]> git.ipfire.org Git - thirdparty/systemd.git/commitdiff
test-fsprg: add unit test for FSPRG
authorYu Watanabe <watanabe.yu+github@gmail.com>
Fri, 19 Jun 2026 17:42:13 +0000 (02:42 +0900)
committerYu Watanabe <watanabe.yu+github@gmail.com>
Sat, 27 Jun 2026 15:20:38 +0000 (00:20 +0900)
src/test/meson.build
src/test/test-fsprg.c [new file with mode: 0644]

index cd54f4d8dc2f39a287beedcb9874664b0365f9e9..53ff5c3ab78c99dd82634a45987301dd981ede85 100644 (file)
@@ -336,6 +336,15 @@ executables += [
                 'link_with' : libsystemd,
                 'type' : 'manual',
         },
+        test_template + {
+                'sources' : files(
+                        'test-fsprg.c',
+                ),
+                'dependencies' : [
+                        libgcrypt_cflags,
+                ],
+                'conditions' : ['HAVE_GCRYPT'],
+        },
         test_template + {
                 'sources' : files(
                         'test-hashmap.c',
diff --git a/src/test/test-fsprg.c b/src/test/test-fsprg.c
new file mode 100644 (file)
index 0000000..07c758f
--- /dev/null
@@ -0,0 +1,413 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#if HAVE_VALGRIND_VALGRIND_H
+#  include <valgrind/valgrind.h>
+#endif
+
+#include "fsprg.h"
+#include "gcrypt-util.h"
+#include "iovec-util.h"
+#include "journal-def.h"
+#include "stdio-util.h"
+#include "tests.h"
+
+#define STATE_LENGTH (2 + 2 * FSPRG_RECOMMENDED_SECPAR / 8 + 8)
+#define KEY_LENGTH 32
+
+static const uint8_t expected_state[4][STATE_LENGTH] = {
+        {
+                0x00, 0x5f, 0xcd, 0x65, 0x12, 0x14, 0xa6, 0x15,
+                0xe4, 0xd3, 0xc9, 0xe7, 0x5c, 0x70, 0x2c, 0x37,
+                0xca, 0xa7, 0x21, 0xf4, 0x40, 0xf3, 0x6a, 0x88,
+                0xe3, 0xce, 0x85, 0x9b, 0xe4, 0x8f, 0x90, 0x8c,
+                0x4a, 0xad, 0xf4, 0xcf, 0x99, 0xcf, 0xdc, 0x3b,
+                0x29, 0xad, 0x59, 0x72, 0x05, 0xa3, 0xca, 0x3e,
+                0xf9, 0x72, 0x9f, 0x7c, 0xb6, 0xa4, 0xd6, 0x86,
+                0xb4, 0x64, 0x5a, 0xc4, 0xe0, 0x95, 0x98, 0xb7,
+                0xdf, 0xc5, 0x79, 0x8a, 0x48, 0xff, 0xd6, 0x71,
+                0xab, 0x0f, 0x17, 0x54, 0xdd, 0x3d, 0xd0, 0x23,
+                0x18, 0xc9, 0x4c, 0xf4, 0x40, 0xcf, 0x34, 0xc9,
+                0x33, 0x04, 0x35, 0x4b, 0x2c, 0xd9, 0xbd, 0xcf,
+                0x59, 0x62, 0x18, 0x2d, 0x9e, 0x5a, 0x11, 0x71,
+                0x4c, 0x1f, 0x78, 0x0e, 0x65, 0x75, 0xe6, 0x15,
+                0x2f, 0x61, 0x32, 0x3c, 0xac, 0xaa, 0xa8, 0x6a,
+                0x1d, 0x11, 0xb4, 0x91, 0x38, 0xd3, 0x34, 0x31,
+                0xd7, 0xfa, 0xff, 0xef, 0xbf, 0xb9, 0x90, 0x4f,
