static char *hmacpw(const char *pw, const char *hash)
{
int i;
for (i=0; hmac_list[i] &&
strcmp(hmac_list[i]->hh_name, hash); i++)
;
if (hmac_list[i])
{
struct hmac_hashinfo *hmac=hmac_list[i];
unsigned char *p=malloc(hmac->hh_L*2);
char *q=malloc(hmac->hh_L*4+1);
unsigned i;
if (!p || !q)
{
perror("malloc");
exit(1);
}
hmac_hashkey(hmac, pw, strlen(pw), p, p+hmac->hh_L);
for (i=0; i<hmac->hh_L*2; i++)
sprintf(q+i*2, "%02x", (int)p[i]);
free(p);
return (q);
}
return (NULL);
}
static char *mktoken(const char *hash, const char *t, time_t now)
{
char now_s[NUMBUFSIZE];
char *p;
unsigned char *q;
int i;
char *r;
libmail_strh_time_t(now, now_s);
p=malloc(strlen(hash)+strlen(now_s)+3+hmac_sha1.hh_L*2);
if (!p)
return (NULL);
strcat(strcpy(p, hash), now_s);
q=malloc(hmac_sha1.hh_L*3);
if (!q)
{
free(p);
return (NULL);
}
hmac_hashkey(&hmac_sha1, t, sizeof(cur_token),
q, q + hmac_sha1.hh_L);
hmac_hashtext(&hmac_sha1, p, strlen(p),
q, q + hmac_sha1.hh_L, q + hmac_sha1.hh_L*2);
strcpy(p, now_s);
r=p + strlen(p);
*r++='-';
for (i=0; i<hmac_sha1.hh_L; i++)
{
int c=(unsigned char)q[hmac_sha1.hh_L*2+i];
*r++ = xdigit[c / 16];
*r++ = xdigit[c % 16];
}
*r=0;
free(q);
return (p);
}
std::string mail::imaphmac::operator()(std::string password, std::string challenge) const
{
std::string i, o, b;
i.insert(i.end(), hmac.hh_L, (char)0);
o.insert(o.end(), hmac.hh_L, (char)0);
b.insert(b.end(), hmac.hh_L, (char)0);
hmac_hashkey( &hmac, &*password.begin(), password.size(),
(unsigned char *)&*o.begin(),
(unsigned char *)&*i.begin());
hmac_hashtext( &hmac, &*challenge.begin(), challenge.size(),
(unsigned char *)&*o.begin(),
(unsigned char *)&*i.begin(),
(unsigned char *)&*b.begin());
return (b);
}
int main()
{
unsigned i, j;
for (i=0; i<sizeof(testcases)/sizeof(testcases[0]); i++)
{
SHA1_DIGEST ok, ik, hash;
hmac_hashkey(&hmac_sha1, testcases[i].key,
strlen(testcases[i].key), ok, ik);
hmac_hashtext(&hmac_sha1, testcases[i].data,
strlen(testcases[i].data), ok, ik, hash);
printf("test_cases[%i].digest=0x", i+1);
for (j=0; j<SHA1_DIGEST_SIZE; j++)
printf("%02x", hash[j]);
printf("\n");
}
return (0);
}