payments · knowledge base

信用卡与支付报文学习专栏Credit Card & Payment Messaging

从信用卡基础到 ISO 8583 / EMV 报文实战。免费文章帮你入门,进阶专题(报文逐字段拆解、拒付排查、清算对账实务)开放订阅。From credit-card fundamentals to hands-on ISO 8583 / EMV message parsing. Free articles get you started; advanced deep-dives (field-by-field decoding, decline troubleshooting, clearing & reconciliation) are available to subscribers.

信用卡是怎么运作的?四方模型入门How Credit Cards Work: The Four-Party Model

持卡人、商户、发卡行、收单行,再加上卡组织——一笔刷卡背后有哪些角色、钱怎么流动。Cardholder, merchant, issuer, acquirer — plus the card network. Who's involved in a swipe and how the money moves.

Freebasicsfour-party

一笔交易的完整生命周期:授权 → 清算 → 结算The Transaction Lifecycle: Authorization → Clearing → Settlement

授权、请款、清算、结算、退款与拒付,一次讲清它们的区别。Authorization, capture, clearing, settlement, refunds and chargebacks — the differences, explained once and for all.

Freebasicssettlement

看懂 ISO 8583 报文:MTI、位图、数据域Reading ISO 8583: MTI, Bitmaps & Data Elements

支付行业的通用语言。MTI 是什么、位图怎么读、128 个数据域干嘛——配合本站工具边读边练。The lingua franca of card payments. What an MTI is, how to read the bitmap, what the 128 data elements do — practise with the parser on this site.

FreeISO8583message

EMV 芯片交易与 DE55 深入:ARQC / TVR / CVMEMV Chip & DE55 Deep Dive: ARQC / TVR / CVM

芯片卡凭什么更安全?DE55 里 EMV TLV 每个标签什么意思、ARQC 密文怎么来、TVR/CVM 如何影响授权。Why chip cards are safer, what each EMV TLV tag in DE55 means, how the ARQC cryptogram is generated, and how TVR/CVM drive the authorization decision.

🔒 PremiumEMVadvanced