+                0x0d, 0x29, 0x16, 0xb6, 0x64, 0x48, 0x5b, 0x7b,
+                0x00, 0x42, 0x7a, 0xab, 0x2b, 0xe7, 0xee, 0x9b,
+                0x5d, 0x0c, 0xe9, 0x14, 0x74, 0x72, 0x29, 0xd9,
+                0x10, 0xa5, 0xd5, 0x95, 0xbb, 0x9f, 0x85, 0xc0,
+                0xa2, 0xfa, 0xbb, 0x84, 0xf5, 0x59, 0x11, 0xdb,
+                0xf4, 0xce, 0x08, 0xe4, 0x36, 0x1c, 0xeb, 0xc9,
+                0xa6, 0xcd, 0xdb, 0xf2, 0x10, 0xab, 0x51, 0xb2,
+                0x8c, 0x9d, 0xc9, 0xf8, 0x35, 0xe1, 0xec, 0x25,
+                0xd5, 0xca, 0x98, 0x7a, 0x4f, 0xbd, 0x45, 0x50,
+                0xbf, 0xff, 0x1c, 0xd8, 0x42, 0x95, 0xcb, 0xc5,
+                0xa7, 0x0f, 0x75, 0xda, 0x6d, 0x5b, 0xa2, 0xeb,
+                0x5b, 0x26, 0x9e, 0xe8, 0xa3, 0x23, 0x04, 0x4b,
+                0x5b, 0x26, 0xb7, 0xe4, 0x7f, 0xcd, 0x82, 0x66,
+                0x23, 0x7d, 0xf8, 0x57, 0x2c, 0x22, 0x0b, 0x7e,
+                0x87, 0x3f, 0xe1, 0xc1, 0x1a, 0xea, 0xc3, 0x42,
+                0x40, 0x03, 0xaf, 0x11, 0xd5, 0x07, 0xa1, 0x79,
+                0x55, 0x34, 0x4a, 0x41, 0x6a, 0x75, 0x68, 0x13,
+                0x37, 0xfd, 0x38, 0x97, 0x52, 0x4f, 0xbb, 0x68,
+                0xb4, 0x9f, 0xa8, 0xda, 0x9c, 0x4c, 0x8e, 0x65,
+                0x3e, 0x42, 0x19, 0x40, 0x5f, 0x47, 0xe8, 0x50,
+                0x0c, 0xb3, 0xc5, 0x6e, 0x0e, 0xe6, 0x6b, 0xe7,
+                0xb9, 0x1f, 0xe0, 0x66, 0x2a, 0x38, 0x8e, 0x38,
+                0xa8, 0x7f, 0xfd, 0x2c, 0x92, 0xf8, 0xf2, 0x91,
+                0x36, 0x90, 0xfd, 0x14, 0x1d, 0x07, 0xae, 0x71,
+                0x7f, 0x3c, 0xaa, 0xd6, 0xc4, 0x10, 0x20, 0xe5,
+                0xd0, 0xc2, 0xa2, 0xe7, 0x5e, 0x36, 0x91, 0xf7,
+                0xff, 0x27, 0x4e, 0x81, 0xc0, 0x85, 0xab, 0x0a,
+                0x46, 0x88, 0xe7, 0x32, 0xce, 0x83, 0x4a, 0x09,
+                0x72, 0xb3, 0xae, 0xdd, 0x65, 0xf8, 0x13, 0xd0,
+                0x9f, 0x4f, 0x45, 0x83, 0xfa, 0x41, 0x1f, 0x8d,
+                0xfe, 0x96, 0xbd, 0xe0, 0x32, 0x5c, 0xb9, 0x87,
+                0xd8, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x00, 0x00,
+        },
+        {
+                0x00, 0x5f, 0xcd, 0x65, 0x12, 0x14, 0xa6, 0x15,
+                0xe4, 0xd3, 0xc9, 0xe7, 0x5c, 0x70, 0x2c, 0x37,
+                0xca, 0xa7, 0x21, 0xf4, 0x40, 0xf3, 0x6a, 0x88,
+                0xe3, 0xce, 0x85, 0x9b, 0xe4, 0x8f, 0x90, 0x8c,
+                0x4a, 0xad, 0xf4, 0xcf, 0x99, 0xcf, 0xdc, 0x3b,
+                0x29, 0xad, 0x59, 0x72, 0x05, 0xa3, 0xca, 0x3e,
+                0xf9, 0x72, 0x9f, 0x7c, 0xb6, 0xa4, 0xd6, 0x86,
+                0xb4, 0x64, 0x5a, 0xc4, 0xe0, 0x95, 0x98, 0xb7,
+                0xdf, 0xc5, 0x79, 0x8a, 0x48, 0xff, 0xd6, 0x71,
