Benchmark: crypto vs random

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

function uuidv4() {
  let pattern = /[xy]/g;
  return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(pattern, (match, param, param$1) => {
    let r = Math.random() * 16.0 | 0;
    let v = match === "x" ? r : r & 3 | 8;
    return v.toString(16);
  });
}

var dates = Array.from({length: 200}, () => new Date())

Tests:

crypto
dates.map(() => crypto.randomUUID())
random-string
dates.map(() => uuidv4())

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
crypto
random-string

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 7 months ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.7 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 18 on iOS 18.7

View result in a separate tab

Test name	Executions per second
crypto	17748.7 Ops/sec
random-string	1879.2 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated 7 months ago):

LLMs can make mistakes. Check important info.

The benchmark defined in the provided JSON is focused on generating unique identifiers in JavaScript, comparing two different approaches: using the `crypto.randomUUID()` method versus a custom implementation called `uuidv4()`.

### Test Description:

1. **Test Cases:**
   - **`crypto.randomUUID()`**: This is a built-in JavaScript function available in modern browsers that generates a random UUID (Universally Unique Identifier) compliant with RFC 4122.
   - **`uuidv4()`**: This is a custom function defined in the benchmark preparation code to generate a UUID by using the `Math.random()` function. It constructs the UUID string manually based on the required format.

### Comparison of Approaches:

1. **Using `crypto.randomUUID()`**
   - **Pros:**
     - **Cryptographic Security**: This method utilizes the underlying cryptographic API of the browser, generating UUIDs that are secure and random, making them suitable for scenarios requiring high uniqueness.
     - **Simplicity**: It is easy to use as it requires no setup other than calling the function.
   - **Cons:**
     - **Browser Compatibility**: Not all older browsers may support this method, which could affect its usage in some environments.
     - **Performance**: Depending on the implementation by the browser, performance may vary but is generally optimized.

2. **Using `uuidv4()`**
   - **Pros:**
     - **Customizable**: This function can be altered or optimized based on specific needs; you control how the UUID is generated.
     - **No External Dependencies**: It doesn’t rely on the browser’s crypto library, which might be useful in environments where that API isn’t available.
   - **Cons:**
     - **Weak Randomness**: `Math.random()` is not cryptographically secure, hence the UUIDs produced may not be unique enough for certain applications, leading to potential collisions.
     - **Complexity**: Writing a custom UUID generator can introduce bugs if not implemented correctly.

### Benchmark Results:

Based on the benchmark results, the performance metrics show that:

- The `crypto.randomUUID()` approach achieved approximately **3984.35 executions per second**.
- The `uuidv4()` implementation achieved around **2299.72 executions per second**.

This indicates that while `uuidv4()` is functional, the built-in `crypto.randomUUID()` is significantly more performant and should be preferred in scenarios where performance and security are critical.

### Alternatives:

Other alternatives for generating UUIDs include:

- **UUID libraries**: Libraries such as `uuid` (available via npm) provide various methods for generating UUIDs, including version 1 (based on timestamp) and version 4 (random). These libraries are well-optimized and handle edge cases effectively.
- **Custom Implementations**: One can always implement their own method for UUID generation, but it should be done with consideration of randomness and uniqueness.

In summary, this benchmark effectively highlights the differences between using a modern, secure API versus a custom, simpler approach for generating UUIDs in JavaScript. The choice should depend on the specific use case and requirements surrounding security, performance, and compatibility.

Related benchmarks:

crypto vs random (version: 1)

Comparing performance of: crypto vs random-string

Created: 7 months ago by: Guest

Jump to the latest result

crypto

random-string

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated 7 months ago):