> -----Original Message-----
> From: Arek Kusztal <arkadiuszx.kusz...@intel.com>
> Sent: Wednesday, July 17, 2019 12:23 AM
> To: dev@dpdk.org
> Cc: akhil.go...@nxp.com; fiona.tr...@intel.com; Shally Verma
> <shal...@marvell.com>; Arek Kusztal <arkadiuszx.kusz...@intel.com>
> Subject: [EXT] [PATCH v3 09/11] cryptodev: add RSA padding none
> description
>
> External Email
>
> ----------------------------------------------------------------------
> This patch adds RSA padding none description.
>
> Signed-off-by: Arek Kusztal <arkadiuszx.kusz...@intel.com>
> ---
> lib/librte_cryptodev/rte_crypto_asym.h | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/lib/librte_cryptodev/rte_crypto_asym.h
> b/lib/librte_cryptodev/rte_crypto_asym.h
> index 5026042..7f630f0 100644
> --- a/lib/librte_cryptodev/rte_crypto_asym.h
> +++ b/lib/librte_cryptodev/rte_crypto_asym.h
> @@ -90,7 +90,10 @@ enum rte_crypto_asym_xform_type {
> */
> enum rte_crypto_asym_op_type {
> RTE_CRYPTO_ASYM_OP_ENCRYPT,
> - /**< Asymmetric Encrypt operation */
> + /**< RSA no padding scheme.
> + * In this case user is responsible for provision and verification
> + * of padding.
> + */
> RTE_CRYPTO_ASYM_OP_DECRYPT,
> /**< Asymmetric Decrypt operation */
> RTE_CRYPTO_ASYM_OP_SIGN,
> @@ -409,6 +412,11 @@ struct rte_crypto_rsa_op_param {
> * - padding PSS
> * data provided should contain message digest of the message
> * to be signed
> + *
> + * When padding field is set to RTE_CRYPTO_RSA_PADDING_NONE
> + * and RTE_CRYPTO_ASYM_OP_DECRYPT op_type used returned
> data size
> + * will be equal to the size of RSA key in bytes. All leading
> + * zeroes will be preserved.
[Shally] its bit unclear here. So, app is supposed to pass buffer with padding
removed or padding intact? Are leading 0's padding bytes?
If so, I believe app can use any kind of padding, BT2 or OAEP so it does not
have to be necessarily 0. Or
May be I am missing some info here. Could you point me to source which says,
for padding none, data will always be padded with leading 0s?
> */
>
>
> --
> 2.1.0