+                0xab, 0x0f, 0x17, 0x54, 0xdd, 0x3d, 0xd0, 0x23,
+                0x18, 0xc9, 0x4c, 0xf4, 0x40, 0xcf, 0x34, 0xc9,
+                0x33, 0x04, 0x35, 0x4b, 0x2c, 0xd9, 0xbd, 0xcf,
+                0x59, 0x62, 0x18, 0x2d, 0x9e, 0x5a, 0x11, 0x71,
+                0x4c, 0x1f, 0x78, 0x0e, 0x65, 0x75, 0xe6, 0x15,
+                0x2f, 0x61, 0x32, 0x3c, 0xac, 0xaa, 0xa8, 0x6a,
+                0x1d, 0x11, 0xb4, 0x91, 0x38, 0xd3, 0x34, 0x31,
+                0xd7, 0xfa, 0xff, 0xef, 0xbf, 0xb9, 0x90, 0x4f,
+                0x0d, 0x29, 0x16, 0xb6, 0x64, 0x48, 0x5b, 0x7b,
+                0x00, 0x42, 0x7a, 0xab, 0x2b, 0xe7, 0xee, 0x9b,
+                0x5d, 0x0c, 0xe9, 0x14, 0x74, 0x72, 0x29, 0xd9,
+                0x10, 0xa5, 0xd5, 0x95, 0xbb, 0x9f, 0x85, 0xc0,
+                0xa2, 0xfa, 0xbb, 0x84, 0xf5, 0x59, 0x11, 0xdb,
+                0xf4, 0xce, 0x08, 0xe4, 0x36, 0x1c, 0xeb, 0xc9,
+                0xa6, 0xcd, 0xdb, 0xf2, 0x10, 0xab, 0x51, 0xb2,
+                0x8c, 0x9d, 0x4a, 0x62, 0x5d, 0xd1, 0x34, 0x5b,
+                0x56, 0x44, 0x04, 0x10, 0x9e, 0x43, 0x7f, 0x62,
+                0x18, 0x1f, 0x5d, 0x68, 0x8f, 0xa8, 0x26, 0xab,
+                0xd4, 0xf9, 0xa6, 0xef, 0xfa, 0x3f, 0x41, 0x09,
+                0xae, 0x44, 0x8f, 0x9e, 0xd3, 0x4c, 0xc5, 0x7b,
+                0x35, 0x50, 0x7f, 0xc0, 0xba, 0xd9, 0x42, 0xe9,
+                0x89, 0x9b, 0x4f, 0x30, 0x40, 0x02, 0x96, 0xed,
+                0x7c, 0x67, 0x7e, 0xab, 0x26, 0x3b, 0xc9, 0x65,
+                0xf6, 0x16, 0x9b, 0x7e, 0x28, 0xf2, 0xed, 0xb9,
+                0xfd, 0x9d, 0xe4, 0x68, 0x67, 0x65, 0xf2, 0x5d,
+                0x54, 0x43, 0xd5, 0x2d, 0xfd, 0xf4, 0x2d, 0xfd,
+                0x49, 0x00, 0xca, 0x35, 0xc9, 0x87, 0x7c, 0xd4,
+                0xfe, 0xfb, 0x9d, 0x8d, 0xda, 0x1c, 0x54, 0xc2,
+                0x26, 0xed, 0xe5, 0xaa, 0xde, 0xa9, 0x41, 0x88,
+                0x88, 0xec, 0x17, 0xab, 0x12, 0x00, 0xc4, 0x71,
+                0x8f, 0xe4, 0x5a, 0xf9, 0x55, 0xe6, 0xd9, 0x56,
+                0x45, 0x86, 0x6a, 0x1c, 0xd1, 0x09, 0xb1, 0xfc,
+                0x0d, 0xd0, 0x15, 0x2c, 0xa1, 0xb6, 0xe9, 0x95,
+                0x01, 0xe1, 0x71, 0xb3, 0xb7, 0xbf, 0x57, 0xd5,
+                0x15, 0xec, 0xe7, 0xde, 0x85, 0x90, 0xb2, 0x47,
+                0x51, 0x0f, 0x0f, 0x9b, 0xcf, 0x21, 0x0c, 0x77,
+                0x21, 0xe7, 0xbb, 0x44, 0xbb, 0x70, 0xbf, 0xfb,
+                0x29, 0x58, 0x50, 0xdc, 0x01, 0xfb, 0x2b, 0xdf,
+                0x8d, 0x74, 0xc5, 0x89, 0xe1, 0x29, 0xcd, 0x97,
+                0xe5, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x00, 0x01,
+        },
+        {
