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Eric Biggers
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lib/crypto: tests: Add KUnit tests for SM3
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. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20260321040935.410034-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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‎lib/crypto/.kunitconfig‎

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Original file line numberDiff line numberDiff line change
@@ -16,3 +16,4 @@ CONFIG_CRYPTO_LIB_SHA1_KUNIT_TEST=y
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CONFIG_CRYPTO_LIB_SHA256_KUNIT_TEST=y
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CONFIG_CRYPTO_LIB_SHA512_KUNIT_TEST=y
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CONFIG_CRYPTO_LIB_SHA3_KUNIT_TEST=y
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CONFIG_CRYPTO_LIB_SM3_KUNIT_TEST=y

‎lib/crypto/tests/Kconfig‎

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@@ -124,6 +124,14 @@ config CRYPTO_LIB_SHA3_KUNIT_TEST
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including SHA3-224, SHA3-256, SHA3-384, SHA3-512, SHAKE128 and
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SHAKE256.
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config CRYPTO_LIB_SM3_KUNIT_TEST
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tristate "KUnit tests for SM3" if !KUNIT_ALL_TESTS
129+
depends on KUNIT && CRYPTO_LIB_SM3
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default KUNIT_ALL_TESTS
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select CRYPTO_LIB_BENCHMARK_VISIBLE
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help
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KUnit tests for the SM3 cryptographic hash function.
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127135
config CRYPTO_LIB_ENABLE_ALL_FOR_KUNIT
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tristate "Enable all crypto library code for KUnit tests"
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depends on KUNIT
@@ -139,6 +147,7 @@ config CRYPTO_LIB_ENABLE_ALL_FOR_KUNIT
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select CRYPTO_LIB_SHA256
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select CRYPTO_LIB_SHA512
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select CRYPTO_LIB_SHA3
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select CRYPTO_LIB_SM3
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help
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Enable all the crypto library code that has KUnit tests.
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‎lib/crypto/tests/Makefile‎

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@@ -14,3 +14,4 @@ obj-$(CONFIG_CRYPTO_LIB_SHA1_KUNIT_TEST) += sha1_kunit.o
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obj-$(CONFIG_CRYPTO_LIB_SHA256_KUNIT_TEST) += sha224_kunit.o sha256_kunit.o
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obj-$(CONFIG_CRYPTO_LIB_SHA512_KUNIT_TEST) += sha384_kunit.o sha512_kunit.o
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obj-$(CONFIG_CRYPTO_LIB_SHA3_KUNIT_TEST) += sha3_kunit.o
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obj-$(CONFIG_CRYPTO_LIB_SM3_KUNIT_TEST) += sm3_kunit.o

