[PATCH 02/12] lib/crypto: tests: Add KUnit tests for NH

[Eric Biggers <ebiggers@kernel.org>]

Add some simple KUnit tests for the nh() function.

These replace the test coverage which will be lost by removing the
nhpoly1305 crypto_shash.

Note that the NH code also continues to be tested indirectly as well,
via the tests for the "adiantum(xchacha12,aes)" crypto_skcipher.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
---
 lib/crypto/tests/Kconfig            |   8 +
 lib/crypto/tests/Makefile           |   1 +
 lib/crypto/tests/nh-testvecs.h      | 298 ++++++++++++++++++++++++++++
 lib/crypto/tests/nh_kunit.c         |  43 ++++
 scripts/crypto/gen-hash-testvecs.py |  40 ++++
 5 files changed, 390 insertions(+)
 create mode 100644 lib/crypto/tests/nh-testvecs.h
 create mode 100644 lib/crypto/tests/nh_kunit.c

diff --git a/lib/crypto/tests/Kconfig b/lib/crypto/tests/Kconfig
index c9165c14fc46..4970463ea0aa 100644
--- a/lib/crypto/tests/Kconfig
+++ b/lib/crypto/tests/Kconfig
@@ -45,10 +45,18 @@ config CRYPTO_LIB_MLDSA_KUNIT_TEST
 	select CRYPTO_LIB_BENCHMARK_VISIBLE
 	select CRYPTO_LIB_MLDSA
 	help
 	  KUnit tests for the ML-DSA digital signature algorithm.
 
+config CRYPTO_LIB_NH_KUNIT_TEST
+	tristate "KUnit tests for NH" if !KUNIT_ALL_TESTS
+	depends on KUNIT
+	default KUNIT_ALL_TESTS || CRYPTO_SELFTESTS
+	select CRYPTO_LIB_NH
+	help
+	  KUnit tests for the NH almost-universal hash function.
+
 config CRYPTO_LIB_POLY1305_KUNIT_TEST
 	tristate "KUnit tests for Poly1305" if !KUNIT_ALL_TESTS
 	depends on KUNIT
 	default KUNIT_ALL_TESTS || CRYPTO_SELFTESTS
 	select CRYPTO_LIB_BENCHMARK_VISIBLE
diff --git a/lib/crypto/tests/Makefile b/lib/crypto/tests/Makefile
index 3dde0b40b2c5..f4262379f56c 100644
--- a/lib/crypto/tests/Makefile
+++ b/lib/crypto/tests/Makefile
@@ -3,10 +3,11 @@
 obj-$(CONFIG_CRYPTO_LIB_BLAKE2B_KUNIT_TEST) += blake2b_kunit.o
 obj-$(CONFIG_CRYPTO_LIB_BLAKE2S_KUNIT_TEST) += blake2s_kunit.o
 obj-$(CONFIG_CRYPTO_LIB_CURVE25519_KUNIT_TEST) += curve25519_kunit.o
 obj-$(CONFIG_CRYPTO_LIB_MD5_KUNIT_TEST) += md5_kunit.o
 obj-$(CONFIG_CRYPTO_LIB_MLDSA_KUNIT_TEST) += mldsa_kunit.o
+obj-$(CONFIG_CRYPTO_LIB_NH_KUNIT_TEST) += nh_kunit.o
 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
diff --git a/lib/crypto/tests/nh-testvecs.h b/lib/crypto/tests/nh-testvecs.h
new file mode 100644
index 000000000000..b393e1f90f31
--- /dev/null
+++ b/lib/crypto/tests/nh-testvecs.h
@@ -0,0 +1,298 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* This file was generated by: ./scripts/crypto/gen-hash-testvecs.py nh */
+
+static const u8 nh_test_key[NH_KEY_BYTES] = {
