Subject: [PATCH 05/12] lib/crypto: tests: Add KUnit tests for SM3

From: Eric Biggers <[email-masked]>
Date: Fri, 20 Mar 2026 21:09:28 -0700

Add a KUnit test suite for the SM3 library.  It closely mirrors the test
suites for the other cryptographic hash functions.  The actual test and
benchmark logic is already in hash-test-template.h; this just wires it
up for SM3 in the usual way.

Signed-off-by: Eric Biggers <[email-masked]>
---
 lib/crypto/.kunitconfig             |   1 +
 lib/crypto/tests/Kconfig            |   9 ++
 lib/crypto/tests/Makefile           |   1 +
 lib/crypto/tests/sm3-testvecs.h     | 231 ++++++++++++++++++++++++++++
 lib/crypto/tests/sm3_kunit.c        |  31 ++++
 scripts/crypto/gen-hash-testvecs.py |   3 +
 6 files changed, 276 insertions(+)
 create mode 100644 lib/crypto/tests/sm3-testvecs.h
 create mode 100644 lib/crypto/tests/sm3_kunit.c

diff --git a/lib/crypto/.kunitconfig b/lib/crypto/.kunitconfig
index 63a592731d1d..61f880859526 100644
--- a/lib/crypto/.kunitconfig
+++ b/lib/crypto/.kunitconfig
@@ -13,5 +13,6 @@ CONFIG_CRYPTO_LIB_POLY1305_KUNIT_TEST=y
 CONFIG_CRYPTO_LIB_POLYVAL_KUNIT_TEST=y
 CONFIG_CRYPTO_LIB_SHA1_KUNIT_TEST=y
 CONFIG_CRYPTO_LIB_SHA256_KUNIT_TEST=y
 CONFIG_CRYPTO_LIB_SHA512_KUNIT_TEST=y
 CONFIG_CRYPTO_LIB_SHA3_KUNIT_TEST=y
+CONFIG_CRYPTO_LIB_SM3_KUNIT_TEST=y
diff --git a/lib/crypto/tests/Kconfig b/lib/crypto/tests/Kconfig
index 42e1770e1883..72d445a7eac5 100644
--- a/lib/crypto/tests/Kconfig
+++ b/lib/crypto/tests/Kconfig
@@ -114,10 +114,18 @@ config CRYPTO_LIB_SHA3_KUNIT_TEST
 	help
 	  KUnit tests for the SHA3 cryptographic hash and XOF functions,
 	  including SHA3-224, SHA3-256, SHA3-384, SHA3-512, SHAKE128 and
 	  SHAKE256.
 
+config CRYPTO_LIB_SM3_KUNIT_TEST
+	tristate "KUnit tests for SM3" if !KUNIT_ALL_TESTS
+	depends on KUNIT && CRYPTO_LIB_SM3
+	default KUNIT_ALL_TESTS
+	select CRYPTO_LIB_BENCHMARK_VISIBLE
+	help
+	  KUnit tests for the SM3 cryptographic hash function.
+
 config CRYPTO_LIB_ENABLE_ALL_FOR_KUNIT
 	tristate "Enable all crypto library code for KUnit tests"
 	depends on KUNIT
 	select CRYPTO_LIB_AES_CBC_MACS
 	select CRYPTO_LIB_BLAKE2B
@@ -129,10 +137,11 @@ config CRYPTO_LIB_ENABLE_ALL_FOR_KUNIT
 	select CRYPTO_LIB_POLYVAL
 	select CRYPTO_LIB_SHA1
 	select CRYPTO_LIB_SHA256
 	select CRYPTO_LIB_SHA512
 	select CRYPTO_LIB_SHA3
+	select CRYPTO_LIB_SM3
 	help
 	  Enable all the crypto library code that has KUnit tests.
