SHA256

A hashing algorithm commonly used for creating file signatures.

• Weak to Length Extension Attack

Checksum

sha256sum file0

Algorithm

Where:

• $Ch(E,F,G)=(E\wedge F)\oplus (\neg E\wedge G)$
• $Ma(A,B,C)=(A\wedge B)\oplus (A\wedge C)\oplus (B\wedge C)$
• ${\Sigma }_0(A)=(A⋙2)\oplus (A⋙13)\oplus (A⋙22)$
• ${\Sigma }_1(E)=(E⋙6)\oplus (E⋙11)\oplus (E⋙25)$
• $⋙$ is the Bitwise Right Rotate
• $⊞$ is addition module $2^{32}$