+	0x04, 0x59, 0x66, 0x92, 0x81, 0xd7, 0xe9, 0x25,
+	0x68, 0xfa, 0xb0, 0xca, 0x9f, 0xea, 0x98, 0xca,
+	0xcd, 0xbf, 0x6d, 0xa5, 0x0c, 0x22, 0xc3, 0x57,
+	0xdc, 0x35, 0x05, 0xdd, 0x5b, 0xb0, 0xce, 0xf6,
+	0xb2, 0x4c, 0x77, 0x2e, 0xd2, 0x63, 0xf0, 0x17,
+	0x60, 0xd8, 0xd3, 0xd9, 0xed, 0x34, 0xb6, 0xed,
+	0x6a, 0x11, 0xc0, 0x25, 0xda, 0xba, 0x7e, 0xef,
+	0x49, 0x13, 0xf7, 0xd9, 0xfc, 0xb6, 0xfd, 0x58,
+	0xe9, 0x5f, 0xc5, 0xc4, 0x69, 0x89, 0xba, 0xa6,
+	0x2b, 0x58, 0x8d, 0x36, 0x6c, 0xb9, 0x90, 0x1e,
+	0x64, 0xc7, 0x44, 0x84, 0x03, 0x70, 0x30, 0x47,
+	0xdd, 0x58, 0xf4, 0x87, 0x61, 0xfd, 0x9c, 0x6b,
+	0x51, 0x1b, 0x39, 0x1d, 0x6d, 0x50, 0xae, 0x19,
+	0x71, 0x03, 0xc7, 0xa7, 0x42, 0x82, 0x8f, 0xa5,
+	0x63, 0x6a, 0xe2, 0x8a, 0xad, 0x4b, 0x40, 0xa7,
+	0x3f, 0x8b, 0xe4, 0xae, 0xb2, 0x8a, 0x14, 0x78,
+	0x91, 0x07, 0xba, 0x02, 0x08, 0xc1, 0x34, 0xb8,
+	0xda, 0x61, 0x67, 0xf6, 0x98, 0x97, 0x1a, 0xcb,
+	0x0f, 0x82, 0x80, 0xff, 0x02, 0x54, 0x16, 0x57,
+	0x18, 0x35, 0xaf, 0x16, 0x17, 0x68, 0xcc, 0xc7,
+	0x52, 0xac, 0x31, 0x39, 0x60, 0xe4, 0xb4, 0xcb,
+	0x0e, 0xf9, 0x57, 0xe9, 0x96, 0xff, 0x99, 0xd6,
+	0x10, 0x96, 0x09, 0xab, 0x28, 0x92, 0x1b, 0x9f,
+	0x10, 0xde, 0x3e, 0x87, 0xb8, 0x9d, 0x2d, 0xa0,
+	0x3c, 0x91, 0x85, 0x8c, 0x9e, 0xc0, 0x97, 0x9a,
+	0xb4, 0x54, 0x7f, 0x4a, 0x63, 0xc2, 0x75, 0x0f,
+	0x0d, 0x2f, 0x62, 0x56, 0x48, 0x0e, 0xb6, 0xc7,
+	0xcf, 0x0d, 0x78, 0xca, 0xbd, 0x31, 0x9e, 0x4c,
+	0xf7, 0x3f, 0x9e, 0xc2, 0xea, 0x5e, 0x44, 0x6d,
+	0x76, 0xf9, 0xc5, 0xe0, 0x29, 0xea, 0x15, 0xbf,
+	0xaf, 0xd4, 0x75, 0xc8, 0x89, 0xcf, 0x4f, 0x17,
+	0xfd, 0x4a, 0x45, 0xa5, 0x4d, 0x2d, 0x87, 0x11,
+	0x2b, 0x3e, 0x64, 0xa2, 0x6b, 0xc5, 0x23, 0x8c,
+	0xfa, 0x71, 0x13, 0x72, 0x0e, 0x7c, 0xe1, 0x2c,
+	0x9f, 0x0e, 0x29, 0xc9, 0x15, 0xde, 0x4e, 0xd7,
+	0x42, 0x1f, 0x8e, 0xe1, 0x91, 0x99, 0x50, 0x38,
+	0x7f, 0x15, 0xc0, 0xf6, 0x4b, 0xfd, 0x9d, 0x40,
+	0xe9, 0x44, 0x51, 0xca, 0x3b, 0x83, 0x41, 0x9f,
+	0x82, 0x64, 0x66, 0x22, 0x12, 0x43, 0x1c, 0x4f,
+	0x45, 0x11, 0x3a, 0x46, 0xb1, 0x7c, 0x62, 0x0a,
+	0x9d, 0x4c, 0x99, 0x85, 0xb0, 0x10, 0x19, 0xcf,
+	0xeb, 0xf9, 0x65, 0xaf, 0xd8, 0x05, 0x9e, 0x61,
+	0x03, 0x5f, 0x15, 0x99, 0xa9, 0x05, 0x20, 0xc8,
+	0xaf, 0xab, 0x31, 0x9d, 0xd5, 0xdf, 0x24, 0xce,
+	0x2b, 0x6d, 0xd7, 0x17, 0xc3, 0x04, 0xff, 0x82,
+	0xa7, 0x18, 0x39, 0xe9, 0x0d, 0x0a, 0x5f, 0xb9,
+	0xc9, 0x86, 0x1d, 0xf8, 0x02, 0x2d, 0xc3, 0x88,
+	0x28, 0x73, 0x5c, 0xac, 0x25, 0xc9, 0xfe, 0xcb,
+	0xd2, 0xfd, 0x63, 0x74, 0xac, 0xe1, 0xb8, 0xa2,
+	0xc6, 0x2b, 0xb5, 0x40, 0x01, 0x9b, 0xed, 0xee,
+	0x7b, 0x63, 0x66, 0x05, 0x45, 0xc2, 0x6c, 0xd8,
+	0x58, 0xf1, 0xa1, 0x3d, 0xc8, 0x43, 0x59, 0x4b,
