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--- racfor_wiki:block_cipher_modes [2021/01/17 16:05]
jli [Electronic Codebook (ECB)]
+++ racfor_wiki:block_cipher_modes [2024/12/05 12:24] (trenutno)
@@ Redak 21: / Redak 21: @@
 In ECB encryption and ECB decryption, multiple forward cipher functions and inverse cipher functions can be computed in parallel under a given key.
-The ECB mode has an disadvantages—a lack of diffusion, under a given key, any given plaintext block always gets encrypted to the same cyphertext if they are identical.
+The ECB mode has an disadvantage—a lack of diffusion, under a given key, any given plaintext block always gets encrypted to the same ciphertext if they are identical.
 ===== Cipher Block Chaining (CBC) =====
-The cipher block chaining (CBC) mode of operation is introduced in 1976 [3]. The CBC mode features the combining of the plaintext blocks with the previous ciphertext blocks. The combination method is XOR. To make each message unique, an initialization vector are introduced in the first block. This initialization vector need not be secret, but must be unpredictable.
+The cipher block chaining (CBC) mode of operation was introduced in 1976 [3]. The CBC mode features the combining of the plaintext blocks with the previous ciphertext blocks. The combination method is XOR. To make each message unique, an initialization vector are introduced in the first block. This initialization vector need not be secret, but must be unpredictable.
 {{ :en:racfor_wiki:cbc_model.png?400 |}}
-The main drawback of the CBC mode is sequential. In CBC encryption, the input block to each forward cipher operation (except the first) depends on the result of the previous forward cipher operation, so process cannot be parallelized. And only a one-bit change in a plaintext or initialization vector affects all following ciphertext blocks.
+The main drawback of the CBC mode is sequential. In CBC encryption, the input block to each forward cipher operation (except the first) depends on the result of the previous forward cipher operation, so the process cannot be parallelized. And only a one-bit change in a plaintext or initialization vector affects all following ciphertext blocks.
 ===== Cipher Feedback (CFB) =====

racfor_wiki/block_cipher_modes.1610899524.txt.gz · Zadnja izmjena: 2024/12/05 12:23 (vanjsko uređivanje)