int
px_find_cipher(const char *name, PX_Cipher ** res)
{
char nbuf[PX_MAX_NAMELEN + 1];
const char *mode = NULL;
char *p;
MCRYPT ctx;
PX_Cipher *c;
strcpy(nbuf, name);
if ((p = strrchr(nbuf, '-')) != NULL)
{
if (is_mode(p + 1))
{
mode = p + 1;
*p = 0;
}
}
name = px_resolve_alias(aliases, nbuf);
if (!mode)
{
mode = "cbc";
/*
* if (mcrypt_module_is_block_algorithm(name, NULL)) mode = "cbc";
* else mode = "stream";
*/
}
mode = px_resolve_alias(mode_aliases, mode);
ctx = mcrypt_module_open((char *) name, NULL, (char *) mode, NULL);
if (ctx == (void *) MCRYPT_FAILED)
return -1;
c = palloc(sizeof *c);
c->iv_size = cipher_iv_size;
c->key_size = cipher_key_size;
c->block_size = cipher_block_size;
c->init = cipher_init;
c->encrypt = cipher_encrypt;
c->decrypt = cipher_decrypt;
c->free = cipher_free;
c->ptr = ctx;
c->pstat = 0;
*res = c;
return 0;
}
int
px_find_cipher(const char *name, PX_Cipher **res)
{
const struct ossl_cipher_lookup *i;
PX_Cipher *c = NULL;
ossldata *od;
name = px_resolve_alias(ossl_aliases, name);
for (i = ossl_cipher_types; i->name; i++)
if (!strcmp(i->name, name))
break;
if (i->name == NULL)
return PXE_NO_CIPHER;
od = px_alloc(sizeof(*od));
memset(od, 0, sizeof(*od));
od->ciph = i->ciph;
c = px_alloc(sizeof(*c));
c->block_size = gen_ossl_block_size;
c->key_size = gen_ossl_key_size;
c->iv_size = gen_ossl_iv_size;
c->free = gen_ossl_free;
c->init = od->ciph->init;
c->encrypt = od->ciph->encrypt;
c->decrypt = od->ciph->decrypt;
c->ptr = od;
*res = c;
return 0;
}
int
px_find_cipher(const char *name, PX_Cipher **res)
{
int i;
PX_Cipher *c = NULL;
name = px_resolve_alias(int_aliases, name);
for (i = 0; int_ciphers[i].name; i++)
if (!strcmp(int_ciphers[i].name, name))
{
c = int_ciphers[i].load();
break;
}
if (c == NULL)
return PXE_NO_CIPHER;
*res = c;
return 0;
}
