Glossary

ECB

Electronic codebook

A block cipher mode that encrypts each block independently with the same key, so identical plaintext blocks give identical ciphertext blocks and patterns in the data show through. Do not use it to encrypt data; use an AEAD.

Defined in: NIST SP 800-38A, Block Cipher Modes of Operation

Covered in

Reference

ECB mode: why it leaks patterns and what to use instead

Derive exactly what ECB reveals and why a longer key cannot fix it, find where ECB enters real code, and replace it with an authenticated mode.