lib/crypto: tests: Add KUnit tests for SHA-224 and SHA-256

Eric Biggers · Eric Biggers · commit 4dcf6caddaa0 · 2025-07-14T11:29:36.000-07:00
Add KUnit test suites for the SHA-224 and SHA-256 library functions, including the corresponding HMAC support. The core test logic is in the previously-added hash-test-template.h. This commit just adds the actual KUnit suites, and it adds the generated test vectors to the tree so that gen-hash-testvecs.py won't have to be run at build time. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250709200112.258500-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
diff --git a/lib/crypto/Kconfig b/lib/crypto/Kconfig
@@ -194,6 +194,8 @@ config CRYPTO_LIB_SHA512_ARCH
 config CRYPTO_LIB_SM3
 	tristate
 
+source "lib/crypto/tests/Kconfig"
+
 if !KMSAN # avoid false positives from assembly
 if ARM
 source "lib/crypto/arm/Kconfig"
diff --git a/lib/crypto/Makefile b/lib/crypto/Makefile
@@ -8,6 +8,8 @@ quiet_cmd_perlasm = PERLASM $@
 quiet_cmd_perlasm_with_args = PERLASM $@
       cmd_perlasm_with_args = $(PERL) $(<) void $(@)
 
+obj-$(CONFIG_KUNIT)				+= tests/
+
 obj-$(CONFIG_CRYPTO_HASH_INFO)			+= hash_info.o
 
 obj-$(CONFIG_CRYPTO_LIB_UTILS)			+= libcryptoutils.o
diff --git a/lib/crypto/tests/Kconfig b/lib/crypto/tests/Kconfig
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Option is named *_SHA256_KUNIT_TEST, though both SHA-224 and SHA-256 tests are
+# included, for consistency with the naming used elsewhere (e.g. CRYPTO_SHA256).
+config CRYPTO_LIB_SHA256_KUNIT_TEST
+	tristate "KUnit tests for SHA-224 and SHA-256" if !KUNIT_ALL_TESTS
+	depends on KUNIT
+	default KUNIT_ALL_TESTS || CRYPTO_SELFTESTS
+	select CRYPTO_LIB_BENCHMARK_VISIBLE
+	select CRYPTO_LIB_SHA256
+	help
+	  KUnit tests for the SHA-224 and SHA-256 cryptographic hash functions
+	  and their corresponding HMACs.
+
+config CRYPTO_LIB_BENCHMARK_VISIBLE
+	bool
+
+config CRYPTO_LIB_BENCHMARK
+	bool "Include benchmarks in KUnit tests for cryptographic functions"
+	depends on CRYPTO_LIB_BENCHMARK_VISIBLE
+	help
+	  Include benchmarks in the KUnit tests for cryptographic functions.
+	  The benchmark results are printed to the kernel log when the
+	  corresponding KUnit test suite runs.
+
+	  This is useful for evaluating the performance of the cryptographic
+	  functions.  However, it will increase the runtime of the KUnit tests.
+
+	  If you're only interested in correctness testing, leave this disabled.
diff --git a/lib/crypto/tests/Makefile b/lib/crypto/tests/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+obj-$(CONFIG_CRYPTO_LIB_SHA256_KUNIT_TEST) += sha224_kunit.o sha256_kunit.o