+                0x00, 0x5f, 0xcd, 0x65, 0x12, 0x14, 0xa6, 0x15,
+                0xe4, 0xd3, 0xc9, 0xe7, 0x5c, 0x70, 0x2c, 0x37,
+                0xca, 0xa7, 0x21, 0xf4, 0x40, 0xf3, 0x6a, 0x88,
+                0xe3, 0xce, 0x85, 0x9b, 0xe4, 0x8f, 0x90, 0x8c,
+                0x4a, 0xad, 0xf4, 0xcf, 0x99, 0xcf, 0xdc, 0x3b,
+                0x29, 0xad, 0x59, 0x72, 0x05, 0xa3, 0xca, 0x3e,
+                0xf9, 0x72, 0x9f, 0x7c, 0xb6, 0xa4, 0xd6, 0x86,
+                0xb4, 0x64, 0x5a, 0xc4, 0xe0, 0x95, 0x98, 0xb7,
+                0xdf, 0xc5, 0x79, 0x8a, 0x48, 0xff, 0xd6, 0x71,
+                0xab, 0x0f, 0x17, 0x54, 0xdd, 0x3d, 0xd0, 0x23,
+                0x18, 0xc9, 0x4c, 0xf4, 0x40, 0xcf, 0x34, 0xc9,
+                0x33, 0x04, 0x35, 0x4b, 0x2c, 0xd9, 0xbd, 0xcf,
+                0x59, 0x62, 0x18, 0x2d, 0x9e, 0x5a, 0x11, 0x71,
+                0x4c, 0x1f, 0x78, 0x0e, 0x65, 0x75, 0xe6, 0x15,
+                0x2f, 0x61, 0x32, 0x3c, 0xac, 0xaa, 0xa8, 0x6a,
+                0x1d, 0x11, 0xb4, 0x91, 0x38, 0xd3, 0x34, 0x31,
+                0xd7, 0xfa, 0xff, 0xef, 0xbf, 0xb9, 0x90, 0x4f,
+                0x0d, 0x29, 0x16, 0xb6, 0x64, 0x48, 0x5b, 0x7b,
+                0x00, 0x42, 0x7a, 0xab, 0x2b, 0xe7, 0xee, 0x9b,
+                0x5d, 0x0c, 0xe9, 0x14, 0x74, 0x72, 0x29, 0xd9,
+                0x10, 0xa5, 0xd5, 0x95, 0xbb, 0x9f, 0x85, 0xc0,
+                0xa2, 0xfa, 0xbb, 0x84, 0xf5, 0x59, 0x11, 0xdb,
+                0xf4, 0xce, 0x08, 0xe4, 0x36, 0x1c, 0xeb, 0xc9,
+                0xa6, 0xcd, 0xdb, 0xf2, 0x10, 0xab, 0x51, 0xb2,
+                0x8c, 0x9d, 0x57, 0xb9, 0x1b, 0x5d, 0x82, 0x02,
+                0x77, 0x8c, 0x96, 0x3e, 0x36, 0x0c, 0x17, 0x8f,
+                0x61, 0x3b, 0x3f, 0x17, 0x7d, 0x1d, 0xa9, 0x03,
+                0xf8, 0x57, 0x4b, 0xf7, 0x48, 0xb8, 0x65, 0xfc,
+                0xbb, 0xd4, 0x2b, 0x19, 0x06, 0xa3, 0x82, 0x61,
+                0xe0, 0x21, 0x62, 0x31, 0xb4, 0xd2, 0x5b, 0xf0,
+                0x4b, 0x21, 0xcd, 0xca, 0x84, 0x84, 0xc0, 0x1b,
+                0x55, 0x4d, 0xf0, 0x32, 0xc9, 0x37, 0x57, 0xd9,
+                0x63, 0x1b, 0x00, 0x65, 0x61, 0x93, 0x1d, 0xa4,
+                0xb0, 0x86, 0xef, 0x4f, 0x15, 0x88, 0xf8, 0x58,
+                0xcd, 0xfb, 0xc6, 0x2b, 0x09, 0xcd, 0x9a, 0x32,
+                0x44, 0x97, 0x8e, 0xea, 0xfa, 0x3c, 0x5a, 0x7d,
+                0x94, 0xda, 0x09, 0x94, 0x27, 0xa0, 0xc5, 0x57,
+                0xa8, 0x2d, 0xc5, 0xc4, 0xdf, 0x7c, 0x5f, 0xb4,
+                0x9b, 0x27, 0x0b, 0x62, 0xc1, 0x55, 0xcc, 0x55,
+                0xb6, 0xfa, 0xf8, 0x70, 0x66, 0x48, 0xba, 0x21,
+                0xe5, 0x9c, 0x27, 0x3f, 0x6b, 0xc5, 0xf3, 0x00,
