/* Map STRING to the cipher algorithm identifier. Returns the
algorithm ID of the cipher for the given name or 0 if the name is
not known. It is valid to pass NULL for STRING which results in a
return value of 0. */
int
gcry_cipher_map_name (const char *string)
{
gcry_module_t cipher;
int ret, algorithm = 0;
if (! string)
return 0;
REGISTER_DEFAULT_CIPHERS;
/* If the string starts with a digit (optionally prefixed with
either "OID." or "oid."), we first look into our table of ASN.1
object identifiers to figure out the algorithm */
ath_mutex_lock (&ciphers_registered_lock);
ret = search_oid (string, &algorithm, NULL);
if (! ret)
{
cipher = gcry_cipher_lookup_name (string);
if (cipher)
{
algorithm = cipher->mod_id;
_gcry_module_release (cipher);
}
}
ath_mutex_unlock (&ciphers_registered_lock);
return algorithm;
}
/* Given a STRING with an OID in dotted decimal notation, this
function returns the cipher mode (GCRY_CIPHER_MODE_*) associated
with that OID or 0 if no mode is known. Passing NULL for string
yields a return value of 0. */
int
_gcry_cipher_mode_from_oid (const char *string)
{
gcry_cipher_spec_t *spec;
gcry_cipher_oid_spec_t oid_spec;
if (!string)
return 0;
spec = search_oid (string, &oid_spec);
if (spec)
return oid_spec.mode;
return 0;
}
/* Given a STRING with an OID in dotted decimal notation, this
function returns the cipher mode (GCRY_CIPHER_MODE_*) associated
with that OID or 0 if no mode is known. Passing NULL for string
yields a return value of 0. */
int
gcry_cipher_mode_from_oid (const char *string)
{
gcry_cipher_oid_spec_t oid_spec;
int ret = 0, mode = 0;
if (!string)
return 0;
ath_mutex_lock (&ciphers_registered_lock);
ret = search_oid (string, NULL, &oid_spec);
if (ret)
mode = oid_spec.mode;
ath_mutex_unlock (&ciphers_registered_lock);
return mode;
}
/* Map STRING to the cipher algorithm identifier. Returns the
algorithm ID of the cipher for the given name or 0 if the name is
not known. It is valid to pass NULL for STRING which results in a
return value of 0. */
int
_gcry_cipher_map_name (const char *string)
{
gcry_cipher_spec_t *spec;
if (!string)
return 0;
/* If the string starts with a digit (optionally prefixed with
either "OID." or "oid."), we first look into our table of ASN.1
object identifiers to figure out the algorithm */
spec = search_oid (string, NULL);
if (spec)
return spec->algo;
spec = spec_from_name (string);
if (spec)
return spec->algo;
return 0;
}
