Information Security010 marksNumerical: SHA-1 hash computationSHA-1 algorithm and padding
SHA-1 Hash Function Properties and Computation What are properties of hash function? In a hash function SHA-1, how padded message is computed before hash function computation? Using elongated message blocks from w0 to w79 how can you compute the final hash value? For the 160 bit hash value represent
SHA-1 Hash Function Properties and Computation
What are properties of hash function? In a hash function SHA-1, how padded message is computed before hash function computation? Using elongated message blocks from $w_0$ to $w_{79}$ how can you compute the final hash value? For the 160 bit hash value represented by 5 words A, B, C, D, E, write the expressions for $A_{79}$, $B_{79}$, $C_{79}$ after the last pass of the algorithm?[10]
- Hash algorithm: SHA-1 - Output size: 160-bit hash, represented as five 32-bit words $A, B, C, D, E$ - Message schedule words: $w0$ to $w{79}$ (80 words) - Required: properties of hash functions, padding procedure, hash computation, and expressions for $A{79}, B{79}, C{79}$ after the last pass. ...