linux/drivers/crypto/caam/pkc_desc.c
Tudor Ambarus 8c419778ab crypto: caam - add support for RSA algorithm
Add RSA support to caam driver.

Initial author is Yashpal Dutta <yashpal.dutta@freescale.com>.

Signed-off-by: Tudor Ambarus <tudor-dan.ambarus@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-07-05 23:05:24 +08:00

37 lines
1.1 KiB
C

/*
* caam - Freescale FSL CAAM support for Public Key Cryptography descriptors
*
* Copyright 2016 Freescale Semiconductor, Inc.
*
* There is no Shared Descriptor for PKC so that the Job Descriptor must carry
* all the desired key parameters, input and output pointers.
*/
#include "caampkc.h"
#include "desc_constr.h"
/* Descriptor for RSA Public operation */
void init_rsa_pub_desc(u32 *desc, struct rsa_pub_pdb *pdb)
{
init_job_desc_pdb(desc, 0, sizeof(*pdb));
append_cmd(desc, pdb->sgf);
append_ptr(desc, pdb->f_dma);
append_ptr(desc, pdb->g_dma);
append_ptr(desc, pdb->n_dma);
append_ptr(desc, pdb->e_dma);
append_cmd(desc, pdb->f_len);
append_operation(desc, OP_TYPE_UNI_PROTOCOL | OP_PCLID_RSAENC_PUBKEY);
}
/* Descriptor for RSA Private operation - Private Key Form #1 */
void init_rsa_priv_f1_desc(u32 *desc, struct rsa_priv_f1_pdb *pdb)
{
init_job_desc_pdb(desc, 0, sizeof(*pdb));
append_cmd(desc, pdb->sgf);
append_ptr(desc, pdb->g_dma);
append_ptr(desc, pdb->f_dma);
append_ptr(desc, pdb->n_dma);
append_ptr(desc, pdb->d_dma);
append_operation(desc, OP_TYPE_UNI_PROTOCOL | OP_PCLID_RSADEC_PRVKEY |
RSA_PRIV_KEY_FRM_1);
}