Internet-Draft                                                 M. Norton
Intended status: Informational                               Independent
Expires: January 20, 2027                                  July 20, 2026

                         
SDLP Physics Specification
                        
draft-norton-sdlp-phys-00

M. Norton
Independent
Email: mark433norton@gmail.com
July 2026

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Abstract

   The Secured Digital Lifecycle Protocol (SDLP) defines a physics layer
   for digital objects: a set of non-negotiable behavioral laws that
   govern identity stability, lineage integrity, lifecycle determinism,
   and irreversible state transitions. SDLP Physics establishes how
   object security depletes, transforms, or terminates as an object is
   activated, used, or shared, ensuring that each operation consumes or
   alters the object’s allowable state in predictable ways.

   These laws prevent cloning, enforce legitimate descent, bind objects
   to their environments, and guarantee that destruction and zeroization
   are final. This document specifies the core physics that underpin
   SDLP’s security model and define how digital objects behave across all
   environments and distribution paths.

This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.

Internet-Drafts are working documents of the Internet Engineering Task
Force (IETF), its areas, and its working groups. Note that other groups
may also distribute working documents as Internet-Drafts.

Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference material
or to cite them other than as "work in progress."

The list of current Internet-Drafts can be accessed at:
https://www.ietf.org/1id-abstracts.html

The list of Internet-Draft Shadow Directories can be accessed at:
https://www.ietf.org/shadow.html


Status of This Memo

   This Internet-Draft is being made available through the Independent
   Submission Stream. It is not a product of the Internet Engineering
   Task Force (IETF) and does not represent IETF consensus or IESG
   approval. It is published for informational purposes.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time. It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   Information about the current status of this document, any errata,
   and how to provide feedback may be obtained at the RFC Editor
   website.


Copyright Notice

   Copyright (c) 2026 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

.  Introduction
.  Terminology
.  SDLP Invariants (The Three Laws)
.  Deterministic Behavior Requirements
.  Identity Physics
.  Lifecycle Physics
.  Lineage Physics
.  Environment Physics
.  Cryptographic Physics
. Destruction Physics
. Security Considerations
. IANA Considerations
. References
. Author’s Address

.  Introduction

   The Secured Digital Lifecycle Protocol (SDLP) defines deterministic
   behavior for digital objects whose identity, lineage, and lifecycle
   evolve as they are activated, used, or shared. SDLP Physics specifies
   the non-negotiable laws that govern this behavior. These laws form the
   core of SDLP’s security model: object security depletes, transforms,
   or terminates as the object progresses through its lifecycle, ensuring
   that each use consumes or alters the object’s allowable state.

   SDLP Physics defines identity stability, transition legality, lineage
   integrity, environment validation requirements, cryptographic
   determinism, and irreversible destruction. These laws apply uniformly
   across all SDLP object classes and environments. They ensure that
   objects cannot be cloned, resurrected, or rolled back, and that
   descendant objects are produced only through legitimate, validated
   transitions.

   This document does not define identity structures, lifecycle models,
   lineage formats, or environment interfaces. Instead, it defines the
   physics that those models MUST obey. SDLP Physics provides the
   foundational enforcement layer upon which SDLP architecture, security
   mechanisms, and object specifications are built.

.  Terminology

   Physics
      The set of deterministic, non-negotiable laws governing SDLP object
      behavior, including identity stability, transition legality,
      lineage integrity, environment validation, and irreversible
      destruction.

   Invariant
      A rule that MUST hold true for all SDLP objects regardless of class,
      environment, or distribution model.

   Deterministic Transition
      A lifecycle transition whose outcome is fully defined by SDLP
      physics and cannot be altered by user intent, discretionary policy,
      or environmental variability.

   Illegal Transition
      A transition that violates SDLP physics and MUST be rejected by all
      compliant environments.

   Terminal State
      A lifecycle state from which an object cannot return, including
      destroyed, revoked, and expired.

   Zeroization
      The irreversible removal of sensitive material from an SDLP object,
      ensuring that the object cannot be rehydrated, resurrected, or
      reinstantiated.

