Verification (crypto:verify) does not remove CamelDigitalSignature header

[dms79]

Hello,
 
I'm using Camel 2.9.0 (Spring 3.0.6) with Java 1.6 on Tomcat 7. The following 
route successfully signs and verifies a message:
 
<route>
<from uri="direct:signMe"/>        
<to 
uri="crypto:sign://keystore?keystore=#signMe&amp;alias=signMe&amp;password=signMe"
 />
<log message="HEADER (SIGNATURE): ${headers}" />
<to uri="crypto:verify://keystore?keystore=#signMe&amp;alias=signMe" />
<log message="HEADER (VERIFICATION): ${headers}" />
<to uri="mock:result"/>
</route>  
 
However, the CamelDigitalSignature header is not removed after successful 
verification. Header after signature and after verification are completely 
identical. From looking at the clearMessageHeaders method in 
VerifyingProcessor, this header should be removed since this field is listed in 
DigitalSignatureProcessor, shouldn't it?
 
Regards, Dominik
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