From: "Stephan Müller" <smueller@chronox.de>
To: George Cherian <george.cherian@cavium.com>
Cc: herbert@gondor.apana.org.au, davem@davemloft.net,
david.daney@cavium.com, clabbe.montjoie@gmail.com,
linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org
Subject: Re: [PATCH v4 2/3] drivers: crypto: Add the Virtual Function driver for CPT
Date: Wed, 11 Jan 2017 12:12:26 +0100 [thread overview]
Message-ID: <2395769.pOGQxxvRjM@positron.chronox.de> (raw)
In-Reply-To: <1484132211-917-3-git-send-email-george.cherian@cavium.com>
Am Mittwoch, 11. Januar 2017, 10:56:50 CET schrieb George Cherian:
Hi George,
> +int cvm_enc_dec_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
> + u32 keylen)
> +{
> + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
> + struct cvm_enc_ctx *ctx = crypto_tfm_ctx(tfm);
> +
> + if ((keylen == 16) || (keylen == 24) || (keylen == 32)) {
> + ctx->key_len = keylen;
> + memcpy(ctx->enc_key, key, keylen);
> + return 0;
> + }
> + crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
> +
> + return -EINVAL;
> +}
...
> +
> +struct crypto_alg algs[] = { {
> + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
> + .cra_blocksize = AES_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct cvm_enc_ctx),
> + .cra_alignmask = 7,
> + .cra_priority = 4001,
> + .cra_name = "xts(aes)",
> + .cra_driver_name = "cavium-xts-aes",
> + .cra_type = &crypto_ablkcipher_type,
> + .cra_u = {
> + .ablkcipher = {
> + .ivsize = AES_BLOCK_SIZE,
> + .min_keysize = AES_MIN_KEY_SIZE,
> + .max_keysize = AES_MAX_KEY_SIZE,
> + .setkey = cvm_enc_dec_setkey,
May I ask how the setkey for XTS is intended to work? The XTS keys are double
in size than "normal" keys.
> + .encrypt = cvm_aes_encrypt_xts,
> + .decrypt = cvm_aes_decrypt_xts,
> + },
Ciao
Stephan
next prev parent reply other threads:[~2017-01-11 11:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-11 10:56 [PATCH v4 0/3] Add Support for Cavium Cryptographic Acceleration Unit George Cherian
2017-01-11 10:56 ` [PATCH v4 1/3] drivers: crypto: Add Support for Octeon-tx CPT Engine George Cherian
2017-01-11 10:56 ` [PATCH v4 2/3] drivers: crypto: Add the Virtual Function driver for CPT George Cherian
2017-01-11 11:12 ` Stephan Müller [this message]
2017-01-11 11:28 ` George Cherian
2017-01-11 12:39 ` Stephan Müller
2017-01-12 11:10 ` George Cherian
2017-01-12 11:19 ` Stephan Müller
2017-01-12 11:20 ` George Cherian
2017-01-11 10:56 ` [PATCH v4 3/3] drivers: crypto: Enable CPT options crypto for build George Cherian
2017-01-12 12:40 ` kbuild test robot
2017-01-12 13:38 ` kbuild test robot
2017-01-12 13:38 ` [PATCH] drivers: crypto: fix ifnullfree.cocci warnings kbuild test robot
2017-01-12 14:04 ` [PATCH v4 3/3] drivers: crypto: Enable CPT options crypto for build kbuild test robot
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