EMV API
Card Reader
The EMV.
open reader and wait card
int open_reader(int reader)
Open the card reader of the POS. If select open all of readers, any open success return success.
Parameters
| reader | int | 0: all of readers,1: only contact reader,2: only contactless reader. |
| Returns | |
|---|---|
| int | The result code, >= 0, success; <0 error code. |
close reader
void close_reader(int reader)
Close the card reader of the POS.
Parameters
| reader | int | 0: all of readers,1: only contact reader,2: only contactless reader. |
| Returns | |
|---|---|
| int | The result code, >= 0, success; <0 error code. |
get current card type
int get_card_type(void)
Parameters
| Returns | |
|---|---|
| int | The result , 1:contact card; 2:contactless card; -1: no card. |
get card ATR
int get_card_atr(unsigned char *pATR)
Parameters
| pATR | unsigned char * | the value of ATR. |
| Returns | |
|---|---|
| int | The result code, >= 0, the length of ATR; <0 error code. |
APDU command
int transmit_card( unsigned char *cmd,int cmdLength,unsigned char *respData,int respDataLength)
Parameters
| cmd | unsigned char * | APDU command. |
| cmdLength | int | the length of APDU command. |
| respData | unsigned char * | the value of card response. |
| respDataLength | int | accepted max length of card reasponse. |
| Returns | |
|---|---|
| int | The result code, >=0,the length of card response; <0 error code. |
store and set EMV data
check the existence of data for the tag
int emv_is_tag_present(int tag)
Parameters
| tag | int | tag name. |
| Returns | |
|---|---|
| int | The result code, >= 0, the length of data; <0 the data not exist. |
get the data for the tag
int emv_get_tag_data(int tag, unsigned char *data, int dataLength)
Parameters
| tag | int | tag name. |
| data | unsigned char * | the value of the data. |
| int | int | accepted max length of the data. |
| Returns | |
|---|---|
| int | The result code, >= 0, the length of the data; <0 error code. |
get the data for the tag list
int emv_get_tag_list_data(int *tagNames, int tagCount,unsigned char *pTagsValue,int pTagsValueLength)
Parameters
| tagNames | int * | the list of the tags. |
| tagCount | int | the count of the tags. |
| pTagsValue | unsigned char * | the values of the data（TLV format）. |
| pTagsValueLength | int | accepted max length of the data. |
| Returns | |
|---|---|
| int | The result code, >= 0, the length of the data; <0 error code. |
set the data for the tag
int emv_set_tag_data(int tag, unsigned char *data, int length)
Parameters
| tag | int | tag name. |
| data | unsigned char * | the value of the data. |
| length | int | the length of the data. |
| Returns | |
|---|---|
| int | The result code, >= 0, the length of the data; <0 error code. |
EMV transaction processing
EMVKernel initialize
void emv_kernel_initialize(unsigned char *pInitData)
Parameters
| pInitData | unsigned char * | See from follows |
typedef struct
{
// callback function for card event
CARD_EVENT_OCCURED pCafdEventOccured;
// callback function for EVM processing
EMV_PROCESS_CALLBACK pEVMProcessCallback;
}EMV_INIT_DATA;
1） typedef void (*CARD_EVENT_OCCURED) (int eventType)
// any card event occured, this function will be revoked
// @param[in] eventType : SMART_CARD_EVENT_INSERT_CARD = 0;
// : SMART_CARD_EVENT_REMOVE_CARD = 1;
// : SMART_CARD_EVENT_POWERON_ERROR = 9;
// :SMART_CARD_EVENT_CONTALESS_HAVE_MORE_CARD = 10;
2） typedef void (*EMV_PROCESS_CALLBACK)(unsigned char *pData);
// callback function for EVM processing， pData have 2 bytes
// unsigned char status = pData[0]；
// unsigned char desc = pData[1]；
* status：
* STATUS_ERROR = 0; //ERROR
* STATUS_CONTINUE = 1; // not completed, need to continue
* STATUS_COMPLETION = 2; // completed
* desc
* when status = STATUS_COMPLETION， desc means：
* APPROVE_OFFLINE = 1; //Transaction approved Offline
* APPROVE_ONLINE = 2; //Transaction approved Online
