58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
// CJDNS pubkey to IPv6
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// BASE32 code form CJDNS library
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var numForAscii = [
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99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,
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99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,
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99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9,99,99,99,99,99,99,
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99,99,10,11,12,99,13,14,15,99,16,17,18,19,20,99,
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21,22,23,24,25,26,27,28,29,30,31,99,99,99,99,99,
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99,99,10,11,12,99,13,14,15,99,16,17,18,19,20,99,
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21,22,23,24,25,26,27,28,29,30,31,99,99,99,99,99,
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];
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// see util/Base32.h
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var Base32_decode = function (input) {
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var output = [];
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var outputIndex = 0;
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var inputIndex = 0;
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var nextByte = 0;
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var bits = 0;
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while (inputIndex < input.length) {
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var o = input.charCodeAt(inputIndex);
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if (o & 0x80) { throw new Error(); }
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var b = numForAscii[o];
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inputIndex++;
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if (b > 31) { throw new Error("bad character " + input[inputIndex] + " in " + input); }
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nextByte |= (b << bits);
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bits += 5;
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if (bits >= 8) {
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output[outputIndex] = nextByte & 0xff;
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outputIndex++;
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bits -= 8;
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nextByte >>= 8;
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}
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}
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if (bits >= 5 || nextByte) {
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throw new Error("bits is " + bits + " and nextByte is " + nextByte);
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}
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return output;
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};
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// Convert Public Key to IPv6
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// TODO add :
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var publicKeyCache = [];
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function public2IPv6(PubKey) {
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if (!publicKeyCache[PubKey]) {
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var IPv6=Base32_decode(PubKey);
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IPv6=sha512(sha512.array(IPv6));
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IPv6=IPv6.substr(0,32);
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publicKeyCache[PubKey]=IPv6;
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}
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return publicKeyCache[PubKey];
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} |