Potential fix for code scanning alert no. 84: Insecure randomness

[Dargon789]

Summary by Sourcery

Bug Fixes:

• Replace insecure Math.random use in generateId with crypto.getRandomValues to generate cryptographically secure randomness.

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Replace insecure Math.random with crypto.getRandomValues for ID generation in DappTransport to address security alert.

Class diagram for updated DappTransport ID generation

classDiagram
class DappTransport {
  +generateId(): string
}
DappTransport : -generateId() now uses crypto.getRandomValues instead of Math.random

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File-Level Changes

Change	Details	Files
Secure randomness for ID generation	Replaced Math.random usage with window.crypto.getRandomValues on a Uint32Array Converted the random value to a base-36 string instead of taking a substring from Math.random() Concatenated date-based prefix with the secure random string for the final ID	packages/wallet/dapp-client/src/DappTransport.ts

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[snyk-io]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues

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[gemini-code-assist]

Summary of Changes

Hello @Dargon789, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a critical security concern by upgrading the random number generation mechanism used for creating unique identifiers. It transitions from a potentially insecure pseudo-random number generator to a cryptographically secure one, thereby enhancing the overall security posture of the application and mitigating risks associated with predictable IDs.

Highlights

• Security Fix: Replaced Math.random() with window.crypto.getRandomValues() in the generateId() method within DappTransport.ts to ensure cryptographically secure random ID generation, addressing code scanning alert fix: update #84.

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[gemini-code-assist]

Code Review

This pull request addresses an 'Insecure randomness' code scanning alert by replacing Math.random() with the cryptographically secure window.crypto.getRandomValues(). While this is a good security improvement, the current implementation changes the format of the generated ID by making the random part have a variable length. I've provided a suggestion to fix this potential issue by preserving the fixed-length format of the random string, thus avoiding potential regressions.