* DECLINE_OFFLINE = 3; //Transaction declined Offline
* DECLINE_ONLINE = 4; //Transaction declined Onlin
* *
when status = STATUS_ERROR， desc means：
* SUCCESS = 0; //SUCCESS
* ERROR_NO_APP = 1; //No Application Selected when Application Select
* ERROR_APP_BLOCKED = 2; //card return 6A81 when Application Select
* ERROR_APP_SELECT = 3; //Error when Application Select
* ERROR_INIT_APP = 4; //Error when Initialize Application Data
* ERROR_EXPIRED_CARD = 5; // Card Expired
* ERROR_APP_DATA = 6; //Error when Read Application Data
* ERROR_DATA_INVALID = 7; // have invalid data
* ERROR_DATA_AUTH = 8; // Fail in offline authentication
* ERROR_GEN_AC = 9; //Generate AC error when Transaction Process
* ERROR_PROCESS_CMD = 10; //Process Command ERROR
* ERROR_SERVICE_NOT_ALLOWED = 11; //Service not Allowed
* ERROR_PINENTERY_TIMEOUT = 12; //PIN Entry timeout
* ERROR_OFFLINE_VERIFY = 13; //Check Offline PIN Error when Cardholder Verify
* ERROR_NEED_ADVICE = 14; //Communication Error with Host, but the card need
advice, halted the transaction
* ERROR_USER_CANCELLED = 15;
* ERROR_AMOUNT_OVER_LIMIT = 16; // amount over limit
* ERROR_AMOUNT_ZERO = 17; // amount can not be zero
* ERROR_OTHER_CARD = 18； // Please try other card
* *
when status = STATUS_CONTINUE， desc means：
* EMV_CANDIDATE_LIST = 1; //notify Application show Application Candidate List
* EMV_APP_SELECTED = 2; //Application Select Completed
* EMV_READ_APP_DATA = 3; //Read Application Data Completed
* EMV_DATA_AUTH = 4; //Data Authentication Completed
* EMV_OFFLINE_PIN = 5; // notify Application prompt Caldholder enter offline PIN,
* EMV_ONLINE_ENC_PIN = 6; //notify Application prompt Caldholder enter Online
PIN
* EMV_PIN_BYPASS_CONFIRM = 7; //notify Application confirm to Accepted PIN
Bypass or not
* EMV_PROCESS_ONLINE = 8; //notify Application to Process Online
* EMV_ID_CHECK = 9; //notify Application Check Cardholder's Identification
*/
Initialize EMV transaction data
void emv_trans_initialize(void)
EMV processing function
int emv_process_next(void)
| Returns | |
|---|---|
| int | The result code, >= 0, success; <0 error code. |
Others functions
Get EMV Kernel version
int emv_get_version_string(unsigned char *buffer, int bufferLength)
Parameters
| buffer | unsigned char * | the value of emv kernel version. |
| bufferLength | int | accepted max length of emv kernel version. |
| Returns | |
|---|---|
| int | The result code, >= 0, the length of emv kernel verion; <0 error code. |
Set transaction amount
int emv_set_trans_amount(unsigned char *amount)
Parameters
| amount | unsigned char * | '\0' as ending mark. |
| Returns | |
|---|---|
| int | The result code, >= 0, success; <0 error code. |
Set other amount
int emv_set_other_amount(unsigned char *amount)
Parameters
| amount | unsigned char * | '\0' as ending mark. |
| Returns | |
|---|---|
| int | The result code, >= 0, success; <0 error code. |
Set transaction type
int emv_set_trans_type(unsigned char transType)
Parameters
| transType | unsigned char | transaction type. |
#define TRANS_GOODS_SERVICE 0x00
#define TRANS_CASH 0x01
#define TRANS_INQUIRY 0x04
#define TRANS_TRANSFER 0x05
#define TRANS_PAYMENT 0x06
#define TRANS_ADMIN 0x07
#define TRANS_CASHBACK 0x09
#define TRANS_CARD_RECORD 0x0A
| Returns | |
|---|---|
| int | The result code, >= 0, success; <0 error code. |
set emv kernel type
int emv_set_kernel_type(unsigned char kernelType)
Parameters
| kernelType | unsigned char | kernel type, 1:EMV KERNAL; 2:QPBOC KERNAL for China; 3:UPCASH_KERNAL for China. |
#define TRANS_GOODS_SERVICE 0x00
#define TRANS_CASH 0x01
#define TRANS_INQUIRY 0x04
#define TRANS_TRANSFER 0x05
#define TRANS_PAYMENT 0x06
#define TRANS_ADMIN 0x07
#define TRANS_CASHBACK 0x09
#define TRANS_CARD_RECORD 0x0A
| Returns | |
|---|---|
| int | The result code, >= 0, success; <0 error code. |
Is needed advice the transaction
int emv_is_need_advice(void)
Parameters
| Returns | |
