PGP Message Encryption Online — encrypt and decrypt PGP messages
securely
in your browser using client-side OpenPGP cryptography.
This tool lets you generate strong 4096-bit PGP keys, encrypt
plaintext into
ASCII-armored PGP messages, and decrypt PGP blocks without uploading
messages, keys, or passphrases to any server.
It supports multiple public keys (multi-recipient encryption),
automatic PGP block detection, and preserves message formatting —
making it ideal for secure email communication, API secrets, and sensitive text
sharing.
Explore our complete set of PGP encryption tools:
All PGP encryption and decryption is performed entirely in your browser.
We do not store, log, or transmit any messages, keys, or passphrases.
This tool is intended for educational and personal use only.
Do not use online tools to protect real production secrets.
What is PGP Message Encryption?
PGP message encryption secures text using public-key cryptography.
The sender encrypts a message with the recipient’s public key,
and only the matching private key can decrypt it.
PGP combines asymmetric encryption, symmetric encryption, hashing, and
digital signatures to ensure confidentiality and integrity.
How PGP Message Encryption Works
- A PGP key pair (public and private) is generated.
- The message is encrypted using a randomly generated symmetric session key.
- The session key is encrypted using the recipient’s public key.
- The encrypted message is output as an ASCII-armored PGP block.
How to Encrypt a PGP Message Online
- Generate or paste a recipient’s PGP public key.
- Enter the plaintext message you want to encrypt.
- Click Encrypt to generate an armored PGP message.
- Share the encrypted message securely with the recipient.
Common PGP Encryption & Decryption Errors (and Fixes)
PGP Decryption Failed: Wrong Private Key
This occurs when the private key does not match the public key used for encryption.
Fix: Ensure you are using the correct private key for the intended
recipient.
Incorrect Passphrase
Encrypted private keys require the correct passphrase to unlock them.
Fix: Verify the passphrase and avoid trailing spaces or encoding
issues.
Invalid or Corrupted PGP Block
PGP messages may fail if the armored block is truncated or altered.
Fix: Ensure the entire -----BEGIN PGP MESSAGE-----
block is intact.
Unsupported Key Algorithm
Older or non-standard PGP keys may not be supported.
Fix: Use modern RSA keys (2048+ bits) generated via our
PGP Key Generator.
You can further analyze cryptographic issues using our
Crypto Safety Validator.
Secure Usage Guidelines (When NOT to Use PGP)
PGP vs RSA Encryption
RSA is a cryptographic algorithm, while PGP is a complete encryption system.
PGP combines RSA, symmetric encryption, hashing, and digital signatures.
If you only need raw RSA operations, try our
RSA Encryption Tool.
Related Encryption Tools
Frequently Asked Questions
Why does PGP decryption fail?
Most failures are caused by incorrect private keys, wrong passphrases,
or corrupted PGP message blocks.
Is PGP message encryption secure?
Yes, when used with strong keys and modern algorithms,
PGP provides strong confidentiality and integrity.
Can I encrypt messages for multiple recipients?
Yes. PGP supports encrypting a message for multiple public keys simultaneously.
Should I use PGP for file encryption?
For files, use
PGP File Encryption
instead of message encryption.
Support This Free Tool!
I build these tools to give you fast, secure, privacy-friendly utilities—free and
signup-free.
Buying me a coffee helps keep the project running and supports
new features.
Thank you for helping this tool thrive!