+                0x03, 0x52, 0x90, 0x06, 0xa3, 0xb9, 0xda, 0xee,
+                0x87, 0xab, 0x78, 0x96, 0x93, 0x69, 0x34, 0x5a,
+                0x04, 0x77, 0xcf, 0x0d, 0x20, 0xa3, 0xd7, 0x42,
+                0x27, 0x8d, 0x59, 0xfe, 0x89, 0x67, 0x3e, 0x5d,
+                0xe0, 0x0c, 0xb6, 0xad, 0xf0, 0x36, 0x09, 0x60,
+                0xc1, 0x7c, 0xce, 0x2d, 0xe4, 0x75, 0xaa, 0xf5,
+                0xa3, 0x5f, 0x72, 0x3b, 0xf2, 0x73, 0xb4, 0x9b,
+                0xb5, 0x26, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x00, 0x02,
+        },
+        {
+                0x00, 0x5f, 0xcd, 0x65, 0x12, 0x14, 0xa6, 0x15,
+                0xe4, 0xd3, 0xc9, 0xe7, 0x5c, 0x70, 0x2c, 0x37,
+                0xca, 0xa7, 0x21, 0xf4, 0x40, 0xf3, 0x6a, 0x88,
+                0xe3, 0xce, 0x85, 0x9b, 0xe4, 0x8f, 0x90, 0x8c,
+                0x4a, 0xad, 0xf4, 0xcf, 0x99, 0xcf, 0xdc, 0x3b,
+                0x29, 0xad, 0x59, 0x72, 0x05, 0xa3, 0xca, 0x3e,
+                0xf9, 0x72, 0x9f, 0x7c, 0xb6, 0xa4, 0xd6, 0x86,
+                0xb4, 0x64, 0x5a, 0xc4, 0xe0, 0x95, 0x98, 0xb7,
+                0xdf, 0xc5, 0x79, 0x8a, 0x48, 0xff, 0xd6, 0x71,
+                0xab, 0x0f, 0x17, 0x54, 0xdd, 0x3d, 0xd0, 0x23,
+                0x18, 0xc9, 0x4c, 0xf4, 0x40, 0xcf, 0x34, 0xc9,
+                0x33, 0x04, 0x35, 0x4b, 0x2c, 0xd9, 0xbd, 0xcf,
+                0x59, 0x62, 0x18, 0x2d, 0x9e, 0x5a, 0x11, 0x71,
+                0x4c, 0x1f, 0x78, 0x0e, 0x65, 0x75, 0xe6, 0x15,
+                0x2f, 0x61, 0x32, 0x3c, 0xac, 0xaa, 0xa8, 0x6a,
+                0x1d, 0x11, 0xb4, 0x91, 0x38, 0xd3, 0x34, 0x31,
+                0xd7, 0xfa, 0xff, 0xef, 0xbf, 0xb9, 0x90, 0x4f,
+                0x0d, 0x29, 0x16, 0xb6, 0x64, 0x48, 0x5b, 0x7b,
+                0x00, 0x42, 0x7a, 0xab, 0x2b, 0xe7, 0xee, 0x9b,
+                0x5d, 0x0c, 0xe9, 0x14, 0x74, 0x72, 0x29, 0xd9,
+                0x10, 0xa5, 0xd5, 0x95, 0xbb, 0x9f, 0x85, 0xc0,
+                0xa2, 0xfa, 0xbb, 0x84, 0xf5, 0x59, 0x11, 0xdb,
+                0xf4, 0xce, 0x08, 0xe4, 0x36, 0x1c, 0xeb, 0xc9,
+                0xa6, 0xcd, 0xdb, 0xf2, 0x10, 0xab, 0x51, 0xb2,
+                0x8c, 0x9d, 0x24, 0x8b, 0xa0, 0xb7, 0xf0, 0xd8,
+                0xea, 0x6e, 0x24, 0x61, 0x57, 0xfa, 0xd8, 0xd3,
+                0xf8, 0x10, 0xaf, 0x7e, 0x45, 0xc5, 0xea, 0x7d,
+                0xa4, 0x0d, 0x14, 0x2b, 0x4c, 0xc9, 0x64, 0x48,
+                0x12, 0xf1, 0x36, 0x2d, 0xef, 0x33, 0xb6, 0x74,
+                0x4c, 0xdf, 0xd5, 0x59, 0x80, 0xa4, 0xfc, 0xa5,
+                0x7c, 0x09, 0x24, 0xd7, 0xd5, 0xdf, 0xd6, 0xa5,
+                0x2f, 0xa3, 0x49, 0x8a, 0xa3, 0x23, 0xa6, 0x11,
+                0x76, 0x0e, 0xe3, 0xcd, 0xd7, 0x64, 0x0f, 0xbe,
