8583报文结构分析及C语言实现
------报文结构分析
曹玉坤
2011-7-11
目录
1 概述 (3)
2 8583报文结构 (3)
3 各字段意义说明 (4)
4 报文结构样例 (4)
5 报文内容样例 (8)
1概述
8583报文是开放的自由度比较高的报文格式之一，多用于银行报文的传输。由于其较高的自由度，每家银行都可以规定自己的8583报文格式，从一定程度上为银行报文提供了加密。即如果想要解开8583报文的内容，就必须知道此8583报文遵循的是何种结构。而这个结构则是由银行内部自己制定。
28583报文结构
大家都对结构体比较熟悉，我们先来看看8583的结构体。
Typedef struct ISO8583
{
int length; /*数据域长度*/
int variable_flag; /*是否变长标志0：否 2：2位变长, 3：3位变长*/
char *data; /*存放具体值*/
} ISO8583
我们并没有列出所有的字段，只列出些比较常用的。首先我们看第一个数据的长度，指的是数据的最大长度（如果是变长的话）。
第二个是是否变长标志，这个稍微有点麻烦，我们举个例子
说明。先看看如果是0，标识定长，也就是说数据的长度就是前面定义的数据长度位；如果是2或3，那就说明数据的前两位或前三位是标识数据的实际长度的。如，我们数据3，100：标识数据总长度为100，实际长度通过前三位标识。00812345678，前面三位008，标识实际长度，后面12345678 8位才是真实的数据。
再来后面就是存放的具体数值。
3各字段意义说明
前面我们大概介绍了各个字段的意义，这里我们着重讲下一个特殊的字段，就是8583的灵魂，bitmap。Bitmap顾名思义就是位图，他表示什么呢？他表示哪些位有值，哪些没有。他长度一共16个字节，一共128位，每位标识相应的位有没有数据，如果有则为1，没有标识为0。这样就能大大提高我们的读取效率。还有我们有可能需要标识出报文长度时128位还是64位，因为很多报文没有那么多的要素，不需要那么多的数据位。这个是通过bitmap第一位标识的，如果是1就认为报文长度为128，如果为0就说明报文长度为64。
4报文结构样例
/*000*/ {TYP_BCD, 0, 4, "Message Type Indicator"},
/*001*/ {TYP_BIT, 0, 16, "Bitmap"},
/*002*/ {TYP_ASC, 0, 35, "报文标识号"},
/*003*/ {TYP_ASC, 0, 19, "报文发送时间"},
/*004*/ {TYP_BCD, 0, 14, "发起直接参与机构"},
/*005*/ {TYP_BCD, 0, 14, "发起间接参与机构"},
/*006*/ {TYP_BCD, 0, 14, "接收直接参与机构"},
/*007*/ {TYP_BCD, 0, 14, "接收间接参与机构"},
/*008*/ {TYP_ASC, 0, 4, "系统编号"},
/*009*/ {TYP_BCD, 2, 16, "支付交易序号"},
/*010*/ {TYP_ASC, 2, 60, "付款人名称"},
/*011*/ {TYP_BCD, 2, 32, "付款人账号"},
/*012*/ {TYP_BCD, 0, 14, "付款人开户行号"},
/*013*/ {TYP_BCD, 0, 14, "付款行行号"},
/*014*/ {TYP_BCD, 0, 14, "收款行行号"},
/*015*/ {TYP_ASC, 2, 60, "收款人名称"},
/*016*/ {TYP_BCD, 2, 32, "收款人帐号"},
/*017*/ {TYP_BCD, 0, 14, "收款人开户行号"},
/*018*/ {TYP_ASC, 0, 3, "币种代码"},
/*019*/ {TYP_BCD, 0, 18, "金额"},
/*020*/ {TYP_BCD, 0, 4, "业务类型编码"},
/*021*/ {TYP_BCD, 0, 5, "业务种类编码"},
/*022*/ {TYP_ASC, 0, 12, "附言"},
/*023*/ {TYP_BCD, 0, 3, "Card sequence number"},
/*024*/ {TYP_BCD, 0, 3, "Function code"},
/*025*/ {TYP_BCD, 0, 4, "Message reason code"},
/*026*/ {TYP_BCD, 0, 4, "Card acceptor business code"},
/*027*/ {TYP_BCD, 0, 1, "Approval code length"},
/*028*/ {TYP_BCD, 0, 6, "Date, Reconciliation"},
/*029*/ {TYP_BCD, 0, 3, "Reconciliation indicator"},
/*030*/ {TYP_BCD, 0, 24, "Amounts, original"},
/*031*/ {TYP_ASC, 2, 99, "Acquirer reference data"},
/*032*/ {TYP_BCD, 2, 11, "Acquirer institution identification code"}, /*033*/ {TYP_BCD, 2, 11, "Forwarding institution identification code"}, /*034*/ {TYP_ASC, 2, 28, "Primary account number, extended"},
/*035*/ {TYP_ASC, 2, 37, "Track 2 data"},
/*036*/ {TYP_ASC, 3, 104, "Track 3 data"},
