Identity/AttachedServices/Key Stretching Performance Tests

Test Results (in ops/sec)

Browser / Test	Firefox 23 Desktop	Google Chrome 28	Firefox Android Beta 24	Firefox OS	Android WebView
[1] pbkdf2 key #stretch-KDF	5.39 ops/sec ±4.20% (30 runs sampled)	8.12 ops/sec ±1.15% (43 runs sampled)	0.47 ops/sec ±7.73% (7 runs sampled)	0.24 ops/sec ±7.06% (6 runs sampled)	0.66 ops/sec ±4.35% (8 runs sampled)
[2] Key Stretch w/ Remote Helper	0.66 ops/sec ±10.70% (8 runs sampled)	0.79 ops/sec ±1.98% (8 runs sampled)	0.16 ops/sec ±9.02% (5 runs sampled)	0.10 ops/sec ±3.37% (5 runs sampled)	0.18 ops/sec ±21.96% (6 runs sampled)

Tests

• [1] pdbkdf2.derive(...) - Client pdbkdf2 derivation #stretch-KDF
• [2] keyStretch.derive(email, password) - Full Key Stretch with a remote helper at "http://scrypt.dev.lcip.org/". #stretch-KDF + #main-KDF

Test Framework

These performance tests use Benchmark.js

• "ops/sec" stands for operations per second. That is how many times a test is projected to execute in a second.
• A test is repeatedly executed until it reaches the minimum time needed to get a percentage uncertainty for the measurement of less than or equal to 1%. The number of iterations will vary depending on the resolution of the environment’s timer and how many times a test can execute in the minimum run time. We collect completed test runs for 5 seconds (configurable), or at least 5 runs (also configurable), and then perform statistical analysis on the sample. So, a test may be repeated 100,000 times in 50 ms (the minimum run time for most environments), and then repeated 100 times more (5 seconds). A larger sample size (in this example, 100), leads to a smaller margin of error.

Test Suite Page: http://v14d.com/picl/benchmark.html