How to Calculate RSA (SHA256) hash based on a given public key

[Eric Lendvai]

Anyone has any harbour code to Calculate RSA (SHA256) hash based on a public key?

Thanks, Eric

[tarpauwatratar]

Looks like no one has experience in that field. Because of that let me mention the workaround: You can always use one of the existing implementations in C and do sth like that:

#include "hbapi.h"
#include "hbapiitm.h"

HB_FUNC( FUNCTION_NAME_IN_HARBOUR )
{
    PHB_ITEM pFirstParam = hb_param(1, HB_IT_STRING);
    PHB_CODEPAGE cdp = hb_vmCDP();
    const char* pFirst = hb_itemGetCPtr(pFirstParam);

    //magic in C - You have a public key in the pFirst variable

    hb_retnc(result);
}

I'm not sure of the correctness of the above pattern, but it would be my starting point.

[Gerald Drouillard]

You do know that harbour has:

hb_sha256, and hb_hmac_sha256

--
You received this message because you are subscribed to the Google Groups "Harbour Users" group.
Unsubscribe: harbour-user...@googlegroups.com
Web: https://groups.google.com/group/harbour-users
---
You received this message because you are subscribed to the Google Groups "Harbour Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to harbour-user...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/harbour-users/a97c5403-fe44-4ff0-b884-b5a03fb87810n%40googlegroups.com.

[axtens]

https://crypto.stackexchange.com/questions/18695/does-sha-1024-hash-exist implies that the function probably doesn't exist and would be overkill in the extreme

-Bruce

[juanpere...@gmail.com]

Hello

Minigui has the hbcrypto library which has hash of 256 and 512