Re: SHA_CTX h0, h1, h2, h3, h4

Jakob Bohm via openssl-users <openssl-users@xxxxxxxxxxx> · Wed, 30 Oct 2019 19:45:28 +0100

On 30/10/2019 04:04, ratheesh kannoth wrote:
Hi,

1. what are these h0....h4 ?

2. How are they generated ?

3. Could you help to locate code in openssl ?

typedef struct SHAstate_st {
     SHA_LONG h0, h1, h2, h3, h4;
     SHA_LONG Nl, Nh;
     SHA_LONG data[SHA_LBLOCK];
     unsigned int num;
} SHA_CTX;

Thanks,,

Read the specification of the SHA-1 algorithm (either in the FIPS 180-1
standard or in a textbook).

Enjoy

Jakob
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