Jonah: experience implementing PKIX reference freeware
Mary Ellen Zurko, John L. Wray, Ian Anthony Morrison, Mike Shanzer, Mike Crane, Pat F. Booth, Ellen McDermott, W. M. Macek, Ann Graham, Jim Wade, Tom Sandlin · USENIX Security Symposium · 1999
IBM made a business decision to promote an open, secure, interoperable and integrateable environment by embracing the IETF's Public Key Infrastructure (X.509) standards, developing a reference implementation of the core set, and giving it away as freeware. We discuss the architecture of this reference code, emphasizing lessons learned from implementing the standards in an integrated PKI system.