/*037*/ {TYP_ASC, 0, 12, "Retrieval reference number"},
/*038*/ {TYP_ASC, 0, 6, "Approval code"},
/*039*/ {TYP_BCD, 0, 3, "Action code"},
/*040*/ {TYP_BCD, 0, 3, "Service code"},
/*041*/ {TYP_ASC, 0, 8, "Card acceptor terminal identification"},
/*042*/ {TYP_ASC, 0, 15, "Card acceptor identification code"},
/*043*/ {TYP_ASC, 2, 99, "Card acceptor name/location"},
/*044*/ {TYP_ASC, 2, 99, "Additional response data"},
/*045*/ {TYP_ASC, 2, 76, "Track 1 data"},
/*046*/ {TYP_ASC, 3, 204, "Amounts, Fees"},
/*047*/ {TYP_ASC, 3, 999, "Additional data - national"},
/*048*/ {TYP_ASC, 3, 999, "Additional data - private"},
/*049*/ {TYP_ASC, 0, 3, "Currency code, Transaction"},
/*050*/ {TYP_ASC, 0, 3, "Currency code, Reconciliation"},
/*051*/ {TYP_ASC, 0, 3, "Currency code, Cardholder billing"},
/*052*/ {TYP_BIN, 0, 8, "Personal identification number, PIN) data"}, /*053*/ {TYP_BIN, 2, 48, "Security related control information"},
/*054*/ {TYP_ASC, 3, 120, "Amounts, additional"},
/*055*/ {TYP_BIN, 3, 255, "IC card system related data"},
/*056*/ {TYP_BIN, 3, 255, "Original data elements"},
/*057*/ {TYP_BCD, 0, 3, "Authorization life cycle code"},
/*058*/ {TYP_BCD, 2, 11, "Authorizing agent institution Id Code"}, /*059*/ {TYP_ASC, 3, 999, "Transport data"},
/*060*/ {TYP_ASC, 3, 999, "Reserved for national use"},
/*061*/ {TYP_ASC, 3, 999, "Reserved for national use"},
/*062*/ {TYP_ASC, 3, 999, "Reserved for private use"},
/*063*/ {TYP_ASC, 3, 999, "Reserved for private use"},
/*064*/ {TYP_BIN, 0, 8, "Message authentication code field"}
#if ISO_FLDS==128
,
/*065*/ {TYP_BIN, 0, 8, "Reserved for ISO use"},
/*066*/ {TYP_ASC, 3, 204, "Amounts, original fees"},
/*067*/ {TYP_BCD, 0, 2, "Extended payment data"},
/*068*/ {TYP_BCD, 0, 3, "Country code, receiving institution"},
/*069*/ {TYP_BCD, 0, 3, "Country code, settlement institution"},
/*070*/ {TYP_BCD, 0, 3, "Country code, authorizing agent Inst."},
/*071*/ {TYP_BCD, 0, 8, "Message number"},
/*072*/ {TYP_ASC, 3, 999, "Data record"},
/*073*/ {TYP_BCD, 0, 6, "Date, action"},
/*074*/ {TYP_BCD, 0, 10, "Credits, number"},
/*075*/ {TYP_BCD, 0, 10, "Credits, reversal number"},
/*076*/ {TYP_BCD, 0, 10, "Debits, number"},
/*077*/ {TYP_BCD, 0, 10, "Debits, reversal number"},
/*078*/ {TYP_BCD, 0, 10, "Transfer, number"},
/*079*/ {TYP_BCD, 0, 10, "Transfer, reversal number"},
/*080*/ {TYP_BCD, 0, 10, "Inquiries, number"},
/*081*/ {TYP_BCD, 0, 10, "Authorizations, number"},
/*082*/ {TYP_BCD, 0, 10, "Inquiries, reversal number"},
/*083*/ {TYP_BCD, 0, 10, "Payments, number"},
