+/*
+Copyright (c) 2013 Eugene Crosser
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product documentation
+ would be appreciated but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 3. This notice may not be removed or altered from any source
+ distribution.
+*/
+
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "authobj.h"
#include "crypto.h"
+#include "pcsc_cr.h"
+
+unsigned char secret[] = {
+ 0xb4, 0x62, 0xf2, 0x60, 0x87, 0x78, 0x16, 0x87, 0xde, 0xce,
+ 0x80, 0x09, 0x24, 0x0b, 0x93, 0xfc, 0xa0, 0xfc, 0x56, 0x56
+};
+
+static struct _auth_chunk
+conjure_key(const unsigned char *challenge, const int challengesize)
+{
+ struct _auth_chunk ho = {0};
+ long rc;
+ int keysize = sizeof(ho.data);
+
+ if ((rc = hmac(secret, sizeof(secret), challenge, challengesize,
+ &ho.data, &keysize))) {
+ ho.err = crypto_errstr(rc);
+ } else if (keysize != sizeof(ho.data)) {
+ ho.err = "make_key: hash size is wrong";
+ }
+ return ho;
+}
+
+static struct _auth_chunk
+token_key(const unsigned char *challenge, const int challengesize)
+{
+ struct _auth_chunk ho = {0};
+ long rc;
+ int keysize = sizeof(ho.data);
+
+ if ((rc = pcsc_cr(challenge, challengesize, ho.data, &keysize))) {
+ ho.err = pcsc_errstr(rc);
+ }
+ return ho;
+}
int main(int argc, char *argv[])
{
const char *id = "testuser";
const char *pass = "testpassword";
const char *nonce = "1";
- const unsigned char secret[] = {0xb4, 0x62, 0xf2, 0x60, 0x87,
- 0x78, 0x16, 0x87, 0xde, 0xce,
- 0x80, 0x09, 0x24, 0x0b, 0x93,
- 0xfc, 0xa0, 0xfc, 0x56, 0x56};
const unsigned char *payload = (unsigned char *)
"To authorize or not to authorize?";
int i;
struct _auth_obj ao;
struct _auth_obj nao;
+ struct _auth_chunk (*fetch_key)(const unsigned char *challenge,
+ const int challengesize);
+
+ if (argc == 2 && strlen(argv[1]) == 40 &&
+ strspn(argv[1], "0123456789abcdefABCDEF") == 40) {
+ for (i = 0; i < sizeof(secret); i++)
+ sscanf(&argv[1][i*2], "%2hhx", &secret[i]);
+ fetch_key = token_key;
+ } else {
+ fetch_key = conjure_key;
+ }
- printf("using crypto %s\n", crypto_init(0));
- ao = new_authobj(id, pass, nonce, secret, sizeof(secret),
- payload, strlen((char *)payload));
+ ao = authobj(id, pass, NULL, nonce, secret, sizeof(secret),
+ payload, strlen((char *)payload),
+ NULL, 0, NULL);
printf("new_authobj err=%s\n", ao.err?ao.err:"<no error>");
printf("data(%d):", ao.datasize);
for (i = 0; i < ao.datasize; i++) printf(" %02x", ao.data[i]);
return 1;
}
- nao = verify_authobj(id, pass, nonce, nonce, ao.data, ao.datasize);
+ nao = authobj(id, pass, nonce, nonce, NULL, 0, NULL, 0,
+ ao.data, ao.datasize, fetch_key);
printf("verify_authobj err=%s\n", nao.err?nao.err:"<no error>");
printf("data(%d):", nao.datasize);
for (i = 0; i < nao.datasize; i++) printf(" %02x", nao.data[i]);