#!/bin/bash
PUBLIC_KEY='your_public_key'
PRIVATE_KEY='your_private_key'
JSON="{ 
\"version\" : 3,
\"public_key\" : \"${PUBLIC_KEY}\", 
\"action\" : \"pay\", 
\"amount\" : 1, 
\"currency\" : \"USD\",
\"description\" : \"description text\",
\"order_id\" : \"order_id_1\"
}"
# DATA is base64_encode result from JSON string
DATA=$(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)
echo "data: ${DATA}"
echo "signature: ${SIGNATURE}"

# DATA in this example
# eyAidmVyc2lvbiIgOiAzLCAicHVibGljX2tleSIgOiAieW91cl9wdWJsaWNfa2V5IiwgImFjdGlv
# biIgOiAicGF5IiwgImFtb3VudCIgOiAxLCAiY3VycmVuY3kiIDogIlVTRCIsICJkZXNjcmlwdGlv
# biIgOiAiZGVzY3JpcHRpb24gdGV4dCIsICJvcmRlcl9pZCIgOiAib3JkZXJfaWRfMSIgfQ==

# SIGNATURE in this example
# QvJD5u9Fg55PCx/Hdz6lzWtYwcI=

$liqpay = new LiqPay($public_key, $private_key);
$html = $liqpay->cnb_form(array(
'action'         => 'pay',
'amount'         => '1',
'currency'       => 'USD',
'description'    => 'description text',
'order_id'       => 'order_id_1',
'version'        => '3'
));

HashMap<String, String> params = new HashMap<String, String>();
params.put("action", "pay");
params.put("amount", "1");
params.put("currency", "USD");
params.put("description", "description text");
params.put("order_id", "order_id_1"); 
params.put("version", "3"); 
LiqPay liqpay = new LiqPay(PUBLIC_KEY, PRIVATE_KEY);
String html = liqpay.cnb_form(params);    
System.out.println(html);

 
liqpay = LiqPay(public_key, private_key)
html = liqpay.cnb_form({
"action"         : "pay",
"amount"         : "1",
"currency"       : "USD",
"description"    : "description text",
"order_id"       : "order_id_1",
"version"        : "3"
})

liqpay = Liqpay::Liqpay.new(
:public_key  => 'public_key',
:private_key => 'private_key'
)
html = liqpay.cnb_form({
:action         => "pay",
:amount         => "1",
:currency       => "USD",
:description    => "description text",
:order_id       => "order_id_1",
:version        => "3"
})

LiqPay = liqpay:init(PublicKey, PrivateKey),
Html = liqpay:cnb_form([ 
{<<"action">>,      <<"pay">>}, 
{<<"amount">>,      <<"1">>}, 
{<<"currency">>,    <<"USD">>}, 
{<<"description">>, <<"description text">>}, 
{<<"order_id">>,    <<"order_id_1">>},
{<<"version">>,     <<"3">>}
], LiqPay)

var LiqPay = require('liqpay');
var liqpay = new LiqPay(public_key, private_key);
var html = liqpay.cnb_form({
'action'         : 'pay',
'amount'         : '1',
'currency'       : 'USD',
'description'    : 'description text',
'order_id'       : 'order_id_1',
'version'        : '3'
});

my $liqpay = Liqpay->new($public_key,$private_key);
my $html = $liqpay->cnb_form({
'action'         => 'pay',
'amount'         => '1',
'currency'       => 'USD',
'description'    => 'description text',
'order_id'       => 'order_id_1',
'version'        => '3'
}
);

Init("my_public_key", "my_private_key")
Form(map[string]interface{}{
"action": "pay",
"version": 3,
"public_key": PublicKey,
"amount": 1,
"currency": "UAH",
"description": "Test payment",
"order_id": "order_id_1",
}
);

	<form method="POST" action="https://www.liqpay.ua/api/3/checkout" 
	accept-charset="utf-8">
	<input type="hidden" name="data" value="eyAidmVyc2lvbiIgOiAzLCAicHVibGljX2tleSIgOiAieW91cl9wdWJsaWNfa2V5IiwgImFjdGlv
	biIgOiAicGF5IiwgImFtb3VudCIgOiAxLCAiY3VycmVuY3kiIDogIlVTRCIsICJkZXNjcmlwdGlv
	biIgOiAiZGVzY3JpcHRpb24gdGV4dCIsICJvcmRlcl9pZCIgOiAib3JkZXJfaWRfMSIgfQ=="/>
	<input type="hidden" name="signature" value="QvJD5u9Fg55PCx/Hdz6lzWtYwcI="/>
	<input type="image" 
	src="//static.liqpay.ua/buttons/p1ru.radius.png"/>
	</form>

[
  {
    "public_key": "i000000001",
    "amount": 1,
    "commission_payer": "sender",
    "server_url": "https://server1/callback"
  },
  {
    "public_key": "i000000002",
    "amount": 2,
    "commission_payer": "receiver",
    "server_url": "https://server2/callback"
  }
]

{
  "airLine": "Avia", // абревіатура авіакомпанії, max 4 символів.
  "ticketNumber": "ACSFD12354SA", // номер квитка, max 15 символів. 
  "passengerName": "John Doe", // ім'я пасажира, max 29 символів.
  "flightNumber": "742", // номер рейсу, max 5 цифр.
  "originCity": "DP", // код міста/аеропорту вильоту, max 5 символів.
  "destinationCity": "NY", // код міста/аеропорту призначення, max 5 символів.
  "departureDate": "100514" // дата вильоту в форматі YYMMDD, max 6 цифр.
}