Periodic generation of random function in the cloud

A method comprising:

• identifying an epoch as a current epoch based on a current system time of a node;
• computing, by the node, a seed value based on a start time of the epoch and a secret;
• generating, by a randomization service of the node, a plurality of ephemeral tokens for a set of sensitive data based on the seed value, each ephemeral token having a usable life defined by the epoch;
• associating each sensitive data instance in the set of sensitive data with a particular ephemeral token of the plurality of ephemeral tokens to create a mapping structure in a main memory of the node;
• and
• configuring a tokenization service of the node to process tokenization requests using the mapping structure,
• wherein the node is one of a plurality of nodes forming a distributed tokenization platform, and wherein each node of the plurality of nodes is configured to independently create the mapping structure using the secret without synchronizing with other nodes in the plurality of nodes.

A non-transitory computer-readable storage medium comprising computer-readable instructions that upon execution by a processor of a computing device cause the computing device to:

• identify a first epoch as a current epoch based on a current system time of a node;
• compute, by the node, a seed value based on a start time of the first epoch and a secret;
• generate, by a randomization service of the node, a plurality of ephemeral tokens for a set of sensitive data based on the seed value, each ephemeral token having a usable life defined by the first epoch;
• associate each sensitive data instance in the set of sensitive data with a particular ephemeral token of the plurality of ephemeral tokens to create a mapping structure in a main memory of the node;
• and
• configure a tokenization service of the node to process tokenization requests using the mapping structure,
• wherein the node is one of a plurality of nodes forming a distributed tokenization platform, and wherein each node of the plurality of nodes is configured to independently create the mapping structure using the secret without synchronizing with other nodes in the plurality of nodes.