   Identity Stability
      The property that an SDLP object’s identity MUST NOT change after
      issuance and MUST NOT be duplicated through copying or replication.

   Lineage Integrity
      The requirement that lineage MUST be complete, immutable, and
      append-only, with each descendant object inheriting and extending
      the lineage of its parent.

   Environment Binding
      The association between an SDLP object and the environment signals
      required to validate identity, lineage, lifecycle state, and
      transition legality.

.  SDLP Invariants (The Three Laws)

   SDLP Physics defines three fundamental invariants that govern all SDLP
   object behavior. These invariants apply uniformly across all object
   classes, environments, and distribution paths. They form the core
   enforcement layer that ensures identity stability, transition
   determinism, lineage integrity, and irreversible destruction.

   These laws are non-negotiable. No SDLP-compliant environment may
   override, bypass, or weaken them. All lifecycle transitions, lineage
   updates, environment validations, and cryptographic operations MUST
   conform to these invariants.

3.1 Identity Integrity

   An SDLP object’s identity MUST be unique, immutable, and non-clonable.
   Identity MUST NOT change after issuance, and copying the object’s
   bytes MUST NOT produce a second valid identity. Identity MUST bind to
   the object’s lineage root, lifecycle state, and environment of
   issuance. All transitions MUST validate identity before proceeding.

3.2 Transition Integrity

   All SDLP lifecycle transitions MUST be deterministic, validated, and
   authorized. A transition’s outcome MUST be fully defined by SDLP
   physics and MUST NOT depend on user intent, discretionary policy, or
   environmental variability. Illegal transitions—including unauthorized
   activation, unauthorized copying, resurrection, rollback, and
   rehydration—MUST be rejected by all compliant environments.

3.3 Lineage Integrity

   SDLP lineage MUST be complete, immutable, and append-only. Each
   descendant object MUST inherit the lineage of its parent and append a
   new lineage entry reflecting the transition that produced it. Lineage
   MUST NOT be truncated, rewritten, or replaced. All environments MUST
   validate lineage before permitting any lifecycle transition.

.  Deterministic Behavior Requirements

   SDLP Physics requires that all object behavior be deterministic. Every
   transition, lineage update, validation step, and cryptographic
   operation MUST produce predictable, reproducible results across all
   compliant environments. Determinism ensures that object security
   depletes, transforms, or terminates in a controlled and verifiable
   manner as the object is activated, used, or shared.

4.1 Deterministic Encoding

   SDLP objects MUST use canonical encodings. The same object, when
   serialized, MUST produce identical byte sequences across all
   environments. Canonical encoding ensures stable hashing, consistent
   lineage updates, and predictable transition outcomes.

4.2 Deterministic Hashing

   Hash operations performed on SDLP objects MUST be deterministic.
   Identical inputs MUST produce identical outputs across all compliant
   environments. Hash determinism is required for tamper detection,
   lineage integrity, and identity stability.

4.3 Deterministic Signatures

   Digital signatures applied to SDLP objects MUST be verifiable across
   all compliant environments. Signature generation and verification MUST
   be deterministic, ensuring that identity, lineage, and lifecycle state
   are bound consistently and cannot be forged or replayed.

4.4 Deterministic Lineage Updates

   Lineage updates MUST be deterministic and append-only. Given the same
   object state and transition type, all compliant environments MUST
   produce identical lineage entries. Deterministic lineage updates
   ensure that descendant objects reflect legitimate transitions and that
   lineage cannot be rewritten, truncated, or replaced.

4.5 Deterministic Transition Outcomes

   All lifecycle transitions MUST produce deterministic results. A
   transition’s outcome MUST be defined solely by SDLP physics and MUST
   NOT depend on user intent, discretionary policy, or environmental
   variability. Deterministic transitions ensure that object security
   depletes or terminates in predictable ways as the object is used or
   shared.

