Xifratge de text

All encryption is performed locally in your browser using the Web Crypto API. Your data never leaves your device.

Text to Encrypt

Algoritme:

Secret Key (minimum 32 characters)

Encrypted Result

Què és el xifratge de text?

El xifratge de text és el procés de convertir text llegible (text pla) en un format il·legible (text xifrat) per protegir la seva confidencialitat. Només aquells amb la clau de desxifratge correcta poden llegir el missatge original.

Supported Algorithms:

Symmetric Encryption (AES):

AES-GCM (Recommended): Provides authenticated encryption with associated data (AEAD). Most secure for general use.
AES-CBC: Traditional block cipher mode. Requires padding.
AES-CTR: Counter mode. Converts block cipher to stream cipher.

Asymmetric Encryption (RSA):

RSA-OAEP: Uses public key for encryption. Limited to ~190 characters due to key size constraints. Use for encrypting small data or symmetric keys.

Output Format:

For AES algorithms: JSON with base64-encoded components

{"iv": "base64_encoded_iv", "data": "base64_encoded_ciphertext"}

For RSA: Base64-encoded ciphertext only (no IV needed)

base64_encoded_ciphertext

This format is compatible with most encryption/decryption tools and libraries.

Com utilitzar l'eina de xifratge de text

Introduïu el text que voleu xifrar.
Proporcioneu una contrasenya.
Feu clic a "Xifra".
Copieu el text xifrat i deseu-lo de manera segura.
Copy the encrypted result and keep your secret key safe - you'll need it to decrypt the data later.
Use the eye icon to show/hide your secret key for security.

Additional Tips:

For AES: The secret key is auto-generated or you can provide your own (minimum 32 characters)
For RSA: You need a public key in PEM format. Generate one using the Key Generator tool or OpenSSL
RSA limitations: Can only encrypt short text (~190 characters). For longer texts, use AES algorithms
Output encoding: Base64 is used for compatibility with other encryption tools and libraries

Security Notes

This tool uses the browser's native Web Crypto API for strong encryption. AES-GCM provides authenticated encryption with associated data (AEAD), making it the recommended choice for most applications. AES-CBC provides traditional block cipher encryption. Always keep your secret key secure and never share it publicly. The encrypted output includes both the initialization vector (IV) and encrypted data in JSON format.

Important Notes:

All encryption happens locally in your browser using the Web Crypto API
The IV (Initialization Vector) is automatically generated for each encryption and must be saved with the ciphertext
For RSA encryption, you encrypt with a public key; decryption requires the corresponding private key
Store your secret keys securely - if lost, encrypted data cannot be recovered
Base64 encoding makes the output portable and compatible with most tools and programming languages

Xifreu text de manera segura amb AES-256-GCM directament al navegador. No s'envien dades als servidors.

Necessites desxifrar text? Prova la nostra Eina de Desxifratge de Text →

Keywords: xifratge de text, AES-256, xifratge de missatges, xifratge segur