An encryption/decryption system to provide a means for user authentication and document authentication using face biometrics. The encryption/decryption system comprises a key storage means for storing a plurality of keys, a face authentication means for determining whether a prospective user of a key in the plurality of keys is the associated user of the key, an encryption/decryption means for encrypting and decrypting data using the plurality of keys when the face authentication means authenticates the prospective user, and a document authentication means that authenticates the user for access to their plurality of keys to digitally sign a document and display the users face used to authenticate access to their plurality of keys in or associated with the document acting as a witness to the signing of the document.