+	0x39, 0x87, 0x24, 0x64, 0x92, 0xb0, 0xab, 0x75,
+	0xf1, 0xb7, 0xbf, 0x7c, 0xde, 0xc0, 0xaf, 0x4a,
+	0xc2, 0x7b, 0xd9, 0x8a, 0x99, 0xcd, 0x83, 0x01,
+	0xe6, 0xae, 0xeb, 0x16, 0xe7, 0x54, 0x9c, 0x95,
+	0x0a, 0x91, 0x02, 0xaf, 0x9f, 0x79, 0x40, 0x45,
+	0xce, 0x47, 0x41, 0x65, 0xca, 0x80, 0x0d, 0x14,
+	0x46, 0x58, 0x5d, 0x4d, 0x28, 0x55, 0x70, 0x49,
+	0x7c, 0x32, 0x1f, 0x01, 0xaa, 0x05, 0x2f, 0xf1,
+	0xeb, 0xa3, 0xe6, 0x1d, 0xf9, 0x43, 0xe0, 0x58,
+	0x05, 0x61, 0x22, 0xc3, 0xee, 0xe4, 0x6f, 0x94,
+	0xaf, 0x82, 0xda, 0x18, 0x18, 0x63, 0x9c, 0xfa,
+	0xc0, 0x04, 0x27, 0xc5, 0x39, 0x5e, 0x7a, 0xa6,
+	0x85, 0x46, 0xb7, 0x76, 0xc9, 0x16, 0xf2, 0xf8,
+	0x40, 0x8d, 0x4b, 0x5e, 0x72, 0xf3, 0x3e, 0x12,
+	0xa4, 0x80, 0x39, 0xb2, 0x92, 0xfe, 0x6e, 0x5b,
+	0x5b, 0xad, 0xea, 0x29, 0xbc, 0x66, 0xe6, 0xfe,
+	0x80, 0x02, 0x5d, 0x83, 0x37, 0xfc, 0xde, 0x6c,
+	0x25, 0x54, 0xa2, 0xff, 0x7d, 0xb6, 0xe1, 0xd6,
+	0xcf, 0xdb, 0x60, 0xe3, 0xbe, 0x2f, 0x4e, 0xb4,
+	0xf5, 0xb4, 0x51, 0xf7, 0x5a, 0x25, 0xda, 0x40,
+	0x84, 0x5e, 0xc0, 0x0a, 0x6b, 0xfa, 0x0c, 0xfb,
+	0x5e, 0x3e, 0x12, 0x6c, 0x39, 0x35, 0xc0, 0x28,
+	0xd6, 0x1b, 0x3a, 0x72, 0xc3, 0xfe, 0xa5, 0x4c,
+	0x35, 0xa2, 0x42, 0xf6, 0x3d, 0xa5, 0xbf, 0xb5,
+	0x39, 0xe3, 0xc9, 0xd5, 0x8c, 0x1b, 0xe5, 0xef,
+	0x91, 0xd2, 0x80, 0x6f, 0xcc, 0x77, 0x44, 0x50,
+	0x62, 0xc7, 0xac, 0x29, 0xcb, 0x72, 0xda, 0x6d,
+	0xc5, 0xfe, 0xa7, 0xee, 0x8b, 0xeb, 0xfc, 0xa3,
+	0x46, 0x18, 0x5f, 0xaa, 0xc3, 0x65, 0xd0, 0x8f,
+	0x67, 0x98, 0xd6, 0xce, 0x5f, 0x84, 0xd4, 0x96,
+	0x1b, 0x67, 0xa0, 0xcf, 0xfc, 0x94, 0x55, 0x5e,
+	0x4b, 0x51, 0x68, 0xa7, 0x6d, 0x02, 0xf9, 0x53,
+	0x54, 0x86, 0x6b, 0x53, 0x39, 0xe0, 0x36, 0x23,
+	0x87, 0x1a, 0xfb, 0x53, 0x1a, 0x65, 0xd8, 0x42,
+	0xa8, 0x85, 0xfd, 0x2c, 0x7f, 0x6b, 0x7f, 0x67,
+	0x70, 0x23, 0x6c, 0xe9, 0x0b, 0xf0, 0x1e, 0x0d,
+	0x0b, 0xb4, 0xd4, 0x96, 0x14, 0x95, 0x7e, 0xf3,
+	0x9b, 0xdd, 0xd7, 0xc4, 0x24, 0x22, 0xb9, 0x9d,
+	0xb3, 0xa6, 0xac, 0x09, 0x7c, 0x00, 0xbf, 0xd0,
+	0xdc, 0xfb, 0x9b, 0x7c, 0x8c, 0xbd, 0xd4, 0x1a,
+	0x13, 0x2b, 0x82, 0x3d, 0x7c, 0x8c, 0x10, 0x47,
+	0x49, 0x6c, 0x53, 0xeb, 0xa7, 0xc2, 0xde, 0xed,
+	0xe2, 0x55, 0x93, 0x2c, 0x1a, 0x5a, 0x7d, 0xe1,
+	0x37, 0x62, 0xdd, 0x29, 0x1a, 0x72, 0x82, 0xc0,
+	0x14, 0x73, 0x5d, 0x0e, 0x9b, 0xcc, 0x54, 0x68,
+	0x3a, 0x4d, 0x56, 0x8f, 0xc9, 0x4e, 0xaf, 0x7b,
+	0xde, 0x17, 0x9c, 0x5e, 0x83, 0x82, 0x22, 0xe3,
+	0x28, 0xdf, 0x1b, 0xb6, 0xdb, 0x17, 0x90, 0x48,
+	0xb5, 0x13, 0x4e, 0xd3, 0x97, 0x5e, 0xb3, 0x9c,
+	0x16, 0x08, 0xc8, 0x77, 0xb3, 0xcd, 0x94, 0x90,
+	0x4f, 0x77, 0xaf, 0x67, 0xdd, 0x80, 0x15, 0x1c,
+	0x59, 0xfb, 0x3c, 0xec, 0xf8, 0xb3, 0x67, 0xfb,
