w_sigma_0 Entity Reference

\(\sigma_0\) function block More...

Inheritance diagram for w_sigma_0:

Entities
RTL	architecture
	Architecture of the \(\sigma_0\) function block. More...

Libraries
ieee
	Standard library.

Use Clauses
std_logic_1164
	Standard 9-values logic library.

Generics
WORD_WIDTH	natural := 32
	Width of the words of the Expander.

Ports
x	in std_logic_vector ( WORD_WIDTH - 1 downto 0 )
	Input word.
o	out std_logic_vector ( WORD_WIDTH - 1 downto 0 )
	Output word.

Detailed Description

\(\sigma_0\) function block

This component computes the function

\[ \sigma_0\left(x\right) = x \ggg_r 7 \oplus x \ggg_r 18 \oplus x \ggg 3 \]

for SHA-256 and

\[ \sigma_0\left(x\right) = x \ggg_r 1 \oplus x \ggg_r 8 \oplus x \ggg 7 \]

for SHA-512.

Member Data Documentation

ieee

ieee

Library

Standard library.

o

o out std_logic_vector ( WORD_WIDTH - 1 downto 0 )

Port

Output word.

std_logic_1164

std_logic_1164

Package

Standard 9-values logic library.

WORD_WIDTH

WORD_WIDTH natural := 32

Generic

Width of the words of the Expander.

x

x in std_logic_vector ( WORD_WIDTH - 1 downto 0 )

Port

Input word.