What is the difference between a P2PE solution, component and application? A P2PE solution is a complete, validated set covering all 5 domains of the standard. A P2PE component is a carved-out service (such as key injection or decryption management) validated separately for use within other providers’ solutions. A P2PE application is software with access to clear-text card data, installed on an approved POI device.
Canonical definition: A P2PE component is a service covering a defined subset of PCI P2PE Standard requirements (including encryption, decryption or key management), delivered by a component provider to P2PE solution providers and listed by PCI SSC.
This article is written for providers: companies building their own P2PE solution, delivering services to other providers, or developing terminal software and wondering which validation route to take.
P2PE component, solution and application – key takeaways:
- The current PCI P2PE Standard v3.2 (Jun 2025) organises its requirements into 5 domains; a full solution must cover all of them, a component only its assigned subset.
- Version 3.0 of the standard (Dec 2019) doubled the component catalogue, adding 4 new types – PDCP, PMCP, KMCP and KLCP – alongside the earlier EMS, DMS, KIF and CA/RA (PCI SSC press release, P-ROV templates).
- Domain 3 (solution management) cannot be outsourced – the solution provider always owns it, even when everything else is delivered by components.
- A P2PE application can be assessed against Domain 2 within a solution’s validation, or separately with its own entry on the Validated P2PE Applications list – the standalone route pays off when the application serves multiple solutions.
- A third party performing P2PE functions always has two options: its own P-ROV and a PCI SSC listing, or being assessed within each customer’s audit separately.
- Patronusec, an accredited QSA, supports providers along the entire route: gap analysis, validation readiness, and choosing the optimal variant (solution, component or application).
Table of Contents
What is a P2PE solution?
A P2PE solution is a complete set of hardware, software, processes and services that encrypts card data inside an approved POI device and decrypts it in a secure environment, assessed against all 5 domains of the PCI P2PE Standard and published on the Validated P2PE Solutions list. A single entity – the solution provider – carries responsibility for the whole.
The PCI P2PE Standard (currently v3.2, Jun 2025) defines a solution provider as an entity in a third-party relationship with its merchant customers (for example a processor, acquirer or payment gateway) that holds overall responsibility for the design and implementation of a specific solution and for meeting all P2PE requirements – including those performed by third parties such as certification authorities or key-injection facilities. The exception is the MMS (Merchant-Managed Solution), where a merchant acts as its own solution provider for its own acceptance points; PCI SSC does not publish MMS listings.
The five domains define the scope of a full validation:
- Domain 1 – management of POI devices and their resident software,
- Domain 2 – security of applications with access to clear-text data,
- Domain 3 – solution management, third-party relationships and the PIM,
- Domain 4 – the decryption environment (including its PCI DSS compliance),
- Domain 5 – cryptographic key operations and SCD management; this domain’s requirements draw directly on the PCI PIN Security Requirements (currently v3.1, Mar 2021).
Domain 3 is the only domain that, under the PCI P2PE Standard, may not be handed to a third party or component provider – solution management must be performed by the solution provider itself.
The fix, in practical terms: even a company that outsources key injection, decryption and terminal management remains the owner of the risk. It signs the P-ROV, maintains the PIM for merchants, and answers to PCI SSC for the annual status attestation.
What is a P2PE component and what component types exist?
A P2PE component is a service covering a defined subset of the standard’s requirements, delivered to solution providers and validated in its own right, with an entry on the Validated P2PE Components list. A solution provider using a listed component reports a ready, pre-validated building block in its P-ROV instead of having it assessed from scratch.