+	0xa0, 0x94, 0x3c, 0x53, 0x99, 0x49, 0x94, 0x2c,
+	0x85, 0x26, 0x92, 0x6d, 0x8d, 0x48, 0xf6, 0x72,
+	0xdd, 0xfb, 0xb2, 0x10, 0x51, 0x5b, 0xbe, 0xd5,
+	0x70, 0x3d, 0x28, 0x94, 0x98, 0x4f, 0x6e, 0x20,
+	0x7b, 0x7d, 0x0f, 0x56, 0xc9, 0x96, 0x5f, 0x60,
+	0x2e, 0x2f, 0x9b, 0x38, 0x7f, 0xc7, 0x3c, 0x6b,
+	0x2f, 0x2b, 0x8f, 0x1f, 0x07, 0x1c, 0x85, 0x57,
+	0x16, 0x2e, 0xc7, 0x74, 0xe5, 0xf2, 0x0d, 0xfe,
+	0xef, 0x57, 0xb0, 0xa4, 0x4f, 0x4c, 0x7d, 0x81,
+	0xbb, 0xaa, 0xcb, 0xa0, 0xb0, 0x51, 0xcf, 0xc2,
+	0xee, 0x90, 0x2e, 0x5e, 0x27, 0xca, 0xd3, 0xe8,
+	0xf3, 0x55, 0x02, 0x56, 0x06, 0xa5, 0xad, 0xdf,
+	0xa3, 0xa9, 0x06, 0x05, 0x53, 0x74, 0x55, 0xd5,
+	0xd2, 0x20, 0x0a, 0x6d, 0x4a, 0xef, 0x16, 0xbf,
+	0xc3, 0xb2, 0x75, 0x93, 0xd8, 0x6e, 0x0f, 0xd2,
+	0xae, 0x3b, 0xc0, 0x00, 0x22, 0x6f, 0xb5, 0x0a,
+	0x41, 0xfc, 0xf9, 0x41, 0xfc, 0x16, 0x4f, 0xa6,
+	0x1c, 0x18, 0x41, 0x67, 0x73, 0xa8, 0x79, 0xa9,
+	0x54, 0x18, 0x4e, 0x88, 0x44, 0x0f, 0xa1, 0x5b,
+	0xf0, 0x68, 0xea, 0x3c, 0x62, 0x59, 0x8d, 0xc7,
+	0x6f, 0xd7, 0x72, 0x20, 0x74, 0x39, 0xd4, 0x3a,
+	0x41, 0x1b, 0x58, 0x57, 0x54, 0x85, 0x60, 0xca,
+	0x49, 0x4b, 0xa1, 0x04, 0x91, 0xb6, 0xf2, 0xcd,
+	0x62, 0x63, 0x67, 0xd1, 0xee, 0x6b, 0x9e, 0x5d,
+	0xd6, 0xc4, 0x58, 0x6b, 0xe1, 0xe6, 0x4a, 0xdb,
+	0xe8, 0xb1, 0x35, 0x03, 0x15, 0x8d, 0x34, 0x69,
+	0x4c, 0xd2, 0x54, 0xce, 0xe8, 0x6a, 0x69, 0x6f,
+	0xaa, 0xb5, 0x1f, 0x86, 0xed, 0xac, 0x4f, 0x16,
+	0x1e, 0x48, 0x93, 0xe8, 0x6c, 0x24, 0x1c, 0xd0,
+	0xbb, 0x61, 0xc2, 0x34, 0xdd, 0xc9, 0x5c, 0xce,
+};
+
+static const u8 nh_test_msg[NH_MESSAGE_BYTES] = {
+	0x99, 0x57, 0x61, 0x41, 0xad, 0x08, 0x7e, 0x17,
+	0xd4, 0xef, 0x0b, 0x23, 0xff, 0x0b, 0x96, 0x0a,
+	0x6c, 0x98, 0xac, 0x78, 0x5e, 0xb6, 0xb2, 0x67,
+	0x0f, 0x48, 0xf4, 0xa1, 0xe5, 0x1e, 0xfe, 0x83,
+	0xe4, 0x56, 0x2a, 0x03, 0x64, 0xff, 0x7a, 0xf3,
+	0x03, 0xfe, 0xa7, 0x86, 0xdc, 0x35, 0x79, 0x13,
+	0xf8, 0xe1, 0x59, 0x19, 0x04, 0x43, 0x24, 0x82,
+	0x44, 0x82, 0x41, 0x2b, 0xc7, 0xcf, 0xf5, 0xa4,
+	0xdc, 0xca, 0xf5, 0x34, 0xc4, 0x23, 0x3c, 0x1f,
+	0xa8, 0x84, 0x1f, 0x2a, 0xcd, 0xae, 0x9d, 0x5e,
+	0x05, 0xe2, 0xfb, 0x0c, 0x68, 0x81, 0x90, 0x11,
+	0x44, 0xf6, 0xdd, 0x5b, 0x51, 0xd3, 0xe0, 0xab,
+	0x29, 0x3a, 0xa9, 0x9c, 0xf6, 0x7e, 0x2d, 0xe3,
+	0x6c, 0x09, 0x59, 0xd7, 0xfa, 0x7f, 0x6a, 0x33,
+	0x3b, 0x23, 0x7b, 0x1b, 0xb2, 0x79, 0x5f, 0x5c,
+	0xb6, 0x2d, 0xb0, 0xf8, 0xab, 0x33, 0x28, 0xe0,
+	0x72, 0x2e, 0x2f, 0x03, 0x22, 0x16, 0xb4, 0x87,
+	0xf7, 0x14, 0x3f, 0x55, 0x8a, 0xb0, 0x47, 0xdb,
+	0x42, 0x2d, 0xc0, 0x0c, 0x0a, 0x33, 0xf8, 0xab,
+	0x44, 0xae, 0xa3, 0xc9, 0xfc, 0xf6, 0x34, 0x8c,
+	0x60, 0x30, 0x6d, 0x31, 0x70, 0xf3, 0x39, 0x53,