diff --git a/lib/crypto/tests/sha224-testvecs.h b/lib/crypto/tests/sha224-testvecs.h
@@ -0,0 +1,238 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* This file was generated by: ./scripts/crypto/gen-hash-testvecs.py sha224 */
+
+static const struct {
+	size_t data_len;
+	u8 digest[SHA224_DIGEST_SIZE];
+} hash_testvecs[] = {
+	{
+		.data_len = 0,
+		.digest = {
+			0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9,
+			0x47, 0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4,
+			0x15, 0xa2, 0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a,
+			0xc5, 0xb3, 0xe4, 0x2f,
+		},
+	},
+	{
+		.data_len = 1,
+		.digest = {
+			0xe3, 0x4d, 0x79, 0x17, 0x75, 0x35, 0xdc, 0xd2,
+			0x27, 0xc9, 0x9d, 0x0b, 0x90, 0x0f, 0x21, 0x5d,
+			0x95, 0xfb, 0x9c, 0x6d, 0xa8, 0xec, 0x19, 0x15,
+			0x12, 0xef, 0xf5, 0x0f,
+		},
+	},
+	{
+		.data_len = 2,
+		.digest = {
+			0x81, 0xc7, 0x60, 0x0d, 0x6d, 0x13, 0x75, 0x70,
+			0x4b, 0xc0, 0xab, 0xea, 0x04, 0xe3, 0x78, 0x7e,
+			0x73, 0xb9, 0x0f, 0xb6, 0xae, 0x90, 0xf3, 0x94,
+			0xb2, 0x56, 0xda, 0xc8,
+		},
+	},
+	{
+		.data_len = 3,
+		.digest = {
+			0x24, 0xf0, 0x8c, 0x6e, 0x9d, 0xd6, 0x06, 0x80,
+			0x0a, 0x03, 0xee, 0x9b, 0x33, 0xec, 0x83, 0x42,
+			0x2c, 0x8b, 0xe7, 0xc7, 0xc6, 0x04, 0xfb, 0xc6,
+			0xa3, 0x3a, 0x4d, 0xc9,
+		},
+	},
+	{
+		.data_len = 16,
+		.digest = {
+			0x1c, 0x08, 0xa8, 0x55, 0x8f, 0xc6, 0x0a, 0xea,
+			0x2f, 0x1b, 0x54, 0xff, 0x8d, 0xd2, 0xa3, 0xc7,
+			0x42, 0xc2, 0x93, 0x3d, 0x73, 0x18, 0x84, 0xba,
+			0x75, 0x49, 0x34, 0xfd,
+		},
+	},
+	{
+		.data_len = 32,
+		.digest = {
+			0x45, 0xdd, 0xb5, 0xf0, 0x3c, 0xda, 0xe6, 0xd4,
+			0x6c, 0x86, 0x91, 0x29, 0x11, 0x2f, 0x88, 0x7d,
+			0xd8, 0x3c, 0xa3, 0xd6, 0xdd, 0x1e, 0xac, 0x98,
+			0xff, 0xf0, 0x14, 0x69,
+		},
+	},
+	{
+		.data_len = 48,
+		.digest = {
+			0x0b, 0xfb, 0x71, 0x4c, 0x06, 0x7a, 0xd5, 0x89,
+			0x76, 0x0a, 0x43, 0x8b, 0x2b, 0x47, 0x12, 0x56,
+			0xa7, 0x64, 0x33, 0x1d, 0xd3, 0x44, 0x17, 0x95,
+			0x23, 0xe7, 0x53, 0x01,
+		},
+	},
+	{
+		.data_len = 49,
+		.digest = {
+			0xc4, 0xae, 0x9c, 0x33, 0xd5, 0x1d, 0xf4, 0xa7,
+			0xfd, 0xb7, 0xd4, 0x6b, 0xc3, 0xeb, 0xa8, 0xbf,
+			0xfb, 0x07, 0x89, 0x4b, 0x07, 0x15, 0x22, 0xec,
+			0xe1, 0x45, 0x84, 0xba,
+		},
+	},
+	{
+		.data_len = 63,
+		.digest = {
+			0xad, 0x01, 0x34, 0x2a, 0xe2, 0x3b, 0x58, 0x06,
+			0x9f, 0x20, 0xc8, 0xfb, 0xf3, 0x20, 0x82, 0xa6,
+			0x9f, 0xee, 0x7a, 0xbe, 0xdf, 0xf3, 0x5d, 0x57,
+			0x9b, 0xce, 0x79, 0x96,
+		},
+	},
+	{
+		.data_len = 64,
+		.digest = {
+			0xa7, 0xa6, 0x47, 0xf7, 0xed, 0x2a, 0xe5, 0xe3,
+			0xc0, 0x1e, 0x7b, 0x40, 0xe4, 0xf7, 0x40, 0x65,
+			0x42, 0xc1, 0x6f, 0x7d, 0x8d, 0x0d, 0x17, 0x4f,
+			0xd3, 0xbc, 0x0d, 0x85,
