Example usage for java.security Signature initSign

Introduction

In this page you can find the example usage for java.security Signature initSign.

Prototype

public final void initSign(PrivateKey privateKey) throws InvalidKeyException 

Source Link

Document

Initialize this object for signing.

Usage

From source file:com.vmware.identity.samlservice.SamlServiceTest.java

@Test
public void testVerifySignature() throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
    // pick a sample message
    String message = "This is a sample message to be encoded";

    // sign using our algorithm
    SignatureAlgorithm algo = SignatureAlgorithm.getSignatureAlgorithmForURI(TestConstants.SIGNATURE_ALGORITHM);
    Signature sig = Signature.getInstance(algo.getAlgorithmName());
    sig.initSign(privateKey);

    byte[] messageBytes = message.getBytes();
    sig.update(messageBytes);//from  w  ww  .  j a v  a 2 s .c  om

    byte[] sigBytes = sig.sign();
    String signature = Shared.encodeBytes(sigBytes);

    // verify signature here
    sig.initVerify(x509Certificate.getPublicKey());
    sig.update(messageBytes);
    boolean verifies = sig.verify(sigBytes);
    log.debug("signature verifies in test: " + verifies);

    // just call verifySignature method and expect to not throw
    service.verifySignature(message, signature);
}

---

From source file:com.torresbueno.RSAEncryptionDecryptionUtil.java

/**
 * Sign a message.//w w  w  . java  2s .c o  m
 * @param data
 * @param pk
 * @return
 */
public byte[] sign(byte[] data, PrivateKey pk) throws Exception {
    Signature sig = Signature.getInstance("MD5WithRSA");
    sig.initSign(pk);
    sig.update(data);
    byte[] signatureBytes = sig.sign();
    return signatureBytes;
}

---

From source file:mx.bigdata.sat.cfdi.CFDv33.java

String getSignature(PrivateKey key) throws Exception {
    byte[] bytes = getOriginalBytes();
    Signature sig = Signature.getInstance("SHA256withRSA");
    sig.initSign(key);
    sig.update(bytes);//from w w w. j  a  v  a 2  s  . c om
    byte[] signed = sig.sign();
    Base64 b64 = new Base64(-1);
    return b64.encodeToString(signed);
}

---

From source file:test.unit.be.fedict.eid.applet.service.SignatureDataMessageHandlerTest.java

public void testHandleMessage() throws Exception {
    // setup/*from   w w  w .  ja  v a  2s. c  om*/
    KeyPair keyPair = MiscTestUtils.generateKeyPair();
    DateTime notBefore = new DateTime();
    DateTime notAfter = notBefore.plusYears(1);
    X509Certificate certificate = MiscTestUtils.generateCertificate(keyPair.getPublic(), "CN=Test", notBefore,
            notAfter, null, keyPair.getPrivate(), true, 0, null, null);

    ServletConfig mockServletConfig = EasyMock.createMock(ServletConfig.class);
    Map<String, String> httpHeaders = new HashMap<String, String>();
    HttpSession mockHttpSession = EasyMock.createMock(HttpSession.class);
    HttpServletRequest mockServletRequest = EasyMock.createMock(HttpServletRequest.class);

    EasyMock.expect(mockServletConfig.getInitParameter("AuditService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("AuditServiceClass")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureServiceClass"))
            .andStubReturn(SignatureTestService.class.getName());

    MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
    byte[] document = "hello world".getBytes();
    byte[] digestValue = messageDigest.digest(document);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_VALUE_SESSION_ATTRIBUTE))
            .andStubReturn(digestValue);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_ALGO_SESSION_ATTRIBUTE))
            .andStubReturn("SHA-1");

    SignatureDataMessage message = new SignatureDataMessage();
    message.certificateChain = new LinkedList<X509Certificate>();
    message.certificateChain.add(certificate);

    Signature signature = Signature.getInstance("SHA1withRSA");
    signature.initSign(keyPair.getPrivate());
    signature.update(document);
    byte[] signatureValue = signature.sign();
    message.signatureValue = signatureValue;

    // prepare
    EasyMock.replay(mockServletConfig, mockHttpSession, mockServletRequest);

