In an embodiment of the present disclosure, an embodiment includes a user device comprises a conversion engine configured to receive a biometric file comprising biometric identification information of a user and convert the biometric file into a first numeric representation. The user device further comprises a hashing engine configured to create a superimposed numeric representation by performing a convolution operation on the first numeric representation and a second numeric representation, wherein the second numeric representation is based on a key file that is different from the biometric file. The hashing engine is further configured to convert the superimposed numeric representation into a hash value, send, over a network connection, the hash value for authentication, and receive a message indicating whether authentication was successful.