 
 	  Enable this only if you'd like to test all the crypto library code,
 	  even code that wouldn't otherwise need to be built.
diff --git a/lib/crypto/tests/Makefile b/lib/crypto/tests/Makefile
index f864e0ffbee4..88920fbc4324 100644
--- a/lib/crypto/tests/Makefile
+++ b/lib/crypto/tests/Makefile
@@ -11,5 +11,6 @@ obj-$(CONFIG_CRYPTO_LIB_POLY1305_KUNIT_TEST) += poly1305_kunit.o
 obj-$(CONFIG_CRYPTO_LIB_POLYVAL_KUNIT_TEST) += polyval_kunit.o
 obj-$(CONFIG_CRYPTO_LIB_SHA1_KUNIT_TEST) += sha1_kunit.o
 obj-$(CONFIG_CRYPTO_LIB_SHA256_KUNIT_TEST) += sha224_kunit.o sha256_kunit.o
 obj-$(CONFIG_CRYPTO_LIB_SHA512_KUNIT_TEST) += sha384_kunit.o sha512_kunit.o
 obj-$(CONFIG_CRYPTO_LIB_SHA3_KUNIT_TEST) += sha3_kunit.o
+obj-$(CONFIG_CRYPTO_LIB_SM3_KUNIT_TEST) += sm3_kunit.o
diff --git a/lib/crypto/tests/sm3-testvecs.h b/lib/crypto/tests/sm3-testvecs.h
new file mode 100644
index 000000000000..5e788c29f487
--- /dev/null
+++ b/lib/crypto/tests/sm3-testvecs.h
@@ -0,0 +1,231 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* This file was generated by: ./scripts/crypto/gen-hash-testvecs.py sm3 */
+
+static const struct {
+	size_t data_len;
+	u8 digest[SM3_DIGEST_SIZE];
+} hash_testvecs[] = {
+	{
+		.data_len = 0,
+		.digest = {
+			0x1a, 0xb2, 0x1d, 0x83, 0x55, 0xcf, 0xa1, 0x7f,
+			0x8e, 0x61, 0x19, 0x48, 0x31, 0xe8, 0x1a, 0x8f,
+			0x22, 0xbe, 0xc8, 0xc7, 0x28, 0xfe, 0xfb, 0x74,
+			0x7e, 0xd0, 0x35, 0xeb, 0x50, 0x82, 0xaa, 0x2b,
+		},
+	},
+	{
+		.data_len = 1,
+		.digest = {
+			0xb6, 0x22, 0x2c, 0x39, 0xdc, 0x14, 0x9a, 0xee,
+			0x01, 0x9a, 0xcb, 0x0d, 0xe6, 0xc6, 0x75, 0x6e,
+			0x8f, 0x18, 0x7b, 0x0e, 0xe8, 0x98, 0x61, 0x71,
+			0x2b, 0xd8, 0x38, 0xa9, 0xee, 0x2c, 0x1e, 0x93,
+		},
+	},
+	{
+		.data_len = 2,
+		.digest = {
+			0x62, 0x0c, 0x66, 0x77, 0x67, 0x28, 0x74, 0x8a,
+			0xe3, 0x64, 0xea, 0x44, 0x6a, 0x3f, 0x34, 0x61,
+			0x55, 0xc5, 0xaa, 0xb2, 0x6c, 0x67, 0x97, 0x68,
+			0x68, 0xae, 0x4d, 0x64, 0xa8, 0xb6, 0x72, 0x3e,
+		},
+	},
+	{
+		.data_len = 3,
+		.digest = {
+			0x71, 0xd4, 0x63, 0xb1, 0xfa, 0x27, 0xc7, 0xae,
+			0x65, 0xed, 0x5c, 0x93, 0x70, 0xe0, 0x09, 0x34,
+			0x2f, 0x42, 0xe6, 0x71, 0x16, 0x8e, 0x90, 0x90,
+			0x9a, 0xdd, 0xa6, 0x44, 0x66, 0x71, 0x18, 0xf9,
+		},
+	},
+	{
+		.data_len = 16,
+		.digest = {
+			0x79, 0x0b, 0x68, 0xb5, 0x41, 0xc1, 0x97, 0xa0,
