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[UB1-1336] Partial Encryption

Ian Freshwater requested to merge UB1-1336_partial_encryption into master

Adds support for prefix/suffix partial encryption rules.

➜  ubiq-python git:(master) ✗ pyenv exec python examples/ubiq_fpe_sample.py -P "local" -e "1234 1234 1234 1234" -n "Credit Card"                
ENCRYPTED cipher= aaaa aaI& )^w! 1234 

➜  ubiq-python git:(master) ✗ pyenv exec python examples/ubiq_fpe_sample.py -P "local" -d "aaaa aaI& )^w! 1234" -n "Credit Card"                
DECRYPTED plainText= 1234 1234 1234 1234

It's just a matter of modifying the fpe formatting in/out. This reduces the string down to the "encryptable" portion. I store the removed portions for prefix/suffix in each rule as a buffer to be put back after encryption.

Update 5/1:

  • Validate input characters AFTER rules applied
  • Merge master (fpe => structured, monorepo)
Edited by Ian Freshwater

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