SHA256

openssl SHA256

#include <string.h>

#include <glib.h>

#include <openssl/sha.h>

void main()

{

        gint i;

        guint8 src[] = "abc";

        guint8 dest[SHA256_DIGEST_LENGTH];

        guint8 expected_sha256_of_abc[32] = {

                0xBA, 0x78, 0x16, 0xBF, 0x8F, 0x01, 0xCF, 0xEA,

                0x41, 0x41, 0x40, 0xDE, 0x5D, 0xAE, 0x22, 0x23,

                0xB0, 0x03, 0x61, 0xA3, 0x96, 0x17, 0x7A, 0x9C,

                0xB4, 0x10, 0xFF, 0x61, 0xF2, 0x00, 0x15, 0xAD

        };

            /* https://www.openssl.org/docs/man1.0.2/crypto/sha.html */

        SHA256 (src, strlen(src), dest);

        g_print ("SHA256: ");

        for (i = 0; i < SHA256_DIGEST_LENGTH; i++) {

                g_print ("%.2X ", dest[i]);

        }

        g_print ("\n");

        g_assert_cmpmem (dest, 32, expected_sha256_of_abc, 32);

}

SHA256 sample 값 : https://www.di-mgt.com.au/sha_testvectors.html