fsl_rsa.c 1.2 KB

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  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. #include <config.h>
  7. #include <common.h>
  8. #include <dm.h>
  9. #include <log.h>
  10. #include <asm/types.h>
  11. #include <malloc.h>
  12. #include "jobdesc.h"
  13. #include "desc.h"
  14. #include "jr.h"
  15. #include "rsa_caam.h"
  16. #include <u-boot/rsa-mod-exp.h>
  17. int fsl_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len,
  18. struct key_prop *prop, uint8_t *out)
  19. {
  20. uint32_t keylen;
  21. struct pk_in_params pkin;
  22. uint32_t desc[MAX_CAAM_DESCSIZE];
  23. int ret;
  24. /* Length in bytes */
  25. keylen = prop->num_bits / 8;
  26. pkin.a = sig;
  27. pkin.a_siz = sig_len;
  28. pkin.n = prop->modulus;
  29. pkin.n_siz = keylen;
  30. pkin.e = prop->public_exponent;
  31. pkin.e_siz = prop->exp_len;
  32. inline_cnstr_jobdesc_pkha_rsaexp(desc, &pkin, out, sig_len);
  33. ret = run_descriptor_jr(desc);
  34. if (ret) {
  35. debug("%s: RSA failed to verify: %d\n", __func__, ret);
  36. return -EFAULT;
  37. }
  38. return 0;
  39. }
  40. static const struct mod_exp_ops fsl_mod_exp_ops = {
  41. .mod_exp = fsl_mod_exp,
  42. };
  43. U_BOOT_DRIVER(fsl_rsa_mod_exp) = {
  44. .name = "fsl_rsa_mod_exp",
  45. .id = UCLASS_MOD_EXP,
  46. .ops = &fsl_mod_exp_ops,
  47. };
  48. U_BOOT_DRVINFO(fsl_rsa) = {
  49. .name = "fsl_rsa_mod_exp",
  50. };