CODEWITHSUNDEEP
firebasefirebase-authentication
HelloWorld
HelloWorld

Reputation: 327

How is Firebase's authentication UID generated?

My Question: How is Firebase's Auth UID generated?

Current Scenario: I want to give each user (who registers on my website) a good looking unique id. Examples: a 6-digit number, a mix of digits and strings (like korean5684, indian8439) and I don't want any collisions.

So, I'm looking for a way to hash from Firebase's Auth UID to a custom ID with as few collisions as possible. For efficient hashing, I need to know the way the UID is generated.

Thanks in advance...

Upvotes: 0

Views: 669

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 598765

The algorithm used for Firebase Authentication UIDs is undocumented, has changed over time, and is dependent on the provider(s) used. You should not base your implementation on any assumption/knowledge on how the UID is generated.

Upvotes: 3

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