Crypto Sender

Name: Crypto Sender
Rating: 5 (2 reviews)
Author: Raffaele

**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.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-08-24

Rating:

5.00

(2)

Version:

4.2

Last updated: 2026-08-15

Features & Capabilities

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.

User Growth & Download Statistics

Add-on

By:

Raffaele

Daily users:

Rating:

5.00

(2)

Version:

4.2 Last updated: 2026-08-15

Version code:

6416532

Creation date:

2025-12-15

Risk:

Permissions:

Size:

39.14KB

Email:

r.*****@gmail.com

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-08-24

Compare stats and ranking:

Ranking

# 72,248 ▼ 631

Other rankings

#52 in earn crypto keyword 37 #71 in crypto keyword 29 ▲ 1#106 in encrypt keyword 22 ▲ 2#163 in wa sender keyword 34 ▲ 1

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Raffaele

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/crypto-sender/

Email:

r.*****@gmail.com

User Reviews

This extension is a little gem! In just a few clicks, I can have a fully encrypted message ready to be shared via email or messaging app. Knowing all encryption happens on my machine and that nothing is stored externally makes it my go-to for private communication. It's been updated recently and works perfectly with the latest Firefox. For a free tool with this level of privacy, it's an easy 5-star rating. More people should know about it!

by Ma*****, 2025-12-18

I've been looking for a simple, trustworthy way to share sensitive information like passwords or private notes without relying on a third-party service. Crypto Sender is perfect. It does everything locally in my browser—no data goes to any server, which is a huge relief. The fact that it's open source gives me extra confidence in its security. For anyone serious about privacy, this is an essential Firefox add-on.

by Al*****, 2025-12-18

View all user reviews ›

Is Crypto Sender Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Crypto Sender requires very minimum permissions.

Risk impact analysis details

High Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Crypto Sender is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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