/*084*/ {TYP_BCD, 0, 10, "Payments, reversal number"},
/*085*/ {TYP_BCD, 0, 10, "Fee collections, number"},
/*086*/ {TYP_BCD, 0, 16, "Credits, amount"},
/*087*/ {TYP_BCD, 0, 16, "Credits, reversal amount"},
/*088*/ {TYP_BCD, 0, 16, "Debits, amount"},
/*089*/ {TYP_BCD, 0, 16, "Debits, reversal amount"},
/*090*/ {TYP_BCD, 0, 10, "Authorizations, reversal number"},
/*091*/ {TYP_BCD, 0, 3, "Country code, transaction Dest. Inst."},
/*092*/ {TYP_BCD, 0, 3, "Country code, transaction Orig. Inst."},
/*093*/ {TYP_BCD, 2, 11, "Transaction Dest. Inst. Id code"},
/*094*/ {TYP_BCD, 2, 11, "Transaction Orig. Inst. Id code"},
/*095*/ {TYP_ASC, 2, 99, "Card issuer reference data"},
/*096*/ {TYP_BIN, 3, 999, "Key management data"},
/*097*/ {TYP_BCD, 0, 1+16, "Amount, Net reconciliation"}, /* was ISO_AMOUNT */ /*098*/ {TYP_ASC, 0, 25, "Payee"},
/*099*/ {TYP_ASC, 2, 11, "Settlement institution Id code"},
/*100*/ {TYP_BCD, 2, 11, "Receiving institution Id code"},
/*101*/ {TYP_ASC, 2, 17, "File name"},
/*102*/ {TYP_ASC, 2, 28, "Account identification 1"},
/*103*/ {TYP_ASC, 2, 28, "Account identification 2"},
/*104*/ {TYP_ASC, 3, 100, "Transaction description"},
/*105*/ {TYP_BCD, 0, 16, "Credits, Chargeback amount"},
/*106*/ {TYP_BCD, 0, 16, "Debits, Chargeback amount"},
/*107*/ {TYP_BCD, 0, 10, "Credits, Chargeback number"},
/*108*/ {TYP_BCD, 0, 10, "Debits, Chargeback number"},
/*109*/ {TYP_ASC, 2, 84, "Credits, Fee amounts"},
/*110*/ {TYP_ASC, 2, 84, "Debits, Fee amounts"},
/*111*/ {TYP_ASC, 3, 999, "Reserved for ISO use"},
/*112*/ {TYP_ASC, 3, 999, "Reserved for ISO use"},
/*113*/ {TYP_ASC, 3, 999, "Reserved for ISO use"},
/*114*/ {TYP_ASC, 3, 999, "Reserved for ISO use"},
/*115*/ {TYP_ASC, 3, 999, "Reserved for ISO use"},
/*116*/ {TYP_ASC, 3, 999, "Reserved for national use"},
/*117*/ {TYP_ASC, 3, 999, "Reserved for national use"},
/*118*/ {TYP_ASC, 3, 999, "Reserved for national use"},
/*119*/ {TYP_ASC, 3, 999, "Reserved for national use"},
/*120*/ {TYP_ASC, 3, 999, "Reserved for national use"},
/*121*/ {TYP_ASC, 3, 999, "Reserved for national use"},
/*122*/ {TYP_ASC, 3, 999, "Reserved for national use"},
/*123*/ {TYP_ASC, 3, 999, "Reserved for private use"},
/*124*/ {TYP_ASC, 3, 999, "Reserved for private use"},
/*125*/ {TYP_ASC, 3, 999, "Reserved for private use"},
/*126*/ {TYP_ASC, 3, 999, "Reserved for private use"},
/*127*/ {TYP_ASC, 3, 999, "Reserved for private use"},
/*128*/ {TYP_BIN, 0, 8, "Message authentication code field"}
#endif /*ISO_FLDS==128*/
5报文内容样例
内容就是按照8583规定的样式，将对应位的内容对应在相应的位置上。