lib/services/private-transfer.js
'use strict';
const baAsn1 = require('../asn1');
module.exports.encode = (buffer, vendorId, serviceNumber, data) => {
baAsn1.encodeContextUnsigned(buffer, 0, vendorId);
baAsn1.encodeContextUnsigned(buffer, 1, serviceNumber);
baAsn1.encodeOpeningTag(buffer, 2);
for (let i = 0; i < data.length; i++) {
buffer.buffer[buffer.offset++] = data[i];
}
baAsn1.encodeClosingTag(buffer, 2);
};
module.exports.decode = (buffer, offset, apduLen) => {
let len = 0;
let result;
let decodedValue;
const value = {};
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeUnsigned(buffer, offset + len, result.value);
len += decodedValue.len;
value.vendorId = decodedValue.value;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeUnsigned(buffer, offset + len, result.value);
len += decodedValue.len;
value.serviceNumber = decodedValue.value;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
const size = apduLen - (offset + len + 1);
const data = [];
for (let i = 0; i < size; i++) {
data.push(buffer[offset + len++]);
}
value.data = data;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
value.len = len;
return value;
};