.  Identity Physics

   SDLP Physics defines the laws governing identity behavior for all SDLP
   objects. Identity is the foundation of object security: it determines
   how an object is recognized, validated, and constrained as it is
   activated, used, or shared. Identity MUST remain stable, MUST NOT be
   clonable, and MUST bind to the object’s lineage, lifecycle state, and
   environment of issuance.

   Identity physics ensures that object security depletes or transforms
   predictably as the object progresses through its lifecycle. Identity
   stability prevents unauthorized duplication, while identity binding
   ensures that transitions and lineage updates reflect legitimate,
   validated behavior.

5.1 Identity Stability

   An SDLP object’s identity MUST be immutable after issuance. Identity
   MUST NOT change as the object transitions through its lifecycle, and
   identity MUST NOT be replaced, rewritten, or reissued. Identity
   stability ensures that object behavior remains predictable and that
   lineage and lifecycle constraints remain enforceable.

5.2 Identity Non-Clonability

   Copying an SDLP object’s bytes MUST NOT produce a second valid
   identity. Identity MUST be bound to the object’s lineage root,
   environment of issuance, and lifecycle state in a manner that prevents
   duplication or replication. Non-clonability ensures that object
   security depletes or terminates as the object is used or shared,
   rather than being reset or multiplied through copying.

5.3 Identity Binding

   Identity MUST bind to the object’s lineage, lifecycle state, and
   environment. This binding ensures that identity validation reflects
   the object’s complete history and current state. Identity binding MUST
   be cryptographically verifiable and MUST remain stable across all
   compliant environments.

5.4 Identity Validation Physics

   Identity MUST be validated before any lifecycle transition. Validation
   MUST confirm identity stability, lineage integrity, and environment
   binding. If identity validation fails, the transition MUST be rejected
   and the object MUST NOT proceed. Identity validation ensures that
   illegal transitions—including unauthorized activation, copying,
   transformation, resurrection, rollback, or rehydration—are prevented
   by physics rather than policy.

.  Lifecycle Physics

   SDLP Physics defines the laws governing lifecycle behavior for all SDLP
   objects. Lifecycle transitions represent the ways an object may be
   activated, used, shared, transformed, or terminated. Each transition
   consumes, alters, or depletes the object’s allowable state in
   predictable ways. Lifecycle physics ensures that transitions are
   legitimate, deterministic, and irreversible when required.

   All lifecycle transitions MUST conform to SDLP invariants. Illegal
   transitions—including unauthorized activation, unauthorized copying,
   resurrection, rollback, and rehydration—MUST be rejected by all
   compliant environments. Lifecycle physics ensures that object security
   cannot be reset, duplicated, or bypassed through manipulation of state
   or environment.

6.1 Legal Transitions

   SDLP objects MAY undergo the following legal transitions, subject to
   identity validation, lineage verification, and environment binding:

      * Activation
      * Copy (when permitted by object class)
      * Transformation
      * Sealing
      * Destruction

   Each legal transition MUST be deterministic and MUST produce a
   predictable change in the object’s lifecycle state. Legal transitions
   MUST update lineage in an append-only manner and MUST preserve identity
   stability.

6.2 Illegal Transitions

   Illegal transitions violate SDLP Physics and MUST be rejected by all
   compliant environments. Illegal transitions include:

      * Unauthorized activation
      * Unauthorized copying
      * Unauthorized transformation
      * Resurrection of a destroyed object
      * Rehydration of zeroized material
      * Rollback to a prior lifecycle state
      * Any transition that bypasses identity or lineage validation

   Illegal transitions MUST NOT produce descendants, MUST NOT alter
   lineage, and MUST NOT modify lifecycle state. Environments MUST treat
   illegal transitions as terminal failures.

6.3 Terminal States

   Terminal states represent lifecycle conditions from which an object
   cannot return. Terminal states include:

      * Destroyed
      * Revoked
      * Expired

   Once an object enters a terminal state, it MUST NOT be reactivated,
   transformed, copied, or used. Terminal states ensure that object
   security terminates predictably and irreversibly when required.