The component model arrived with version 2.0 of the standard (Jun 2015), and P2PE v3.0 (Dec 2019) – per the PCI SSC press release – doubled the number of component provider types. The full set (per the P2PE Program Guide and PCI SSC P-ROV templates) is:
| Component type | Abbreviation | Example service scope |
|---|---|---|
| Encryption Management Services | EMS | Managing the POI device estate and its resident software (Domain 1) |
| Decryption Management Services | DMS | Operating the HSM-based decryption environment (Domain 4) |
| Key Injection Facility | KIF | Injecting cryptographic keys into terminals |
| Certification/Registration Authority | CA/RA | Certification authority operations for remote key distribution |
| Key Management Component Provider | KMCP | Carved-out key management operations (Domain 5) |
| Key Loading Component Provider | KLCP | Remote or local key loading into devices |
| POI Deployment Component Provider | PDCP | Terminal logistics and deployment to merchants |
| POI Management Component Provider | PMCP | Ongoing management of terminals in the field |
One technical detail worth knowing from the PCI SSC reporting template for key management services: an entity assessed as a component of a given type may not satisfy its own requirements using another listed component of the same type – for example, a KIF under assessment cannot meet its requirements by using another PCI-listed KIF.
The commercial logic of the component model works both ways. The solution provider assembles its product from pre-validated building blocks and shortens its own audit. The component provider, in turn, gains a position on the PCI SSC list that it can sell to many solution providers at once, instead of being re-assessed within every customer’s audit.
Patronusec Insight: In our project experience, companies serving P2PE providers often realise too late that they have a choice of route. The standard allows two options: their own P-ROV and a component listing, or repeated assessment within each customer’s audit. The second option looks cheaper with one customer, but with two or three solution providers the cost of multiple assessments and audit availability quickly exceeds the cost of a single component validation. It is worth calculating the break-even point before the second customer requests an audit.
Which activities qualify a company as a P2PE component or application provider?
A company becomes a candidate component provider when it performs, on behalf of a P2PE solution provider, any function covered by the standard’s requirements: from key injection, through terminal estate management, to operating a decryption environment. A P2PE application provider, in turn, is a producer of software with access to clear-text card data on a POI device.
Example activities that in practice fall under the respective roles:
- Key loading and management: generating BDK keys, injecting keys into terminals in a secured room (KIF), remote key distribution using asymmetric techniques (CA/RA, KLCP), storing key components and managing key custodians (KMCP).
- Terminal estate operations: configuring POI devices before dispatch, firmware and application updates, maintaining a system-build inventory, shipping and logistics of devices to merchants (EMS, PDCP, PMCP).
- Decryption: running the HSM-based environment where card data is decrypted and passed on for authorisation (DMS).
- Building terminal software: developing a payment application that reads card data, an SDK library that processes the PAN on a POI device, or an application printing the full PAN on receipts where the law requires it (P2PE application provider, Domain 2).
The boundary is access to clear-text data or cryptographic material. Here the standard distinguishes the P2PE application (access to clear-text card data, full Domain 2 assessment) from non-payment software (for example a loyalty application on the same terminal, with no data access) – the latter is subject only to requirements 1C-2 in Domain 1, which verify the absence of data interfaces and code signing under dual control.
Under the PCI P2PE Standard (v3.2), a P2PE application is any software or other files with access to clear-text account data, intended to be loaded onto a PCI-approved POI device and used as part of a P2PE solution.
The fix: if your product or service touches a clear-text PAN, SAD, or the keys protecting them in the P2PE chain, you are within the standard’s scope – the only question is in which role, and via which validation route.
What is a P2PE application and when does Domain 2 apply?
A P2PE application is software with access to clear-text card data, installed on an approved POI device as part of a P2PE solution. Every such application must be assessed against Domain 2 of the standard before entering a solution – regardless of whether the assessment happened separately or within the solution’s audit.
Requirement 1A-2 of the standard states that applications with clear-text data access not featured on the Validated P2PE Applications list must undergo a Domain 2 assessment within the solution’s validation. Domain 2 is demanding: it includes source code review, testing with forensic tools, verification that the application does not store the PAN after the transaction completes or SAD after authorisation, and that it uses only the data capture mechanisms validated under the device’s SRED approval.
