToSign(Vector references, WSSecHeader secHeader)
throws WSSecurityException {
Transforms transforms = null;
Element envelope = document.getDocumentElement();
for (int part = 0; part < references.size(); part++) {
WSEncryptionPart encPart = (WSEncryptionPart) references.get(part);
String idToSign = encPart.getId();
String elemName = encPart.getName();
String nmSpace = encPart.getNamespace();
/*
* Set up the elements to sign. There are two reserved element
* names: "Token" and "STRTransform" "Token": Setup the Signature to
* either sign the information that points to the security token or
* the token itself. If its a direct reference sign the token,
* otherwise sign the KeyInfo Element. "STRTransform": Setup the
* ds:Reference to use STR Transform
*
*/
transforms = new Transforms(document);
try {
if (idToSign != null) {
Element toSignById = WSSecurityUtil.findElementById(
document.getDocumentElement(), idToSign,
WSConstants.WSU_NS);
if (toSignById == null) {
toSignById = WSSecurityUtil.findElementById(document
.getDocumentElement(), idToSign, null);
}
transforms
.addTransform(Transforms.TRANSFORM_C14N_EXCL_OMIT_COMMENTS);
if (wssConfig.isWsiBSPCompliant()) {
transforms.item(0).getElement().appendChild(
new InclusiveNamespaces(document,
getInclusivePrefixes(toSignById))
.getElement());
}
sig.addDocument("#" + idToSign, transforms);
} else if (elemName.equals("Token")) {
transforms
.addTransform(Transforms.TRANSFORM_C14N_EXCL_OMIT_COMMENTS);
if (keyIdentifierType == WSConstants.BST_DIRECT_REFERENCE) {
if (wssConfig.isWsiBSPCompliant()) {
transforms
.item(0)
.getElement()
.appendChild(
new InclusiveNamespaces(
document,
getInclusivePrefixes(secHeader.getSecurityHeader()))
.getElement());
}
sig.addDocument("#" + certUri, transforms);
} else {
if (wssConfig.isWsiBSPCompliant()) {
transforms.item(0).getElement().appendChild(
new InclusiveNamespaces(document,
getInclusivePrefixes(keyInfo
.getElement()))
.getElement());
}
sig.addDocument("#" + keyInfoUri, transforms);
}
} else if (elemName.equals("STRTransform")) { // STRTransform
Element ctx = createSTRParameter(document);
transforms.addTransform(
STRTransform.implementedTransformURI, ctx);
sig.addDocument("#" + strUri, transforms);
} else if (elemName.equals("Assertion")) { // Assertion
String id = null;
id = SAMLUtil.getAssertionId(envelope, elemName, nmSpace);
Element body = (Element) WSSecurityUtil.findElement(
envelope, elemName, nmSpace);
if (body == null) {
throw new WSSecurityException(
WSSecurityException.FAILURE, "noEncElement",
new Object[] { nmSpace + ", " + elemName });
}
transforms
.addTransform(Transforms.TRANSFORM_C14N_EXCL_OMIT_COMMENTS);
if (wssConfig.isWsiBSPCompliant()) {
transforms.item(0).getElement().appendChild(
new InclusiveNamespaces(document,
getInclusivePrefixes(body))
.getElement());
}
String prefix = WSSecurityUtil.setNamespace(body,
WSConstants.WSU_NS, WSConstants.WSU_PREFIX);
body.setAttributeNS(WSConstants.WSU_NS, prefix + ":Id", id);
sig.addDocument("#" + id, transforms);
} else {
Element body = (Element) WSSecurityUtil.findElement(
envelope, elemName, nmSpace);
if (body == null) {
throw new WSSecurityException(
WSSecurityException.FAILURE, "noEncElement",
new Object[] { nmSpace + ", " + elemName });
}
transforms
.addTransform(Transforms.TRANSFORM_C14N_EXCL_OMIT_COMMENTS);
if (wssConfig.isWsiBSPCompliant()) {
transforms.item(0).getElement().appendChild(
new InclusiveNamespaces(document,
getInclusivePrefixes(body))
.getElement());
}
sig.addDocument("#" + setWsuId(body), transforms);
}
} catch (TransformationException e1) {
throw new WSSecurityException(
WSSecurityException.FAILED_SIGNATURE, "noXMLSig", null,
e1);
} catch (XMLSignatureException e1) {
throw new WSSecurityException(
WSSecurityException.FAILED_SIGNATURE, "noXMLSig", null,
e1);
}
}
}
/**
* Prepends the Signature element to the elements already in the Security
* header.
