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Adding preliminary support for get next assertion.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-09-21 20:02:19 +02:00
parent cf206bf158
commit 5625e0dacd
1 changed files with 21 additions and 3 deletions
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24
src/fido/cbor_get_assertion.c
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@@ -39,6 +39,24 @@ CredOptions optionsx = {0};
uint8_t flagsx = 0;
uint8_t credentialCounter = 1;
uint8_t numberOfCredentialsx = 0;
uint32_t timerx = 0;
int cbor_get_next_assertion(const uint8_t *data, size_t len) {
CborError error = CborNoError;
if (clientDataHashx.present == false || rpIdx.present == false || pinUvAuthParamx.present == false || pinUvAuthProtocolx == 0 || numberOfCredentialsx == 0)
CBOR_ERROR(CTAP2_ERR_NOT_ALLOWED);
if (credentialCounter == numberOfCredentialsx)
CBOR_ERROR(CTAP2_ERR_NOT_ALLOWED);
if (timerx+30*1000 < board_millis())
CBOR_ERROR(CTAP2_ERR_NOT_ALLOWED);
err:
if (error != CborNoError) {
if (error == CborErrorImproperValue)
return CTAP2_ERR_CBOR_UNEXPECTED_TYPE;
return error;
}
return 0;
}
int cbor_get_assertion(const uint8_t *data, size_t len) {
size_t resp_size = 0;
@@ -289,6 +307,7 @@ int cbor_get_assertion(const uint8_t *data, size_t len) {
extensionx = extensions;
optionsx = options;
flagsx = flags;
timerx = board_millis();
}
}
@@ -302,7 +321,6 @@ int cbor_get_assertion(const uint8_t *data, size_t len) {
size_t ext_len = 0;
uint8_t ext [512];
/*
if (extensions.present == true) {
cbor_encoder_init(&encoder, ext, sizeof(ext), 0);
int l = 0;
@@ -354,7 +372,7 @@ int cbor_get_assertion(const uint8_t *data, size_t len) {
CBOR_ERROR(CTAP1_ERR_INVALID_PARAMETER);
}
uint8_t cred_random[64], *crd = NULL;
ret = credential_derive_hmac_key(cred_id, cred_id_len, cred_random);
ret = credential_derive_hmac_key(selcred->id.data, selcred->id.len, cred_random);
if (ret != 0) {
mbedtls_platform_zeroize(sharedSecret, sizeof(sharedSecret));
CBOR_ERROR(CTAP1_ERR_INVALID_PARAMETER);
@@ -375,7 +393,7 @@ int cbor_get_assertion(const uint8_t *data, size_t len) {
ext_len = cbor_encoder_get_buffer_size(&encoder, ext);
flags |= FIDO2_AUT_FLAG_ED;
}
*/
uint32_t ctr = *(uint32_t *)file_get_data(ef_counter);
size_t aut_data_len = 32 + 1 + 4 + ext_len;