    // operate
    AppletServiceServlet.injectInitParams(mockServletConfig, this.testedInstance);
    this.testedInstance.init(mockServletConfig);
    this.testedInstance.handleMessage(message, httpHeaders, mockServletRequest, mockHttpSession);

    // verify
    EasyMock.verify(mockServletConfig, mockHttpSession, mockServletRequest);
    assertEquals(signatureValue, SignatureTestService.getSignatureValue());
}

---

From source file:test.unit.be.fedict.eid.applet.service.SignatureDataMessageHandlerTest.java

public void testHandleMessageWithAudit() throws Exception {
    // setup/*from w w w. j  a v a2 s .c o m*/
    KeyPair keyPair = MiscTestUtils.generateKeyPair();
    DateTime notBefore = new DateTime();
    DateTime notAfter = notBefore.plusYears(1);
    X509Certificate certificate = MiscTestUtils.generateCertificate(keyPair.getPublic(),
            "CN=Test,SERIALNUMBER=1234", notBefore, notAfter, null, keyPair.getPrivate(), true, 0, null, null);

    ServletConfig mockServletConfig = EasyMock.createMock(ServletConfig.class);
    Map<String, String> httpHeaders = new HashMap<String, String>();
    HttpSession mockHttpSession = EasyMock.createMock(HttpSession.class);
    HttpServletRequest mockServletRequest = EasyMock.createMock(HttpServletRequest.class);

    EasyMock.expect(mockServletConfig.getInitParameter("AuditService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("AuditServiceClass"))
            .andStubReturn(AuditTestService.class.getName());
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureServiceClass"))
            .andStubReturn(SignatureTestService.class.getName());

    MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
    byte[] document = "hello world".getBytes();
    byte[] digestValue = messageDigest.digest(document);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_VALUE_SESSION_ATTRIBUTE))
            .andStubReturn(digestValue);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_ALGO_SESSION_ATTRIBUTE))
            .andStubReturn("SHA-1");

    SignatureDataMessage message = new SignatureDataMessage();
    message.certificateChain = new LinkedList<X509Certificate>();
    message.certificateChain.add(certificate);

    Signature signature = Signature.getInstance("SHA1withRSA");
    signature.initSign(keyPair.getPrivate());
    signature.update(document);
    byte[] signatureValue = signature.sign();
    message.signatureValue = signatureValue;

    // prepare
    EasyMock.replay(mockServletConfig, mockHttpSession, mockServletRequest);

    // operate
    AppletServiceServlet.injectInitParams(mockServletConfig, this.testedInstance);
    this.testedInstance.init(mockServletConfig);
    this.testedInstance.handleMessage(message, httpHeaders, mockServletRequest, mockHttpSession);

    // verify
    EasyMock.verify(mockServletConfig, mockHttpSession, mockServletRequest);
    assertEquals(signatureValue, SignatureTestService.getSignatureValue());
    assertEquals("1234", AuditTestService.getAuditSigningUserId());
}

---

From source file:com.vmware.identity.samlservice.SamlServiceTest.java

@Test
public void testVerifySignatureVcd2() throws Exception {
    // pick a sample VCD message
    String message = "SAMLResponse=fZJNb%2BIwEIb%2FSuR7%2FJWQJhYBrRatVK"
            + "lcCsuhl5XjTCAosbMZm%2B7P3wClHxx6nPE7M%2B884%2FnyX99FJxixdb"
            + "YkgnISgTWubu2%2BJL%2B3v%2BKcLBdz1H0nB%2FXk9i74Z8DBWYRoKrWo"
            + "rm8lCaNVTmOLyuoeUHmjNj%2FWT0pSrobReWdcR6IVoG%2Bt9pdxB%2B8H"
            + "VIyJQlKR5VTIggqu8jRNmOlcqNm5OdtMZjq4Dme6azWyk6lJ9LgqyZ%2Bq"
            + "SUzKCw41AM%2BNEEZC1dQJT7K0qJJmktmb460riZamqhueFW1xNKI6pqbh"
            + "TXtIjqbJk6Sa5IgBHi16bX1JJBcy5lkssy3nSsyUEFTM8hcS7W7QpgXJGy"
            + "J1KR4%2Fk%2FkejEaE8QyDLG4whrE%2FxLbtq4DxqY%2FFwywWklOwe3rq"
            + "X%2FUI1LhePaRpyl6hQnTs3E2yNXhda6%2BZwWHOPtt5v9%2FGax%2FwLv"
            + "zpaoh2ugvwvVW8qNUmGAOIhN21WU9JvYfFM%2FwN040jvOqa0L2ZuRfepT"
            + "%2Fir79s8R8%3D&SigAlg=http%3A%2F%2Fwww.w3.org%2F2001%2F04%" + "2Fxmldsig-more%23rsa-sha256";

