43 lines
993 B
JavaScript
43 lines
993 B
JavaScript
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'use strict';
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var Enc = module.exports;
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Enc.base64ToBuf = function (str) {
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// node handles both base64 and urlBase64 equally
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return Buffer.from(str, 'base64');
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};
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Enc.base64ToHex = function (b64) {
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return Enc.bufToHex(Enc.base64ToBuf(b64));
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};
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Enc.bufToBase64 = function (u8) {
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// Ensure a node buffer, even if TypedArray
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return Buffer.from(u8).toString('base64');
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};
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Enc.bufToHex = function (u8) {
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// Ensure a node buffer, even if TypedArray
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return Buffer.from(u8).toString('hex');
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};
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Enc.bufToUrlBase64 = function (u8) {
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return Enc.bufToBase64(u8)
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.replace(/\+/g, '-').replace(/\//g, '_').replace(/=/g, '');
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};
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Enc.hexToUint8 = function (hex) {
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// TODO: I don't remember why I chose Uint8Array over Buffer...
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var buf = Buffer.from(hex, 'hex');
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var ab = buf.buffer.slice(buf.offset, buf.offset + buf.byteLength);
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return new Uint8Array(ab);
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};
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Enc.numToHex = function (d) {
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d = d.toString(16);
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if (d.length % 2) {
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return '0' + d;
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}
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return d;
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};
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