# MATHSHA1Context

## C Specification

      #include <nitro/math/dgt.h>

      typedef struct MATHSHA1Context MATHSHA1Context;

## Elements

Do not access the elements of this structure directly.

## Description

This is the context structure used in calculating SHA-1. It has a size of 104 bytes. Initialize the structure with `MATH_SHA1Init`, use `MATH_SHA1Update` to assign input data, and `MATH_SHA1GetHash` to get the message digest value. SHA-1 is an algorithm to find the message digest value. For details, see RFC (Request For Comments) 3174, which is published by IETF (The Internet Engineering Task Force).

## See Also

`MATH_SHA1Init`, `MATH_SHA1Update`, `MATH_SHA1GetHash`

## Revision History

04/12/2005 Added description of size.
04/01/2005 Initial version.