static int which = 0;
-int select_crypto_if(int ifno)
+int select_crypto_if(const int ifno)
{
if (ifno < 0 || ifno > MAX_IF) return -1;
which = ifno;
return 0;
}
-const char *if_name(int ifno)
+const char *crypto_init(const int ifno)
{
- if (ifno < 0 || ifno > MAX_IF) return "invalid index";
- return ifs[ifno]->name;
+ if (ifno < 0 || ifno > MAX_IF) return (const char *)0;
+ return ifs[ifno]->init();
}
-static unsigned char iv[16] = {0};
+#define INITIV {0}
-unsigned long encrypt(void *key, int keylen, void *pt, void *ct, int tlen)
+unsigned long encrypt(const void *key, const int keylen, const void *pt, void *ct, const int tlen)
{
+ unsigned char iv[16] = INITIV;
+
assert(keylen == 16);
return ifs[which]->encrypt(key, keylen, iv, pt, ct, tlen);
}
-unsigned long decrypt(void *key, int keylen, void *ct, void *pt, int tlen)
+unsigned long decrypt(const void *key, const int keylen, const void *ct, void *pt, const int tlen)
{
+ unsigned char iv[16] = INITIV;
+
assert(keylen == 16);
return ifs[which]->decrypt(key, keylen, iv, ct, pt, tlen);
}
-unsigned long hash(void *pt, int tlen, void *tag, int *taglen)
+unsigned long hash(const void *pt, const int tlen, void *tag, int *taglen)
{
assert(*taglen == 20);
return ifs[which]->hash(pt, tlen, tag, taglen);
}
-unsigned long hmac(void *key, int keylen, void *pt, int tlen, void *tag, int *taglen)
+unsigned long hmac(const void *key, const int keylen, const void *pt, const int tlen, void *tag, int *taglen)
{
assert(*taglen == 20);
return ifs[which]->hmac(key, keylen, pt, tlen, tag, taglen);
}
-const char *crypto_errstr(unsigned long err)
+const char *crypto_errstr(const unsigned long err)
{
return ifs[which]->errstr(err);
}