🔐 Text Encryption Sharing

Securely share text in Base64 format with AES-GCM encryption. Encryption and decryption is performed using a password.

🔒 Encryption

🔓 Decryption

🛡️ All processing is done in your browser. No text or passwords are sent to a server.

Usage and Application Examples

  • Send sensitive information securely via email or chat
  • Share passwords and encrypted text through separate channels to increase security
  • Store notes and passwords in encrypted form.
  • All processing is done within the browser, so there is no need to worry about information leakage to external servers

What is Encrypted Text Share?

A secure file-sharing tool that encrypts text messages using AES-GCM encryption before Base64 encoding. This allows you to safely share sensitive information over insecure channels. All encryption and decryption happens locally in your browser; no data touches external servers, ensuring complete privacy.

How to Use

Paste or type your sensitive text into the input field. Set a strong password that only you and the recipient know. Click encrypt to generate an encoded string containing your encrypted message. Share this encrypted string through any channel—email, messaging app, or chat. The recipient pastes the encrypted string into the tool's decryption field, enters the matching password, and clicks decrypt to reveal your original message. The entire process occurs locally in the browser, so no intermediary service sees your unencrypted data.

Use Cases

• Sensitive credential sharing: System administrators securely transmit passwords or API keys to team members without exposing them in plain text across email or corporate messaging systems.
• Confidential business communications: Consultants and contractors share client-sensitive information, financial details, or strategic plans securely across public networks or less-trusted communication channels.
• Privacy-conscious personal communication: Individuals sharing private information—medical details, legal documents, financial records—with trusted parties over non-encrypted messaging platforms.
• Compliance-regulated industries: Healthcare and legal professionals comply with data protection regulations by encrypting client information before transmission through standard corporate communication channels.

Tips & Insights

AES-GCM is military-grade encryption, significantly stronger than basic password protection. Password strength is critical—longer passwords with mixed character types exponentially increase decryption difficulty for attackers. Share the password through a separate channel from the encrypted message; if someone intercepts both together, encryption is compromised. Base64 encoding makes encrypted data readable in text-only channels but isn't itself encryption—the security comes entirely from AES-GCM. Browser-side encryption means your data never travels to servers, ideal for air-gapped environments or maximum privacy scenarios.

Frequently Asked Questions

What is AES-GCM?

AES-GCM (Advanced Encryption Standard - Galois/Counter Mode) is one of the advanced encryption standards. It is widely used in modern web applications because it is highly secure and allows for tamper detection as well as data encryption.

Is encrypted text secure?

Yes, it uses AES-GCM 256-bit encryption and cannot be decrypted without the correct password. Also, all processing is completed within the browser, so no data or passwords are sent to the server.

If I forget my password, can I decrypt it?

No, if you forget your password, you will not be able to decrypt it; AES-GCM is a strong encryption method and there is no way to recover your data without the correct password. Please keep your password in a safe place.

How do you share encrypted text?

The Base64 text displayed after encryption can be copied and sent by any method, such as email, chat, or SNS. It is recommended that the recipient be given the encrypted text and password through separate channels.

What is the Web Crypto API?

The Web Crypto API is a cryptographic function built into the browser, available directly from JavaScript and requiring no external libraries. It is available in all major modern browsers (Chrome, Firefox, Safari, Edge).

Is there a limit to the length of text that can be encrypted?

Technically, it is possible to encrypt as much as the browser memory will allow, but for practical purposes, we recommend text up to several MB. Very long texts may take longer to process.

Can multiple people decrypt the same message with one password?

Yes, as long as everyone knows the password and has access to the encrypted text, they can all decrypt it independently. Share the encrypted text and password separately through different communication channels for maximum security.

What browser features are required for encryption to work?

This tool uses the Web Crypto API, which is supported in all modern browsers (Chrome, Firefox, Safari, Edge). Older browser versions may not support this feature, so ensure your browser is up to date.

How should I share the encrypted text and password safely?

Never share the encrypted text and password through the same communication channel - use different methods (email for text, phone call for password, etc.). This separation ensures that even if one channel is compromised, the encrypted message remains secure.

Can I encrypt files or only text?

Currently, this tool is designed for text-based content only. For files, you'll need to use dedicated file encryption tools or convert files to text format before encrypting them here.

How is the encryption key generated from my password?

Your password is processed through a key derivation function (PBKDF2) that generates a secure encryption key. This process uses a salt value to ensure the same password generates different keys for different messages, preventing pattern analysis.

What happens if I lose the encrypted text?

If you delete the encrypted text, there's no way to recover it - keep backups of important encrypted messages. Since encryption is one-way, you cannot regenerate the encrypted text from the original message, so storing it safely is essential.