A p7a file extension is associated with the PKCS #7 signature data.

Detailed description

Software that works with p7a file extension

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P7A file - PKCS #7 signature

What is p7a file? How to open p7a files?

File type specification:

Encoded and encrypted file type icon Encoded and encrypted file type

The p7a file extension is related to the PKCS #7 signature data.

S/MIME (Secure/Multipurpose Internet Mail Extensions) provides a consistent way to send and receive secure MIME data.

Based on the popular Internet MIME standard, S/MIME provides the following cryptographic security services for electronic messaging    applications: authentication, message integrity and non-repudiation of origin (using digital signatures) and privacy and data security (using encryption).

Mime types:

The default software associated to p7a file type:

OpenSSL  Multiplatform software

OpenSSL is toolkit used for implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .p7a file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of recommended software applications associated to the .p7a file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open p7a file, edit p7a file, convert p7a file, view p7a file, play p7a file etc. (if exist software for corresponding action in File-Extensions.org's database).

  • Others p7a file

Unspecified and all other actions for computer programs working with p7a file - PKCS #7 signature

Click on the software link for more information about OpenSSL. OpenSSL uses p7a file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).


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