6.4 Zeroization Physics

   Zeroization is the irreversible removal of sensitive material from an
   SDLP object. Zeroization MUST occur during destruction and MAY occur
   during other terminal transitions. Zeroization MUST ensure that:

      * Sensitive material is irrecoverable.
      * The object cannot be rehydrated, resurrected, or reinstantiated.
      * Identity and lineage bindings cannot be reconstructed.
      * Cryptographic material cannot be extracted or replayed.

   Zeroization physics guarantees that destruction is final and that
   object security cannot be restored or duplicated after termination.

.  Lineage Physics

   SDLP Physics defines the laws governing lineage behavior for all SDLP
   objects. Lineage represents the complete, immutable history of an
   object’s transitions from its root identity through all descendants.
   Lineage MUST remain stable, append-only, and cryptographically
   verifiable across all compliant environments.

   Lineage physics ensures that descendant objects reflect legitimate,
   validated transitions and that object security depletes or transforms
   predictably as the object is activated, used, or shared. Lineage MUST
   NOT be rewritten, truncated, replaced, or bypassed. All lifecycle
   transitions MUST validate lineage before proceeding.

7.1 Immutable Ancestry

   SDLP lineage MUST be immutable. Once a lineage entry is created, it
   MUST NOT be modified, removed, or replaced. Immutable ancestry ensures
   that an object’s complete history remains verifiable and that no
   environment can conceal, alter, or rewrite past transitions.

   Immutable ancestry also ensures that identity stability and lifecycle
   determinism remain enforceable across all environments and distribution
   paths.

7.2 Descendant Rules

   Descendant objects MUST inherit the complete lineage of their parent
   and MUST append a new lineage entry reflecting the transition that
   produced them. Descendants MUST receive new identities that bind to
   the updated lineage and lifecycle state.

   Descendants MUST NOT be produced through illegal transitions,
   including unauthorized activation, unauthorized copying, resurrection,
   rollback, or rehydration. Environments MUST reject any transition that
   attempts to produce a descendant without valid lineage inheritance.

7.3 Transformation Physics

   Transformations MUST produce legitimate descendants whose lineage
   reflects the transformation event. Transformation physics ensures that
   object behavior remains deterministic and that lineage accurately
   represents the object’s evolution.

   Transformations MUST:
      * Preserve identity stability.
      * Append a new lineage entry.
      * Update lifecycle state deterministically.
      * Bind the new identity to the updated lineage and environment.

   Transformations MUST NOT bypass lineage validation or produce
   descendants that conceal or omit prior transitions.

7.4 Copying Physics

   Copying behavior is governed by object class and MUST conform to SDLP
   Physics. Copying MUST produce one of the following outcomes:

      * For identity-bound objects:
           Copying MUST NOT produce a functional duplicate. The copied
           bytes MUST NOT yield a valid identity, and the resulting object
           MUST NOT be usable, activatable, or transformable.

      * For copy-permitted objects:
           Copying MUST produce a legitimate descendant with a new
           identity and an appended lineage entry reflecting the copy
           transition.

   Copying MUST NOT reset object security, bypass lineage, or produce
   multiple objects with identical identities. Copying physics ensures
   that object security depletes or transforms predictably as objects are
   shared or duplicated.

.  Environment Physics

   SDLP Physics defines the laws governing how environments validate,
   execute, and enforce SDLP object behavior. Environments provide the
   signals required to confirm identity stability, lineage integrity,
   lifecycle state, and transition legality. Environment physics ensures
   that object security depletes, transforms, or terminates predictably
   as the object is activated, used, or shared.

   Environments MUST enforce SDLP invariants and MUST reject any object
   or transition that violates identity, lineage, lifecycle, or
   cryptographic requirements. Environment physics ensures that SDLP
   objects behave consistently across all compliant implementations,
   regardless of platform, distribution path, or execution context.

8.1 Trusted Execution Signals

   Environments MUST provide trusted, verifiable signals required to
   validate SDLP object behavior. These signals include:

      * Identity validation signals
      * Lineage verification signals
      * Lifecycle state verification signals
      * Time and monotonicity signals
      * Cryptographic verification signals

   Trusted execution signals MUST be resistant to tampering, replay,
   rollback, and forgery. Environments MUST NOT permit transitions when
   trusted signals are missing, invalid, or unverifiable.