An important note for software vendors: the P2PE Standard does not require a P2PE application to be validated to any other PCI standard. An assessment under PCI SSF (the Secure Software Standard) does not replace Domain 2 – these are separate programmes with different scopes. Terminal firmware approved within the PCI PTS evaluation is likewise not a P2PE application and is not re-assessed.
The application vendor’s mandatory artefact is the Implementation Guide: a document describing secure installation, configuration, logical interfaces, and key and certificate management rules. The solution provider must distribute the current version of this guide to any integrators and resellers it uses.
How does an application assessed within a solution differ from a standalone listing?
A P2PE application assessed within a solution is captured in a specific solution provider’s P-ROV and formally exists only in that context. A standalone-validated application passes the same Domain 2 assessment but receives its own entry on the Validated P2PE Applications list and can be used across multiple solutions.
The standard states directly that applications may be assessed and listed by PCI SSC “for example, if that application may be used in more than one P2PE solution”. The practical differences:
| Criterion | Application within a solution | Standalone application (listing) |
|---|---|---|
| Assessment scope | Domain 2 (full) | Domain 2 (full) – identical |
| Who commissions the assessment | The solution provider | The application vendor |
| PCI SSC listing | None (application appears in the solution’s P-ROV) | Yes, on the Validated P2PE Applications list |
| Use in another solution | Requires re-assessment in the next solution’s audit | The next provider references the listing (verifying name and version) |
| Vendor’s control over the process | Limited – depends on the customer’s schedule | Full – the vendor manages its own validation cycle |
| When it pays off | Application built for a single solution | Application sold to multiple solution providers |
An analogous mechanism governs change. Modifying a listed solution, component or application (for example adding a new terminal model or application version) requires the delta assessment process described in the P2PE Program Guide – the change is assessed, not the whole from scratch. The programme also runs a 3-year full revalidation cycle with an annual status attestation to PCI SSC (P2PE Program Guide). The current P2PE v3.x Program Guide dates from Sep 2024, and the v3.2 standard released in Jun 2025 does not invalidate validations performed against v3.0 or v3.1 (PCI SSC).
A decision tree for terminal software vendors:
- Does the application have access to clear-text card data (PAN/SAD) on the POI device?
- NO → it is non-payment software; only requirements 1C-2 apply, within the audit of whichever solution uses it.
- YES → go to question 2.
- Will the application be used in more than one P2PE solution (or sold to different providers)?
- YES → standalone validation and an entry on the Validated P2PE Applications list.
- NO → go to question 3.
- Do you want control over the validation schedule and a sales argument independent of any single customer?
- YES → go standalone despite the single solution – the listing will help win further customers.
- NO → assessment within the customer solution’s P-ROV is sufficient.
What does the validation and listing maintenance process look like?
The validation process runs the same way for a solution, a component and an application: a P2PE QSA performs the assessment, documents the result in a P-ROV using the mandatory PCI SSC template, and after the Council accepts the report, the entry appears on the relevant list. Only the requirement set and the report template differ.
A typical sequence from the provider’s perspective:
- Role classification – establishing whether you are validating a solution, a component (and of which type), or an application; this determines the requirement set and the P-ROV template.
- Gap analysis – comparing the current state against the assigned domains; this stage typically surfaces gaps such as HSMs without the required FIPS 140-2/140-3 Level 3 approvals or missing dual-control procedures for code signing.
- Remediation – implementing the missing controls; for the decryption environment this also means achieving the PCI DSS compliance (currently v4.0.1) that Domain 4 requires.
- P2PE QSA assessment – the audit proper: documentation review, testing, site visits (for example to the KIF), source code review for applications.
- PCI SSC acceptance and listing – the Council reviews the P-ROV; upon acceptance the solution, component or application joins the public list.
- Maintenance – annual status attestation, delta assessments for changes, full revalidation every 3 years; components additionally report status to their solution providers (requirements 1E, 4E and 5I of the standard).
Patronusec guides providers through the full PCI P2PE certification cycle – from role classification and gap analysis to readiness for the P2PE QSA assessment.
