Which key is required for encryption?
You need the recipient public key. The corresponding private key is required to decrypt the message.
Security
Encrypt text for one or more OpenPGP public keys directly in your browser.
Encrypt text for one or more OpenPGP public keys directly in your browser.
This tool runs in your browser. Your input is processed locally and is not uploaded.
Use this PGP message encryptor to encrypt text for recipients whose OpenPGP public keys you trust. Encryption takes place locally in your browser, and only holders of matching private keys can decrypt the resulting message.
You need the recipient public key. The corresponding private key is required to decrypt the message.
Yes. OpenPGP can encrypt one message so that several recipient private keys can open it.
It protects the message content, but surrounding metadata and the fact that an encrypted message exists may still be visible.