LXR uboot/drivers/crypto/fsl/fsl

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2014 Freescale Semiconductor, Inc.
   4 * Author: Ruchika Gupta <ruchika.gupta@freescale.com>
   5 */
   6
   7#include <config.h>
   8#include <common.h>
   9#include <dm.h>
  10#include <log.h>
  11#include <asm/types.h>
  12#include <malloc.h>
  13#include "jobdesc.h"
  14#include "desc.h"
  15#include "jr.h"
  16#include "rsa_caam.h"
  17#include <u-boot/rsa-mod-exp.h>
  18
  19int fsl_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len,
  20                struct key_prop *prop, uint8_t *out)
  21{
  22        uint32_t keylen;
  23        struct pk_in_params pkin;
  24        uint32_t desc[MAX_CAAM_DESCSIZE];
  25        int ret;
  26
  27        /* Length in bytes */
  28        keylen = prop->num_bits / 8;
  29
  30        pkin.a = sig;
  31        pkin.a_siz = sig_len;
  32        pkin.n = prop->modulus;
  33        pkin.n_siz = keylen;
  34        pkin.e = prop->public_exponent;
  35        pkin.e_siz = prop->exp_len;
  36
  37        inline_cnstr_jobdesc_pkha_rsaexp(desc, &pkin, out, sig_len);
  38
  39        ret = run_descriptor_jr(desc);
  40        if (ret) {
  41                debug("%s: RSA failed to verify: %d\n", __func__, ret);
  42                return -EFAULT;
  43        }
  44
  45        return 0;
  46}
  47
  48static const struct mod_exp_ops fsl_mod_exp_ops = {
  49        .mod_exp        = fsl_mod_exp,
  50};
  51
  52U_BOOT_DRIVER(fsl_rsa_mod_exp) = {
  53        .name   = "fsl_rsa_mod_exp",
  54        .id     = UCLASS_MOD_EXP,
  55        .ops    = &fsl_mod_exp_ops,
  56};
  57
  58U_BOOT_DEVICE(fsl_rsa) = {
  59        .name = "fsl_rsa_mod_exp",
  60};
  61