‎lib/crypto/tests/sm3-testvecs.h‎

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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* This file was generated by: ./scripts/crypto/gen-hash-testvecs.py sm3 */
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static const struct {
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size_t data_len;
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u8 digest[SM3_DIGEST_SIZE];
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} hash_testvecs[] = {
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{
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.data_len = 0,
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.digest = {
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0x1a, 0xb2, 0x1d, 0x83, 0x55, 0xcf, 0xa1, 0x7f,
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0x8e, 0x61, 0x19, 0x48, 0x31, 0xe8, 0x1a, 0x8f,
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0x22, 0xbe, 0xc8, 0xc7, 0x28, 0xfe, 0xfb, 0x74,
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0x7e, 0xd0, 0x35, 0xeb, 0x50, 0x82, 0xaa, 0x2b,
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},
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},
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{
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.data_len = 1,
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.digest = {
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0xb6, 0x22, 0x2c, 0x39, 0xdc, 0x14, 0x9a, 0xee,
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0x01, 0x9a, 0xcb, 0x0d, 0xe6, 0xc6, 0x75, 0x6e,
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0x8f, 0x18, 0x7b, 0x0e, 0xe8, 0x98, 0x61, 0x71,
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0x2b, 0xd8, 0x38, 0xa9, 0xee, 0x2c, 0x1e, 0x93,
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},
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},
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{
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.data_len = 2,
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.digest = {
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0x62, 0x0c, 0x66, 0x77, 0x67, 0x28, 0x74, 0x8a,
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0xe3, 0x64, 0xea, 0x44, 0x6a, 0x3f, 0x34, 0x61,
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0x55, 0xc5, 0xaa, 0xb2, 0x6c, 0x67, 0x97, 0x68,
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0x68, 0xae, 0x4d, 0x64, 0xa8, 0xb6, 0x72, 0x3e,
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},
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},
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{
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.data_len = 3,
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.digest = {
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0x71, 0xd4, 0x63, 0xb1, 0xfa, 0x27, 0xc7, 0xae,
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0x65, 0xed, 0x5c, 0x93, 0x70, 0xe0, 0x09, 0x34,
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0x2f, 0x42, 0xe6, 0x71, 0x16, 0x8e, 0x90, 0x90,
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0x9a, 0xdd, 0xa6, 0x44, 0x66, 0x71, 0x18, 0xf9,
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},
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},
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{
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.data_len = 16,
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.digest = {
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0x79, 0x0b, 0x68, 0xb5, 0x41, 0xc1, 0x97, 0xa0,
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0x50, 0xe6, 0x93, 0x70, 0xf6, 0x98, 0x49, 0xea,
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0x92, 0xc9, 0xd0, 0xb1, 0x46, 0xbd, 0x4a, 0x0c,
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0x8e, 0xe8, 0xf3, 0xe4, 0x8f, 0x90, 0x33, 0x3c,
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},
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},
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{
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.data_len = 32,
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.digest = {
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0x32, 0x9f, 0xa3, 0x18, 0x18, 0x45, 0xe0, 0x28,
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0xd3, 0xa4, 0x41, 0x3a, 0x25, 0x62, 0x9c, 0x95,
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0xab, 0xfe, 0x02, 0xe0, 0x37, 0x7d, 0x3c, 0xc4,
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0xce, 0x69, 0x57, 0x5a, 0x07, 0x0e, 0xb9, 0xf5,
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},
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},
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{
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.data_len = 48,
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.digest = {
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0x0c, 0xcf, 0x7c, 0x48, 0x44, 0xa0, 0xb0, 0x8d,
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0xdf, 0xbe, 0x22, 0x14, 0x7e, 0xd4, 0xc3, 0x8d,
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0x6a, 0x23, 0xfc, 0x44, 0x0e, 0x0f, 0xde, 0xa5,
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0x7c, 0x8b, 0xc4, 0x8b, 0xab, 0x8c, 0x87, 0x41,
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},
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},
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{
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.data_len = 49,
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.digest = {
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0xb3, 0x76, 0x8b, 0x19, 0xf9, 0x10, 0xa9, 0x56,
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0x4f, 0xce, 0x27, 0xaa, 0x65, 0x96, 0xe5, 0xdb,
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0x90, 0x9b, 0x92, 0xcd, 0x32, 0x0d, 0x16, 0xac,
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0xf8, 0xd0, 0x66, 0x62, 0x10, 0xf0, 0x44, 0xdf,
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},
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},
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{
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.data_len = 63,
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.digest = {
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0x07, 0xc9, 0x45, 0x65, 0x9f, 0x68, 0x75, 0xc3,
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0x74, 0xb2, 0x3b, 0x0c, 0x97, 0x05, 0xd3, 0x13,
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0xc0, 0xb6, 0x21, 0xed, 0xf6, 0x10, 0x7a, 0xed,
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0xec, 0xd8, 0x10, 0x29, 0xbf, 0x7a, 0x78, 0x37,
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},
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},
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{
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.data_len = 64,
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.digest = {
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0x3e, 0x69, 0x18, 0x45, 0xd8, 0x25, 0x6f, 0x44,
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0xc0, 0x02, 0xe5, 0xcf, 0xcd, 0x94, 0x42, 0xa9,
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0xd5, 0x12, 0x62, 0x10, 0x15, 0xa0, 0xf9, 0x16,
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0x19, 0x2d, 0x8d, 0x63, 0x31, 0xf2, 0x2f, 0x36,
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},
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},
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{
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.data_len = 65,
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.digest = {
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0x6b, 0x3e, 0xc0, 0x20, 0xb7, 0x74, 0x30, 0xa0,
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0xc6, 0x5c, 0xee, 0xbe, 0xdc, 0xe6, 0xe5, 0x4f,
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0x3c, 0x61, 0x8d, 0x91, 0xac, 0x31, 0x4b, 0x2a,
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0xdf, 0x1c, 0xef, 0x24, 0xdc, 0x0a, 0x10, 0xe8,
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},
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},
