Rec. ITU-T X.1404 (10/2020) Security assurance for distributed ledger technology Summary History FOREWORD Table of Contents 1 Scope 2 References 3 Definitions 3.1 Terms defined elsewhere 3.2 Terms defined in this Recommendation 4 Abbreviations and acronyms 5 Conventions 6 Overview of security assurance for DLT 6.1 Level of security assurance 6.2 Selecting the appropriate level of security assurance 7 DLT actors 8 Security assurance for DLT 8.1 Data integrity 8.2 Data confidentiality 8.3 Credential management 8.4 Identity proofing of user 8.5 Entity authentication 8.6 Access control 8.7 Data obfuscation 8.8 Consensus mechanism 8.9 Smart contract 8.10 Personally identifiable information (PII) data protections 9 Threats and capabilities related to DLT security assurance Annex A Mapping between threat items and security assurance components Bibliography