Ronald John Fitzgerald Cramer (born 3 February 1968 in Haarlem) is a professor at the Centrum Wiskunde & Informatica (CWI) in Amsterdam and the University of Leiden. He obtained his PhD from the University of Amsterdam in 1997. Prior to returning to the Netherlands he was at the University of Aarhus.
- R.J.F. Cramer, 1968 - at the University of Amsterdam Album Academicum website
- Cramer, R.; Shoup, V. (2003). "Design and Analysis of Practical Public-Key Encryption Schemes Secure against Adaptive Chosen Ciphertext Attack". SIAM Journal on Computing. 33 (1): 167–226. doi:10.1137/S0097539702403773.
- "Ronald Cramer". Royal Netherlands Academy of Arts and Sciences. Archived from the original on 29 January 2016. Retrieved 29 January 2016.