RFC 1898 (rfc1898) - Page 2 of 52

CyberCash Credit Card Protocol Version 0

RFC 1898                 CyberCash Version 0.8             February 1996


History

   For historic purposes, it should be noted that this document was
   first posted as an Internet draft, and thus made publicly available,
   on 8 July 1995.

Table of Contents

      1. Overall System..........................................3
      1.1 System Overview........................................3
      1.2 Security Approach......................................5
      1.2.1 Authentication and Persona Identity..................5
      1.2.2 Privacy..............................................6
      1.3 Credit Card Operation..................................6
      2. General Message Wrapper Format..........................7
      2.1 Message Format.........................................7
      2.2 Details of Format......................................8
      2.3 Body Parts.............................................8
      2.4 Transparent Part.......................................9
      2.5 Opaque Part...........................................10
      2.6 Trailer...............................................10
      2.7 Example Messages......................................11
      3. Signatures and Hashes..................................12
      3.1 Digital Signatures....................................12
      3.2 Hash Codes............................................13
      4. Specific Message Formats...............................13
      4.1 Persona Registration and Application Retrieval........14
      4.1.1 R1 - registration...................................14
      4.1.2 R2 - registration-response..........................15
      4.1.3 GA1 - get-application...............................16
      4.1.4 GA2 - get-application-response......................17
      4.2 Binding Credit Cards..................................18
      4.2.1 BC1 - bind-credit-card..............................18
      4.2.2 BC4 - bind-credit-card-response.....................20
      4.3 Customer Credit Card Purchasing Messages..............21
      4.3.1 PR1 - payment-request...............................21
      4.3.2 CH1 - credit-card-payment...........................23
      4.3.3 CH2 - charge-card-response..........................24
      4.4 Merchant Credit Card Purchasing Messages..............25
      4.4.1 CM1 - auth-only.....................................26
      4.4.2 CM2 - auth-capture..................................28
      3.4.3 CM3 - post-auth-capture.............................28
      4.4.4 CM4 - void..........................................30
      4.4.5 CM5 - return........................................32
      4.4.6 CM6 - charge-action-response........................32
      4.4.7 The MM* Message Series..............................34
      4.4.8 CD1 - card-data-request.............................35
      4.4.9 CD2 - card-data-response............................37



Eastlake, et al              Informational