Private
Card authorization
Verification of card validation using authorization on amount up to 1 USD

Scheme of API card authorization
Forming a request to API for self-integration:
Example of using SDK:
#!/bin/bash
PUBLIC_KEY='your_public_key'
PRIVATE_KEY='your_private_key'
API_URL='https://www.liqpay.ua/api/request'
JSON="{ 
	\"action\" : \"auth\",
	\"version\" : 3,
	\"public_key\" : \"${PUBLIC_KEY}\", 
	\"phone\" : \"380950000001\", 
	\"amount\" : \"1\", 
	\"currency\" : \"USD\", 
	\"description\" : \"description text\", 
	\"order_id\" : \"order_id_1\", 
	\"card\" : \"4731195301524634\", 
	\"card_exp_month\" : \"03\", 
	\"card_exp_year\" : \"22\", 
	\"card_cvv\" : \"111\"
}"
# DATA is base64_encode result from JSON string
DATA=$(echo -n ${JSON} | base64)
# SIGNATURE is base64 encode result from sha1 binary hash from concatenate string ${PRIVATE_KEY}${DATA}${PRIVATE_KEY}
SIGNATURE=$(echo -n "${PRIVATE_KEY}${DATA}${PRIVATE_KEY}" | openssl dgst -binary -sha1 | base64)
# REQ is json response from liqpay
REQ=$(curl --silent -XPOST ${API_URL} --data-urlencode data="${DATA}" --data-urlencode signature="${SIGNATURE}")
echo "Result: ${REQ}"
$liqpay = new LiqPay($public_key, $private_key);
$res = $liqpay->api("request", array(
	'action'         => 'auth',
	'version'        => '3',
	'phone'          => '380950000001',
	'amount'         => '1',
	'currency'       => 'USD',
	'description'    => 'description text',
	'order_id'       => 'order_id_1',
	'card'           => '4731195301524634',
	'card_exp_month' => '03',
	'card_exp_year'  => '22',
	'card_cvv'       => '111'
));
HashMap<String, String> params = new HashMap<String, String>();
params.put("action", "auth");
params.put("version", "3");
params.put("phone", "380950000001");
params.put("amount", "1");
params.put("currency", "USD");
params.put("description", "description text");
params.put("order_id", "order_id_1"); 
params.put("card", "4731195301524634");
params.put("card_exp_month", "03");
params.put("card_exp_year", "22");
params.put("card_cvv", "111");
LiqPay liqpay = new LiqPay(PUBLIC_KEY, PRIVATE_KEY);
HashMap<String, Object> res = liqpay.api("request", params);    
System.out.println(res.get("status"));
  
liqpay = LiqPay(public_key, private_key)
res = liqpay.api("request", {
	"action"         : "auth",
	"version"        : "3",
	"phone"          : "380950000001",
	"amount"         : "1",
	"currency"       : "USD",
	"description"    : "description text",
	"order_id"       : "order_id_1",
	"card"           : "4731195301524634",
	"card_exp_month" : "03",
	"card_exp_year"  : "22",
	"card_cvv"       : "111"
})
liqpay = Liqpay::Liqpay.new(
:public_key  => 'public_key',
:private_key => 'private_key'
)
res = liqpay.api("request", {
	:action         => "auth",
	:version        => "3",
	:phone          => "380950000001",
	:amount         => "1",
	:currency       => "USD",
	:description    => "description text",
	:order_id       => "order_id_1",
	:card           => "4731195301524634",
	:card_exp_month => "03",
	:card_exp_year  => "22",
	:card_cvv       => "111"
})
LiqPay = liqpay:init(PublicKey, PrivateKey),
Res = liqpay:api("request", [
	{<<"action">>,         <<"auth">>}, 
	{<<"version">>,        <<"3">>}, 
	{<<"phone">>,          <<"380950000001">>}, 
	{<<"amount">>,         <<"1">>}, 
	{<<"currency">>,       <<"USD">>}, 
	{<<"description">>,    <<"description text">>}, 
	{<<"order_id">>,       <<"order_id_1">>}, 
	{<<"card">>,           <<"4731195301524634">>}, 
	{<<"card_exp_month">>, <<"03">>}, 
	{<<"card_exp_year">>,  <<"22">>}, 
	{<<"card_cvv">>,       <<"111">>}
], LiqPay)
var LiqPay = require('liqpay');
var liqpay = new LiqPay(public_key, private_key);
liqpay.api("request", {
	"action"         : "auth",
	"version"        : "3",
	"phone"          : "380950000001",
	"amount"         : "1",
	"currency"       : "USD",
	"description"    : "description text",
	"order_id"       : "order_id_1",
	"card"           : "4731195301524634",
	"card_exp_month" : "03",
	"card_exp_year"  : "22",
	"card_cvv"       : "111"
}, function( json ){
	console.log( json.status );
});
my $liqpay = Liqpay->new($public_key,$private_key);
my $res = $liqpay->api("request",
	{
	'action'         => 'auth',
	'version'        => '3',
	'phone'          => '380950000001',
	'amount'         => '1',
	'currency'       => 'USD',
	'description'    => 'description text',
	'order_id'       => 'order_id_1',
	'card'           => '4731195301524634',
	'card_exp_month' => '03',
	'card_exp_year'  => '22',
	'card_cvv'       => '111'
	}
);
Init("my_public_key", "my_private_key")
Api("request", map[string]interface{}{
    "action": "auth",
    "version": 3,
    "public_key": PublicKey,
    "phone": "380950000001",
    "amount": 1,
    "currency": "UAH",
    "description": "Test payment",
    "order_id": "order_id_1",
    "card": "4731195301524634",
    "card_exp_month": "03", 
    "card_exp_year": "22", 
    "card_cvv": "111",
})
Options for generating data:
Main
Parameter Required Type Description
version Required Number Version API. Current value - 3
public_key Required String Public key - the store identifier. You can get the key in the store settings
action Required String auth
amount Required Number Payment amount. For example: 5, 7.34
card Required String Card number of the payer
card_cvv Required String CVV/CVV2
card_exp_month Required String Expiry month of the payer's card. For example: 08
card_exp_year Required String Expiry year of the payer's card.For example: 19
currency Required String Payment currency. Possible values: USD, EUR, RUB, UAH
description Required String Payment description.