+	0xf1, 0x2d, 0xb9, 0x6c, 0xa6, 0x48, 0x9c, 0x9c,
+	0xc2, 0x88, 0xb3, 0xa9, 0x98, 0xb6, 0xc3, 0x47,
+	0x94, 0x02, 0x9d, 0x98, 0x6e, 0x25, 0x6c, 0xf5,
+	0x9b, 0xc6, 0x4d, 0xee, 0x07, 0x1e, 0x25, 0x8f,
+	0x01, 0xde, 0xad, 0xe5, 0x77, 0x4f, 0xd1, 0xc0,
+	0x62, 0xbb, 0x3a, 0xb9, 0x83, 0x0b, 0x29, 0x76,
+	0x4f, 0xb1, 0x86, 0x2c, 0x27, 0xc7, 0x38, 0x65,
+	0xcb, 0x78, 0xb7, 0x02, 0x10, 0x9e, 0xde, 0x83,
+	0xd1, 0xac, 0x05, 0x86, 0x23, 0xce, 0x4f, 0x8d,
+	0xcc, 0x4e, 0x3f, 0x04, 0xf4, 0x39, 0x91, 0x81,
+	0x1c, 0x42, 0x47, 0x4d, 0x50, 0xe5, 0x01, 0x22,
+	0x98, 0xcf, 0x91, 0x36, 0xb3, 0x7c, 0xcf, 0x78,
+	0x07, 0x22, 0xa9, 0x18, 0xd2, 0xcd, 0x7d, 0x4d,
+	0xa6, 0xcb, 0xaa, 0x52, 0x13, 0x49, 0x64, 0xb0,
+	0xa5, 0x3d, 0xc7, 0xc3, 0x10, 0x87, 0x2e, 0x76,
+	0xa9, 0x52, 0xc5, 0x50, 0x18, 0xc0, 0x5d, 0xb4,
+	0x4c, 0xc6, 0x7f, 0x64, 0xae, 0x53, 0xc3, 0x46,
+	0x99, 0xb7, 0x61, 0x6b, 0x08, 0x43, 0x08, 0x4c,
+	0x90, 0x2c, 0xee, 0x56, 0x91, 0xb4, 0x28, 0xa8,
+	0xa8, 0x8b, 0x3b, 0x1a, 0x67, 0x71, 0xf2, 0x81,
+	0x48, 0x20, 0x71, 0x30, 0xdd, 0x69, 0x8a, 0xc2,
+	0x4c, 0x9d, 0x4e, 0x17, 0xfb, 0x2e, 0xe7, 0x9b,
+	0x86, 0x94, 0xa5, 0xce, 0xf9, 0x74, 0x56, 0xff,
+	0x3b, 0xff, 0xd9, 0x5a, 0xc8, 0x98, 0xf5, 0x25,
+	0xa2, 0xb9, 0x66, 0x46, 0x89, 0x17, 0x39, 0x08,
+	0x69, 0x03, 0x59, 0x1e, 0x13, 0x12, 0x68, 0xe7,
+	0x2f, 0x00, 0xd3, 0xf3, 0x71, 0xd1, 0x20, 0xc5,
+	0x0b, 0x38, 0x89, 0xda, 0x62, 0x3c, 0xce, 0xea,
+	0x04, 0x19, 0x47, 0x6d, 0xd8, 0x64, 0x38, 0x60,
+	0x96, 0x71, 0x68, 0x48, 0x79, 0xf8, 0xf4, 0x76,
+	0x33, 0xf6, 0x60, 0x8d, 0x21, 0xd0, 0xee, 0x41,
+	0xc0, 0xbe, 0x33, 0x61, 0x5e, 0x66, 0xe6, 0x16,
+	0x14, 0xc7, 0xfb, 0x6c, 0xf3, 0x58, 0xef, 0x12,
+	0x7c, 0x70, 0x65, 0x5d, 0x55, 0xe8, 0xf2, 0x92,
+	0x3a, 0xfe, 0x34, 0x64, 0x31, 0x7c, 0x29, 0xbb,
+	0x01, 0x18, 0xbd, 0xb6, 0xe4, 0x1e, 0xa4, 0xf3,
+	0x7b, 0x4c, 0x6a, 0x0d, 0x01, 0xfc, 0xc7, 0x66,
+	0xc3, 0x88, 0x37, 0x25, 0xcf, 0xe9, 0xca, 0x82,
+	0xeb, 0xa1, 0x38, 0x40, 0xc9, 0xdb, 0x38, 0x7b,
+	0x78, 0xcf, 0x11, 0xa3, 0x1c, 0x6b, 0x70, 0xc8,
+	0xe1, 0x2f, 0x7c, 0x17, 0x2c, 0x58, 0x28, 0xa4,
+	0x13, 0x40, 0xc7, 0x69, 0x0f, 0x04, 0xe5, 0x8e,
+	0xf0, 0x67, 0x53, 0xea, 0x10, 0xf5, 0x83, 0xc9,
+	0xcb, 0x6b, 0x16, 0xef, 0x2e, 0x55, 0xb3, 0xdd,
+	0xed, 0xf9, 0x1a, 0x52, 0x9a, 0x73, 0x78, 0x14,
+	0x14, 0x21, 0xfc, 0xef, 0x3c, 0x40, 0xa9, 0xfe,
+	0xef, 0xd7, 0x6e, 0x28, 0x2f, 0xd3, 0x73, 0xed,
+	0xa3, 0x73, 0xb5, 0x62, 0x41, 0xe6, 0xd4, 0x79,
+	0x49, 0x31, 0x2b, 0x86, 0x74, 0x56, 0x21, 0xfe,
+	0x6d, 0xb2, 0xbe, 0x81, 0x80, 0xa6, 0x81, 0x19,
+	0x90, 0x79, 0x6f, 0xc4, 0x4e, 0x7d, 0x6f, 0x2f,
+	0xa8, 0x6f, 0xd5, 0xc4, 0x7e, 0x23, 0x3b, 0xe6,
