Devices and techniques to perform entropy-based randomness via a contactless card

A computer-implemented method, comprising:

• collecting, by processing circuitry of a contactless card, data from a plurality of sensors of the contactless card;
• randomly sampling, by the processing circuitry, the data from the plurality of sensors to generate a seed value;
• utilizing, by the processing circuitry, the seed value with a cryptographic algorithm to generate a random number;
• generating, by the processing circuitry, a pair of keys with a key generation algorithm using the seed value, the pair of keys comprising a private key and a public key;
• and
• storing, by the processing circuitry, the pair of keys in memory of the contactless card.

A contactless card, comprising:

• one or more sensors;
• processing circuitry coupled with the one or more sensors;
• memory coupled with the processing circuitry and the one or more sensors, the memory to store instructions, that when executed by the processing circuitry, to cause the processing circuitry to:
• receive data from at least one of the one or more sensors;
• generate a random sample of the data by randomly sampling a portion of the data;
• receive a request for a random number from a device;
• apply a cryptographic algorithm to the random sample to generate the random number;
• and
• send, in response to the request, the random number to the device.