    // sign using our algorithm
    SignatureAlgorithm algo = SignatureAlgorithm.getSignatureAlgorithmForURI(TestConstants.SIGNATURE_ALGORITHM);
    Signature sig = Signature.getInstance(algo.getAlgorithmName());
    sig.initSign(privateKey);

    byte[] messageBytes = message.getBytes();
    sig.update(messageBytes);/*  ww w . j  av  a 2 s .  c o m*/

    byte[] sigBytes = sig.sign();
    String signature = Shared.encodeBytes(sigBytes);

    // verify signature here
    sig.initVerify(x509Certificate.getPublicKey());
    sig.update(messageBytes);
    boolean verifies = sig.verify(sigBytes);
    log.debug("signature verifies in test: " + verifies);

    // just call verifySignature method and expect to not throw
    service.verifySignature(message, signature);
    /* disabled now: task 1301740
    // import our csp settings
    CasIdmClient idmClient = new CasIdmClient(SharedUtils.getIdmHostName());
            
    SharedUtils.importConfiguration(idmClient, VSPHERE_LOCAL_TENANT,
        "/csp2.xml");
            
    CasIdmAccessor idmAccessor = new CasIdmAccessor(idmClient);
    log.debug("CSP settings imported successfully");
    idmAccessor.setTenant(VSPHERE_LOCAL_TENANT);
            
    // create new SamlService
    SamlServiceFactory factory2 = new DefaultSamlServiceFactory();
    CertificateFactory certFactory = CertificateFactory
        .getInstance("X.509");
    CertPath certPath = certFactory.generateCertPath(idmAccessor
        .getSAMLAuthorityChain());
    SamlService service2 = factory2.createSamlService(
        idmClient.getTenantPrivateKey(VSPHERE_LOCAL_TENANT),
        SignatureAlgorithm.RSA_SHA256, SignatureAlgorithm.RSA_SHA256,
        idmClient.getEntityID(VSPHERE_LOCAL_TENANT), certPath);
            
    // now call it again with generated signature
    String vcdSignature = "tTUaPscQSmPKkqP9XGgCHZYoH%2FUy2MvZ1eoeP%2B3Y" +
        "nTDLxiuV5glxngtMbOGspo9NbL37lNVjdCUo7qQVDznUNmKpIOGa%2BGwE" +
        "jcgqeS7mBDsYPcICxVHZPYxbIaFCmlTIo125olswe4LuP92lIroe%2B%2F" +
        "DpeNXIGjUAFLHQwlLO7r73cHLH%2BPY2pcYww4X2I7Mhk%2FQ7I3tdMX1O" +
        "eOhqcRpMn8uyOs6JmVbMoVXuTVKyO96LmQUPCQVLmVjDeD%2BZjVALVLbs" +
        "vjWsdFt%2F%2Ff2MEXIQkYmeIM5HxZ5rW0uXRocarUrp8nhgxk%2FEQGhk" +
        "00KYP1xZTCC9JZR6OcbXJZZemBgq%2BA%3D%3D";
    vcdSignature = URLDecoder.decode(vcdSignature, "UTF-8");
    // just call verifySignature method and expect to not throw
            
    service2.verifySignature(message, vcdSignature); */
}

---

From source file:test.unit.be.fedict.eid.applet.service.SignatureDataMessageHandlerTest.java

public void testHandleMessagePSS() throws Exception {
    // setup//from w ww.j  a  v a2 s.  c o m
    KeyPair keyPair = MiscTestUtils.generateKeyPair();
    DateTime notBefore = new DateTime();
    DateTime notAfter = notBefore.plusYears(1);
    X509Certificate certificate = MiscTestUtils.generateCertificate(keyPair.getPublic(), "CN=Test", notBefore,
            notAfter, null, keyPair.getPrivate(), true, 0, null, null);

