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A CRYPTOGRAPHIC STUDY ON S—BOXES OF DES TYPE Ⅰ AN INTEGRATED ANALYSIS OF THE DESIGN CRITERIA FOR S-BOXES
DES S-box
2007/8/7
An integrated analysis of the design criteria for the S-boxes used in the DES is made. Among others, the exclusion principle between the degree of nonlinearity and the degree of I/O—correlation immuni...
A CRYPTOGRAPHIC STUDY ON S—BOXES OF DES TYPE Ⅱ AN ENTROPY LEAKAGE ANALYSIS FOR THE KEY
DES S-box entropy
2007/8/7
The concept of key-entropy drop in an S-box is introduced. It is established that the output functions of the permutations composing an S-box belong to three patterns of key-entropy drop. An analysis ...