# Crypto Sender

> \*\*Crypto Sender\*\* is a Firefox extension that allows you to send encrypted messages securely and privately. All encryption operations are performed locally in your browser, ensuring that your messages remain confidential.

Canonical page: [https://chrome-stats.com/d/crypto-sender](https://chrome-stats.com/d/crypto-sender)

## Overview

- **ID:** `crypto-sender`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Raffaele
- **Category:** privacy-security
- **Daily users:** 1
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 4.2
- **Last updated:** 2026-08-15
- **First published:** 2025-12-15
- **Size:** 39 KB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/crypto-sender/)

## Description

Security Hardening & NIST Compliance

• Fixed IV length to 12 bytes per NIST SP 800-38D (was user-configurable)
• Added version byte to ciphertext format for future compatibility
• Password cleared from memory after each encrypt/decrypt operation
• Removed deprecated clipboard fallback (execCommand)
• Added input validation bounds for PBKDF2 iterations
• Verified against NIST CAVP Known-Answer Test vectors (10/10 PASS)
• Manifest V3 compliance fixes
• Updated UI labels and settings descriptions

Note: Messages encrypted with v4.1 are NOT compatible with v4.2 due to the new versioned format. Please re-encrypt any stored messages after updating.

## Rankings

- #74,527 — Overall
- #55 — earn crypto
- #71 — crypto
- #107 — encrypt
- #171 — wa sender

## Permissions and access

### Permissions

- `storage`
- `clipboardWrite`
- `clipboardRead`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/crypto-sender)