*
* The method can be called any time after prepare().
* This allows to insert the Signature element at any position in the
* Security header.
*
* @param securityHeader
* The secHeader that holds the Signature element.
*/
public void prependToHeader(WSSecHeader secHeader) {
WSSecurityUtil.prependChildElement(document, secHeader.getSecurityHeader(), sig
.getElement(), false);
}
/**
* Appends the Signature element to the elements already in the Security
* header.
*
* The method can be called any time after prepare().
* This allows to insert the Signature element at any position in the
* Security header.
*
* @param securityHeader
* The secHeader that holds the Signature element.
*/
public void appendToHeader(WSSecHeader secHeader) {
WSSecurityUtil.appendChildElement(document, secHeader.getSecurityHeader(), sig
.getElement());
}
/**
* Prepend the BinarySecurityToken to the elements already in the Security
* header.
*
* The method can be called any time after prepare().
* This allows to insert the BST element at any position in the Security
* header.
*
* @param secHeader
* The security header that holds the BST element.
*/
public void prependBSTElementToHeader(WSSecHeader secHeader) {
if (bstToken != null) {
WSSecurityUtil.prependChildElement(document, secHeader.getSecurityHeader(),
bstToken.getElement(), false);
}
bstToken = null;
}
/**
* Returns the SignatureElement.
* The method can be called any time after prepare().
* @return The DOM Element of the signature.
*/
public Element getSignatureElement() {
return this.sig.getElement();
}
/**
* Returns the BST Token element.
* The method can be called any time after prepare().
* @return
*/
public Element getBinarySecurityTokenElement() {
if(this.bstToken != null) {
return this.bstToken.getElement();
} else {
return null;
}
}
public void appendBSTElementToHeader(WSSecHeader secHeader) {
if (bstToken != null) {
WSSecurityUtil.appendChildElement(document, secHeader.getSecurityHeader(),
bstToken.getElement());
}
bstToken = null;
}
/**
* Compute the Signature over the references.
*
* After references are set this method computes the Signature for them.
* This method can be called any time after the references were set. See
* addReferencesToSign().
*
* @throws WSSecurityException
*/
public void computeSignature() throws WSSecurityException {
WSDocInfoStore.store(wsDocInfo);
try {
if (keyIdentifierType == WSConstants.UT_SIGNING ||
keyIdentifierType == WSConstants.CUSTOM_SYMM_SIGNING ||
keyIdentifierType == WSConstants.ENCRYPTED_KEY_SHA1_IDENTIFIER) {
sig.sign(sig.createSecretKey(secretKey));
} else {
sig.sign(crypto.getPrivateKey(user, password));
}
signatureValue = sig.getSignatureValue();
} catch (XMLSignatureException e1) {
throw new WSSecurityException(WSSecurityException.FAILED_SIGNATURE,
null, null, e1);
} catch (Exception e1) {
throw new WSSecurityException(WSSecurityException.FAILED_SIGNATURE,
null, null, e1);
} finally {
WSDocInfoStore.delete(wsDocInfo);
}
}
/**
* Builds a signed soap envelope.
*
* This is a convenience method and for backward compatibility. The method
* creates a Signature and puts it into the Security header. It does so by
* calling the single functions in order to perform a one shot signature.
* This method is compatible with the build method of the previous version
* with the exception of the additional WSSecHeader parameter.
