PGP Encryption & Decryption Online

Created by:Dhiraj Reviewed by:Devglan Team

PGP Message Encryption Online - encrypt and decrypt PGP messages entirely in your browser. No sign-up, no server upload - your messages, keys, and passphrases never leave your device.

Explore our complete set of PGP encryption tools: PGP Key Generator & Inspector, PGP File Encryption & Decryption.

🔑 PGP Key Generator Client-Side

🔐 PGP Message Encryption

🔓 PGP Message Decryption

Security Notice

All PGP message encryption and decryption is performed locally in your browser. Messages and keys are never transmitted to any server.

What is PGP Message Encryption?

PGP (Pretty Good Privacy) secures messages using public-key cryptography. The sender encrypts with the recipient’s public key — only the matching private key can decrypt it. PGP combines asymmetric encryption, symmetric session keys, hashing, and digital signatures to guarantee both confidentiality and integrity.

100% Client-Side
Keys & messages stay in your browser only
4096-bit RSA / ECC Keys
Generate strong key pairs instantly
Multi-Recipient
Encrypt for multiple public keys at once

How PGP Message Encryption Works

1
Generate Key Pair
Create a PGP public & private key (RSA or ECC).
2
Encrypt the Message
A random symmetric session key encrypts your plaintext.
3
Lock the Session Key
The session key is encrypted with the recipient’s public key.
4
Share Safely
Send the ASCII-armored PGP block to the recipient.

How to Encrypt a PGP Message Online

  1. Generate or paste the recipient’s PGP public key above.
  2. Enter the plaintext message you want to encrypt.
  3. Click Encrypt Message to produce an armored PGP block.
  4. Share the encrypted output with the recipient over any channel.

Common PGP Errors & Fixes

Wrong Private Key The private key does not match the public key used during encryption.

Fix: Use the private key that corresponds to the recipient’s public key.

Incorrect Passphrase Encrypted private keys require the exact passphrase set at key-generation time.

Fix: Check for trailing spaces, encoding issues, or copy-paste artifacts.

Invalid or Truncated PGP Block Decryption fails if the armored block is cut off or altered during transfer.

Fix: Copy the complete block including -----BEGIN PGP MESSAGE----- and -----END PGP MESSAGE-----.

Unsupported Key Algorithm Older or non-standard PGP keys may not be recognised by modern libraries.

Fix: Generate a fresh RSA 4096-bit or ECC key using the PGP Key Generator above.

For deeper cryptographic analysis, try our Crypto Safety Validator.

When NOT to Use PGP Message Encryption

PGP vs RSA Encryption

RSA is a cryptographic algorithm; PGP is a complete encryption system that uses RSA alongside symmetric encryption, hashing, and digital signatures. For raw RSA operations, use our RSA Encryption Tool.

Related Encryption Tools

PGP Key Generator & Inspector PGP File Encryption & Decryption AES Encryption & Decryption RSA Encryption & Decryption Crypto Safety Validator Bcrypt Hash Generator

Frequently Asked Questions

Most failures stem from using the wrong private key, an incorrect passphrase, or a corrupted / truncated PGP message block. Check all three before retrying.
Yes — when used with strong, modern keys (RSA 4096-bit or ECC Curve25519), PGP provides industry-standard confidentiality and message integrity.
Yes. Paste multiple public keys in the Recipient Public Key(s) field — PGP encrypts the session key separately for each recipient so any one of them can decrypt with their own private key.
For files, use the dedicated PGP File Encryption tool. Message encryption is optimised for text; file encryption handles binary data and large payloads correctly.
No. All encryption and decryption runs entirely in your browser via the OpenPGP.js library. No messages, keys, or passphrases are transmitted to any server at any point.

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