[tor-bugs] #5810 [Stem]: Implement verification of server descriptor

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#5810: Implement verification of server descriptor
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 Reporter:  reganeet     |          Owner:  reganeet
     Type:  enhancement  |         Status:  new     
 Priority:  normal       |      Milestone:          
Component:  Stem         |        Version:          
 Keywords:               |         Parent:          
   Points:               |   Actualpoints:          
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Comment(by reganeet):

 > Fantastic! Should we move forward with code reviewing and merging this
 part? It should probably have a unit test or two.
 Sure. Do you want me to write the unit tests?
 I've also renamed is_valid() to validate(), and instead of returning a
 boolean, it raises a ValueError if the validation fails, since we MUST
 perform this validation before accepting a descriptor. Do you think this
 makes sense?

 I cracked the Java crypto library code today, and printed out everything
 in the decryption process to find what was wrong. It seems that python-rsa
 uses a different way (maybe non-standard) to transform between octet
 strings and integers and incompatible with our signature. Things got much
 more subtle here, and I'm afraid I can't go on. If anyone else would like
 to continue this work, I'm more than happy to share what I've got with
 him.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5810#comment:5>
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