From 31d2b4fd90f9305aad2e79872067e6c0243267de Mon Sep 17 00:00:00 2001 From: Ruchika Gupta Date: Fri, 23 Jan 2015 16:01:52 +0530 Subject: DM: crypto/rsa_mod_exp: Add rsa Modular Exponentiation DM driver Add a new rsa uclass for performing modular exponentiation and implement the software driver basing on this uclass. Signed-off-by: Ruchika Gupta CC: Simon Glass Acked-by: Simon Glass --- drivers/crypto/Makefile | 1 + drivers/crypto/rsa_mod_exp/Kconfig | 5 ++++ drivers/crypto/rsa_mod_exp/Makefile | 7 ++++++ drivers/crypto/rsa_mod_exp/mod_exp_sw.c | 39 +++++++++++++++++++++++++++++ drivers/crypto/rsa_mod_exp/mod_exp_uclass.c | 31 +++++++++++++++++++++++ 5 files changed, 83 insertions(+) create mode 100644 drivers/crypto/rsa_mod_exp/Kconfig create mode 100644 drivers/crypto/rsa_mod_exp/Makefile create mode 100644 drivers/crypto/rsa_mod_exp/mod_exp_sw.c create mode 100644 drivers/crypto/rsa_mod_exp/mod_exp_uclass.c (limited to 'drivers') diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile index 7b79237181..fb8c10b38c 100644 --- a/drivers/crypto/Makefile +++ b/drivers/crypto/Makefile @@ -6,4 +6,5 @@ # obj-$(CONFIG_EXYNOS_ACE_SHA) += ace_sha.o +obj-y += rsa_mod_exp/ obj-y += fsl/ diff --git a/drivers/crypto/rsa_mod_exp/Kconfig b/drivers/crypto/rsa_mod_exp/Kconfig new file mode 100644 index 0000000000..6dcb39a8d3 --- /dev/null +++ b/drivers/crypto/rsa_mod_exp/Kconfig @@ -0,0 +1,5 @@ +config DM_MOD_EXP + bool "Enable Driver Model for RSA Modular Exponentiation" + depends on DM + help + If you want to use driver model for RSA Modular Exponentiation, say Y. diff --git a/drivers/crypto/rsa_mod_exp/Makefile b/drivers/crypto/rsa_mod_exp/Makefile new file mode 100644 index 0000000000..915b751dbe --- /dev/null +++ b/drivers/crypto/rsa_mod_exp/Makefile @@ -0,0 +1,7 @@ +# +# (C) Copyright 2014 Freescale Semiconductor, Inc. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-$(CONFIG_RSA) += mod_exp_uclass.o mod_exp_sw.o diff --git a/drivers/crypto/rsa_mod_exp/mod_exp_sw.c b/drivers/crypto/rsa_mod_exp/mod_exp_sw.c new file mode 100644 index 0000000000..dc6c064b4e --- /dev/null +++ b/drivers/crypto/rsa_mod_exp/mod_exp_sw.c @@ -0,0 +1,39 @@ +/* + * (C) Copyright 2014 Freescale Semiconductor, Inc. + * Author: Ruchika Gupta + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +int mod_exp_sw(struct udevice *dev, const uint8_t *sig, uint32_t sig_len, + struct key_prop *prop, uint8_t *out) +{ + int ret = 0; + + ret = rsa_mod_exp_sw(sig, sig_len, prop, out); + if (ret) { + debug("%s: RSA failed to verify: %d\n", __func__, ret); + return ret; + } + + return 0; +} + +static const struct mod_exp_ops mod_exp_ops_sw = { + .mod_exp = mod_exp_sw, +}; + +U_BOOT_DRIVER(mod_exp_sw) = { + .name = "mod_exp_sw", + .id = UCLASS_MOD_EXP, + .ops = &mod_exp_ops_sw, +}; + +U_BOOT_DEVICE(mod_exp_sw) = { + .name = "mod_exp_sw", +}; diff --git a/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c b/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c new file mode 100644 index 0000000000..266f09484f --- /dev/null +++ b/drivers/crypto/rsa_mod_exp/mod_exp_uclass.c @@ -0,0 +1,31 @@ +/* + * (C) Copyright 2014 Freescale Semiconductor, Inc + * Author: Ruchika Gupta + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +int rsa_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len, + struct key_prop *node, uint8_t *out) +{ + const struct mod_exp_ops *ops = device_get_ops(dev); + + if (!ops->mod_exp) + return -ENOSYS; + + return ops->mod_exp(dev, sig, sig_len, node, out); +} + +UCLASS_DRIVER(mod_exp) = { + .id = UCLASS_MOD_EXP, + .name = "rsa_mod_exp", +}; -- cgit v1.2.1