linux-kernel - Re: [RFC PATCH 2/3] crypto: Add Xilinx SHA3 driver

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Date:   Mon, 7 Jan 2019 08:56:07 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     Kalyani Akula <kalyani.akula@...inx.com>
Cc:     herbert@...dor.apana.org.au, davem@...emloft.net,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kalyani Akula <kalyania@...inx.com>,
        Sarat Chand Savitala <saratcha@...inx.com>
Subject: Re: [RFC PATCH 2/3] crypto: Add Xilinx SHA3 driver

Hi Kalyani,

On Mon, Jan 07, 2019 at 02:32:55PM +0530, Kalyani Akula wrote:
> This patch adds SHA3 driver suuport for the Xilinx
> ZynqMP SoC.
> 
> Signed-off-by: Kalyani Akula <kalyani.akula@...inx.com>
[...]
> +
> +static struct ahash_alg sha3_alg = {
> +	.init		= zynqmp_sha_init,
> +	.update		= zynqmp_sha_update,
> +	.final		= zynqmp_sha_final,
> +	.finup		= zynqmp_sha_finup,
> +	.digest		= zynqmp_sha_digest,
> +	.export		= zynqmp_sha_export,
> +	.import		= zynqmp_sha_import,
> +	.halg = {
> +		.digestsize	= SHA384_DIGEST_SIZE,
> +		.statesize	= sizeof(struct sha256_state),
> +		.base	= {
> +			.cra_name		= "xilinx-keccak-384",
> +			.cra_driver_name	= "zynqmp-keccak-384",
> +			.cra_priority		= 300,
> +			.cra_flags		= CRYPTO_ALG_ASYNC,
> +			.cra_blocksize		= SHA384_BLOCK_SIZE,
> +			.cra_ctxsize		= sizeof(struct zynqmp_sha_ctx),
> +			.cra_alignmask		= 0,
> +			.cra_module		= THIS_MODULE,
> +			.cra_init		= zynqmp_sha_cra_init,
> +		}
> +	}
> +};

cra_name needs to match an algorithm that has a generic implementation.
It should be "sha3-384", or is your hardware not compatible?
Also does your hardware not support sha3-256 and sha3-512?

- Eric