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This week’s whipsaw market movements test NFT traders’ resolve — What’s next?

NFT prices take a hit alongside the sharp correction in the crypto market and only time will tell whether the current downturn was a buying opportunity.

Reversible Decryption in Symmetric Key Algorithms

I am currently learning the Internal Working of Symmetric Key Algorithms, like DES, AES, BlowFish, IDEA just to name a few. These are all quite complex Encryption alogrithms, which requires a lot of confusion and diffusion of the Plain Text to produce the corresponding Cipher Text. But one thing that most of these (if not::Listen

I am currently learning the Internal Working of Symmetric Key Algorithms, like DES, AES, BlowFish, IDEA just to name a few.

These are all quite complex Encryption alogrithms, which requires a lot of confusion and diffusion of the Plain Text to produce the
corresponding Cipher Text.

But one thing that most of these (if not all) have in common is the fact that their decryption algorithms are sort of reverse of
the encryption algorithm used to encrypt them.

For Ex:-

DES decryption requires the Key Portions to be revealed in reverse order (Ex. if K1, K2, K3….K16 were used for encryption, then
for decryption the same encryption algorithm must be feeded keys in order K16, K15, K14…K1)

IDEA decryption requires some ulteration in Key Generation, and the pattern of subkeys. And the decryption subkeys are
actually the inverse of the encryption subkeys.

BlowFish decryption process requires the reversal of P-array values

AES decryption requries the reverse of encryption process (inv Sbox, inv CMatrix etc)

The question is, why are the encryption and decryption so much similar.

1) Are these algorithm’s made while keeping their decryption process (Easy Reversibility without any extra algorithm/hardware) in mind?

2) Or is this a property that Symmetric Key Algorithms exhibit in general?

This week’s whipsaw market movements test NFT traders’ resolve — What’s next?

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