Optimized authentication system for a multiuser device

A method, comprising:

• encrypting, by a processor associated with a user device, a folder stored on the user device based at least in part on utilizing a symmetric key;
• encrypting, by the processor based at least in part on utilizing a public key associated with the user device, the symmetric key to determine a single-encrypted symmetric key;
• transmitting, by the processor to a biometric unit available to the user device, a request to capture biometric information;
• verifying, by the processor, the biometric information based at least in part on a comparison of the biometric information with stored biometric information;
• selectively transmitting, by the processor to a trusted device located on the user device and based at least in part on successful verification of the biometric information, an encryption request to encrypt the single-encrypted symmetric key based at least in part on utilizing a trusted key that is generated by the trusted device, thereby determining a double-encrypted symmetric key;
• and
• storing, by the processor, the single-encrypted symmetric key and the double-encrypted symmetric key in a memory associated with the user device.

A non-transitory computer-readable medium configured to store instructions, which when executed by a processor associated with a user device, configure:

• the processor to encrypt, based at least in part on utilizing a symmetric key, a folder stored on the user device;
• the processor to encrypt, based at least in part on utilizing a public key associated with the user device, the symmetric key to determine a single-encrypted symmetric key;
• the processor is configured transmit, to a biometric unit available to the user device, a request to capture biometric information;
• the processor to verify the biometric information based at least in part on a comparison of the biometric information with stored biometric information;
• the processor to selectively transmit, to the trusted device based at least in part on successful verification of the biometric information, an encryption request to encrypt the single-encrypted symmetric key based at least in part on utilizing a trusted key that is generated by the trusted device, thereby determining a double-encrypted symmetric key;
• and
• the processor to store the single-encrypted symmetric key and the double-encrypted symmetric key in a memory associated with the user device.