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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Fingerprint ¶
func Fingerprint(entity interface{}) []byte
Fingerprint returns a unique byte representation of the passed interface, which can be used as a pre-image for hashing, signing or creating IDs/identifiers of the entity. By default, MakeID uses RLP to encode the data. If the input defines its own canonical encoding by implementing Fingerprinter, it uses that instead. That allows removal of non-unique fields from structs or overwriting of the used encoder. Fingerprint servers two purposes: a) JSON (the default encoding) does not specify an order for the elements of arrays and objects, which could lead to different hashes of the same entity depending on the JSON implementation and b) the Fingerprinter interface allows to exclude fields not needed in the pre-image of the hash that comprises the Identifier, which could be different from the encoding for sending entities in messages or for storing them.
Types ¶
type Fingerprinter ¶
type Fingerprinter interface {
Fingerprint() []byte
}
Fingerprinter is a type that allows customization of the data used for the fingerprint of the entity. If a type does not implement Fingerprinter, RLP encoding is used.
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