|---|---|
| int | The result , = 1, need advice; =0 not need advice. |
Is needed sign the transaction
int emv_is_need_signature(void)
Parameters
| Returns | |
|---|---|
| int | The result , = 1, need sign; =0 not need sign. |
Set the parameter for force online
int emv_set_force_online(int flag)
Parameters
| flag | int | 1:Yes;0:No. |
| Returns | |
|---|---|
| int | The result , = 1, force online; =0 not force online. |
Read transaction record from the card
int emv_get_card_record(uint8_t *data, int dataLength)
Parameters
| data | uint8_t * | transaction record. |
| dataLength | int | accepted max length for the transaction record. |
| Returns | |
|---|---|
| int | The result , >= 0, record count; <0 error code. |
Get application list
int emv_get_candidate_list(uint8_t *data, int dataLength)
Parameters
| data | uint8_t * | application list as "LV" format. |
| dataLength | int | accepted max length for application list. |
| Returns | |
|---|---|
| int | The result , >= 0, application count; <0 error code. |
Set the selected index for application selection
int emv_set_candidate_list_result(int index)
Parameters
| index | int | the selected index (started by 0). |
| Returns | |
|---|---|
| int | The result , >= 0,success; <0 error code. |
Set the result for cardholder ID check
int emv_set_id_check_result(int result)
Parameters
| result | int | ID Type（9F62）、 ID Number(9F61) 0: check Fail， 1:check success. |
| Returns | |
|---|---|
| int | The result , >= 0,success; <0 error code. |
Set the result for Online PIN
int emv_set_online_pin_entered(int result)
Parameters
| result | int | 0: Online PIN not input， 1:Online PIN inputted. |
| Returns | |
|---|---|
| int | The result , >= 0,success; <0 error code. |
Set acceptance for Bypass PIN
int emv_set_pin_bypass_confirmed(int result)
Parameters
| result | int | 0: refused bypass pin， 1: accepted bypass pin. |
| Returns | |
|---|---|
| int | The result , >= 0,success; <0 error code. |
Set the result for online certification
int emv_set_online_result(int result,unsigned char *respCode,unsigned char *issuerRespData,int issuerRespDataLength)
Parameters
| result | int | -1:communication failed； 0: host refused； 1: host accepted. |
| respCode | unsigned char * | 2 bytes response code from the host. |
| issuerRespData | unsigned char * | the emv data from the host. |
| issuerRespDataLength | int | the length of the emv data from the host. |
| Returns | |
|---|---|
| int | The result , >= 0,success; <0 error code. |
Setup EMVparameters
Clear AID info
int emv_aidparam_clear(void)
Parameters
| Returns | |
|---|---|
| int | The result , >= 0,success; <0 error code. |
Add AID info
int emv_aidparam_add( uint8_t *data, int dataLength)
Parameters
| data | uint8_t * | see form below， format is TLV. |
| dataLength | int | the length of the data. |
| Name | Format | Length(byte) | tag |
|---|---|---|---|
| AID | b | 5－16 | 9F06 |
| Application selection Indicator(ASI) | b | 1 | DF01 |
| Application version number | b | 2 | 9F08 |
| TAC－Default | b | 5 | DF11 |
| TAC－Online | b | 5 | DF12 |
| TAC－Denial | b | 5 | DF13 |
| Terminal floor limit | b | 4 | 9F1B |
| Threshold value for Biased Random Selection | b | 4 | DF15 |
| Maximum Target Percentage to be used for Biased Random Selection | b | 1 | DF16 |
| Target Percentage to be used for Random Selection | b | 1 | DF17 |
| Default DDOL | b | Var. | DF14 |
| Ability for Online PIN | b | 1 | DF18 |
| Application Label | b | 1-16 | 50 |
| Application Preferred Name | b | 1-16 | 9F12 |
| Application Priority Indicator | b | 1 | 87 |
| Merchant Identifier | b | 15 | 9F16 |
| Acquirer Identifier | b | 6-11 | 9F01 |
| MCC | b | 4 | 9F15 |
| POS Entry Mode | b | 2 | 9F39 |
| Transaction Reference Currency Code | b | 3 | 9F3C |
| Transaction Reference Currency Exponent | b | 1 | 9F3D |
| Default TDOL | b | Var. | DF22 |
Returns The result , >= 0,success; <0 error code.
