Category Archives: Computer

Thunderbird email encryption and S / MIME

The device involves the following steps:

  1. Production of a certificate with the public and private keys in the web browser
  2. Export the certificate to a file
  3. Import the certificate into Thunderbird
  4. Configuration of the certificate in Thunderbird

On the Wiki Thunderbird, , the essential technical explanations mail encryption and signing using S / MIME.

Posted in Computer, Encryption, Encryption | Leave a comment

Possible causes for quality problems with laser printers

A poor quality, grazing on expression of laser printers can have several causes:

  1. The toner is (almost) empty.
    Then there are stripes, you are not black like other: bright stripes. This is the most common cause of quality problems.
    Solution: In this case, it often helps, the toner cartridge out of the printer to take and something to shake, distribute the remaining toner evenly over the whole width.
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How does the RSA encryption work?

The question "How does the RSA encryption work?"Can be understood in two ways:

  1. What calculations are needed for the RSA-en- and decryption?
  2. Why do the corresponding formulas work?

Below I will for the RSA-en- and decryption explain the necessary calculations and then briefly outline, why these formulas work.

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IPv6 Course part 3: The target- and Source IP Selection (prefix policy)

In IPv6, it is provided in the standard, that a computer, even closer 1 NIC, has multiple IPs. This may be due:

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How to configure Thunderbird to digitally sign and encrypt emails using S / MIME?

The device involves the following steps:

  1. Production of a certificate with the public and private keys in the web browser
  2. Export the certificate to a file
  3. Import the certificate into Thunderbird
  4. Configuration of the certificate in Thunderbird

On the Wiki Thunderbird, , the essential technical explanations mail encryption and signing using S / MIME.

Posted in See all German articles, Computer, Encryption | Tagged , , , , , , , | 1 How