+	0x9b, 0x60, 0x97, 0x7b, 0xe2, 0x08, 0x8a, 0xaa,
+	0xc7, 0x7c, 0xf6, 0xe5, 0x01, 0x3e, 0xd2, 0x29,
+	0x7d, 0xd7, 0x40, 0x84, 0x95, 0xfa, 0xdf, 0xd8,
+	0x81, 0xe9, 0x5e, 0xdd, 0x0d, 0x17, 0x51, 0x6b,
+	0x8c, 0x0e, 0x47, 0xf9, 0x0c, 0x92, 0x1b, 0x60,
+	0xca, 0x06, 0x8a, 0xe5, 0xe8, 0x0f, 0x06, 0x75,
+	0x5d, 0x76, 0xc9, 0x32, 0x2c, 0x52, 0x2c, 0x2e,
+	0xd8, 0x66, 0x38, 0x75, 0x16, 0xc7, 0x7d, 0x51,
+	0xc4, 0xc2, 0x22, 0xc8, 0x19, 0xfc, 0x3d, 0x69,
+	0x1e, 0xd9, 0x64, 0x47, 0x5d, 0x21, 0x84, 0x46,
+	0xd7, 0xe1, 0xf0, 0x95, 0x3a, 0x8f, 0xbd, 0x7a,
+	0x53, 0x71, 0x4c, 0x54, 0xc1, 0x3e, 0x27, 0xde,
+	0xeb, 0x04, 0x11, 0xb0, 0x33, 0x4d, 0x57, 0x0b,
+	0x6b, 0x7d, 0x6c, 0xd5, 0x87, 0x7e, 0xb4, 0xe2,
+	0x94, 0x9e, 0x9f, 0x74, 0xe8, 0xb7, 0xfa, 0x05,
+	0x9b, 0x8f, 0x81, 0x43, 0x35, 0x82, 0xb8, 0x5b,
+	0xa8, 0x5e, 0xfa, 0x7a, 0x80, 0x8d, 0xd2, 0x90,
+	0x58, 0x79, 0x89, 0x56, 0x90, 0x2b, 0xff, 0x92,
+	0x3c, 0x35, 0xbe, 0x99, 0x5f, 0xd2, 0x4b, 0x15,
+	0x58, 0x4b, 0xbf, 0x08, 0x9b, 0x9b, 0x97, 0x10,
+	0xa4, 0x55, 0xc7, 0xec, 0x29, 0xc5, 0x14, 0x3e,
+	0x8f, 0x56, 0xa3, 0x92, 0x9e, 0x33, 0xcc, 0x9e,
+	0x77, 0x2f, 0x33, 0xcb, 0xc4, 0xe9, 0x19, 0xf4,
+	0x32, 0x2b, 0xef, 0x6c, 0x1c, 0x92, 0x2c, 0x45,
+	0x88, 0x74, 0x5f, 0xcf, 0x56, 0xfd, 0x87, 0x5f,
+	0xb6, 0x9b, 0xa2, 0x51, 0xda, 0x9b, 0x83, 0x4f,
+	0xec, 0x14, 0xe8, 0xd2, 0x42, 0x03, 0xcb, 0xe8,
+	0xd0, 0xb7, 0xf8, 0x38, 0xde, 0x6f, 0xdf, 0x43,
+	0xfa, 0x41, 0xab, 0xec, 0x2e, 0x3c, 0x93, 0x39,
+	0x76, 0xd1, 0x6f, 0x5b, 0x6c, 0x6e, 0x8d, 0xeb,
+	0x45, 0x6b, 0xc5, 0x76, 0x00, 0x29, 0xca, 0x3b,
+	0xdb, 0x78, 0xc2, 0x32, 0x09, 0x39, 0x19, 0x50,
+	0xa2, 0x44, 0x92, 0x09, 0xdb, 0x8b, 0x9e, 0x16,
+	0x76, 0x7f, 0xf1, 0x78, 0x7b, 0xb2, 0x51, 0xbc,
+	0x28, 0xbd, 0xb0, 0x7f, 0x25, 0x63, 0x7d, 0x34,
+	0xfb, 0xf6, 0x36, 0x24, 0xc7, 0xf9, 0x41, 0xb6,
+	0x2a, 0x06, 0xfc, 0xf0, 0x83, 0xf2, 0x12, 0x3d,
+	0x60, 0x2e, 0x10, 0x70, 0x31, 0x6f, 0x37, 0x08,
+	0x3e, 0x91, 0x93, 0xb5, 0xda, 0xb8, 0x4c, 0x1b,
+	0xd8, 0xb8, 0x3b, 0xd5, 0x3e, 0xb6, 0xc0, 0xbb,
+	0x38, 0x0f, 0xd2, 0x68, 0x4f, 0x78, 0x56, 0xf6,
+	0xda, 0x65, 0xb4, 0x0b, 0xb4, 0xaf, 0xa8, 0x19,
+	0x2f, 0x70, 0x55, 0xe0, 0x47, 0x31, 0x9f, 0x37,
+	0x1a, 0x47, 0xb9, 0x0c, 0x97, 0x79, 0xfc, 0xa9,
+	0x76, 0xe6, 0xfa, 0x38, 0x67, 0x25, 0xd3, 0x89,
+	0x8d, 0xad, 0xc6, 0x11, 0x2d, 0x77, 0x0b, 0x35,
+	0xa2, 0xe2, 0xdf, 0xc8, 0x94, 0xd5, 0xdf, 0xd2,
+	0x69, 0x2a, 0x99, 0x93, 0xfa, 0x4a, 0x5f, 0xc7,
+	0x8a, 0x14, 0x5f, 0x2a, 0xf3, 0x02, 0xf0, 0x3e,
+	0x21, 0x8e, 0x2e, 0x4b, 0xc4, 0xd2, 0xc8, 0xa6,
+	0x41, 0x6e, 0x17, 0x36, 0xe9, 0xad, 0x73, 0x33,
+	0x6c, 0xea, 0xc2, 0x31, 0x8f, 0x30, 0x51, 0x5c,
+	0x1c, 0x20, 0xe6, 0x05, 0x1a, 0x17, 0x15, 0x5d,
