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OTP static passwords are 38 bytes length.

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A static password uses fixed, uid and key fields (sum 38). However, Yubikey sets short_ticket flag which implies the half of the password is sent.

Fixes #29.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos 2023-11-16 20:16:23 +01:00
parent 195096ad52
commit 96de6efed6
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GPG Key ID: C0095B7870A4CCD3
1 changed files with 3 additions and 2 deletions
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5
src/fido/otp.c
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@ -270,10 +270,11 @@ int otp_button_pressed(uint8_t slot) {
}
}
else if (otp_config->cfg_flags & SHORT_TICKET || otp_config->cfg_flags & STATIC_TICKET) {
uint8_t fixed_size = FIXED_SIZE + UID_SIZE + KEY_SIZE;
if (otp_config->cfg_flags & SHORT_TICKET) {
otp_config->fixed_size /= 2;
fixed_size /= 2;
}
add_keyboard_buffer(otp_config->fixed_data, otp_config->fixed_size, false);
add_keyboard_buffer(otp_config->fixed_data, fixed_size, false);
if (otp_config->tkt_flags & APPEND_CR) {
append_keyboard_buffer((const uint8_t *) "\x28", 1);
}