![cryptography - Why do we only take the 1st and last bits together for SBox substitution? - Stack Overflow cryptography - Why do we only take the 1st and last bits together for SBox substitution? - Stack Overflow](https://i.stack.imgur.com/Ta2yx.png)
cryptography - Why do we only take the 1st and last bits together for SBox substitution? - Stack Overflow
![What is Data Encryption Standard (DES)? Definition, Working, Advantages and Disadvantages - Binary Terms What is Data Encryption Standard (DES)? Definition, Working, Advantages and Disadvantages - Binary Terms](https://binaryterms.com/wp-content/uploads/2020/04/s-box.jpg)
What is Data Encryption Standard (DES)? Definition, Working, Advantages and Disadvantages - Binary Terms
![cr.crypto security - How can DES have 6x4 S-Boxes and still be reversible? - Theoretical Computer Science Stack Exchange cr.crypto security - How can DES have 6x4 S-Boxes and still be reversible? - Theoretical Computer Science Stack Exchange](https://i.stack.imgur.com/jnXQM.png)
cr.crypto security - How can DES have 6x4 S-Boxes and still be reversible? - Theoretical Computer Science Stack Exchange
![Function S-box S1 (in the DES algorithm) represented as a table and its... | Download Scientific Diagram Function S-box S1 (in the DES algorithm) represented as a table and its... | Download Scientific Diagram](https://www.researchgate.net/profile/Miroslaw-Szaban/publication/220440933/figure/fig6/AS:668741075468315@1536451705730/Scheme-presenting-an-application-of-S-boxes-in-the-DES-algorithm-on-the-basis-of-FIPS_Q320.jpg)
Function S-box S1 (in the DES algorithm) represented as a table and its... | Download Scientific Diagram
![S-Box Design - Symmetric Ciphers and Hashes - Modern Cryptography: Applied Mathematics for Encryption and Informanion Security (2016) S-Box Design - Symmetric Ciphers and Hashes - Modern Cryptography: Applied Mathematics for Encryption and Informanion Security (2016)](https://apprize.best/security/cryptography/cryptography.files/image185.jpg)
S-Box Design - Symmetric Ciphers and Hashes - Modern Cryptography: Applied Mathematics for Encryption and Informanion Security (2016)
![Inverse S-box: substitution values for the byte xy (in hexadecimal format). | Download Scientific Diagram Inverse S-box: substitution values for the byte xy (in hexadecimal format). | Download Scientific Diagram](https://www.researchgate.net/publication/220091765/figure/fig5/AS:668917752139790@1536493828948/Inverse-S-box-substitution-values-for-the-byte-xy-in-hexadecimal-format.png)