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totp : rework and add SHA256/512 (#151)

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* totp : rework and add SHA256/512

* totp : comment code

* totp : fix SHA224/SHA384 and examples

* totp : fix bug in totp_face_lfs

* totp : init_totp_record to SHA1

* totp : move TOTP-MCU to TOTP, update README and example

* totp : SHAX, use size_t n instead of harcoded 8

* clarify what to put in TOTP face

Co-authored-by: Emilien <Emilien>
Co-authored-by: joeycastillo <joeycastillo@utexas.edu>
This commit is contained in:
EmilienCourt
2023-01-14 17:58:03 +01:00
committed by GitHub
parent 2e61885070
commit 9ebea46300
16 changed files with 1628 additions and 251 deletions
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21
movement/watch_faces/complication/totp_face_lfs.c
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@@ -40,6 +40,7 @@ struct totp_record {
size_t secret_size;
char label[2];
uint32_t period;
hmac_alg algorithm;
};
static struct totp_record totp_records[MAX_TOTP_RECORDS];
@@ -50,6 +51,7 @@ static void init_totp_record(struct totp_record *totp_record) {
totp_record->label[0] = 'A';
totp_record->label[1] = 'A';
totp_record->period = 30;
totp_record->algorithm = SHA1;
}
static bool totp_face_lfs_read_param(struct totp_record *totp_record, char *param, char *value) {
@@ -84,7 +86,22 @@ static bool totp_face_lfs_read_param(struct totp_record *totp_record, char *para
return false;
}
} else if (!strcmp(param, "algorithm")) {
if (!strcmp(param, "SHA1")) {
if (!strcmp(value, "SHA1")) {
totp_record->algorithm = SHA1;
}
else if (!strcmp(value, "SHA224")) {
totp_record->algorithm = SHA224;
}
else if (!strcmp(value, "SHA256")) {
totp_record->algorithm = SHA256;
}
else if (!strcmp(value, "SHA384")) {
totp_record->algorithm = SHA384;
}
else if (!strcmp(value, "SHA512")) {
totp_record->algorithm = SHA512;
}
else {
printf("TOTP ignored due to algorithm %s\n", value);
return false;
}
@@ -169,7 +186,7 @@ static void totp_face_set_record(totp_lfs_state_t *totp_state, int i) {
}
totp_state->current_index = i;
TOTP(totp_records[i].secret, totp_records[i].secret_size, totp_records[i].period);
TOTP(totp_records[i].secret, totp_records[i].secret_size, totp_records[i].period, totp_records[i].algorithm);
totp_state->current_code = getCodeFromTimestamp(totp_state->timestamp);
totp_state->steps = totp_state->timestamp / totp_records[i].period;
}