    ServletConfig mockServletConfig = EasyMock.createMock(ServletConfig.class);
    Map<String, String> httpHeaders = new HashMap<String, String>();
    HttpSession mockHttpSession = EasyMock.createMock(HttpSession.class);
    HttpServletRequest mockServletRequest = EasyMock.createMock(HttpServletRequest.class);

    EasyMock.expect(mockServletConfig.getInitParameter("AuditService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("AuditServiceClass")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureServiceClass"))
            .andStubReturn(SignatureTestService.class.getName());

    MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
    byte[] document = "hello world".getBytes();
    byte[] digestValue = messageDigest.digest(document);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_VALUE_SESSION_ATTRIBUTE))
            .andStubReturn(digestValue);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_ALGO_SESSION_ATTRIBUTE))
            .andStubReturn("SHA-1-PSS");

    SignatureDataMessage message = new SignatureDataMessage();
    message.certificateChain = new LinkedList<X509Certificate>();
    message.certificateChain.add(certificate);

    Signature signature = Signature.getInstance("SHA1withRSA/PSS", "BC");
    signature.initSign(keyPair.getPrivate());
    signature.update(document);
    byte[] signatureValue = signature.sign();
    message.signatureValue = signatureValue;

    // prepare
    EasyMock.replay(mockServletConfig, mockHttpSession, mockServletRequest);

    // operate
    AppletServiceServlet.injectInitParams(mockServletConfig, this.testedInstance);
    this.testedInstance.init(mockServletConfig);
    this.testedInstance.handleMessage(message, httpHeaders, mockServletRequest, mockHttpSession);

    // verify
    EasyMock.verify(mockServletConfig, mockHttpSession, mockServletRequest);
    assertEquals(signatureValue, SignatureTestService.getSignatureValue());
}

---

From source file:test.unit.be.fedict.eid.applet.service.SignatureDataMessageHandlerTest.java

@Test
public void testHandleMessageInvalidSignature() throws Exception {
    // setup/*from   w  w  w. ja v  a2s. c om*/
    KeyPair keyPair = MiscTestUtils.generateKeyPair();
    DateTime notBefore = new DateTime();
    DateTime notAfter = notBefore.plusYears(1);
    X509Certificate certificate = MiscTestUtils.generateCertificate(keyPair.getPublic(), "CN=Test", notBefore,
            notAfter, null, keyPair.getPrivate(), true, 0, null, null);

    ServletConfig mockServletConfig = EasyMock.createMock(ServletConfig.class);
    Map<String, String> httpHeaders = new HashMap<String, String>();
    HttpSession mockHttpSession = EasyMock.createMock(HttpSession.class);
    HttpServletRequest mockServletRequest = EasyMock.createMock(HttpServletRequest.class);

    EasyMock.expect(mockServletConfig.getInitParameter("AuditService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("AuditServiceClass"))
            .andStubReturn(AuditTestService.class.getName());
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureServiceClass"))
            .andStubReturn(SignatureTestService.class.getName());

    EasyMock.expect(mockServletRequest.getRemoteAddr()).andStubReturn("remote-address");

    MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
    byte[] document = "hello world".getBytes();
    byte[] digestValue = messageDigest.digest(document);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_VALUE_SESSION_ATTRIBUTE))
            .andStubReturn(digestValue);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_ALGO_SESSION_ATTRIBUTE))
            .andStubReturn("SHA-1");

    SignatureDataMessage message = new SignatureDataMessage();
    message.certificateChain = new LinkedList<X509Certificate>();
    message.certificateChain.add(certificate);

    Signature signature = Signature.getInstance("SHA1withRSA");
    signature.initSign(keyPair.getPrivate());
    signature.update("foobar-document".getBytes());
    byte[] signatureValue = signature.sign();
    message.signatureValue = signatureValue;

    // prepare
    EasyMock.replay(mockServletConfig, mockHttpSession, mockServletRequest);

