usenix.defective-sgn-enc: target: https://www.usenix.org/legacy/publications/library/proceedings/usenix01/full_papers/davis/davis_html/index.html title: "Defective Sign Encrypt in S/MIME, PKCS7, MOSS, PEM, PGP, and XML. 65-78" author: - ins: Don Davis name: Don Davis date: 2001