8.2 Validation Physics

   Before permitting any lifecycle transition, environments MUST validate:

      * Identity stability
      * Lineage integrity
      * Lifecycle state consistency
      * Environment binding
      * Cryptographic signatures and hashes
      * Transition legality

   Validation MUST be deterministic and MUST produce identical results
   across all compliant environments. If validation fails, the transition
   MUST be rejected and MUST NOT produce descendants or modify object
   state.

8.3 Rejection Physics

   Environments MUST reject objects and transitions that violate SDLP
   Physics. Rejection MUST occur when:

      * Identity is invalid, duplicated, or unverifiable.
      * Lineage is incomplete, truncated, rewritten, or inconsistent.
      * Lifecycle state is illegal or inconsistent.
      * Transition type is unauthorized or illegal.
      * Cryptographic material fails verification.
      * Time signals are inconsistent or non-monotonic.
      * Environment binding cannot be confirmed.

   Rejection MUST be deterministic and MUST NOT permit partial or
   incomplete transitions. Rejected transitions MUST NOT produce
   descendants or alter lineage.

8.4 Time Physics

   Environments MUST provide time signals that are:

      * Monotonic
      * Tamper-evident
      * Consistent across transitions
      * Resistant to rollback and replay

   Time physics ensures that lifecycle transitions occur in a predictable
   order and that lineage entries reflect accurate temporal progression.
   Non-monotonic or manipulated time signals MUST cause transitions to be
   rejected.

   Time physics prevents resurrection, rollback, rehydration, and other
   illegal transitions that depend on manipulating temporal state.

.  Cryptographic Physics

   SDLP Physics defines the cryptographic laws governing identity,
   lineage, lifecycle, and environment validation. Cryptographic
   operations MUST be deterministic, verifiable, and resistant to
   tampering, replay, rollback, and forgery. Cryptographic physics
   ensures that object security depletes, transforms, or terminates
   predictably as the object is activated, used, or shared.

   All cryptographic material associated with an SDLP object MUST bind to
   identity, lineage, lifecycle state, and environment signals. Binding
   MUST be stable, irreversible when required, and verifiable across all
   compliant environments.

9.1 Deterministic Hashing

   Hash operations performed on SDLP objects MUST be deterministic.
   Identical inputs MUST produce identical outputs across all compliant
   environments. Hash determinism is required for:

      * Identity stability
      * Lineage integrity
      * Transition validation
      * Tamper detection
      * Environment binding

   Hashes MUST NOT depend on non-deterministic inputs such as local
   randomness, environment-specific metadata, or non-canonical encoding.

9.2 Deterministic Signatures

   Digital signatures applied to SDLP objects MUST be deterministic and
   verifiable across all compliant environments. Signature physics
   ensures that identity, lineage, and lifecycle state are bound
   consistently and cannot be forged or replayed.

   Signature verification MUST fail when:

      * Identity is duplicated or unverifiable.
      * Lineage is incomplete or inconsistent.
      * Lifecycle state is illegal or non-monotonic.
      * Environment signals are missing or invalid.

9.3 Binding Physics

   Cryptographic material MUST bind to:

      * Identity
      * Lineage
      * Lifecycle state
      * Environment signals
      * Time physics

   Binding MUST be stable and MUST NOT permit re-binding to alternate
   identities, lineage roots, or lifecycle states. Binding physics
   ensures that object security cannot be reset, duplicated, or bypassed
   through manipulation of cryptographic material.

9.4 Cryptographic Determinism

   All cryptographic operations MUST be deterministic. Deterministic
   cryptography ensures that:

      * Transitions produce predictable results.
      * Lineage updates remain consistent.
      * Identity validation behaves uniformly across environments.
      * Illegal transitions cannot exploit cryptographic variability.

   Non-deterministic cryptographic behavior MUST cause transitions to be
   rejected.

