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Added support for challenge-response HMAC SHA1.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos 2023-04-01 01:05:09 +02:00
parent c23d92ea28
commit c9eacc4a3d
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1 changed files with 10 additions and 0 deletions
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src/fido/otp.c
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@ -356,6 +356,16 @@ int cmd_otp() {
#endif
res_APDU_size = 4;
}
else if (p1 == 0x30 || p1 == 0x38) {
file_t *ef = search_dynamic_file(p1 == 0x30 ? EF_OTP_SLOT1 : EF_OTP_SLOT2);
if (file_has_data(ef)) {
otp_config_t *otp_config = (otp_config_t *)file_get_data(ef);
int ret = mbedtls_md_hmac(mbedtls_md_info_from_type(MBEDTLS_MD_SHA1), otp_config->aes_key, KEY_SIZE, apdu.data, 8, res_APDU);
if (ret == 0) {
res_APDU_size = 20;
}
}
}
return SW_OK();
}