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Author
Bart Butler
Bart is the CTO of Proton, the company behind Proton Mail and Proton VPN. An expert in email encryption, Bart was previously a physicist at CERN working on the ATLAS experiment. He was also a postdoctoral researcher at Harvard and received his PhD in Physics from Stanford University.
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![encrypted email authentication](https://res.cloudinary.com/dbulfrlrz/images/f_auto,q_auto/v1707578049/wp-pme/protonmail_authentication/protonmail_authentication.jpg?_i=AA)
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![OpenPGPjs email encryption library](https://res.cloudinary.com/dbulfrlrz/images/f_auto,q_auto/v1707578243/wp-pme/OpenPGPjs_email_encryption/OpenPGPjs_email_encryption.jpg?_i=AA)
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