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dpp-util: add DPP attribute iteration APIs

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This commit is contained in:
James Prestwood 2021-12-06 13:03:55 -08:00 committed by Denis Kenzior
parent c511e4be2a
commit 669a92607c
2 changed files with 83 additions and 0 deletions
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34
src/dpp-util.c
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@ -95,6 +95,40 @@ char *dpp_generate_uri(const uint8_t *asn1, size_t asn1_len, uint8_t version,
return l_string_unwrap(uri);
}
void dpp_attr_iter_init(struct dpp_attr_iter *iter, const uint8_t *pdu,
size_t len)
{
iter->pos = pdu;
iter->end = pdu + len;
}
bool dpp_attr_iter_next(struct dpp_attr_iter *iter,
enum dpp_attribute_type *type_out, size_t *len_out,
const uint8_t **data_out)
{
enum dpp_attribute_type type;
size_t len;
if (iter->pos + 4 > iter->end)
return false;
type = l_get_le16(iter->pos);
len = l_get_le16(iter->pos + 2);
iter->pos += 4;
if (iter->pos + len > iter->end)
return false;
*type_out = type;
*len_out = len;
*data_out = iter->pos;
iter->pos += len;
return true;
}
/*
* EasyConnect 2.0 Table 3. Key and Nonce Length Dependency on Prime Length
*/

49
src/dpp-util.h
View File

@ -22,6 +22,55 @@
struct l_ecc_point;
struct l_ecc_scalar;
enum dpp_attribute_type {
/* 0000 - 0FFF reserved */
DPP_ATTR_STATUS = 0x1000,
DPP_ATTR_INITIATOR_BOOT_KEY_HASH = 0x1001,
DPP_ATTR_RESPONDER_BOOT_KEY_HASH = 0x1002,
DPP_ATTR_INITIATOR_PROTOCOL_KEY = 0x1003,
DPP_ATTR_WRAPPED_DATA = 0x1004,
DPP_ATTR_INITIATOR_NONCE = 0x1005,
DPP_ATTR_INITIATOR_CAPABILITIES = 0x1006,
DPP_ATTR_RESPONDER_NONCE = 0x1007,
DPP_ATTR_RESPONDER_CAPABILITIES = 0x1008,
DPP_ATTR_RESPONDER_PROTOCOL_KEY = 0x1009,
DPP_ATTR_INITIATOR_AUTH_TAG = 0x100a,
DPP_ATTR_RESPONDER_AUTH_TAG = 0x100b,
DPP_ATTR_CONFIGURATION_OBJECT = 0x100c,
DPP_ATTR_CONNECTOR = 0x100d,
DPP_ATTR_CONFIGURATION_REQUEST = 0x100e,
DPP_ATTR_BOOTSTRAPPING_KEY = 0x100f,
/* 1010 - 1011 reserved */
DPP_ATTR_FINITE_CYCLIC_GROUP = 0x1012,
DPP_ATTR_ENCRYPTED_KEY = 0x1013,
DPP_ATTR_ENROLLEE_NONCE = 0x1014,
DPP_ATTR_CODE_IDENTIFIER = 0x1015,
DPP_ATTR_TRANSACTION_ID = 0x1016,
DPP_ATTR_BOOTSTRAPPING_INFO = 0x1017,
DPP_ATTR_CHANNEL = 0x1018,
DPP_ATTR_PROTOCOL_VERSION = 0x1019,
DPP_ATTR_ENVELOPED_DATA = 0x101a,
DPP_ATTR_SEND_CONN_STATUS = 0x101b,
DPP_ATTR_CONN_STATUS = 0x101c,
DPP_ATTR_RECONFIGURATION_FLAGS = 0x101d,
DPP_ATTR_C_SIGN_KEY_HASH = 0x101e,
DPP_ATTR_CSR_ATTRIBUTES_REQUEST = 0x101f,
DPP_ATTR_ANONCE = 0x1020,
DPP_ATTR_EID = 0x1021,
DPP_ATTR_CONFIGURATOR_NONCE = 0x1022,
};
struct dpp_attr_iter {
const uint8_t *pos;
const uint8_t *end;
};
void dpp_attr_iter_init(struct dpp_attr_iter *iter, const uint8_t *pdu,
size_t len);
bool dpp_attr_iter_next(struct dpp_attr_iter *iter,
enum dpp_attribute_type *type, size_t *len,
const uint8_t **data);
char *dpp_generate_uri(const uint8_t *asn1, size_t asn1_len, uint8_t version,
const uint8_t *mac, const uint32_t *freqs,
size_t freqs_len, const char *info, const char *host);