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Task #1350

closed

ndn-tlv-poke: simple producer

Added by Junxiao Shi almost 11 years ago. Updated almost 11 years ago.

Status:
Closed
Priority:
Normal
Category:
Tools
Target version:
Start date:
Due date:
% Done:

100%

Estimated time:
2.00 h

Description

Develop a simple producer program that sends one Data.

ndn-tlv-poke [-f] [-D] [-i identity] [-F] [-x freshness] [-w timeout] ndn:/name
  Reads payload from stdin and sends it to local NDN forwarder as a single Data packet
  -f force, send Data without waiting for Interest
  -D use DigestSha256 signing method instead of SignatureSha256WithRsa
  -i specify identity used for signing
  -F set FinalBlockId to the last component of Name
  -x set FreshnessPeriod in milliseconds
  -w set timeout in milliseconds (default 10 seconds)

The payload (value of Content element) is read from stdin, put into a Data packet, and signed with the specified method.

If -D is present, signing method is DigestSha256.

If -D is absent, signing method is SignatureSha256WithRsa.

When signing method is SignatureSha256WithRsa, use the identity given in -i option.

If -i is absent, use the default identity.

When signing method is not SignatureSha256WithRsa, -i option is ignored.

If -f is absent, the program registers the exact name as a prefix, waits for one Interest, and sends Data.

If -f is present, the program sends the Data without waiting.

The program terminates with return code 0 if Data is sent, or terminates with return code 1 on timeout.

Timeout controls when program should terminate if -w is absent and no Interest arrives, and is unrelated to FreshnessPeriod.

Actions #1

Updated by Jerald Paul Abraham almost 11 years ago

  • Status changed from New to In Progress
Actions #2

Updated by Jerald Paul Abraham almost 11 years ago

Should I take signing method option as -D? The description mentions it as -H and -D at two places. I am also not clear on whats to be done for this -D option.

The ndn-cpp-dev library has this section in its signing method (key-chain.hpp):

// For temporary usage, we support RSA + SHA256 only, but will support more.
signPacketWrapper(packet, signature, 
                  IdentityCertificate::certificateNameToPublicKeyName(certificateName), 
                  DIGEST_ALGORITHM_SHA256);

Could you show an example or give an idea on whats different? And how this is to be coupled with the -k option case.

Also, I know how to sign with default identify. When a private key name is supplied via -k option, are the following steps correct:

1. Prepare a unsigned identity certificate:
   - Use the private key provided
   - Certificate name should be prefix name.
   - Leave certificate description blank
   - Set start and end date of certificate spaced away by some time (Ex: 20yrs)
2. Use this certificate to sign the data packet
Actions #3

Updated by Junxiao Shi almost 11 years ago

  • Description updated (diff)

-H is a typo. It should be -D.

-k is renamed to -i because identity name, not private key, should be specified.

@Yingdi Yu should answer how to use DigestSha256 signing method, and how to use non-default identity with SignatureSha256WithRsa signing method.

Actions #4

Updated by Jerald Paul Abraham almost 11 years ago

  • % Done changed from 0 to 90

Development is 90% Complete. Need to understand the signing process and add code for the same.

Awaiting response from @Yingdi Yu.

Actions #5

Updated by Jerald Paul Abraham almost 11 years ago

  • Status changed from In Progress to Code review
  • % Done changed from 90 to 100

I figured out the required signing functions. Please review them anyway.

Actions #6

Updated by Jerald Paul Abraham almost 11 years ago

  • Status changed from Code review to Closed
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