OFB¶
OFB is called output feedback mode, and its feedback content is packet-encrypted content instead of ciphertext.
Encryption¶
decryption¶
Advantages and disadvantages¶
Advantages¶
- Does not have error propagation characteristics.
Disadvantages¶
- IV does not require confidentiality, but a different IV must be chosen for each message.
- Does not have self-synchronization capability.
Applicable scene¶
Applicable to some scenarios where the plaintext redundancy is relatively large, such as image encryption and voice encryption.
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