[U-Boot] [PATCH v3 6/6] test: add rsa_verify() unit test

[AKASHI Takahiro <takahiro.akashi@linaro.org>]

Simon,

On Tue, Nov 19, 2019 at 06:59:57PM -0800, Simon Glass wrote:
> Hi Takahiro,
> 
> On Tue, 12 Nov 2019 at 16:47, AKASHI Takahiro
> <takahiro.akashi@linaro.org> wrote:
> >
> > In this patch, a very simple test is added to verify that rsa_verify()
> > using rsa_verify_with_pkey() work correctly.
> >
> > To keep the code simple, all the test data, either public key and
> > verified binary data, are embedded in the source.
> >
> > Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
> > ---
> >  test/Kconfig      |  12 +++
> >  test/lib/Makefile |   1 +
> >  test/lib/rsa.c    | 207 ++++++++++++++++++++++++++++++++++++++++++++++
> >  3 files changed, 220 insertions(+)
> >  create mode 100644 test/lib/rsa.c
> >
> > diff --git a/test/Kconfig b/test/Kconfig
> > index cb7954041eda..64d76c3b20a5 100644
> > --- a/test/Kconfig
> > +++ b/test/Kconfig
> > @@ -28,6 +28,18 @@ config UT_LIB_ASN1
> >           Enables a test which exercises asn1 compiler and decoder function
> >           via various parsers.
> >
> > +config UT_LIB_RSA
> > +       bool "Unit test for rsa_verify() function"
> > +       imply RSA
> > +       imply ASYMMETRIC_KEY_TYPE
> > +       imply ASYMMETRIC_PUBLIC_KEY_SUBTYPE
> > +       imply RSA_PUBLIC_KEY_PARSER
> > +       imply RSA_VERIFY_WITH_PKEY
> > +       default y
> > +       help
> > +         Enables rsa_verify() test, currently rsa_verify_with_pkey only()
> > +         only, at the 'ut lib' command.
> > +
> >  endif
> >
> >  config UT_TIME
> > diff --git a/test/lib/Makefile b/test/lib/Makefile
> > index 72d2ec74b5f4..2bf6ef3935bb 100644
> > --- a/test/lib/Makefile
> > +++ b/test/lib/Makefile
> > @@ -8,3 +8,4 @@ obj-y += lmb.o
> >  obj-y += string.o
> >  obj-$(CONFIG_ERRNO_STR) += test_errno_str.o
> >  obj-$(CONFIG_UT_LIB_ASN1) += asn1.o
> > +obj-$(CONFIG_UT_LIB_RSA) += rsa.o
> > diff --git a/test/lib/rsa.c b/test/lib/rsa.c
> > new file mode 100644
> > index 000000000000..ef3860b59a2b
> > --- /dev/null
> > +++ b/test/lib/rsa.c
> > @@ -0,0 +1,207 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +/*
> > + * Copyright (c) 2019 Linaro Limited
> > + * Author: AKASHI Takahiro
> > + *
> > + * Unit test for rsa_verify() function
> > + */
> > +
> > +#include <common.h>
> > +#include <command.h>
> > +#include <test/lib.h>
> > +#include <test/test.h>
> > +#include <test/ut.h>
> > +
> > +#include <image.h>
> 
> This should go below command.h above

Okay.

> [..]
> 
> > +/**
> > + * lib_rsa_verify_valid() - unit test for rsa_verify()
> > + *
> > + * Test rsa_verify() with valid hash
> > + *
> > + * @uts:       unit test state
> > + * Return:     0 = success, 1 = failure
> > + */
> > +static int lib_rsa_verify_valid(struct unit_test_state *uts)
> > +{
> > +       struct image_sign_info info;
> > +       struct image_region reg;
> > +       int ret;
> > +
> > +       memset(&info, '\0', sizeof(info));
> > +       info.name = "sha256,rsa2048";
> > +       info.padding = image_get_padding_algo("pkcs-1.5");
> > +       info.checksum = image_get_checksum_algo("sha256,rsa2048");
> > +       info.crypto = image_get_crypto_algo(info.name);
> > +
> > +       info.key = public_key;
> > +       info.keylen = public_key_len;
> > +
> > +       reg.data = data_raw;
> > +       reg.size = data_raw_len;
> > +       ret = rsa_verify(&info, &reg, 1, data_enc, data_enc_len);
> > +       ut_assertf(ret == 0, "verification unexpectedly failed (%d)\n", ret);
> 
> Should there not be a test for success as well?

I'm not quite sure what you meant here.
I think that lib_rsa_verify_invalid() covers a test case for your request.

Thanks,
-Takahiro Akashi


> > +
> > +       return CMD_RET_SUCCESS;
> > +}
> > +
> > +LIB_TEST(lib_rsa_verify_valid, 0);