mirror of https://github.com/lukechilds/node.git
isaacs
12 years ago
2 changed files with 106 additions and 0 deletions
@ -0,0 +1,103 @@ |
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var common = require('../common.js'); |
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var bench = common.createBenchmark(main, { |
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writes: [500], |
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cipher: [ 'AES192', 'AES256' ], |
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type: ['asc', 'utf', 'buf'], |
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len: [2, 1024, 102400, 1024 * 1024], |
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api: ['legacy', 'stream'] |
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}); |
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function main(conf) { |
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var api = conf.api; |
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if (api === 'stream' && process.version.match(/^v0\.[0-8]\./)) { |
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console.error('Crypto streams not available until v0.10'); |
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// use the legacy, just so that we can compare them.
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api = 'legacy'; |
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} |
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var dur = conf.dur; |
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var crypto = require('crypto'); |
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var assert = require('assert'); |
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var alice = crypto.getDiffieHellman('modp5'); |
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var bob = crypto.getDiffieHellman('modp5'); |
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alice.generateKeys(); |
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bob.generateKeys(); |
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var pubEnc = /^v0\.[0-8]/.test(process.version) ? 'binary' : null; |
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var alice_secret = alice.computeSecret(bob.getPublicKey(), pubEnc, 'hex'); |
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var bob_secret = bob.computeSecret(alice.getPublicKey(), pubEnc, 'hex'); |
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// alice_secret and bob_secret should be the same
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assert(alice_secret == bob_secret); |
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var alice_cipher = crypto.createCipher(conf.cipher, alice_secret); |
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var bob_cipher = crypto.createDecipher(conf.cipher, bob_secret); |
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var message; |
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var encoding; |
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switch (conf.type) { |
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case 'asc': |
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message = new Array(conf.len + 1).join('a'); |
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encoding = 'ascii'; |
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break; |
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case 'utf': |
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message = new Array(conf.len / 2 + 1).join('ü'); |
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encoding = 'utf8'; |
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break; |
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case 'buf': |
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message = new Buffer(conf.len); |
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message.fill('b'); |
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break; |
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default: |
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throw new Error('unknown message type: ' + conf.type); |
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} |
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var fn = api === 'stream' ? streamWrite : legacyWrite; |
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// write data as fast as possible to alice, and have bob decrypt.
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// use old API for comparison to v0.8
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bench.start(); |
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fn(alice_cipher, bob_cipher, message, encoding, conf.writes); |
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} |
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function streamWrite(alice, bob, message, encoding, writes) { |
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var written = 0; |
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bob.on('data', function(c) { |
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written += c.length; |
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}); |
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bob.on('end', function() { |
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// Gbits
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var bits = written * 8; |
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var gbits = written / (1024 * 1024 * 1024); |
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bench.end(gbits); |
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}); |
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alice.pipe(bob); |
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while (writes-- > 0) |
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alice.write(message, encoding); |
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alice.end(); |
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} |
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function legacyWrite(alice, bob, message, encoding, writes) { |
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var written = 0; |
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for (var i = 0; i < writes; i++) { |
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var enc = alice.update(message, encoding); |
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var dec = bob.update(enc); |
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written += dec.length; |
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} |
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var enc = alice.final(); |
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var dec = bob.update(enc); |
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written += dec.length; |
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dec = bob.final(); |
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written += dec.length; |
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var bits = written * 8; |
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var gbits = written / (1024 * 1024 * 1024); |
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bench.end(gbits); |
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} |
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