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Copy pathdevice-communication-control.js
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43 lines (40 loc) · 1.49 KB
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'use strict';
const baAsn1 = require('../asn1');
module.exports.encode = (buffer, timeDuration, enableDisable, password) => {
if (timeDuration > 0) {
baAsn1.encodeContextUnsigned(buffer, 0, timeDuration);
}
baAsn1.encodeContextEnumerated(buffer, 1, enableDisable);
if (password && password !== '') {
baAsn1.encodeContextCharacterString(buffer, 2, password);
}
};
module.exports.decode = (buffer, offset, apduLen) => {
let len = 0;
let value = {};
let decodedValue;
let result;
if (baAsn1.decodeIsContextTag(buffer, offset + len, 0)) {
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeUnsigned(buffer, offset + len, result.value);
value.timeDuration = decodedValue.value;
len += decodedValue.len;
}
if (!baAsn1.decodeIsContextTag(buffer, offset + len, 1)) return;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeEnumerated(buffer, offset + len, result.value);
value.enableDisable = decodedValue.value;
len += decodedValue.len;
if (len < apduLen) {
if (!baAsn1.decodeIsContextTag(buffer, offset + len, 2)) return;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeCharacterString(buffer, offset + len, apduLen - (offset + len), result.value);
value.password = decodedValue.value;
len += decodedValue.len;
}
value.len = len;
return value;
};