Introduction
Zdeněk Říha


Why do we need standards in IT Security?
lCompatibility/interoperability
lCommon terminology
lEfficiency/costs – no need to reinvent a wheel
lRegular updates/follow developments
l…
l
lSecurity

Disadvantages
lPaid standards
lTo cover the development of standards
lCompetition among the standardization bodies
lAccess to standards (and their drafts)
l+ difficult to understand
lReduced flexibility
lE.g. for small organizations

Coverage
lFrom high-level management
lISMS (information security management system)
lE.g. ISO 27000
l
lUp to low level crypto
lE.g. RSA, PKCS#1

Standards vs. norms
lStandards are recommendations
l
lNorms are authoritative (mandatory) standards
l
lNormativity depends on:
lCountry
lTime
lField/context
lType of company, personal use/business use

Standardization bodies
lISO
lNational SO
lÚřad pro technickou normalizaci, metrologii a státní zkušebnictví, ČSN
lUNMS SR (Slovakia)
lDIN (Germany)
lAFNOR (France)
lANSI (USA)
lCEN – European association
lCEN, CENELEC and ETSI - recognized as European Standards (ENs)
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Standardization bodies
lNIST: National Institute of Standards and Technology (USA)
lETSI European Telecommunications Standards Institute
lITU-T (e.g. X.509)
lIETF – RFC
l
lRSA Security (PKCS)
l

Process
lThe full list of status codes of ISO standards
lFocus on involvement of stakeholders, not on speed
lOften public consultations are needed

Versioning (ISO)



Versioning (RFCs)
lRSA Encryption
l
l RFC 2315
l
l RFC 2437
l
l RFC 3447
l
l RFC 8017

Versioning (NIST FIPS)
lDigital Signature Standard
lFIPS 186 (published May 1994)
lFIPS 186-1 (published Dec 1998)
lFIPS 186-2 (published Jan 2000)
lFIPS 186-3 (published Jun 2009)
lFIPS 186-4 (published Jul 2013)
lFIPS 186-5 (published Feb 2023)

Versioning
lPKCS#1 v1.5
lETSI TS 119 312 V1.4.2 (2022-02)
lITU-T X.509 Version/Edition