Java Doc for SMIMECheckSignature.java in  » Net » james-2.3.1 » org » apache » james » transport » mailets » smime » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » james 2.3.1 » org.apache.james.transport.mailets.smime 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.mailet.GenericMailet
      org.apache.james.transport.mailets.smime.SMIMECheckSignature

SMIMECheckSignature
public class SMIMECheckSignature extends GenericMailet (Code)

Verifies the s/mime signature of a message. The s/mime signing ensure that the private key owner is the real sender of the message. To be checked by this mailet the s/mime signature must contain the actual signature, the signer's certificate and optionally a set of certificate that can be used to create a chain of trust that starts from the signer's certificate and leads to a known trusted certificate.

This check is composed by two steps: firstly it's ensured that the signature is valid, then it's checked if a chain of trust starting from the signer certificate and that leads to a trusted certificate can be created. The first check verifies that the the message has not been modified after the signature was put and that the signer's certificate was valid at the time of the signing. The latter should ensure that the signer is who he declare to be.

The results of the checks perfomed by this mailet are wrote as a mail attribute which default name is org.apache.james.SMIMECheckSignature (it can be changed using the mailet parameter mailAttribute). After the check this attribute will contain a list of SMIMESignerInfo object, one for each message's signer. These objects contain the signer's certificate and the trust path.

Optionally, specifying the parameter strip, the signature of the message can be stripped after the check. The message will become a standard message without an attached s/mime signature.

The configuration parameter of this mailet are summerized below. The firsts defines the location, the format and the password of the keystore containing the certificates that are considered trusted. Note: only the trusted certificate entries are read, the key ones are not.

  • keyStoreType (default: jks): Certificate store format . "jks" is the standard java certificate store format, but pkcs12 is also quite common and compatible with standard email clients like Outlook Express and Thunderbird.
  • keyStoreFileName (default: JAVA_HOME/jre/lib/security/cacert): Certificate store path.
  • keyStorePassword (default: ""): Certificate store password.
Other parameters configure the behavior of the mailet:
  • strip (default: false): Defines if the s/mime signature of the message have to be stripped after the check or not. Possible values are true and false.
  • mailAttribute (default: org.apache.james.SMIMECheckSignature): specifies in which attribute the check results will be written.
  • onlyTrusted (default: true): Usually a message signature to be considered by this mailet as authentic must be valid and trusted. Setting this mailet parameter to "false" the last condition is relaxed and also "untrusted" signature are considered will be considered as authentic.



Field Summary
protected  StringmailAttribute
    
protected  booleanonlyTrusted
    
protected  booleanstripSignature
    
protected  KeyStoreHoldertrustedCertificateStore
    

Constructor Summary
public  SMIMECheckSignature()
    

Method Summary
public  voidinit()
    
public  voidservice(Mail mail)
    

Field Detail
mailAttribute
protected String mailAttribute(Code)



onlyTrusted
protected boolean onlyTrusted(Code)



stripSignature
protected boolean stripSignature(Code)



trustedCertificateStore
protected KeyStoreHolder trustedCertificateStore(Code)




Constructor Detail
SMIMECheckSignature
public SMIMECheckSignature()(Code)




Method Detail
init
public void init() throws MessagingException(Code)



service
public void service(Mail mail) throws MessagingException(Code)

See Also:   org.apache.mailet.Matcher.match(org.apache.mailet.Mail)



Methods inherited from org.apache.mailet.GenericMailet
public void destroy()(Code)(Java Doc)
public String getInitParameter(String name)(Code)(Java Doc)
public String getInitParameter(String name, String defValue)(Code)(Java Doc)
public Iterator getInitParameterNames()(Code)(Java Doc)
public MailetConfig getMailetConfig()(Code)(Java Doc)
public MailetContext getMailetContext()(Code)(Java Doc)
public String getMailetInfo()(Code)(Java Doc)
public String getMailetName()(Code)(Java Doc)
public void init(MailetConfig newConfig) throws MessagingException(Code)(Java Doc)
public void init() throws MessagingException(Code)(Java Doc)
public void log(String message)(Code)(Java Doc)
public void log(String message, Throwable t)(Code)(Java Doc)
abstract public void service(Mail mail) throws javax.mail.MessagingException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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