+	0x3e, 0x8f, 0xd2, 0x7f, 0xa1, 0xc5, 0x47, 0xb3,
+	0xb2, 0x9c, 0xe8, 0xf0, 0x6d, 0xc1, 0xc3, 0xa2,
+};
+
+static const u8 nh_test_val16[NH_HASH_BYTES] = {
+	0x30, 0x77, 0x55, 0x7c, 0x45, 0xd8, 0xce, 0xf7,
+	0x2a, 0xb5, 0x14, 0x8c, 0x35, 0x7e, 0xaa, 0x00,
+	0x50, 0xbc, 0x50, 0x7c, 0xd3, 0x20, 0x7c, 0x9c,
+	0xb4, 0xf1, 0x91, 0x26, 0x81, 0x03, 0xa5, 0x68,
+};
+
+static const u8 nh_test_val96[NH_HASH_BYTES] = {
+	0xd2, 0x19, 0xca, 0xa5, 0x6c, 0x0c, 0xdf, 0x2f,
+	0x69, 0xfa, 0x75, 0xc1, 0x63, 0xdb, 0xfa, 0x4d,
+	0x45, 0x2b, 0xb8, 0xdb, 0xac, 0xee, 0x61, 0xc6,
+	0x7a, 0x83, 0xb6, 0x0f, 0x32, 0x82, 0xe4, 0xd0,
+};
+
+static const u8 nh_test_val256[NH_HASH_BYTES] = {
+	0x33, 0x8f, 0xb4, 0x96, 0xf1, 0xb6, 0xf1, 0xb5,
+	0x05, 0x19, 0xbb, 0x6b, 0xda, 0xd9, 0x95, 0x75,
+	0x96, 0x3f, 0x8b, 0x42, 0xb6, 0xcd, 0xb7, 0xb7,
+	0xe7, 0x97, 0xb5, 0xa9, 0x0b, 0xd7, 0xdd, 0x33,
+};
+
+static const u8 nh_test_val1024[NH_HASH_BYTES] = {
+	0x32, 0x3d, 0x51, 0xe1, 0x77, 0xb6, 0xac, 0x06,
+	0x84, 0x67, 0xb7, 0xf2, 0x24, 0xe7, 0xec, 0xfd,
+	0x96, 0x64, 0xff, 0x55, 0xc7, 0x1b, 0xf9, 0xdc,
+	0xa3, 0xc7, 0x32, 0x06, 0x79, 0xcf, 0xca, 0xb6,
+};
diff --git a/lib/crypto/tests/nh_kunit.c b/lib/crypto/tests/nh_kunit.c
new file mode 100644
index 000000000000..a8a3c3f345cb
--- /dev/null
+++ b/lib/crypto/tests/nh_kunit.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2025 Google LLC
+ */
+#include <crypto/nh.h>
+#include <kunit/test.h>
+#include "nh-testvecs.h"
+
+static void test_nh(struct kunit *test)
+{
+	u32 *key = kunit_kmalloc(test, NH_KEY_BYTES, GFP_KERNEL);
+	__le64 hash[NH_NUM_PASSES];
+
+	KUNIT_ASSERT_NOT_NULL(test, key);
+	memcpy(key, nh_test_key, NH_KEY_BYTES);
+	le32_to_cpu_array(key, NH_KEY_WORDS);
+
+	nh(key, nh_test_msg, 16, hash);
+	KUNIT_ASSERT_MEMEQ(test, hash, nh_test_val16, NH_HASH_BYTES);
+
+	nh(key, nh_test_msg, 96, hash);
+	KUNIT_ASSERT_MEMEQ(test, hash, nh_test_val96, NH_HASH_BYTES);
+
+	nh(key, nh_test_msg, 256, hash);
+	KUNIT_ASSERT_MEMEQ(test, hash, nh_test_val256, NH_HASH_BYTES);
+
+	nh(key, nh_test_msg, 1024, hash);
+	KUNIT_ASSERT_MEMEQ(test, hash, nh_test_val1024, NH_HASH_BYTES);
+}
+
+static struct kunit_case nh_test_cases[] = {
+	KUNIT_CASE(test_nh),
+	{},
+};
+
+static struct kunit_suite nh_test_suite = {
+	.name = "nh",
+	.test_cases = nh_test_cases,
+};
+kunit_test_suite(nh_test_suite);
+
+MODULE_DESCRIPTION("KUnit tests for NH");
+MODULE_LICENSE("GPL");
diff --git a/scripts/crypto/gen-hash-testvecs.py b/scripts/crypto/gen-hash-testvecs.py
index c1d0517140bd..1e20ecb46314 100755
--- a/scripts/crypto/gen-hash-testvecs.py
+++ b/scripts/crypto/gen-hash-testvecs.py
