blank.gif (43 bytes)

Church Of The
Swimming Elephant

Search: Error Cases Connected: An Internet Encyclopedia Error Cases

Up: Connected: An Internet Encyclopedia
Up: Requests For Comments
Up: RFC 1421
Up: 4. Processing of Messages
Up: 4.1 Message Processing Overview
Up: 4.1.2 Processing Procedures
Prev: Processing Steps
Next: 4.2 Encryption Algorithms, Modes, and Parameters Error Cases Error Cases

A variety of error cases may occur and be detected in the course of processing a received PEM message. The specific actions to be taken in response to such conditions are local matters, varying as functions of user preferences and the type of user interface provided by a particular PEM implementation, but certain general recommendations are appropriate. Syntactically invalid PEM messages should be flagged as such, preferably with collection of diagnostic information to support debugging of incompatibilities or other failures. RFC 1422 defines specific error processing requirements relevant to the certificate-based key management mechanisms defined therein.

Syntactically valid PEM messages which yield MIC failures raise special concern, as they may result from attempted attacks or forged messages. As such, it is unsuitable to display their contents to recipient users without first indicating the fact that the contents' authenticity and integrity cannot be guaranteed and then receiving positive user confirmation of such a warning. MIC-CLEAR messages (discussed in Section of this RFC) raise special concerns, as MIC failures on such messages may occur for a broader range of benign causes than are applicable to other PEM message types.

Next: 4.2 Encryption Algorithms, Modes, and Parameters

Connected: An Internet Encyclopedia Error Cases


Protect yourself from cyberstalkers, identity thieves, and those who would snoop on you.
Stop spam from invading your inbox without losing the mail you want. We give you more control over your e-mail than any other service.
Block popups, ads, and malicious scripts while you surf the net through our anonymous proxies.
Participate in Usenet, host your web files, easily send anonymous messages, and more, much more.
All private, all encrypted, all secure, all in an easy to use service, and all for only $5.95 a month!

Service Details

Have you gone to church today?
All pages İ1999, 2000, 2001, 2002, 2003 Church of the Swimming Elephant unless otherwise stated
Church of the Swimming Elephantİ1999, 2000, 2001, 2002, 2003 is a wholly owned subsidiary of Packetderm, LLC.

Packetderm, LLC
210 Park Ave #308
Worcester, MA 01609