Affiliations: School of Data and Computer Science, Guangdong Peizheng College, Guangzhou, China
Correspondence:
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Corresponding author. Jianhu Gong, School of Data and Computer Science, Guangdong Peizheng College, 510830, Guangzhou, China. E-mail: gscilw@163.com.
Abstract: Aiming at the problem of plaintext recovery attack on 3DES algorithm with different byte keys, a plaintext recovery method for 3DES algorithm with different byte keys is proposed. In order to strengthen the anti-attack ability of DES algorithm, 3DES algorithm is used, which includes double-key 3DES of and triple-double-key 3DES. The 3DES algorithm with different seed key length is used to recover the plaintext. The attack algorithm for the first 256-byte plaintext encrypted by 3DES algorithm are given through the single byte deviation rule and double byte deviation rule. The results show that with the increase of the corresponding quantization order, the processing effect of the method is better than that of the chaos mapping method (4.2 dB), and with the increase of the quantization order, the advantage of the method is constantly improved; the attack result of the method on 256 plaintext is shown as the 114th byte to 127th byte from 3072 bytes, so that in practical application, the plaintext encrypted by 3DES algorithm can be recovered better.
Keywords: Different bytes, key, 3DES algorithm, plaintext, recovery, chaotic
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