topic Does any WriteBinary example exist? in Secure Authentication

Does any WriteBinary example exist?

simon_ger — Fri, 25 Sep 2020 07:56:38 GMT

Hi,

for quick evalution it would be fine to write and read binary files to/from SE050 (to get a whole chain of instructions manually run).

I can´t find any example program or ssscli command to do so.

Is there any program/ssscli command available? If not, could you provide one?

Re: Does any WriteBinary example exist?

Kan_Li — Wed, 30 Sep 2020 07:48:04 GMT

Hi @simon_ger ,

Actually there is an MW example for this function, and you may find it in the demo of "C:\se050_middleware\simw-top\demos\se05x\se05x_Delete_and_test_provision", the code is something as below:

Hope that helps,

Have a great day,
Kan

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Re: Does any WriteBinary example exist?

simon_ger — Wed, 30 Sep 2020 10:13:26 GMT

@Kan_LiThanks!

Sorry, my first post was not very precise: I would like to have a example program which I can pass my own binary file to. E.g. like cmd-line parameter.

Is there any?

It would be fine to be able to "play" a whole chain of steps just by example programs (i.e. write data, gen keys, do signing, read, verify). So we could do the whole steps once manually for evaluation.

Re: Does any WriteBinary example exist?

Kan_Li — Fri, 06 Nov 2020 09:00:31 GMT

Hello @simon_ger ,

WriteBinary is e.g. used in ssscli to store a certificate on the SE:

ssscli set cert [keyid] [cert]

on example se05x_InjectCertificate here sss_key_store_set_key is used with the type of an binary (kSSS_CipherType_Binary) which ends up writing it as binary as well:

LOG_I("Injecting ECC certificate at 0x%08X", ecc_object_id);
status =
sss_key_store_set_key(&pCtx->ks, &ecc_cert_object, ecc_cert, sizeof(ecc_cert), sizeof(ecc_cert) * 8, NULL, 0);

On example se05x_delete_and_test_provision the underlying API to write a binary is directly called:

sw_status = Se05x_API_WriteBinary(&pSession->s_ctx,
NULL,
kSE05x_AppletResID_UNIQUE_ID,
0,
(uint16_t)uidLen,
const_uid,
uidLen);

Hope that helps,

Have a great day,
Kan