signature
A string representing the properties of a specific promotional offer, cryptographically signed.
Declaration
var signature: String { get }Mentioned in
Discussion
The signature is a string signed with your private key that represents the properties of a specific promotional offer. To keep your private key secure, generate the signature on a server.
Generate the signature using the Elliptic Curve Digital Signature Algorithm (ECDSA) with SHA 256. For more information, see Generating a signature for promotional offers.