Encryption / Decryption

Once you have the user's keys, you can easily encrypt and decrypt messages:

Encrypt

Simply pass the public key of the receiver and the message to obtain the encrypted message.

const encryptedMessage = encrypt(receiverPublicKey: Uint8Array, 
message: string | Uint8Array, toHex?: boolean);

Parameters description

Parameter	Description	Optional
receiverPublicKey	The public key of the receiver, obtained from Ceramic and the user's address	No
message	Message as Uint8Array or string	No
toHex	Whether to convert the encrypted message to a hexadecimal string or not.	Yes

Decrypt

Likewise, pass the public key of the sender and the message to obtain the decrypted message.

const decryptedMessage = encrypt(senderPublicKey: Uint8Array, 
message: string | Uint8Array);

Parameters description

Parameter	Description	Optional
senderPublicKey	The public key of the sender, obtained from Ceramic and the user's address	No
message	Encrypted message as Uint8Array or string	No