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{
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.data_len = 127,
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.digest = {
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0xab, 0xd6, 0xa1, 0xbf, 0x39, 0x43, 0x75, 0xda,
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0xbf, 0xc7, 0x22, 0xcc, 0x4e, 0xfc, 0xe4, 0x42,
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0x6d, 0x1b, 0x87, 0x25, 0x64, 0x7f, 0x88, 0xf7,
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0xc3, 0x0a, 0x0a, 0x4c, 0xd6, 0xa7, 0x68, 0xae,
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},
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},
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{
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.data_len = 128,
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.digest = {
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0x1b, 0x70, 0xd4, 0x5f, 0x6c, 0xe4, 0x2d, 0x58,
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0x2d, 0x0f, 0x9a, 0x12, 0x34, 0xbb, 0x5e, 0x38,
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0xd8, 0x1f, 0x6a, 0x46, 0x8a, 0xef, 0xdb, 0x68,
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0x18, 0x62, 0xbb, 0x85, 0xfc, 0xc4, 0x6e, 0x2e,
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},
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},
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{
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.data_len = 129,
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.digest = {
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0x33, 0x62, 0xba, 0xa7, 0x4a, 0xbc, 0xd7, 0x7b,
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0xd4, 0x67, 0x6d, 0x3e, 0xea, 0xe8, 0xb0, 0x64,
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0x0d, 0xf3, 0xae, 0x1d, 0x52, 0x24, 0x11, 0x9f,
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0xda, 0xa9, 0x7f, 0xd5, 0x22, 0x1a, 0xde, 0x8a,
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},
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},
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{
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.data_len = 256,
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.digest = {
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0x70, 0xa8, 0xa6, 0x2b, 0xfb, 0x1f, 0x3b, 0x5a,
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0xcc, 0x71, 0x76, 0x9e, 0x25, 0x4c, 0xfa, 0x8f,
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0x39, 0x4a, 0x21, 0x8a, 0x9d, 0x74, 0x8d, 0x2c,
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0x31, 0xa5, 0xb5, 0xff, 0x30, 0xc1, 0x14, 0xc4,
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},
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},
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{
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.data_len = 511,
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.digest = {
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0x39, 0xd0, 0x8c, 0x5f, 0xfc, 0x36, 0xc2, 0x7c,
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0xdb, 0x8b, 0x2e, 0xdc, 0x9d, 0x1b, 0xd1, 0xba,
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0x9b, 0x52, 0x6b, 0x35, 0x46, 0x46, 0x75, 0x73,
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0xe5, 0x62, 0x96, 0x6e, 0xf3, 0xba, 0xd9, 0x19,
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},
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},
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{
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.data_len = 513,
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.digest = {
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0x76, 0xa0, 0x3d, 0xa2, 0x5f, 0xd4, 0xa6, 0xbe,
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0x6b, 0xdb, 0xed, 0x14, 0x9e, 0xa8, 0x15, 0x77,
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0xa9, 0x38, 0x30, 0x6b, 0x68, 0xfa, 0xb6, 0xe2,
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0x93, 0x19, 0x24, 0x72, 0x67, 0x20, 0x72, 0xc3,
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},
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},
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{
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.data_len = 1000,
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.digest = {
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0x16, 0xbc, 0x33, 0x77, 0x0b, 0xcf, 0x93, 0x5e,
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0xec, 0x7d, 0x8d, 0x3c, 0xae, 0xd9, 0x75, 0xdf,
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0x46, 0x24, 0x17, 0x7e, 0x03, 0x88, 0xf2, 0x75,
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0xa9, 0x18, 0xa6, 0x1c, 0x7a, 0x74, 0x0d, 0xf3,
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},
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},
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{
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.data_len = 3333,
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.digest = {
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0xdb, 0x54, 0x89, 0xe7, 0x1c, 0x50, 0xf2, 0xbf,
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0xde, 0x3a, 0xbf, 0x5b, 0xee, 0x5a, 0x46, 0x62,
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0x20, 0xb1, 0x80, 0x48, 0xac, 0x56, 0x33, 0xb3,
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0xbb, 0x3f, 0xfa, 0x02, 0xc6, 0x43, 0xb5, 0x8c,
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},
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},
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{
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.data_len = 4096,
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.digest = {
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0xdf, 0x0d, 0xed, 0x3b, 0x8f, 0xea, 0x81, 0xfd,
183+
0xd6, 0x34, 0xae, 0x74, 0x24, 0x3a, 0x15, 0x38,
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0xe7, 0xcf, 0x45, 0x7e, 0x8f, 0xf5, 0x50, 0x6c,
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0xaa, 0x27, 0x23, 0x92, 0x6d, 0xab, 0x3b, 0xde,
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},
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},
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{
189+
.data_len = 4128,
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.digest = {
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0x6a, 0xbd, 0x56, 0x5a, 0xf1, 0xc6, 0x40, 0x4d,
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0xf3, 0x50, 0x77, 0x87, 0x86, 0x63, 0x1b, 0x4d,
193+
0x21, 0x99, 0x96, 0xad, 0x24, 0x62, 0xce, 0xc0,
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0x3e, 0xb7, 0x35, 0x52, 0x56, 0x0e, 0x55, 0x85,
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},
196+
},
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{
198+
.data_len = 4160,
199+
.digest = {
200+
0x5b, 0xc1, 0x1f, 0x25, 0x43, 0xa3, 0x1c, 0xa0,
201+
0x8c, 0xfc, 0x41, 0xf1, 0xcc, 0xb3, 0x95, 0x95,
202+
0xe0, 0xb9, 0xd3, 0x29, 0xf4, 0x08, 0x31, 0x47,
203+
0x6d, 0x09, 0xa8, 0x2e, 0xa5, 0xf4, 0xf1, 0x8d,
204+
},
205+
},
206+
{
207+
.data_len = 4224,
208+
.digest = {
209+
0xec, 0x56, 0x1e, 0xa6, 0x1f, 0xb2, 0x87, 0xb2,
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0x7e, 0x15, 0xd6, 0x30, 0x08, 0x74, 0xb0, 0x48,
211+
0x90, 0x2a, 0xbe, 0x2f, 0x80, 0x3a, 0x88, 0xcc,
212+
0xd7, 0xc5, 0x87, 0x8c, 0x04, 0xef, 0x78, 0x71,
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},
214+
},
215+
{
216+
.data_len = 16384,
217+
.digest = {
218+
0xe7, 0xb8, 0x84, 0x20, 0xff, 0xd5, 0x53, 0xe6,
219+
0x14, 0x31, 0x12, 0x75, 0xb7, 0x9a, 0x4f, 0x63,
220+
0x63, 0x00, 0xfe, 0x2c, 0x54, 0xee, 0x06, 0xfc,
221+
0x12, 0x16, 0xe5, 0xdc, 0xa4, 0x40, 0x62, 0x12,
222+
},
223+
},
224+
};
225+
226+
static const u8 hash_testvec_consolidated[SM3_DIGEST_SIZE] = {
227+
0xe6, 0x58, 0xd4, 0x8e, 0x74, 0x92, 0xdf, 0xfe,
228+
0x58, 0x05, 0xe5, 0x29, 0x83, 0xfb, 0xb7, 0x51,
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0x7e, 0x66, 0x0c, 0x49, 0x3e, 0x11, 0x7e, 0x9b,
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0xb1, 0x83, 0x3a, 0xa6, 0xb0, 0x3c, 0xf5, 0xe0,
231+
};

