How Enterprises anonymize/mask data before sharing it with Crayon Transaction Data Customer ID Merchant Name Card Number Date Amount Enterprise has PII data 171127 The Educated Pot 4850909284846029 25-03-2021 35.08 in its data lake 171128 The Hidden Chariot 9840203948230982 25-03-2021 3.91 171126 The Thunder Plum 8347104982344983 25-03-2021 4.84 171125 The Smelly Growth 1458710875243090 25-03-2021 23.95 Customer Id Mapping Card Number Mapping Enterprise creates Customer ID Masked Customer ID Card Number Masked Card Number anonymized data using 171125 b09c16fcd90889cfdaa59ac9ac76894e 1458710875243090 75284494dd043356b727de882fea084a Hashing Algorithms 171126 bcb39d95c667faa134415186c0e8fbdf 8347104982344983 b4991fc9706f9a71dd40cd1856822b22 (For example, using MD5) 171127 8e69f6b56f0905a684f20c8ad4f2e702 4850909284846029 dc0a6d660cdd3216c546420095130ce7 171128 043f134b2b9469d5e08d8780047bab41 9840203948230982 a2d9dc79b1a280ee01e921af26b492be These mapping tables can be stored in the Enterprise’s data lake Masked Transaction Data Masked Customer ID Merchant Name Masked Card Number Date Amount Enterprise shares 8e69f6b56f0905a684f20c8ad4f2e702 The Educated Pot dc0a6d660cdd3216c546420095130ce7 25-03-2021 35.08 anonymized data (No 043f134b2b9469d5e08d8780047bab41 The Hidden Chariot a2d9dc79b1a280ee01e921af26b492be 25-03-2021 3.91 PII) with Crayon bcb39d95c667faa134415186c0e8fbdf The Thunder Plum b4991fc9706f9a71dd40cd1856822b22 25-03-2021 4.84 b09c16fcd90889cfdaa59ac9ac76894e The Smelly Growth 75284494dd043356b727de882fea084a 25-03-2021 23.95 Crayon can enable the Enterprise to mask the data