+		},
+	},
+	{
+		.data_len = 65,
+		.digest = {
+			0xc4, 0x9c, 0xb5, 0x6a, 0x01, 0x2d, 0x10, 0xa9,
+			0x5f, 0xa4, 0x5a, 0xe1, 0xba, 0x40, 0x12, 0x09,
+			0x7b, 0xea, 0xdb, 0xa6, 0x7b, 0xcb, 0x56, 0xf0,
+			0xfd, 0x5b, 0xe2, 0xe7,
+		},
+	},
+	{
+		.data_len = 127,
+		.digest = {
+			0x14, 0xda, 0x0e, 0x01, 0xca, 0x78, 0x7d, 0x2d,
+			0x85, 0xa3, 0xca, 0x0e, 0x80, 0xf9, 0x95, 0x10,
+			0xa1, 0x7b, 0xa5, 0xaa, 0xfc, 0x95, 0x05, 0x08,
+			0x53, 0xda, 0x52, 0xee,
+		},
+	},
+	{
+		.data_len = 128,
+		.digest = {
+			0xa5, 0x24, 0xc4, 0x54, 0xe1, 0x50, 0xab, 0xee,
+			0x22, 0xc1, 0xa7, 0x27, 0x15, 0x2c, 0x6f, 0xf7,
+			0x4c, 0x31, 0xe5, 0x15, 0x25, 0x4e, 0x71, 0xc6,
+			0x7e, 0xa0, 0x11, 0x5d,
+		},
+	},
+	{
+		.data_len = 129,
+		.digest = {
+			0x73, 0xd0, 0x8c, 0xce, 0xed, 0xed, 0x9f, 0xaa,
+			0x21, 0xaf, 0xa2, 0x08, 0x80, 0x16, 0x15, 0x59,
+			0x3f, 0x1d, 0x7f, 0x0a, 0x79, 0x3d, 0x7b, 0x58,
+			0xf8, 0xc8, 0x5c, 0x27,
+		},
+	},
+	{
+		.data_len = 256,
+		.digest = {
+			0x31, 0xa7, 0xa1, 0xca, 0x49, 0x72, 0x75, 0xcc,
+			0x6e, 0x02, 0x9e, 0xad, 0xea, 0x86, 0x5c, 0x91,
+			0x02, 0xe4, 0xc9, 0xf9, 0xd3, 0x9e, 0x74, 0x50,
+			0xd8, 0x43, 0x6b, 0x85,
+		},
+	},
+	{
+		.data_len = 511,
+		.digest = {
+			0x40, 0x60, 0x8b, 0xb0, 0x03, 0xa9, 0x75, 0xab,
+			0x2d, 0x5b, 0x20, 0x9a, 0x05, 0x72, 0xb7, 0xa8,
+			0xce, 0xf2, 0x4f, 0x66, 0x62, 0xe3, 0x7e, 0x24,
+			0xd6, 0xe2, 0xea, 0xfa,
+		},
+	},
+	{
+		.data_len = 513,
+		.digest = {
+			0x4f, 0x5f, 0x9f, 0x1e, 0xb3, 0x66, 0x81, 0xdb,
+			0x41, 0x5d, 0x65, 0x97, 0x00, 0x8d, 0xdc, 0x62,
+			0x03, 0xb0, 0x4d, 0x6b, 0x5c, 0x7f, 0x1e, 0xa0,
+			0xfe, 0xfc, 0x0e, 0xb8,
+		},
+	},
+	{
+		.data_len = 1000,
+		.digest = {
+			0x08, 0xa8, 0xa1, 0xc0, 0xd8, 0xf9, 0xb4, 0xaa,
+			0x53, 0x22, 0xa1, 0x73, 0x0b, 0x45, 0xa0, 0x20,
+			0x72, 0xf3, 0xa9, 0xbc, 0x51, 0xd0, 0x20, 0x79,
+			0x69, 0x97, 0xf7, 0xe3,
+		},
+	},
+	{
+		.data_len = 3333,
+		.digest = {
+			0xe8, 0x60, 0x5f, 0xb9, 0x12, 0xe1, 0x6b, 0x24,
+			0xc5, 0xe8, 0x43, 0xa9, 0x5c, 0x3f, 0x65, 0xed,
+			0xbe, 0xfd, 0x77, 0xf5, 0x47, 0xf2, 0x75, 0x21,
+			0xc2, 0x8f, 0x54, 0x8f,
+		},
+	},
+	{
+		.data_len = 4096,
+		.digest = {
+			0xc7, 0xdf, 0x50, 0x16, 0x10, 0x01, 0xb7, 0xdf,
+			0x34, 0x1d, 0x18, 0xa2, 0xd5, 0xad, 0x1f, 0x50,
+			0xf7, 0xa8, 0x9a, 0x72, 0xfb, 0xfd, 0xd9, 0x1c,
+			0x57, 0xac, 0x08, 0x97,
+		},
+	},
+	{
+		.data_len = 4128,
+		.digest = {
+			0xdf, 0x16, 0x76, 0x7f, 0xc0, 0x16, 0x84, 0x63,
+			0xac, 0xcf, 0xd0, 0x78, 0x1e, 0x96, 0x67, 0xc5,
+			0x3c, 0x06, 0xe9, 0xdb, 0x6e, 0x7d, 0xd0, 0x07,
+			0xaa, 0xb1, 0x56, 0xc9,
+		},
+	},
+	{
+		.data_len = 4160,
+		.digest = {
