Reputation: 485
I know GUID is not random and that should not be used for security purposes, but how many random digits does it provide ? (To which extent can it be used as source of entropy for any task that does not require security)
Of 32 digits in example, maybe 4/5 are random?
Upvotes: 0
Views: 178
Reputation: 32908
A version 4 UUID (also known as GUID) contains 122 randomly chosen bits; the other 6 bits are fixed. (There are other versions of UUIDs; see RFC 4122.) UUIDs are intended as identifiers, not as a source of randomness.
Upvotes: 2