    // operate
    AppletServiceServlet.injectInitParams(mockServletConfig, this.testedInstance);
    this.testedInstance.init(mockServletConfig);
    try {
        this.testedInstance.handleMessage(message, httpHeaders, mockServletRequest, mockHttpSession);
        fail();
    } catch (ServletException e) {
        LOG.debug("expected exception: " + e.getMessage());
        // verify
        EasyMock.verify(mockServletConfig, mockHttpSession, mockServletRequest);
        assertNull(SignatureTestService.getSignatureValue());
        assertEquals("remote-address", AuditTestService.getAuditSignatureRemoteAddress());
        assertEquals(certificate, AuditTestService.getAuditSignatureClientCertificate());
    }
}

---

From source file:com.vmware.identity.samlservice.SamlServiceTest.java

@Test
public void testVerifySignatureVcd() throws Exception {
    // pick a sample VCD message
    String message = "SAMLResponse=fZJNb9swDIb%2FiqF7LPnbEeIUw4oCAVoMqN"
            + "MedhlomU49yJJrSml%2F%2FuykX8uhFwGkXpKvHmpz9Tro4IgT9dZULAoF"
            + "C9Ao2%2FbmULGH%2Fc2qZFfbDcGg41He2oP17h5ptIYwmEsNyfNdxfxkpA"
            + "XqSRoYkKRTsv5xdyvjUMhxss4qq1lwjeR6A%2B407sm5kSTnkQijtAgzES"
            + "apTNOEK219y%2B104IpGvkzg9exI49kBB90D8aNqWbC7rtifrmkhVaop26h"
            + "oijJLEOajXBdtl2KSZ7PMvNve24pBmkG%2BLiBumr%2BJyNZJLqKuzRC7J"
            + "4RmZrAj8rgz5MC4isUiilciW8XRPo5klktRhlGZ%2FmbB4zu5%2BZXsjZM"
            + "8FU9f8XxPB4hwWoiw7UJkBqJ7419XAGMeNqg1Hj2Gx%2BEFJgyVHWQhSsF"
            + "fsCGyfOkS87r%2BtaDa8K8OPvZWO3CeLsKftsXgEbTH793RSS1rrxQSMX7"
            + "R5m5OwgG39%2Fjs590GdNZ1Xr%2BZuRRepD%2Fj%2F3%2FX9h8%3D&SigA"
            + "lg=http%3A%2F%2Fwww.w3.org%2F2001%2F04%2Fxmldsig-more%23rs" + "a-sha256";

    // sign using our algorithm
    SignatureAlgorithm algo = SignatureAlgorithm.getSignatureAlgorithmForURI(TestConstants.SIGNATURE_ALGORITHM);
    Signature sig = Signature.getInstance(algo.getAlgorithmName());
    sig.initSign(privateKey);

    byte[] messageBytes = message.getBytes();
    sig.update(messageBytes);/*from  w w  w  . jav a  2 s .  co  m*/

    byte[] sigBytes = sig.sign();
    String signature = Shared.encodeBytes(sigBytes);

    // verify signature here
    sig.initVerify(x509Certificate.getPublicKey());
    sig.update(messageBytes);
    boolean verifies = sig.verify(sigBytes);
    log.debug("signature verifies in test: " + verifies);

    // just call verifySignature method and expect to not throw
    service.verifySignature(message, signature);
    /* disabled now: task 1301740
    // import our csp settings
    CasIdmClient idmClient = new CasIdmClient(SharedUtils.getIdmHostName());
            
    SharedUtils.importConfiguration(idmClient, VSPHERE_LOCAL_TENANT,
        "/csp.xml");
            
    CasIdmAccessor idmAccessor = new CasIdmAccessor(idmClient);
    log.debug("CSP settings imported successfully");
    idmAccessor.setTenant(VSPHERE_LOCAL_TENANT);
            
    // create new SamlService
    SamlServiceFactory factory2 = new DefaultSamlServiceFactory();
    CertificateFactory certFactory = CertificateFactory
        .getInstance("X.509");
    CertPath certPath = certFactory.generateCertPath(idmAccessor
        .getSAMLAuthorityChain());
    SamlService service2 = factory2.createSamlService(
        idmClient.getTenantPrivateKey(VSPHERE_LOCAL_TENANT),
        SignatureAlgorithm.RSA_SHA256, SignatureAlgorithm.RSA_SHA256,
        idmClient.getEntityID(VSPHERE_LOCAL_TENANT), certPath);
            
