Re: [dpdk-users] AES "Digest-encrypted" crypto chain case.

[Naveen Kumar <Naveen.Kumar@commagility.com>]

Hi Fiona,
Thanks for prompt response.
I observe digest overwriting issue with below combination (chained):

//
    auth_xform->type = RTE_CRYPTO_SYM_XFORM_AUTH;
    auth_xform->auth.algo = RTE_CRYPTO_AUTH_AES_CMAC;
    auth_xform->auth.op = RTE_CRYPTO_AUTH_OP_GENERATE;

    cipher_xform->type = RTE_CRYPTO_SYM_XFORM_CIPHER;
    cipher_xform->cipher.algo = RTE_CRYPTO_CIPHER_AES_CTR;
    cipher_xform->cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
//

Testing with snow3g and ZUC on same test suite i.e, encryption including digest, works as expected.

regards,
Naveen


--
Naveen Kumar
Senior Engineer

CommAgility is a Wireless Telecom Group company
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-----Original Message-----
From: Trahe, Fiona <fiona.trahe@intel.com>
Sent: Monday, September 9, 2019 4:09 PM
To: Naveen Kumar <Naveen.Kumar@commagility.com>; users@dpdk.org
Cc: Trahe, Fiona <fiona.trahe@intel.com>
Subject: RE: [dpdk-users] AES "Digest-encrypted" crypto chain case.

Hi Naveen,

Which chain exactly are you testing? i.e. which cipher mode, which auth algorithm?
Our tests so far have focussed on ZUC and Snow3G use-cases.

Fiona

> -----Original Message-----
> From: users [mailto:users-bounces@dpdk.org] On Behalf Of Naveen Kumar
> Sent: Monday, September 9, 2019 10:16 AM
> To: users@dpdk.org
> Subject: [dpdk-users] AES "Digest-encrypted" crypto chain case.
>
> Hi All,
> I am trying to test AES symmetric crypto case  "Digest-encrypted" by
> chaining Authentication operation followed by Ciphering.
> Digest data pointer, Ciphering lengths etc., are configured such that
> ciphering operation includes the digest data (as mentioned in ‘rte_crypto_sym.h’ line:650-715).
>
> With QAT PMD, I see the ‘raw’ digest data overwritten on the ciphered output as end result.
>
> This issue is seen only with AES - ‘Digest-Encrypt’ chained operation.
> Not with Snow3G/ZUC chained operations.
>
> Does anyone face this issue?
>
> Regards,
> Naveen
>
> --
> Naveen Kumar
> Senior Engineer
>
> CommAgility is a Wireless Telecom Group company
> T: +49 (0)203 306 4537 | www.commagility.com Registered in England,
> Company No. 05914025. VAT No. DE299686390 CommAgility is an ISO
> 9001:2015-certified company This email is confidential, for
> recipient’s use only.