+			0x50, 0xe6, 0x93, 0x70, 0xf6, 0x98, 0x49, 0xea,
+			0x92, 0xc9, 0xd0, 0xb1, 0x46, 0xbd, 0x4a, 0x0c,
+			0x8e, 0xe8, 0xf3, 0xe4, 0x8f, 0x90, 0x33, 0x3c,
+		},
+	},
+	{
+		.data_len = 32,
+		.digest = {
+			0x32, 0x9f, 0xa3, 0x18, 0x18, 0x45, 0xe0, 0x28,
+			0xd3, 0xa4, 0x41, 0x3a, 0x25, 0x62, 0x9c, 0x95,
+			0xab, 0xfe, 0x02, 0xe0, 0x37, 0x7d, 0x3c, 0xc4,
+			0xce, 0x69, 0x57, 0x5a, 0x07, 0x0e, 0xb9, 0xf5,
+		},
+	},
+	{
+		.data_len = 48,
+		.digest = {
+			0x0c, 0xcf, 0x7c, 0x48, 0x44, 0xa0, 0xb0, 0x8d,
+			0xdf, 0xbe, 0x22, 0x14, 0x7e, 0xd4, 0xc3, 0x8d,
+			0x6a, 0x23, 0xfc, 0x44, 0x0e, 0x0f, 0xde, 0xa5,
+			0x7c, 0x8b, 0xc4, 0x8b, 0xab, 0x8c, 0x87, 0x41,
+		},
+	},
+	{
+		.data_len = 49,
+		.digest = {
+			0xb3, 0x76, 0x8b, 0x19, 0xf9, 0x10, 0xa9, 0x56,
+			0x4f, 0xce, 0x27, 0xaa, 0x65, 0x96, 0xe5, 0xdb,
+			0x90, 0x9b, 0x92, 0xcd, 0x32, 0x0d, 0x16, 0xac,
+			0xf8, 0xd0, 0x66, 0x62, 0x10, 0xf0, 0x44, 0xdf,
+		},
+	},
+	{
+		.data_len = 63,
+		.digest = {
+			0x07, 0xc9, 0x45, 0x65, 0x9f, 0x68, 0x75, 0xc3,
+			0x74, 0xb2, 0x3b, 0x0c, 0x97, 0x05, 0xd3, 0x13,
+			0xc0, 0xb6, 0x21, 0xed, 0xf6, 0x10, 0x7a, 0xed,
+			0xec, 0xd8, 0x10, 0x29, 0xbf, 0x7a, 0x78, 0x37,
+		},
+	},
+	{
+		.data_len = 64,
+		.digest = {
+			0x3e, 0x69, 0x18, 0x45, 0xd8, 0x25, 0x6f, 0x44,
+			0xc0, 0x02, 0xe5, 0xcf, 0xcd, 0x94, 0x42, 0xa9,
+			0xd5, 0x12, 0x62, 0x10, 0x15, 0xa0, 0xf9, 0x16,
+			0x19, 0x2d, 0x8d, 0x63, 0x31, 0xf2, 0x2f, 0x36,
+		},
+	},
+	{
+		.data_len = 65,
+		.digest = {
+			0x6b, 0x3e, 0xc0, 0x20, 0xb7, 0x74, 0x30, 0xa0,
+			0xc6, 0x5c, 0xee, 0xbe, 0xdc, 0xe6, 0xe5, 0x4f,
+			0x3c, 0x61, 0x8d, 0x91, 0xac, 0x31, 0x4b, 0x2a,
+			0xdf, 0x1c, 0xef, 0x24, 0xdc, 0x0a, 0x10, 0xe8,
+		},
+	},
+	{
+		.data_len = 127,
+		.digest = {
+			0xab, 0xd6, 0xa1, 0xbf, 0x39, 0x43, 0x75, 0xda,
+			0xbf, 0xc7, 0x22, 0xcc, 0x4e, 0xfc, 0xe4, 0x42,
+			0x6d, 0x1b, 0x87, 0x25, 0x64, 0x7f, 0x88, 0xf7,
+			0xc3, 0x0a, 0x0a, 0x4c, 0xd6, 0xa7, 0x68, 0xae,
+		},
+	},
+	{
+		.data_len = 128,
+		.digest = {
+			0x1b, 0x70, 0xd4, 0x5f, 0x6c, 0xe4, 0x2d, 0x58,
+			0x2d, 0x0f, 0x9a, 0x12, 0x34, 0xbb, 0x5e, 0x38,
+			0xd8, 0x1f, 0x6a, 0x46, 0x8a, 0xef, 0xdb, 0x68,
+			0x18, 0x62, 0xbb, 0x85, 0xfc, 0xc4, 0x6e, 0x2e,
+		},
+	},
+	{
+		.data_len = 129,
+		.digest = {