What do practitioners usually get wrong?
❌ Treating the device’s PTS approval as covering the software – the PCI PTS evaluation covers firmware, while any software added later with data access requires its own Domain 2 assessment.
❌ Attempting to outsource Domain 3 – solution management, third-party relationships and the PIM cannot be delegated to a component; the standard reserves this domain for the solution provider.
❌ Assuming an SSF or legacy PA-DSS validation replaces Domain 2 – the P2PE Standard does not recognise application validations from other PCI programmes; Domain 2 has its own, separate scope.
❌ Overlooking the PCI DSS compliance requirement for the decryption environment – Domain 4 demands maintained PCI DSS compliance in the decryption environment, often the single largest cost item of the entire project.
❌ Changing a validated solution without a delta assessment – adding a terminal model, an application version or a new KIF outside the delta process breaks the listing’s alignment with reality and exposes merchants to losing their SAQ P2PE eligibility.
❌ Confusing non-payment software with a P2PE application – a loyalty application without data access falls only under requirements 1C-2, but needs documented confirmation that it has no interfaces to clear-text data; a vendor’s declaration alone is not enough.
FAQ
Does a P2PE component provider have to be PCI DSS compliant?
It depends on the component type. A DMS provider operating a decryption environment must maintain PCI DSS compliance within it, because Domain 4 requires this. A KIF or CA/RA handles keys rather than card data, so its assessment centres on Domain 5, not PCI DSS.
How long does P2PE component validation take?
The timeline depends on the component type and the starting point. The P2PE QSA assessment itself usually takes weeks, but the full project (gap analysis, remediation, assessment, PCI SSC report acceptance) runs to months. Remediating physical and procedural key management controls typically consumes the most time.
Can one company be both a solution provider and a component provider?
Yes. A company can keep its own solution on the Validated P2PE Solutions list while offering a carved-out service (for example DMS or KIF) as a component to other providers. Each listing, however, requires its own P-ROV and its own maintenance cycle.
Does a standalone-listed P2PE application run on any terminal?
No. The application’s listing names the specific POI device types on which it was assessed. Requirement 1A-2.2 of the standard mandates deploying the application only on devices that are PCI PTS approved and explicitly included in that application’s Domain 2 assessment.
What happens when a listed component changes its service scope?
A change to a validated component goes through the delta assessment process described in the P2PE Program Guide. Components must also report changes to their solution providers: the standard requires this explicitly in requirements 1E, 4E and 5I, covering, among others, critical software updates and changes to device types.
Can a merchant build its own P2PE solution?
Yes, as a Merchant-Managed Solution (MMS). The merchant then takes on the solution provider’s duties for its own acceptance points and must additionally meet the separation requirements of Appendix A of the standard. PCI SSC does not publish MMS listings, and hybrid decryption is not permitted in an MMS.
How does Patronusec support providers in P2PE projects?
We begin with a free scope-assessment call: we classify the role (solution, component or application), identify the applicable requirement set and estimate the gaps. We then run the gap analysis and prepare you for the P2PE QSA assessment. After the scope assessment we present a fixed-price quote for the whole project.
Recommended reading
A reading path for providers building P2PE capability:
- P2PE (Point-to-Point Encryption): a guide to secure payment solutions – the foundation: P2PE from the architecture side.
- P2PE vs E2EE vs NESA – 3 approaches to payment encryption – market context: validation compared with the alternatives.
- PCI Secure Software Framework (SSF): a key standard for payment software security – how software validation works beyond the terminal.
- PCI DSS compliance: navigating the scope without confusion – useful for Domain 4 (decryption environment compliance).
- How much does PCI certification cost – the economics of formal assessments in the PCI ecosystem.
P2PE validation for providers – free consultation
Patronusec, an accredited QSA, supports providers of P2PE solutions, components and applications – from role classification to assessment readiness. Book a free scope-assessment call to establish your optimal validation route.
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