Lecture Note
University
California State University, Los AngelesCourse
CS4780 | Cryptography and Information SecurityPages
2
Academic year
2023
Julie Elizabeth John
Views
0
SHA - SHA-P compression function Additive constant - KE Kt = SA827999 octs19 230xv2 20st 589 Kb= GED9EBAI 230x53 40
Truth Table: B C D to -19 f20 - 39 f40-59 fco. 0 0 O 0 0 K S Circular left shift the 32 bit argument by K bits rotation) Wt - word derived from 5 12 bit block W6: was t steps 4. 800 -"WE-14 was W76 we 512 bits wt. 3 XOR sta bits XOR * as x S w79 Wgg = wt-16 = W79-16 W63 W65 = wt - 14 = W65-14 > W51
SHA-1 Compression Function
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