US Patent 11687930 Systems and methods for authentication of access tokens

Systems and methods for authentication may include a first device including a memory, a communication interface, and one or more processors. The memory may include a counter value, transmission data, and at least one key. The one or more processors may be in communication with the memory and communication interface. The one or more processors may be configured to create a cryptogram using the at least one key and counter value, wherein the cryptogram includes the counter value and the transmission data; transmit the cryptogram via the communication interface; update the counter value after cryptogram transmission; receive an encrypted access token via the communication interface; decrypt the encrypted access token; store the decrypted access token in the memory; and transmit, after entry of the communication interface into a communication field, the access token via the communication interface for access to one or more resources, wherein the access token is encrypted.