ip Required String Client IP
order_id Required String Unique purchase ID in your shop. Maximum length is 255 symbols.
language Optional String Customer's language ru, uk, en
verifycode Optional String Possible value Y. Dynamic verification code is generated and going back to Callback. Also generated code will be transferred to verification transactions for displaying in statement by client's card. Works for action= auth.
3DS parameters
mpi_md Optional String Parameter that returns from ACS MD.
This parameter is transmitted only in case when is used the API MPI
mpi_pares Optional String Parameter that returns from ACS pares.
This parameter is transmitted only in case when is used the API MPI
Other parameters
suburl Optional String URL of submerchant
Example response:
{
  "action": "auth",
  "payment_id": 165192,
  "status": "success",
  "version": 3,
  "paytype": "card",
  "public_key": "i000000000",
  "acq_id": 414963,
  "order_id": "98R1U1OV1485849059893399",
  "liqpay_order_id": "NYMK3AE61501685438251925",
  "description": "тест",
  "sender_phone": "380950000001",
  "sender_card_mask2": "414962*99",
  "sender_card_bank": "pb",
  "sender_card_type": "visa",
  "sender_card_country": 804,
  "amount": 0.01,
  "currency": "UAH",
  "sender_commission": 0.0,
  "receiver_commission": 0.0,
  "agent_commission": 0.0,
  "amount_debit": 0.01,
  "amount_credit": 0.01,
  "commission_debit": 0.0,
  "commission_credit": 0.0,
  "currency_debit": "UAH",
  "currency_credit": "UAH",
  "sender_bonus": 0.0,
  "amount_bonus": 0.0,
  "authcode_debit": "559310",
  "rrn_debit": "000663770891",
  "mpi_eci": "7",
  "is_3ds": false,
  "create_date": 1501687647977,
  "end_date": 1501687647977,
  "transaction_id": 165192
}
Response parameters
Parameter Type Description
acq_id Number Acquirer ID
action String Transaction type. Possible values: pay - payment, hold - amount of hold on sender's account, paysplit - splitting payments, subscribe - creation of a regular payment, paydonate - donation, auth - card preauth, regular - regular payment
agent_commission Number Agent comission in payment currency
amount Number Payment amount
amount_bonus Number Payer bonus amount in payment currency debit
amount_credit Number Payment amount for credit in currency of currency_credit
amount_debit Number Payment amount for debit in currency of currency_debit
authcode_debit String Authorization code for transaction of debit
commission_credit Number Commission from the receiver in currency_credit
commission_debit Number Commission from the sender in currency_debit
create_date String Date of payment creation
currency String Payment currency
currency_credit String Transaction currency of credit
currency_debit String Transaction currency of debit
description String Payment description
end_date String Date of payment edition/end
is_3ds Boolean Possible values:
true - transaction passed with 3DS,
false - transaction passed without 3DS
liqpay_order_id String Payment order_id in LiqPay system
mpi_eci Number Possible values: 5 - the transaction passed with 3DS (issuer and acquirer support 3d Secure technology), 6 - the issuer of the payer card does not support 3d Secure technology, 7 - the operation passed without 3d Secure
order_id String Order_id payment
payment_id Number Payment id in LiqPay system
paytype String Methods of payment. Possible values card - card payment, liqpay - with liqpay account, privat24 - with privat24 account, masterpass - with masterpass account, moment_part - installments, cash - cash, invoice - to email, qr - qr code scanning.
public_key String Shop public key
receiver_commission Number Receiver comission in payment currency
rrn_debit String Unique transaction ID in authorization and settlement system of issuer bank Retrieval Reference number
sender_bonus Number Sender's bonus in the payment currency
sender_card_bank String Sender's card bank
sender_card_country String Sender's card country. Digital ISO 3166-1 code
sender_card_mask2 String Sender's card
sender_card_type String Sender's card type MC/Visa
sender_commission Number Commission from the sender in the payment currency
sender_phone String Sender's phone number
status String Payment status.
Available values:
Final payment statuses
error Failed payment. Data is incorrect
failure Failed payment
success Successful payment
transaction_id Number Id transactions in the LiqPay system
version Number Version API. Present value - 3