3.2 KiB
opencoin-issuer-cpp - a C++ OpenCoin Issuer REST-API implementation
opencoin issuer
this is a C++ implementation of the opencoin protocol done as mapping to some kind of REST interface.
As all issuer related interactions of the protocol follows a request/response mechanism we are able to map all of them to Http-Requests.
We decided to use POST-Requests in all cases, as the protocol uses JSON-formatted messages for requests.
The following table gives an overview of the mapping of requests to URLs:
| Request | URL | Response | C++ Interface Method |
|---|---|---|---|
| RequestCDDCSerial | /cddc/serial | ResponseCDDCSerial | cdd.cdd_serial of Model::get_current_cddc() |
| RequestCDDC | /cddc | ResponseCDDC | Model::get_current_cddc() |
| RequestMKCs | /mkcs | ResponseMKCs | Model::getMKCs |
| RequestMint | /mint | ResponseMint | Model::mint |
| RequestRenew | /renew | ResponseMint or ResponseDelay | ? |
| RequestResume | /resume | ResponseMint or ResponseDelay | ? |
| RequestRedeem | /redeem | ResponseRedeem | Model::redeem |
actually the implementation is a work in progress.
TODO
- select crypto library
- blinding utilizing crypto++
- integrate session and login to make transactions account based
- bookkeeping for accounts
Protocol Questions
- What is signed as cdd - only the content of the cdd item with curly braces or also the key?
- the weighted URL as array has a different js encoding as other elements
- Clarify PSS usage (see https://crypto.stackexchange.com/questions/12707/usability-of-padding-scheme-in-blinded-rsa-signature)
Blinding Notes
https://crypto.stackexchange.com/questions/54085/is-there-a-standard-padding-format-for-rsa-blind-signatures/60728#60728 https://crypto.stackexchange.com/questions/5626/rsa-blind-signatures-in-practice
https://cfrg.github.io/draft-irtf-cfrg-blind-signatures/draft-irtf-cfrg-rsa-blind-signatures.html
alternative implementation using openssl https://github.com/jedisct1/blind-rsa-signatures