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ecdsa implementation

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NIIBE Yutaka
2013-02-20 16:49:56 +09:00
parent 5f1088e4be
commit a368a45a0d
8 changed files with 2724 additions and 2527 deletions
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49
src/openpgp.c
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@@ -833,6 +833,7 @@ cmd_pso (void)
}
#if RSA_AUTH
#define MAX_DIGEST_INFO_LEN 102 /* 40% */
static void
cmd_internal_authenticate (void)
@@ -876,6 +877,54 @@ cmd_internal_authenticate (void)
DEBUG_INFO ("INTERNAL AUTHENTICATE done.\r\n");
}
#else
#define ECDSA_P256_HASH_LEN 32
#define ECDSA_SIGNATURE_LENGTH 64
static void
cmd_internal_authenticate (void)
{
int len = apdu.cmd_apdu_data_len;
int r;
DEBUG_INFO (" - INTERNAL AUTHENTICATE\r\n");
if (P1 (apdu) == 0x00 && P2 (apdu) == 0x00)
{
DEBUG_SHORT (len);
if (!ac_check_status (AC_OTHER_AUTHORIZED))
{
DEBUG_INFO ("security error.");
GPG_SECURITY_FAILURE ();
return;
}
if (len != ECDSA_P256_HASH_LEN)
{
DEBUG_INFO ("wrong hash length.");
GPG_CONDITION_NOT_SATISFIED ();
return;
}
res_APDU_size = ECDSA_SIGNATURE_LENGTH;
r = ecdsa_sign (apdu.cmd_apdu_data, res_APDU,
&kd[GPG_KEY_FOR_AUTHENTICATION]);
if (r < 0)
GPG_ERROR ();
}
else
{
DEBUG_INFO (" - ??");
DEBUG_BYTE (P1 (apdu));
DEBUG_INFO (" - ??");
DEBUG_BYTE (P2 (apdu));
GPG_ERROR ();
}
DEBUG_INFO ("INTERNAL AUTHENTICATE done.\r\n");
}
#endif
#define MBD_OPRATION_WRITE 0
#define MBD_OPRATION_UPDATE 1