Sign a message with a private key

Generates a base64‑encoded digital signature for a message using a private key. The signature proves that the message was approved by the owner of the address or the holder of the private key.

Usage

mc_sign_message(conn, address_or_key, message)

Arguments

conn

A connection object created by mc_connect.

address_or_key

Character string. Either a wallet address (must belong to the node's wallet) or a private key in Wallet Import Format (WIF).

message

Character string. The text message to sign.

Value

A character string containing the base64‑encoded signature.

See also

mc_verify_message to verify a signature, mc_get_new_address to generate a new address.

Other cryptography: mc_verify_message()

Examples

if (FALSE) { # \dontrun{
# Sign using an address in the wallet
sig <- mc_sign_message(conn, "1A...", "Hello, MultiChain!")

# Sign using a raw private key
sig <- mc_sign_message(conn, "L5...", "Important agreement")
} # }