SITG-CONSULTING
Cryptographic Transformation and Modernisation
A Gated, Evidence-Driven Programme for Enterprise Cryptographic Transformation
Most organisations know they must modernise cryptography.
Very few know how to do it safely, prove progress, manage vendor risk, and satisfy regulatory expectations at the same time.
The SITG-Consulting Cryptographic Transformation Implementation Model provides a structured framework for discovering, governing, transforming, and continuously assuring cryptographic estates at enterprise scale.
Why Cryptographic Transformation Matters
Quantum risk is only part of the problem. Most organisations already face challenges including: Unknown cryptographic assets Legacy certificates and keys Vendor dependency risk.
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Regulatory pressure. Lack of cryptographic visibility. Inability to prove control to auditors The greatest risk is often not the algorithm itself. It is the absence of governance, evidence, and operational control. The question is simple: Can your organisation identify, govern, and prove control of its cryptographic estate today?
The SITG Approach
The SITG model is built around one principle: If you cannot operate it and prove it, you do not control it.
Unlike traditional migration projects, this approach treats cryptographic transformation as a long-term business programme rather than a technology upgrade.
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The model combines:
Executive governance
Automated discovery
Risk-based prioritisation
Vendor assurance
Controlled transformation
Continuous operational evidence
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Every stage is supported by defined outputs and measurable evidence.
Six Levels of Transformation
Level 0
Executive Board View
Business mandate, funding, governance and accountability.
Level 3
Engineering Execution
Discovery, inventory, migration, interoperability and monitoring.
Level 1
Programme View
Discover, Control, Transform and Sustain.
Level 4
Operating Model
Transition from programme delivery to operational ownership.
Level 2
Governance Gates
Formal decision points that prevent uncontrolled progression.
Level 5
Continuous Evidence
Ongoing assurance, reporting and proof of control.
Governance Through Mandatory Gates
Many transformation programmes fail because they move forward without validated evidence.
The SITG model uses mandatory governance gates.
GATE 1
Business Case and Executive Mandate
GATE 2
CBOM and Risk Approval
GATE 3
Architecture Approval
GATE 4
Vendor and Supply Chain Readiness
GATE 5
Go-Live and Interoperability Validation
GATE 6
Operational Handover and Assurance
No gate progresses without evidence.
This creates accountability, transparency and measurable programme control.
Risk-Based Transformation
Every organisation starts from a different position. Some are already facing regulatory deadlines. Some have discovery data but no transformation plan. Others are already mid-transition.
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The SITG model adapts to each starting point while maintaining consistent governance and evidence requirements. Transformation is delivered through prioritised waves based on:
• Business criticality  Â
 • Data sensitivity      Â
 • Regulatory obligations
 • Operational exposureÂ
               • Long-term confidentiality requirements
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This allows organisations to focus first on the areas that carry the greatest risk.
Continuous Assurance Beyond Migration
Cryptographic transformation does not end when new algorithms are deployed. Long-term success requires:
• Continuous discoveryÂ
• Ongoing monitoring  Â
• Vendor reassessment
• Regulatory alignmentÂ
• Cryptographic agilityÂ
• Evidence productionÂ
The objective is not simply migration.The objective is establishing a sustainable cryptographic operating capability.