+                0x3f, 0x99, 0x0d, 0x05, 0x14, 0xd7, 0xa8, 0x2b,
+                0x79, 0x6d, 0xb3, 0x12, 0x76, 0x93, 0xae, 0x35,
+                0xbe, 0x81, 0xb7, 0xd2, 0xcf, 0x39, 0xd2, 0xad,
+                0xb9, 0xc4, 0x3f, 0xfb, 0xe2, 0xc3, 0x32, 0x46,
+                0x4d, 0x0b, 0x84, 0x8a, 0x2c, 0x77, 0x2f, 0x49,
+                0xac, 0x96, 0xe0, 0x30, 0xeb, 0x38, 0x8f, 0x2f,
+                0x01, 0x1b, 0xf3, 0x3c, 0xb5, 0xee, 0x8c, 0x62,
+                0x9c, 0x9d, 0x0d, 0xb4, 0x57, 0x6c, 0x8d, 0xf5,
+                0xe2, 0x16, 0xc0, 0x62, 0x9c, 0x52, 0x49, 0xf8,
+                0xc7, 0xac, 0xb0, 0xa0, 0xe8, 0x81, 0xd9, 0x05,
+                0x87, 0xda, 0x09, 0x6f, 0xf7, 0x95, 0xc7, 0x68,
+                0x69, 0xbb, 0x68, 0xf4, 0x76, 0x3e, 0x2f, 0xd1,
+                0x9d, 0x18, 0xc1, 0x47, 0x59, 0x3d, 0x56, 0x57,
+                0x26, 0x10, 0x64, 0xc5, 0x9c, 0x35, 0xe8, 0x58,
+                0x1b, 0x0e, 0x20, 0x97, 0xdf, 0xfa, 0xcc, 0x88,
+                0xa0, 0xeb, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x00, 0x03,
+        },
+}, expected_key[4][KEY_LENGTH] = {
+        {
+                0xca, 0xe4, 0x2e, 0xba, 0x74, 0x55, 0x4f, 0x10,
+                0x4f, 0x72, 0xa4, 0x3a, 0x0b, 0x00, 0xa0, 0xc8,
+                0xd8, 0x8f, 0xa7, 0x11, 0x8d, 0x56, 0x2a, 0x72,
+                0xe4, 0xa8, 0xd2, 0x69, 0xf9, 0xd8, 0xa0, 0xf1,
+        },
+        {
+                0x63, 0x1d, 0x52, 0x11, 0xed, 0x13, 0xa8, 0x8e,
+                0x4c, 0xe0, 0x06, 0x2e, 0xe6, 0xa3, 0xa1, 0xf6,
+                0x7a, 0xf1, 0xc4, 0x1e, 0x18, 0xbf, 0x74, 0xe2,
+                0x52, 0x23, 0x86, 0x56, 0x1b, 0x0e, 0x78, 0x7d,
+        },
+        {
+                0x3f, 0xb2, 0xb6, 0x39, 0xe3, 0x54, 0x41, 0x04,
+                0xf3, 0x48, 0x5f, 0x50, 0xf7, 0x8b, 0xd6, 0xe7,
+                0x8e, 0x45, 0xc2, 0xee, 0xbf, 0xdd, 0xfd, 0x83,
+                0x34, 0x7a, 0x9a, 0x8a, 0xf3, 0x4d, 0xd4, 0xc6,
+        },
+        {
+                0x98, 0x76, 0x29, 0xe2, 0x27, 0xf0, 0x0e, 0x2a,
+                0xff, 0xc8, 0xfd, 0x3b, 0xcf, 0xcb, 0x9f, 0x6d,
+                0xe9, 0x80, 0xfe, 0x6e, 0xd9, 0xc0, 0x43, 0x29,
+                0xc5, 0x53, 0x5f, 0xf7, 0x86, 0x33, 0x3b, 0x70,
+        },
+}, expected_tag[4][TAG_LENGTH] = {
+        {
+                0x10, 0xa4, 0x14, 0x19, 0xec, 0xf1, 0x9b, 0x6d,
+                0xe5, 0xe3, 0x12, 0x2b, 0x06, 0xee, 0x5b, 0xac,
+                0xa7, 0x11, 0x0b, 0x70, 0x15, 0xfd, 0x47, 0xa4,
+                0xb9, 0xd7, 0x45, 0x19, 0x4b, 0xde, 0x92, 0x5d,
+        },
+        {
+                0x75, 0x54, 0x5b, 0x6a, 0xfb, 0x30, 0x43, 0x3b,