+			0x49, 0xec, 0x5c, 0x18, 0xd7, 0x5b, 0xda, 0xed,
+			0x5b, 0x59, 0xde, 0x09, 0x34, 0xb2, 0x49, 0x43,
+			0x62, 0x6a, 0x0a, 0x63, 0x6a, 0x51, 0x08, 0x37,
+			0x8c, 0xb6, 0x29, 0x84,
+		},
+	},
+	{
+		.data_len = 4224,
+		.digest = {
+			0x3d, 0xc2, 0xc8, 0x43, 0xcf, 0xb7, 0x33, 0x14,
+			0x04, 0x93, 0xed, 0xe2, 0xcd, 0x8a, 0x69, 0x5c,
+			0x5a, 0xd5, 0x9b, 0x52, 0xdf, 0x48, 0xa7, 0xaa,
+			0x28, 0x2b, 0x5d, 0x27,
+		},
+	},
+	{
+		.data_len = 16384,
+		.digest = {
+			0xa7, 0xaf, 0xda, 0x92, 0xe2, 0xe7, 0x61, 0xdc,
+			0xa1, 0x32, 0x53, 0x2a, 0x3f, 0x41, 0x5c, 0x7e,
+			0xc9, 0x89, 0xda, 0x1c, 0xf7, 0x8d, 0x00, 0xbd,
+			0x21, 0x73, 0xb1, 0x69,
+		},
+	},
+};
+
+static const u8 hash_testvec_consolidated[SHA224_DIGEST_SIZE] = {
+	0x9e, 0xb8, 0x82, 0xab, 0x83, 0x37, 0xe4, 0x63,
+	0x84, 0xee, 0x21, 0x15, 0xc2, 0xbb, 0xa3, 0x17,
+	0x8f, 0xc4, 0x99, 0x33, 0xa0, 0x2c, 0x9f, 0xec,
+	0xca, 0xd0, 0xf3, 0x73,
+};
+
+static const u8 hmac_testvec_consolidated[SHA224_DIGEST_SIZE] = {
+	0x66, 0x34, 0x79, 0x92, 0x47, 0x0e, 0xcd, 0x70,
+	0xb0, 0x8b, 0x91, 0xcb, 0x94, 0x2f, 0x67, 0x65,
+	0x2f, 0xc9, 0xd2, 0x91, 0x32, 0xaf, 0xf7, 0x5f,
+	0xb6, 0x01, 0x5b, 0xf2,
+};
diff --git a/lib/crypto/tests/sha224_kunit.c b/lib/crypto/tests/sha224_kunit.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2025 Google LLC
+ */
+#include <crypto/sha2.h>
+#include "sha224-testvecs.h"
+
+#define HASH sha224
+#define HASH_CTX sha224_ctx
+#define HASH_SIZE SHA224_DIGEST_SIZE
+#define HASH_INIT sha224_init
+#define HASH_UPDATE sha224_update
+#define HASH_FINAL sha224_final
+#define HMAC_KEY hmac_sha224_key
+#define HMAC_CTX hmac_sha224_ctx
+#define HMAC_PREPAREKEY hmac_sha224_preparekey
+#define HMAC_INIT hmac_sha224_init
+#define HMAC_UPDATE hmac_sha224_update
+#define HMAC_FINAL hmac_sha224_final
+#define HMAC hmac_sha224
+#define HMAC_USINGRAWKEY hmac_sha224_usingrawkey
+#include "hash-test-template.h"
+
+static struct kunit_case hash_test_cases[] = {
+	HASH_KUNIT_CASES,
+	KUNIT_CASE(benchmark_hash),
+	{},
+};
+
+static struct kunit_suite hash_test_suite = {
+	.name = "sha224",
+	.test_cases = hash_test_cases,
+	.suite_init = hash_suite_init,
+	.suite_exit = hash_suite_exit,
+};
+kunit_test_suite(hash_test_suite);
+
+MODULE_DESCRIPTION("KUnit tests and benchmark for SHA-224 and HMAC-SHA224");
+MODULE_LICENSE("GPL");
diff --git a/lib/crypto/tests/sha256-testvecs.h b/lib/crypto/tests/sha256-testvecs.h
diff --git a/lib/crypto/tests/sha256_kunit.c b/lib/crypto/tests/sha256_kunit.c

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+# SPDX-License-Identifier: GPL-2.0-or-later`
	`2`	`+`
	`3`	`+obj-$(CONFIG_CRYPTO_LIB_SHA256_KUNIT_TEST) += sha224_kunit.o sha256_kunit.o`