CODEWITHSUNDEEP
algorithmhash
chrispytoes
chrispytoes

Reputation: 1897

Need a function to create a smaller hash from a larger hash

Basically I have 24 digit hexadecimal id values. I need a function that can take one of these ids and turn it into a 10 digit decimal value. It does not need to be cryptographically secure. I just need to ensure that the same input will always get the same output, and that the resulting value has as low of a chance as possible to be the same with different inputs.

Upvotes: 2

Views: 73

Answers (1)

Kaidul
Kaidul

Reputation: 15885

Something like this should work as you are asking - 

shorterHash := MD5(hexId) # 16 byte
return shortedHash.substring(0, 10) # this is still non-colliding enough

I hope there are many standard implementations of MD5 on your language on internet.

Upvotes: 2

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