‎lib/crypto/tests/sm3_kunit.c‎

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@@ -0,0 +1,31 @@
1+
// SPDX-License-Identifier: GPL-2.0-or-later
2+
/*
3+
* Copyright 2026 Google LLC
4+
*/
5+
#include <crypto/sm3.h>
6+
#include "sm3-testvecs.h"
7+
8+
#define HASH sm3
9+
#define HASH_CTX sm3_ctx
10+
#define HASH_SIZE SM3_DIGEST_SIZE
11+
#define HASH_INIT sm3_init
12+
#define HASH_UPDATE sm3_update
13+
#define HASH_FINAL sm3_final
14+
#include "hash-test-template.h"
15+
16+
static struct kunit_case sm3_test_cases[] = {
17+
HASH_KUNIT_CASES,
18+
KUNIT_CASE(benchmark_hash),
19+
{},
20+
};
21+
22+
static struct kunit_suite sm3_test_suite = {
23+
.name = "sm3",
24+
.test_cases = sm3_test_cases,
25+
.suite_init = hash_suite_init,
26+
.suite_exit = hash_suite_exit,
27+
};
28+
kunit_test_suite(sm3_test_suite);
29+
30+
MODULE_DESCRIPTION("KUnit tests and benchmark for SM3");
31+
MODULE_LICENSE("GPL");

‎scripts/crypto/gen-hash-testvecs.py‎

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@@ -356,6 +356,9 @@ def gen_additional_polyval_testvecs():
356356
print()
357357
print('/* SHAKE test vectors */')
358358
gen_additional_sha3_testvecs()
359+
elif alg == 'sm3':
360+
gen_unkeyed_testvecs(alg)
361+
# Kernel doesn't implement HMAC-SM3 library functions yet.
359362
else:
360363
gen_unkeyed_testvecs(alg)
361364
gen_hmac_testvecs(alg)

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