9.5 Cryptographic Zeroization

   Cryptographic zeroization is the irreversible destruction of
   cryptographic material associated with an SDLP object. Zeroization
   MUST ensure that:

      * Sensitive material is irrecoverable.
      * Identity and lineage bindings cannot be reconstructed.
      * Signatures and hashes cannot be replayed or revalidated.
      * The object cannot be resurrected, rehydrated, or reinstantiated.

   Cryptographic zeroization MUST occur during destruction and MAY occur
   during other terminal transitions. Zeroization physics guarantees that
   cryptographic termination is final and that object security cannot be
   restored after termination.

.  Destruction Physics

   SDLP Physics defines the laws governing destruction behavior for all
   SDLP objects. Destruction represents the irreversible termination of an
   object’s lifecycle, identity, lineage, and cryptographic material.
   Destruction MUST be final, MUST be deterministic, and MUST prevent any
   form of resurrection, rollback, or rehydration.

   Destruction physics ensures that object security terminates in a
   predictable and verifiable manner. Once destruction occurs, the object
   MUST NOT be activated, transformed, copied, or used. All environments
   MUST enforce destruction physics uniformly and MUST reject any attempt
   to interact with a destroyed object.

10.1 Irreversible Termination

   Destruction MUST irreversibly terminate the object’s lifecycle. After
   destruction:

      * The object MUST enter a terminal state.
      * The object MUST NOT transition to any other lifecycle state.
      * The object MUST NOT produce descendants.
      * The object MUST NOT be reactivated or reused.

   Irreversible termination ensures that object security cannot be reset,
   bypassed, or restored through manipulation of state or environment.

10.2 Destruction Preconditions

   Before destruction may occur, environments MUST validate:

      * Identity stability
      * Lineage integrity
      * Lifecycle state consistency
      * Environment binding
      * Cryptographic signatures and hashes

   If validation fails, destruction MUST NOT proceed. Destruction MUST
   only occur when the object is in a valid, consistent state.

10.3 Lineage Finalization

   Destruction MUST append a final lineage entry reflecting the
   destruction event. This entry MUST:

      * Identify the destruction transition.
      * Bind to the object’s final lifecycle state.
      * Bind to environment and time signals.
      * Be immutable and verifiable across all environments.

   Lineage finalization ensures that destruction is recorded as part of
   the object’s permanent history and that no environment can conceal or
   rewrite the termination event.

10.4 Zeroization Requirements

   Destruction MUST perform zeroization of sensitive material. Zeroization
   MUST ensure that:

      * Cryptographic material is irrecoverable.
      * Identity and lineage bindings cannot be reconstructed.
      * Signatures and hashes cannot be replayed.
      * The object cannot be resurrected, rehydrated, or reinstantiated.

   Zeroization MUST be deterministic and MUST produce identical results
   across all compliant environments.

10.5 Post-Destruction Behavior

   After destruction:

      * The object MUST NOT respond to activation attempts.
      * The object MUST NOT validate identity or lineage.
      * The object MUST NOT permit copying or transformation.
      * The object MUST NOT produce descendants.
      * The object MUST NOT accept environment signals.

   Environments MUST treat destroyed objects as inert and MUST reject any
   transition or operation involving them.

10.6 Resurrection Prohibition

   Resurrection of a destroyed object is strictly prohibited. Environments
   MUST reject any attempt to:

      * Rehydrate zeroized material.
      * Restore prior lifecycle states.
      * Replay lineage entries.
      * Reconstruct identity or cryptographic bindings.

   Resurrection prohibition ensures that destruction is final and that
   object security cannot be restored or duplicated after termination.

.  Security Considerations

   SDLP Physics defines the foundational security properties that govern
   identity, lineage, lifecycle, environment validation, and destruction.
   These properties ensure that SDLP objects behave predictably and
   securely across all compliant environments. Security considerations
   describe the threats addressed by SDLP Physics and the requirements
   environments MUST enforce to maintain object security.

