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Gerwin Klein 6c938f2a35 isabelle2021-1 riscv: Access 
Signed-off-by: Gerwin Klein <gerwin.klein@proofcraft.systems>
 		2022-03-29 08:38:25 +11:00
..
ARM isabelle2021-1 access: update Access session 2022-03-29 08:38:25 +11:00
RISCV64 isabelle2021-1 riscv: Access 2022-03-29 08:38:25 +11:00
ADT_AC.thy various: resolve some new fixmes 2021-11-12 09:39:16 +11:00
Access.thy various: resolve some new fixmes 2021-11-12 09:39:16 +11:00
Access_AC.thy various: resolve some new fixmes 2021-11-12 09:39:16 +11:00
Arch_AC.thy various: resolve some existing fixmes 2021-07-22 10:44:43 +10:00
CNode_AC.thy isabelle2021-1 riscv: Access 2022-03-29 08:38:25 +11:00
Deterministic_AC.thy access: Isabelle2020 update 2020-10-27 15:52:31 +10:00
DomainSepInv.thy riscv access: add proofs for DomainSepInv 2021-07-22 10:44:43 +10:00
Finalise_AC.thy various: resolve some new fixmes 2021-11-12 09:39:16 +11:00
Interrupt_AC.thy riscv access: add proofs for Interrupt_AC 2021-07-22 10:44:43 +10:00
Ipc_AC.thy various: resolve some new fixmes 2021-11-12 09:39:16 +11:00
README.md READMEs: fix publication links 2021-08-25 11:22:05 +10:00
Retype_AC.thy spec+proof: use generated config constants 2021-12-23 14:54:13 +11:00
Syscall_AC.thy infoflow+access: Syscall arch split 2021-10-05 08:46:11 +11:00
Tcb_AC.thy access: strengthen integrity_asids on RISCV64 2021-11-12 09:39:16 +11:00
Types.thy aspec+access: Access arch split 2021-06-21 20:10:32 +10:00

README.md

Access Control Proof

This proof establishes that seL4 enforces the security properties of authority confinement and integrity. These are essential correctness properties of its capability-based access control system: authority confinement means that authority propagates only in accordance with capabilities, and integrity means that data cannot be modified without possession of an appropriate write capability to the data. These properties and proofs are described in detail in an ITP 2011 paper. These properties are phrased over seL4's abstract specification and this proof builds on top of the Abstract Spec Invariant Proof.

Building

To build from the l4v/ directory, run:

./isabelle/bin/isabelle build -d . -v -b Access

Important Theories

The top-level theory where these two properties are proved for the kernel is Syscall_AC; the bottom-level theory where the properties are defined is Access.