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PEM data is commonly stored in files with a ".pem" suffix, a ".cer" or ".crt" suffix (for certificates), or a ".key" suffix (for public or private keys). [3] The label inside a PEM file represents the type of the data more accurately than the file suffix, since many different types of data can be saved in a ".pem" file.
The Cryptographic Message Syntax (CMS) is the IETF's standard for cryptographically protected messages. It can be used by cryptographic schemes and protocols to digitally sign , digest , authenticate or encrypt any form of digital data.
A typical basic ("class 1") personal certificate verifies the owner's "identity" only insofar as it declares that the sender is the owner of the "From:" email address in the sense that the sender can receive email sent to that address, and so merely proves that an email received really did come from the "From:" address given. It does not verify ...
A mail delivery agent is a program that delivers an email message into a Maildir. The mail delivery agent creates a new file with a unique filename in the tmp directory. [5] [6] [3] At the time of its invention guaranteeing unique filenames efficiently was difficult. The original qmail [1] algorithm for unique names was: read the current Unix time
Transport Neutral Encapsulation Format or TNEF is a proprietary email attachment format used by Microsoft Outlook and Microsoft Exchange Server. An attached file with TNEF encoding is most often named winmail.dat or win.dat , and has a MIME type of Application/MS-TNEF .
Out of a message center, the messages can be sent over a secure SSL-connection or via other equally protecting methods to any recipient. If the recipient is contacted for the first time, a message unlock code (see below MUC) is needed to authenticate the recipient. Alternatively, secure messaging can be used out of any standard email program ...
An enterprise messaging system (EMS) or messaging system in brief [1] is a set of published enterprise-wide standards that allows organizations to send semantically precise messages between computer systems. EMS systems promote loosely coupled architectures that allow changes in the formats of messages to have minimum impact on message subscribers.
An rpmsg file is a file format containing a restricted-permission message. [2] It is used to implement IRM for Outlook messages with the aim of controlling access to content via encryption and access controls, and restricting certain actions such as the ability to forward or copy.