hmacSignatureKey property
A string with which to salt the notification(s) before hashing. If this field is provided, a hash value will be included under the notification header HmacSignature and the hash protocol will be included under the notification header Protocol. A notification body along with its hmacSignatureKey and Protocol can be used to calculate a hash value; matching this hash value with the HmacSignature will ensure that the notification body has not been tampered with or corrupted. >Must be a 32-byte hex-encoded string (i.e. a string containing 64 hexadecimal characters; e.g. "b0ea55c2fe60d4d1d605e9c385e0e7f7e6cafbb939ce07010f31a327a0871f27"). The omission of this field will preclude the provision of the HmacSignature and Protocol headers in notification(s).
Implementation
@BuiltValueField(wireName: r'hmacSignatureKey')
String? get hmacSignatureKey;