Clear CAPK info
int emv_capkparam_clear(void)
Parameters
Returns The result , >= 0,success; <0 error code.
Add CAPK info
int emv_capkparam_add( uint8_t *data, int dataLength)
Parameters
| data | uint8_t * | see form below， format is TLV. |
| dataLength | int | the length of the data. |
| Name | Format | Length(byte) | tag |
|---|---|---|---|
| RID | b | 5 | 9F06 |
| Certification Authority Public Key Index | b | 1 | 9F22 |
| Certification Authority Public Key Expiration Date | n8 | 8 | DF05 |
| Certification Authority Public Key hash Algorithm Indicator | b | 1 | DF06 |
| Certification Authority Public Key Algorithm Indicator | b | 1 | DF07 |
| Certification Authority Public Key Modulus | b | Var. | DF02 |
| Certification Authority Public Key Exponent | b | 1 or 3 | DF04 |
| Certification Authority Public Key Checksum | b | Var. | DF03 |
Returns The result , >= 0,success; <0 error code.
Set EMV terminal parameters
int emv_terminal_param_set( uint8_t *TerminalParam)
'''Parameters'''
{|
|-
| ''TerminalParam'' || uint8_t * || see form below.
|}
<syntaxhighlight lang="c">
typedef struct{
unsigned char terminal_country_code[2]; // 9F1A [BCD] : Terminal Country Code
unsigned char TID[8]; // 9F1C [ASC]
unsigned char IFD[8]; // 9F1E [ASC] : IFD Serial Number
unsigned char transaction_currency_code[2]; // 5F2A [BCD]
unsigned char terminal_capabilities[3]; // 9F33 [BIN]
unsigned char terminal_type[1]; // 9F35 [BCD]
unsigned char transaction_currency_exponent[1]; // 5F36 [BCD]
unsigned char additional_terminal_capabilities[5]; // 9F40 [BIN]
unsigned char merchantNameLength;
unsigned char merchantName[20]; // 9F4E [ASC]
unsigned char rev[2];
}TERMINAL_INFO;
Returns The result , >= 0,success; <0 error code.
Clear Exception File
int emv_exception_file_clear(void)
Parameters
Returns The result , >= 0,success; <0 error code.
Add Exception File
int emv_exception_file_add( unsigned char *exceptFile)
Parameters
| exceptFile | uint8_t * | see form below. |
Typedef struct{
unsigned char cardNo[19]; // PAN
unsigned char panSequence; // PAN Sequence Number
}ExceptionFile
Returns The result , >= 0,success; <0 error code.
Clear Revoked Certicates
int emv_revoked_cert_clear(void)
Parameters
Returns The result , >= 0,success; <0 error code.
Add revoked Certificate
int emv_revoked_cert_add( uint8_t *revokedCert)
Parameters
| revokedCert | uint8_t * | see form below. |
Typedef struct{
unsigned char rid[5];
unsigned char capki;
}RevokedCert
Returns The result , >= 0,success; <0 error code.