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cryptodev: clarify usage of random numbers in asym

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This commit clarifies usage of random numbers in asymmetric
crypto API.

The user is now allowed to provide information to the PMD if random
number should be generated or should be read from user input.
If PMD does not support random number generation user should
always provide it, if PMD does not support user random,
rte_crypto_param.data accordingly should be set to NULL.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
This commit is contained in:
Arek Kusztal 2022-02-11 16:02:36 +00:00 committed by Akhil Goyal
parent a678c5d365
commit baf482c0e3
1 changed files with 11 additions and 2 deletions
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13
lib/cryptodev/rte_crypto_asym.h
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@ -33,6 +33,11 @@ extern "C" {
* These buffers can be used for both input to PMD and output from PMD. When
* used for output from PMD, application has to ensure the buffer is large
* enough to hold the target data.
*
* If an operation requires the PMD to generate a random number,
* and the device supports CSRNG, 'data' should be set to NULL.
* The crypto parameter in question will not be used by the PMD,
* as it is internally generated.
*/
typedef struct rte_crypto_param_t {
uint8_t *data;
@ -549,7 +554,9 @@ struct rte_crypto_dsa_op_param {
/**< input message to be signed or verified */
rte_crypto_param k;
/**< Per-message secret number, which is an integer
* in the interval (1, q-1)
* in the interval (1, q-1).
* If the random number is generated by the PMD,
* the 'rte_crypto_param.data' parameter should be set to NULL.
*/
rte_crypto_param r;
/**< dsa sign component 'r' value
@ -589,7 +596,9 @@ struct rte_crypto_ecdsa_op_param {
rte_crypto_param k;
/**< The ECDSA per-message secret number, which is an integer
* in the interval (1, n-1)
* in the interval (1, n-1).
* If the random number is generated by the PMD,
* the 'rte_crypto_param.data' parameter should be set to NULL.
*/
rte_crypto_param r;