If it's salted, you can't share it with a third-party and determine who your customers in common are. (That's the point of the salt; to mean that my_hash(X) != your_hash(X)).
You actually can join it when the salt provider is a dedication shared entity. The entity rehashes the data of both organizations to use a shared salt. That is how different organizations join hashed data.
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If it's salted, you can't share it with a third-party and determine who your customers in common are. (That's the point of the salt; to mean that my_hash(X) != your_hash(X)).
You actually can join it when the salt provider is a dedication shared entity. The entity rehashes the data of both organizations to use a shared salt. That is how different organizations join hashed data.