A Proposed Standard Format for RSA Cryptosystems. - Philip R. Zimmermann (Computer, 1986)

PGP Message Exchange Formats. - Derek Atkins; William Stallings; Philip R. Zimmermann (RFC, 1996)

Which PKI (public key infrastructure) is the right one? (panel session). - Carlisle M. Adams; Mike Burmester; Yvo Desmedt; Michael K. Reiter; Philip R. Zimmermann (CCS, 2000)

ZRTP: Media Path Key Agreement for Unicast Secure RTP. - Philip R. Zimmermann; Alan Johnston; Jon Callas (RFC, 2011)

Post-quantum WireGuard. - Andreas Hülsing; Kai-Chun Ning; Peter Schwabe; Florian Weber; Philip R. Zimmermann (IACR Cryptol. ePrint Arch., 2020)