11.1 Threat Model

   SDLP Physics is designed to mitigate the following classes of threats:

      * Identity duplication or forgery
      * Lineage rewriting, truncation, or concealment
      * Unauthorized activation or transformation
      * Unauthorized copying or replication
      * Resurrection or rollback of destroyed objects
      * Rehydration of zeroized material
      * Manipulation of environment signals
      * Cryptographic replay or forgery
      * Temporal manipulation or non-monotonic time behavior

   SDLP Physics ensures that object security depletes, transforms, or
   terminates predictably as the object is activated, used, or shared.

11.2 Enforcement Requirements

   Environments MUST enforce all SDLP invariants and MUST reject any
   transition or operation that violates identity, lineage, lifecycle,
   environment, or cryptographic physics. Enforcement requirements
   include:

      * Validating identity stability
      * Verifying lineage integrity
      * Confirming lifecycle state consistency
      * Ensuring environment binding
      * Enforcing deterministic transitions
      * Rejecting illegal transitions
      * Maintaining monotonic time signals
      * Performing irreversible zeroization during destruction

   Failure to enforce these requirements compromises SDLP object
   security and MUST be treated as a critical implementation error.

11.3 Illegal Transition Handling

   Illegal transitions—including unauthorized activation, unauthorized
   copying, resurrection, rollback, and rehydration—MUST be rejected
   deterministically. Illegal transitions MUST NOT:

      * Modify object state
      * Produce descendants
      * Alter lineage
      * Update lifecycle state
      * Consume or reset object security

   Environments MUST treat illegal transitions as terminal failures.

11.4 Replay and Forgery Resistance

   SDLP Physics requires deterministic cryptographic operations to
   prevent replay and forgery. Environments MUST reject:

      * Replayed signatures
      * Replayed lineage entries
      * Replayed environment signals
      * Replayed time signals
      * Replayed lifecycle states

   Replay resistance ensures that object security cannot be bypassed
   through duplication or temporal manipulation.

11.5 Destruction and Zeroization Security

   Destruction MUST be irreversible. Zeroization MUST ensure that:

      * Sensitive material cannot be recovered
      * Identity cannot be reconstructed
      * Lineage cannot be replayed
      * Cryptographic bindings cannot be restored
      * The object cannot be resurrected or rehydrated

   Destruction physics ensures that termination is final and that object
   security cannot be restored after termination.

11.6 Environment Trust and Isolation

   Environments MUST provide trusted execution signals and MUST isolate
   SDLP object processing from untrusted components. Environments MUST
   prevent:

      * Tampering with validation signals
      * Manipulation of time physics
      * Interference with lineage updates
      * Unauthorized access to cryptographic material

   Environment trust ensures that SDLP Physics remains enforceable across
   all compliant implementations.

11.7 Interoperability Considerations

   All compliant environments MUST enforce SDLP Physics uniformly. If an
   environment fails to enforce physics, objects processed within that
   environment MUST be treated as untrusted. Interoperability requires:

      * Consistent validation behavior
      * Deterministic transition outcomes
      * Stable identity and lineage bindings
      * Uniform destruction and zeroization semantics

   Environments that do not enforce SDLP Physics MUST NOT participate in
   SDLP object processing.

.  IANA Considerations

   This document has no IANA actions.

   No registries are created or modified by this document, and no
   protocol parameters require assignment or review by IANA.

.  References

13.1  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119.

   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174,
              DOI 10.17487/RFC8174.

13.2  Informative References

   [SDLP-ARCH] Norton, M., "Secured Digital Lifecycle Protocol (SDLP)
              Architecture", Work in Progress.

   [SDLP-ID]   Norton, M., "Secured Digital Lifecycle Protocol (SDLP)
              Identity Specification", Work in Progress.

   [SDLP-LINEAGE]
              Norton, M., "Secured Digital Lifecycle Protocol (SDLP)
              Lineage Specification", Work in Progress.

   [SDLP-OBJ]  Norton, M., "Secured Digital Lifecycle Protocol (SDLP)
              Object Format", Work in Progress.


.  Author’s Address

   M. Norton
   Independent Submission
   El Mirage, Arizona, USA

   Email: mark433norton@gmail.com