+			0x33, 0x62, 0xba, 0xa7, 0x4a, 0xbc, 0xd7, 0x7b,
+			0xd4, 0x67, 0x6d, 0x3e, 0xea, 0xe8, 0xb0, 0x64,
+			0x0d, 0xf3, 0xae, 0x1d, 0x52, 0x24, 0x11, 0x9f,
+			0xda, 0xa9, 0x7f, 0xd5, 0x22, 0x1a, 0xde, 0x8a,
+		},
+	},
+	{
+		.data_len = 256,
+		.digest = {
+			0x70, 0xa8, 0xa6, 0x2b, 0xfb, 0x1f, 0x3b, 0x5a,
+			0xcc, 0x71, 0x76, 0x9e, 0x25, 0x4c, 0xfa, 0x8f,
+			0x39, 0x4a, 0x21, 0x8a, 0x9d, 0x74, 0x8d, 0x2c,
+			0x31, 0xa5, 0xb5, 0xff, 0x30, 0xc1, 0x14, 0xc4,
+		},
+	},
+	{
+		.data_len = 511,
+		.digest = {
+			0x39, 0xd0, 0x8c, 0x5f, 0xfc, 0x36, 0xc2, 0x7c,
+			0xdb, 0x8b, 0x2e, 0xdc, 0x9d, 0x1b, 0xd1, 0xba,
+			0x9b, 0x52, 0x6b, 0x35, 0x46, 0x46, 0x75, 0x73,
+			0xe5, 0x62, 0x96, 0x6e, 0xf3, 0xba, 0xd9, 0x19,
+		},
+	},
+	{
+		.data_len = 513,
+		.digest = {
+			0x76, 0xa0, 0x3d, 0xa2, 0x5f, 0xd4, 0xa6, 0xbe,
+			0x6b, 0xdb, 0xed, 0x14, 0x9e, 0xa8, 0x15, 0x77,
+			0xa9, 0x38, 0x30, 0x6b, 0x68, 0xfa, 0xb6, 0xe2,
+			0x93, 0x19, 0x24, 0x72, 0x67, 0x20, 0x72, 0xc3,
+		},
+	},
+	{
+		.data_len = 1000,
+		.digest = {
+			0x16, 0xbc, 0x33, 0x77, 0x0b, 0xcf, 0x93, 0x5e,
+			0xec, 0x7d, 0x8d, 0x3c, 0xae, 0xd9, 0x75, 0xdf,
+			0x46, 0x24, 0x17, 0x7e, 0x03, 0x88, 0xf2, 0x75,
+			0xa9, 0x18, 0xa6, 0x1c, 0x7a, 0x74, 0x0d, 0xf3,
+		},
+	},
+	{
+		.data_len = 3333,
+		.digest = {
+			0xdb, 0x54, 0x89, 0xe7, 0x1c, 0x50, 0xf2, 0xbf,
+			0xde, 0x3a, 0xbf, 0x5b, 0xee, 0x5a, 0x46, 0x62,
+			0x20, 0xb1, 0x80, 0x48, 0xac, 0x56, 0x33, 0xb3,
+			0xbb, 0x3f, 0xfa, 0x02, 0xc6, 0x43, 0xb5, 0x8c,
+		},
+	},
+	{
+		.data_len = 4096,
+		.digest = {
+			0xdf, 0x0d, 0xed, 0x3b, 0x8f, 0xea, 0x81, 0xfd,
+			0xd6, 0x34, 0xae, 0x74, 0x24, 0x3a, 0x15, 0x38,
+			0xe7, 0xcf, 0x45, 0x7e, 0x8f, 0xf5, 0x50, 0x6c,
+			0xaa, 0x27, 0x23, 0x92, 0x6d, 0xab, 0x3b, 0xde,
+		},
+	},
+	{
+		.data_len = 4128,
+		.digest = {
+			0x6a, 0xbd, 0x56, 0x5a, 0xf1, 0xc6, 0x40, 0x4d,
+			0xf3, 0x50, 0x77, 0x87, 0x86, 0x63, 0x1b, 0x4d,
+			0x21, 0x99, 0x96, 0xad, 0x24, 0x62, 0xce, 0xc0,
+			0x3e, 0xb7, 0x35, 0x52, 0x56, 0x0e, 0x55, 0x85,
+		},
+	},
+	{
+		.data_len = 4160,
+		.digest = {
+			0x5b, 0xc1, 0x1f, 0x25, 0x43, 0xa3, 0x1c, 0xa0,
+			0x8c, 0xfc, 0x41, 0xf1, 0xcc, 0xb3, 0x95, 0x95,
+			0xe0, 0xb9, 0xd3, 0x29, 0xf4, 0x08, 0x31, 0x47,
+			0x6d, 0x09, 0xa8, 0x2e, 0xa5, 0xf4, 0xf1, 0x8d,
+		},
+	},
+	{