@@ -182,10 +182,48 @@ def gen_additional_blake2_testvecs(alg):
             hashes += h.digest()
     print_static_u8_array_definition(
             f'{alg}_keyed_testvec_consolidated[{alg_digest_size_const(alg)}]',
             compute_hash(alg, hashes))
 
+def nh_extract_int(bytestr, pos, length):
+    assert pos % 8 == 0 and length % 8 == 0
+    return int.from_bytes(bytestr[pos//8 : pos//8 + length//8], byteorder='little')
+
+# The NH "almost-universal hash function" used in Adiantum.  This is a
+# straightforward translation of the pseudocode from Section 6.3 of the Adiantum
+# paper (https://eprint.iacr.org/2018/720.pdf), except the outer loop is omitted
+# because we assume len(msg) <= 1024.  (The kernel's nh() function is only
+# expected to handle up to 1024 bytes; it's just called repeatedly as needed.)
+def nh(key, msg):
+    (w, s, r, u) = (32, 2, 4, 8192)
+    l = 8 * len(msg)
+    assert l <= u
+    assert l % (2*s*w) == 0
+    h = bytes()
+    for i in range(0, 2*s*w*r, 2*s*w):
+        p = 0
+        for j in range(0, l, 2*s*w):
+            for k in range(0, w*s, w):
+                a0 = nh_extract_int(key, i + j + k, w)
+                a1 = nh_extract_int(key, i + j + k + s*w, w)
+                b0 = nh_extract_int(msg, j + k, w)
+                b1 = nh_extract_int(msg, j + k + s*w, w)
+                p += ((a0 + b0) % 2**w) * ((a1 + b1) % 2**w)
+        h += (p % 2**64).to_bytes(8, byteorder='little')
+    return h
+
+def gen_nh_testvecs():
+    NH_KEY_BYTES = 1072
+    NH_MESSAGE_BYTES = 1024
+    key = rand_bytes(NH_KEY_BYTES)
+    msg = rand_bytes(NH_MESSAGE_BYTES)
+    print_static_u8_array_definition('nh_test_key[NH_KEY_BYTES]', key)
+    print_static_u8_array_definition('nh_test_msg[NH_MESSAGE_BYTES]', msg)
+    for length in [16, 96, 256, 1024]:
+        print_static_u8_array_definition(f'nh_test_val{length}[NH_HASH_BYTES]',
+                                         nh(key, msg[:length]))
+
 def gen_additional_poly1305_testvecs():
     key = b'\xff' * POLY1305_KEY_SIZE
     data = b''
     ctx = Poly1305(key)
     for _ in range(32):
@@ -215,10 +253,12 @@ alg = sys.argv[1]
 print('/* SPDX-License-Identifier: GPL-2.0-or-later */')
 print(f'/* This file was generated by: {sys.argv[0]} {" ".join(sys.argv[1:])} */')
 if alg.startswith('blake2'):
     gen_unkeyed_testvecs(alg)
     gen_additional_blake2_testvecs(alg)
+elif alg == 'nh':
+    gen_nh_testvecs()
 elif alg == 'poly1305':
     gen_unkeyed_testvecs(alg)
     gen_additional_poly1305_testvecs()
 elif alg == 'polyval':
     gen_unkeyed_testvecs(alg)
-- 
2.52.0