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# Customize the security

This topic describes how to how to configure special cases common to Web Service security.

### Reference a token with a SubjectKeyIdentifier

By default, Web Services adds all of the defined X.509 tokens to the SOAP envelope and references them as binary tokens. It is also possible to exclude the tokens from the message and reference them with an SKI (Subject Key Identifier). This is common with tokens that are used for encryption.

To reference a token with an SKI:

1. Add a token as described in the Add security to a Web Service script.

2. In the script, change the value for Add to false:

       SECURITY_TOKEN, "Type=X509","LogicalName=myToken", "StoreName=My", "IDType=SubjectName", "IDValue=CN=myCert", "StoreLocation=CurrentUser", "Add=False",

3. If necessary, set the useRFC3280 settings as described in useRFC3280 below.

### Customize the UserName token

You can customize the UserName token with a nonce and timestamp.

To customize the UserName token:

1. Locate the web_service_set_security function in the script.

2. Add the attributes and their values according to this chart:

   Name | Meaning | Possible values
   --- | --- | ---
   IsNonceIncluded | Include a nonce with the token. | True (default) or False
   TimestampFormat | The timestamp format to use with the token. | None. no timestamp Full. a <timestamp> element with <created> and <expired> inner elements Created. (default) only a <created> element

   For example:

       web_service_set_security(
               SECURITY_TOKEN, "Type=USERNAME","LogicalName=myToken", "UserName=John", "Password=1234",  "PasswordOptions=SendPlainText", "IsNonceIncluded=true", "TimestampFormat=Full", "Add=True",
               LAST);

### Customize the encryption

You can customize encryption by indicating whether to encrypt the whole element or only its content. This is common when encrypting tokens such as a user name. By default, only the content is encrypted.

To encrypt the entire token:

1. Locate the web_service_set_security function in the script.

2. Add the EncryptionType attribute with the value Element.

       web_service_set_security(
       ...
       ENCRYPTED_DATA, "UseToken=myToken", "TargetToken=myOtherToken",
       "EncryptionType=Element",
       LAST);

3. To return to the default, remove the EncryptionType attribute or set it to Content.

### Customize WS-Security

To change the algorithm Web Services uses for encryption, or to modify some other low-level security details.

To customize WS-Security:

1. To change either of these items, open the <installdir>/bin/mmdrv.exe.config file in a text editor.

2. If this file does not contain the <microsoft.web.services2> element, add it as shown below.

       <configuration>
       ...
         <microsoft.web.services2>
           <security>
             <x509 storeLocation="CurrentUser" allowTestRoot="true" useRFC3280="true" />
             <binarySecurityTokenManager valueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3">
               <sessionKeyAlgorithm name="TripleDES" />
               <keyAlgorithm name="RSA15" />
             </binarySecurityTokenManager>
             </security>
         </microsoft.web.services2>
       ...
       <configuration>

3. Set the element values as required:

Name | Meaning | Possible values
--- | --- | ---
verifyTrusy | Check sent/received x.509 certificate's validity. | True (default) False
sessionKeyAlgorithm | The algorithm the session symmetric key should use to encrypt the message. | AES128 AES192 AES256 TripleDES
keyAlgorithm | The algorithm to use by the public key to encrypt the session key. | RSA15 RSAOAEP
useRFC3280 | Generate subject key identifiers that are interoperable and not Windows specific. | True False (default)

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