+		.data_len = 4224,
+		.digest = {
+			0xec, 0x56, 0x1e, 0xa6, 0x1f, 0xb2, 0x87, 0xb2,
+			0x7e, 0x15, 0xd6, 0x30, 0x08, 0x74, 0xb0, 0x48,
+			0x90, 0x2a, 0xbe, 0x2f, 0x80, 0x3a, 0x88, 0xcc,
+			0xd7, 0xc5, 0x87, 0x8c, 0x04, 0xef, 0x78, 0x71,
+		},
+	},
+	{
+		.data_len = 16384,
+		.digest = {
+			0xe7, 0xb8, 0x84, 0x20, 0xff, 0xd5, 0x53, 0xe6,
+			0x14, 0x31, 0x12, 0x75, 0xb7, 0x9a, 0x4f, 0x63,
+			0x63, 0x00, 0xfe, 0x2c, 0x54, 0xee, 0x06, 0xfc,
+			0x12, 0x16, 0xe5, 0xdc, 0xa4, 0x40, 0x62, 0x12,
+		},
+	},
+};
+
+static const u8 hash_testvec_consolidated[SM3_DIGEST_SIZE] = {
+	0xe6, 0x58, 0xd4, 0x8e, 0x74, 0x92, 0xdf, 0xfe,
+	0x58, 0x05, 0xe5, 0x29, 0x83, 0xfb, 0xb7, 0x51,
+	0x7e, 0x66, 0x0c, 0x49, 0x3e, 0x11, 0x7e, 0x9b,
+	0xb1, 0x83, 0x3a, 0xa6, 0xb0, 0x3c, 0xf5, 0xe0,
+};
diff --git a/lib/crypto/tests/sm3_kunit.c b/lib/crypto/tests/sm3_kunit.c
new file mode 100644
index 000000000000..dc8136acdff6
--- /dev/null
+++ b/lib/crypto/tests/sm3_kunit.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2026 Google LLC
+ */
+#include <crypto/sm3.h>
+#include "sm3-testvecs.h"
+
+#define HASH sm3
+#define HASH_CTX sm3_ctx
+#define HASH_SIZE SM3_DIGEST_SIZE
+#define HASH_INIT sm3_init
+#define HASH_UPDATE sm3_update
+#define HASH_FINAL sm3_final
+#include "hash-test-template.h"
+
+static struct kunit_case sm3_test_cases[] = {
+	HASH_KUNIT_CASES,
+	KUNIT_CASE(benchmark_hash),
+	{},
+};
+
+static struct kunit_suite sm3_test_suite = {
+	.name = "sm3",
+	.test_cases = sm3_test_cases,
+	.suite_init = hash_suite_init,
+	.suite_exit = hash_suite_exit,
+};
+kunit_test_suite(sm3_test_suite);
+
+MODULE_DESCRIPTION("KUnit tests and benchmark for SM3");
+MODULE_LICENSE("GPL");
diff --git a/scripts/crypto/gen-hash-testvecs.py b/scripts/crypto/gen-hash-testvecs.py
index 34b7c48f3456..37fdbc52b2c1 100755
--- a/scripts/crypto/gen-hash-testvecs.py
+++ b/scripts/crypto/gen-hash-testvecs.py
@@ -293,8 +293,11 @@ elif alg == 'sha3':
     print('/* SHA3-256 test vectors */')
     gen_unkeyed_testvecs('sha3-256')
     print()
     print('/* SHAKE test vectors */')
     gen_additional_sha3_testvecs()
+elif alg == 'sm3':
+    gen_unkeyed_testvecs(alg)
+    # Kernel doesn't implement HMAC-SM3 library functions yet.
 else:
     gen_unkeyed_testvecs(alg)
     gen_hmac_testvecs(alg)
-- 
2.53.0