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Frequently Asked Questions

How secure is the DES algorithm?

The algorithm is believed to be practically secure in the form of Triple DES, although there are theoretical attacks. This cipher has been superseded by the Advanced Encryption Standard (AES). Furthermore, DES has been withdrawn as a standard by the National Institute of Standards and Technology .

Why is Triple DES encryption insecure?

This can be considered insecure, and, as consequence Triple DES has been deprecated by NIST in 2017. The short block size of 64 bits makes 3DES vulnerable to block collision attacks if it is used to encrypt large amounts of data with the same key. The Sweet32 attack shows how this can be exploited in TLS and OpenVPN.

Why is 3DES so vulnerable to attack?

The short block size of 64 bits makes 3DES vulnerable to block collision attacks if it is used to encrypt large amounts of data with the same key. The Sweet32 attack shows how this can be exploited in TLS and OpenVPN.

What happened to Des and 3DES?

This CVE, combined with the inadequate key size of DES and 3DES, NIST has deprecated DES and 3DES for new applications in 2017, and for all application by 2023. It has been replaced with the more secure, more robust AES .


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