+                0x29, 0x94, 0x58, 0xee, 0x62, 0xd9, 0x62, 0x2b,
+                0x61, 0x88, 0xed, 0xce, 0xc9, 0x95, 0x1e, 0x82,
+                0x9e, 0xd6, 0xd1, 0x90, 0x23, 0xc6, 0x90, 0x65,
+        },
+        {
+                0x2f, 0x8b, 0x64, 0xa4, 0x21, 0xe8, 0x74, 0x93,
+                0xa2, 0x3a, 0x6a, 0xa9, 0x0d, 0x7e, 0xb0, 0x80,
+                0xce, 0x74, 0x80, 0xb9, 0x06, 0xae, 0xec, 0x86,
+                0x4c, 0x32, 0x99, 0xf9, 0x48, 0x1f, 0x0c, 0xad,
+        },
+        {
+                0x39, 0x9e, 0xf6, 0xc3, 0x1e, 0xca, 0x02, 0xb2,
+                0x6a, 0xe2, 0xa6, 0x47, 0x0b, 0xb5, 0xb6, 0xaf,
+                0x46, 0xd7, 0x99, 0x13, 0xc6, 0x07, 0xa8, 0x80,
+                0x73, 0x35, 0x75, 0x73, 0xfd, 0x03, 0x5b, 0x3e,
+        },
+};
+
+static void generate_seed(struct iovec *seed) {
+        assert(iovec_is_set(seed));
+
+        uint8_t *p = seed->iov_base;
+        for (size_t i = 0; i < seed->iov_len; i++)
+                *p++ = (uint8_t) i;
+}
+
+TEST(fsprg) {
+        size_t n_states = 20;
+
+        /* Generating private keys is slow when running on valgrind or with sanitizers. */
+#if HAVE_VALGRIND_VALGRIND_H
+        if (RUNNING_ON_VALGRIND)
+                n_states = ELEMENTSOF(expected_state);
+#endif
+#if HAS_FEATURE_ADDRESS_SANITIZER
+        n_states = ELEMENTSOF(expected_state);
+#endif
+
+        struct iovec *states = new0(struct iovec, n_states);
+        CLEANUP_ARRAY(states, n_states, iovec_array_free);
+
+        if (initialize_libgcrypt(false) >= 0) {
+                struct iovec seed = IOVEC_ALLOCA(FSPRG_RECOMMENDED_SEEDLEN),
+                        msk = IOVEC_ALLOCA(FSPRG_mskinbytes(FSPRG_RECOMMENDED_SECPAR)),
+                        mpk = IOVEC_ALLOCA(FSPRG_mpkinbytes(FSPRG_RECOMMENDED_SECPAR)),
+                        state = IOVEC_ALLOCA(FSPRG_stateinbytes(FSPRG_RECOMMENDED_SECPAR)),
+                        key = IOVEC_ALLOCA(KEY_LENGTH);
+
+                generate_seed(&seed);
+
+                /* Generate secret keys */
+                ASSERT_OK(FSPRG_GenMK(msk.iov_base, mpk.iov_base, seed.iov_base, seed.iov_len, FSPRG_RECOMMENDED_SECPAR));
+
+                /* Generate states by FSPRG_Seek() */
+                for (size_t i = 0; i < n_states; i++) {
+                        ASSERT_OK(FSPRG_Seek(state.iov_base, i, msk.iov_base, seed.iov_base, seed.iov_len));
+
+                        /* Verify state */
+                        if (i < ELEMENTSOF(expected_state))
+                                ASSERT_TRUE(iovec_equal(&state, &IOVEC_MAKE(expected_state[i], sizeof(expected_state[i]))));
+
+                        /* Verify key */
