Foreword
1 Scope
2 Normative references
3 Definitions, symbols and abbreviations
  3.1 Definitions
      3.1.1 Terms defined in prEN 1546-1
      3.1.2 Terms specific to this part of EN 1546
  3.2 Symbols
  3.3 Abbreviations
  3.4 Special notation
4 Security Architecture
  4.1 Security requirements and characteristics
  4.2 Error handling
  4.3 Security relevant data elements
  4.4 Security procedures
      4.4.1 General notes
      4.4.2 Load (optional)
      4.4.3 Purchase
      4.4.4 Purchase Cancellation/IEP Balance Recovery
            (optional)
Annex A (informative) Additional security procedures
      A.1 IEP transactions
      A.2 SAM transactions
Annex B (informative) Security requirements and security
        mechanisms
Annex C (informative) Key Management
      C.1 General
      C.2 Key Management for symmetric algorithms
      C.3 Key Management for asymmetric algorithms
Annex D (informative) High-level overview of the Purchase
        transaction
Annex E (informative) Security protocols using DES
      E.1 Specific notes for DES
      E.2 Data elements specific for DES
      E.3 Security protocols
Annex F (informative) Security protocols using RSS/DSS
      F.1 Specific notes for RSA
      F.2 Specific notes for DSS
      F.3 Use of public key certificates in IEP Systems
      F.4 Data elements specific for RSA/DSS
      F.5 Implementation notes for RSA/DSS
      F.6 Security protocols
Annex G (informative) Purchase transaction using 3-step
        interactive Signatures
      G.1 Data elements
      G.2 Changes to subclause
      G.3 Specific notes for interactive Signatures
      G.4 Data elements specific to interactive Signatures
      G.5 Security protocols