Enterprise-grade ISO 8583 payment engine & switch simulator built on Java 26 Virtual Threads & Spring Boot. Features dual TCP/REST with TLS/mTLS, EMV BER-TLV chip decoding (DE 55), ISO 9564 PIN translation, ANSI X9.24 DUKPT, Retail MAC, Dual-Message System (DMS) batch clearing & settlement reconciliation, and a live web control center.
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Updated
Aug 21, 2026 - Java