10 Questions
What is the key length of the Data Encryption Standard (DES)?
56 bits
When was the Data Encryption Standard (DES) developed and by whom?
Developed in the early 1970s at IBM
Who was the earlier design of the Data Encryption Standard (DES) algorithm by?
Horst Feistel
When was the slightly modified version of Data Encryption Standard (DES) published as an official Federal Information Processing Standard (FIPS) for the United States?
1977
What did the publication of an NSA-approved encryption standard lead to?
Quick international adoption and widespread academic scrutiny
Who developed the Data Encryption Standard (DES) in the early 1970s?
International Business Machines Corporation (IBM)
What was the key length of the original Data Encryption Standard (DES)?
56 bits
In which year was the slightly modified version of Data Encryption Standard (DES) published as an official Federal Information Processing Standard (FIPS) for the United States?
1977
What was the modification in the slightly modified version of Data Encryption Standard (DES) selected by the NBS in 1977?
Strengthened against differential cryptanalysis
What was the impact of the publication of an NSA-approved encryption standard?
Quick international adoption and widespread academic scrutiny
Study Notes
Data Encryption Standard (DES)
- The key length of the Data Encryption Standard (DES) is 56 bits.
- The Data Encryption Standard (DES) was developed in the early 1970s by IBM, with the contribution of the National Security Agency (NSA).
- The earlier design of the DES algorithm was by Horst Feistel.
- A slightly modified version of DES was published as an official Federal Information Processing Standard (FIPS) for the United States in 1977.
- The publication of an NSA-approved encryption standard led to the widespread acceptance of DES as a secure encryption method.
- The original key length of DES was 56 bits.
- The modification in the slightly modified version of DES selected by the NBS in 1977 was the reduction of the key length from 128 bits to 56 bits.
- The impact of the publication of an NSA-approved encryption standard was the widespread adoption of DES as a secure encryption method, which marked a significant milestone in the development of encryption standards.
Test your knowledge of the Data Encryption Standard (DES) with this quiz! Explore the history, development, and impact of this influential symmetric-key algorithm, and see how much you know about its key length, encryption process, and overall significance in the field of cryptography.
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