1 and camellia
In cryptography, Camellia is a kind of block cipher highly praised by many organizations, including the NESSIE project of the European Union (as a selection algorithm) and the CRYPTREC project of Japan. This algorithm was invented by Mitsubishi and Japan Telecom in 2000, and it has a similar design idea to the earlier block algorithm. The length of each block of Camellia algorithm is 128 bits, and the key length can be 128, 192 or 256 bits. It has the same security strength and calculation level as AES.
2. Noun explanation
In cryptography, Camellia is a kind of block cipher highly praised by many organizations, including the NESSIE project of the European Union (as a selection algorithm) and the CRYPTREC project of Japan. This algorithm was invented by Mitsubishi and Japan Telecom in 2000, and it has a similar design idea to the earlier block algorithm. Key: The length of each block of Camellia algorithm is 128 bits, and the key length can be 128, 192 or 256 bits. It has an interface that conforms to AES.
3. Operating principle
In terms of calculation, Camellia adopts 18 rounds (128 bits) or 24 rounds (192 or 256 bits) Feistelcipher. There will be a logical transformation every six rounds, that is, the so-called "FL function" or its inverse function. The algorithm also uses input and output keys to whiten. Patent status: Although protected by patent, NTT announced on 200 1 that camellia is a royalty-free license.
4. camellia
Evergreen shrubs or small arbor plants of Camellia of Theaceae. The leaves are thick leathery, oval, slightly pointed at the top, broadly wedge-shaped at the base and finely serrated at the edge; Petals are bowl-shaped; Fruit is spherical. Camellia has no obvious dormancy period throughout the year, and the flowering period is long, from June 10 to May of the following year, and the whole flowering period is June1-March. Camellia is named camellia because its leaves are like tea. Li Shizhen in the Ming Dynasty also said: "Its leaves are named after tea, and they can also be used as tea, so it is named after tea."