Encrypt or sign a message — encrypt • emayili

Specify whether the message should be encrypted, signed or have a public key attached.

Usage

encrypt(msg, encrypt = TRUE, sign = TRUE, public_key = TRUE)

signature(msg, public_key = TRUE)

Arguments

msg: A message object.
encrypt: Whether to encrypt the message. If TRUE then the entire message will be encrypted using the private key of the sender.
sign: Whether to sign the message. If TRUE then the entire message will be signed using the private key of the sender.
public_key: Whether to attach a public key. If TRUE then the public key of the sender will be attached.

Value

A message object.

Details

The signature() function will add a digital signature to a message. It will also optionally include a copy of the sender's public key.

The encrypt() function will encrypt the contents of a message using the public key(s) of the recipient(s). It can also add a digital signature to the message (this is the default behaviour) and include a copy of the sender's public key. Signing happens before encryption, so the digital signature will only be accessible once the message has been decrypted. If a recipient no longer has access to their private key or their email client is unable to decrypt the message then they will not be able to access the message contents.

Examples

if (FALSE) { # \dontrun{
msg <- envelope(
  from = "flotilla@kriegsmarine.gov",
  to = "schunk@u-boat.com",
  subject = "Top Secret Message",
  text = "Immediate readiness. There are indications that the invasion has begun."
)
# Encrypt and sign the message.
msg %>% encrypt()
# Only encrypt the message.
msg %>% encrypt(sign = FALSE)
# Only sign the message.
msg %>% signature()
msg %>% encrypt(encrypt = FALSE)
} # }