4.4. Verification of Security Properties🔗

The formal proofs establish that the parser correctly enforces its configured limits:

• Nesting depth is checked on every recursive call

• String length is checked during scalar accumulation

• Collection sizes are checked during sequence/mapping construction

• Alias depth is bounded during resolution

Because the parser is written in pure Lean 4 with no unsafe FFI in the core, there is no possibility of buffer overflows, use-after-free, or other memory safety violations in the parsing logic. The Lean runtime provides automatic memory management via reference-counted garbage collection.