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PTS_POI_Technical_FAQs_v3_April_2021.pdf PTS_POI_Technical_FAQs_v3_June_2022.pdf
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Modified p. 59 → 60
Q 226 February 2012: If hash functions are used to generate surrogate PAN values, the input to the hash function must use a salt with a minimum length of 64-bits. Are salt values required to be unique per transaction? A The salt may be unique per transaction, unique per a group of transactions, unique per device or unique per merchant.
Q 227 February 2012: If hash functions are used to generate surrogate PAN values, the input to the hash function must use a salt with a minimum length of 64-bits. Are salt values required to be unique per transaction? A The salt may be unique per transaction, unique per a group of transactions, unique per device or unique per merchant.