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A Bluffer’s Guide To AES Modes … ECB, CBC, CFB, and all that jazz!

Well, in its core form AES is a block cipher, but increasingly it is converted into a stream cipher in order to speed things up. For AES, the main things you need to know are:

• The block size. The block size is typically either 128 bits (16 bytes) or one bit. With a 16-byte block size, we have a block cipher, and for a one-bit block size we have a…