    // now call it again with generated signature
    String vcdSignature = "YkgxdGRqY3FiVlQvUWRLTWRHUjF1V2dJeGJZa0pHNTJJ" +
        "NGd0RUsyUEtZTDAzcloyNWJ3dmxuLzg3TlNMN1JsSVhYc2NOSkxTaVZ4Mm" +
        "c4TjNxWTBTLzg2Z0dvYjZVdVU5elY2cEZtQnJ2N0ZFZFdndFJwVDlvZE5w" +
        "VVpaa3BxQ1ROZVU4STRQYTltMVVOTDB1TUp5ckJvaVBnY3dUbk5LTko4S0" +
        "dxMWNLMlVuWTZBZGlodW5XaXdTZW5CVDVVRjZ6MHFHWmZ2d25kM2dkTWl4" +
        "eHY2WWovVElXWUg5REZYN2FJN3R0a3RTaSs5dUhTbUViMTFWRElNcGhpbm" +
        "1rdldGT3VWWHIxWFR5RUNKYnpLNXhYR3ArZXZ1UGk2TzR1UDlEVjlVdjlU" +
        "V01uVVNPYkw1aExEUDFadC9Vbzl0S1MySWIwcUp0OGIzVzV2UzVDWVdlUU" +
        "JGRTBnPT0%3D";
    vcdSignature = URLDecoder.decode(vcdSignature, "UTF-8");
    vcdSignature = Shared.decodeString(vcdSignature);
    // just call verifySignature method and expect to not throw
            
    service2.verifySignature(message, vcdSignature);*/
}

---

From source file:test.unit.be.fedict.eid.applet.service.SignatureDataMessageHandlerTest.java

public void testHandleMessagePSS_SHA256() throws Exception {
    // setup//www .  java2  s .  c om
    KeyPair keyPair = MiscTestUtils.generateKeyPair();
    DateTime notBefore = new DateTime();
    DateTime notAfter = notBefore.plusYears(1);
    X509Certificate certificate = MiscTestUtils.generateCertificate(keyPair.getPublic(), "CN=Test", notBefore,
            notAfter, null, keyPair.getPrivate(), true, 0, null, null);

    ServletConfig mockServletConfig = EasyMock.createMock(ServletConfig.class);
    Map<String, String> httpHeaders = new HashMap<String, String>();
    HttpSession mockHttpSession = EasyMock.createMock(HttpSession.class);
    HttpServletRequest mockServletRequest = EasyMock.createMock(HttpServletRequest.class);

    EasyMock.expect(mockServletConfig.getInitParameter("AuditService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("AuditServiceClass")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureService")).andStubReturn(null);
    EasyMock.expect(mockServletConfig.getInitParameter("SignatureServiceClass"))
            .andStubReturn(SignatureTestService.class.getName());

    MessageDigest messageDigest = MessageDigest.getInstance("SHA256");
    byte[] document = "hello world".getBytes();
    byte[] digestValue = messageDigest.digest(document);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_VALUE_SESSION_ATTRIBUTE))
            .andStubReturn(digestValue);
    EasyMock.expect(mockHttpSession.getAttribute(SignatureDataMessageHandler.DIGEST_ALGO_SESSION_ATTRIBUTE))
            .andStubReturn("SHA-256-PSS");

    SignatureDataMessage message = new SignatureDataMessage();
    message.certificateChain = new LinkedList<X509Certificate>();
    message.certificateChain.add(certificate);

    Signature signature = Signature.getInstance("SHA256withRSA/PSS", "BC");
    signature.initSign(keyPair.getPrivate());
    signature.update(document);
    byte[] signatureValue = signature.sign();
    message.signatureValue = signatureValue;

    // prepare
    EasyMock.replay(mockServletConfig, mockHttpSession, mockServletRequest);

    // operate
    AppletServiceServlet.injectInitParams(mockServletConfig, this.testedInstance);
    this.testedInstance.init(mockServletConfig);
    this.testedInstance.handleMessage(message, httpHeaders, mockServletRequest, mockHttpSession);

    // verify
    EasyMock.verify(mockServletConfig, mockHttpSession, mockServletRequest);
    assertEquals(signatureValue, SignatureTestService.getSignatureValue());
}

---

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