Interactive Architectural Simulator
ISO 8583 PQC Handshake Latency & MTU Packet Estimator
Lattice-based cryptography introduces significant payload expansion. Use this calculator to model how NIST FIPS 203 (ML-KEM) and FIPS 204 (ML-DSA) handshakes traverse standard 1,500-byte TCP MTUs without causing packet fragmentation and sub-10ms authorization timeouts.
Simulation Parameters
Compresses certificate chain by approx. 40–55% to fit under single MTU.
5,000 TPS
Live Packet & Latency Analysis
Handshake Size
2,304 B
9.0× baseline
TCP Packets (MTU)
1 Packet
No Fragmentation
Handshake Delay
1.4 ms
Per TLS negotiation
Sub-10ms SLA Status
Within SLA
Safe for Authorizers
Optimal Hybrid Configuration:
Hybrid X25519MLKEM768 with RFC 8879 certificate compression stays within standard 1,500-byte MTU boundaries, maintaining low latency on high-throughput ISO 8583 switches.
