What does decryption accomplish?

Decryption is a process that specifically refers to converting ciphertext back into its original readable format, known as plaintext. Ciphertext is the scrambled output that results from applying an encryption algorithm to plaintext, making the data unreadable without the correct decryption key. The primary purpose of decryption is to recover the original data so that it can be understood and used by authorized individuals.

In this context, transforming ciphertext into plaintext is a fundamental operation in the realm of cryptography, essential for data confidentiality, as it allows secure information exchange. Once the ciphertext is decrypted, the original message can be accessed and utilized, ensuring the information can be restored for its intended application. This highlights the importance of secure key management, as only those with the correct decryption key can revert ciphertext to plaintext.