8a199e26f3
...i.e., bignums, numbers, and strings. Also, ensure that if you try to multiply a buffer, it should be exactly 32 bytes. Eventually this "multiply" function will be replaced with a more conventional "mul" function, but not yet.
26 lines
782 B
JavaScript
26 lines
782 B
JavaScript
"use strict";
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var bignum = require('bignum');
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var CPPKey = require('bindings')('KeyModule').Key;
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var assert = require('assert');
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var Point = require('./common/Point');
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Point.add = function(p1, p2) {
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var u1 = p1.toUncompressedPubKey();
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var u2 = p2.toUncompressedPubKey();
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var pubKey = CPPKey.addUncompressed(u1, u2);
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return Point.fromUncompressedPubKey(pubKey);
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};
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Point.multiply = function(p1, x) {
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if (Buffer.isBuffer(x) && x.length !== 32)
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throw new Error('if x is a buffer, it must be 32 bytes')
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var u1 = p1.toUncompressedPubKey();
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if (typeof x === 'number' || typeof x === 'string')
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x = (new bignum(x)).toBuffer({size: 32});
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var pubKey = CPPKey.multiplyUncompressed(u1, x);
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return Point.fromUncompressedPubKey(pubKey);
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};
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module.exports = (Point);
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