*
* @param doc
* The unsigned SOAP envelope as Document
* @param cr
* An instance of the Crypto API to handle keystore and
* certificates
* @param secHeader
* the security header element to hold the encrypted key element.
* @return A signed SOAP envelope as Document
* @throws WSSecurityException
*/
public Document build(Document doc, Crypto cr, WSSecHeader secHeader)
throws WSSecurityException {
doDebug = log.isDebugEnabled();
if (doDebug) {
log.debug("Beginning signing...");
}
prepare(doc, cr, secHeader);
SOAPConstants soapConstants = WSSecurityUtil.getSOAPConstants(doc
.getDocumentElement());
if (parts == null) {
parts = new Vector();
WSEncryptionPart encP = new WSEncryptionPart(soapConstants
.getBodyQName().getLocalPart(), soapConstants
.getEnvelopeURI(), "Content");
parts.add(encP);
}
addReferencesToSign(parts, secHeader);
prependToHeader(secHeader);
/*
* if we have a BST prepend it in front of the Signature according to
* strict layout rules.
*/
if (bstToken != null) {
prependBSTElementToHeader(secHeader);
}
computeSignature();
return (doc);
}
protected Element createSTRParameter(Document doc) {
Element transformParam = doc.createElementNS(WSConstants.WSSE_NS,
WSConstants.WSSE_PREFIX + ":TransformationParameters");
WSSecurityUtil.setNamespace(transformParam, WSConstants.WSSE_NS,
WSConstants.WSSE_PREFIX);
Element canonElem = doc.createElementNS(WSConstants.SIG_NS,
WSConstants.SIG_PREFIX + ":CanonicalizationMethod");
WSSecurityUtil.setNamespace(canonElem, WSConstants.SIG_NS,
WSConstants.SIG_PREFIX);
canonElem.setAttributeNS(null, "Algorithm",
Canonicalizer.ALGO_ID_C14N_EXCL_OMIT_COMMENTS);
transformParam.appendChild(canonElem);
return transformParam;
}
protected Set getInclusivePrefixes(Element target) {
return getInclusivePrefixes(target, true);
}
protected Set getInclusivePrefixes(Element target, boolean excludeVisible) {
Set result = new HashSet();
Node parent = target;
NamedNodeMap attributes;
Node attribute;
while (!(parent.getParentNode() instanceof Document)) {
parent = parent.getParentNode();
attributes = parent.getAttributes();
for (int i = 0; i < attributes.getLength(); i++) {
attribute = attributes.item(i);
if (attribute.getNamespaceURI() != null
&& attribute.getNamespaceURI().equals(
org.apache.ws.security.WSConstants.XMLNS_NS)) {
if (attribute.getNodeName().equals("xmlns")) {
result.add("#default");
} else {
result.add(attribute.getLocalName());
}
}
}
}
if (excludeVisible == true) {
attributes = target.getAttributes();
for (int i = 0; i < attributes.getLength(); i++) {
attribute = attributes.item(i);
if (attribute.getNamespaceURI() != null
&& attribute.getNamespaceURI().equals(
org.apache.ws.security.WSConstants.XMLNS_NS)) {
if (attribute.getNodeName().equals("xmlns")) {
result.remove("#default");
} else {
result.remove(attribute.getLocalName());
}
}
if (attribute.getPrefix() != null) {
result.remove(attribute.getPrefix());
}
}
if (target.getPrefix() == null) {
result.remove("#default");
} else {
result.remove(target.getPrefix());
}
}
return result;
}
public void setSecretKey(byte[] secretKey) {
this.secretKey = secretKey;
}
public void setCustomTokenValueType(String customTokenValueType) {
this.customTokenValueType = customTokenValueType;
}
public void setCustomTokenId(String customTokenId) {
this.customTokenId = customTokenId;
}
public void setEncrKeySha1value(String encrKeySha1value) {
this.encrKeySha1value = encrKeySha1value;
}
}