A Layman's Guide to a Subset of ASN.1, BER, and DER An RSA Laboratories Technical Note Burton S. Kaliski Jr. Revised November 1, 1993 Supersedes June 3, 1991 version, which was also published as NIST/OSI Implementors' Workshop document SEC-SIG-91-17. PKCS documents are available by electronic mail to . Copyright (C) 1991-1993 RSA Laboratories, a division of RSA Data Security, Inc. License to copy