+                        ASSERT_OK(FSPRG_GetKey(state.iov_base, key.iov_base, key.iov_len, 0));
+                        if (i < ELEMENTSOF(expected_key))
+                                ASSERT_TRUE(iovec_equal(&key, &IOVEC_MAKE(expected_key[i], sizeof(expected_key[i]))));
+
+                        /* Verify epoch */
+                        ASSERT_EQ(FSPRG_GetEpoch(state.iov_base), (uint64_t) i);
+
+                        ASSERT_NOT_NULL(iovec_memdup(&state, &states[i]));
+                }
+
+                /* Generate state by FSPRG_GetState0() */
+                ASSERT_OK(FSPRG_GenState0(state.iov_base, mpk.iov_base, seed.iov_base, seed.iov_len));
+                ASSERT_TRUE(iovec_equal(&state, &states[0]));
+
+                /* Generate states by FSPRG_Evolve() */
+                for (size_t i = 1; i < n_states; i++) {
+                        ASSERT_OK(FSPRG_Evolve(state.iov_base));
+                        ASSERT_TRUE(iovec_equal(&state, &states[i]));
+                }
+        }
+}
+
+TEST(hmac) {
+        /* This emulates what journald and journalctl does.
+         * 1. journalctl generates random seed, calculate initial state, and write the state in
+         *    /var/log/journal/$MACHINE_ID/fss.
+         * 2. journald loads the fss file when a new journal file is created by journal_file_fss_load().
+         * 3. Allocate HMAC with SHA256 by journal_file_hmac_setup().
+         * 4. Write inital tag in journal file by journal_file_append_first_tag().
+         * 5. For each journal entry,
+         *    - initialize HMAC with fsprg key by journal_file_hmac_start(),
+         *    - put each object data to the HMAC by journal_file_hmac_put_object(),
+         *    - finalize HMAC and write the value with the fsprg epoch to a tag object by
+         *      journal_file_maybe_append_tag(). */
+
+        size_t n_tags = 20;
+
+#if HAVE_GCRYPT
+        if (initialize_libgcrypt(false) >= 0) {
+                struct iovec seed = IOVEC_ALLOCA(FSPRG_RECOMMENDED_SEEDLEN),
+                        msk = IOVEC_ALLOCA(FSPRG_mskinbytes(FSPRG_RECOMMENDED_SECPAR)),
+                        mpk = IOVEC_ALLOCA(FSPRG_mpkinbytes(FSPRG_RECOMMENDED_SECPAR)),
+                        state = IOVEC_ALLOCA(FSPRG_stateinbytes(FSPRG_RECOMMENDED_SECPAR)),
+                        key = IOVEC_ALLOCA(KEY_LENGTH),
+                        tag = IOVEC_ALLOCA(TAG_LENGTH);
+
+                generate_seed(&seed);
+
+                /* Generate secret keys */
+                ASSERT_OK(FSPRG_GenMK(msk.iov_base, mpk.iov_base, seed.iov_base, seed.iov_len, FSPRG_RECOMMENDED_SECPAR));
+
+                /* Calculate initial state */
+                ASSERT_OK(FSPRG_GenState0(state.iov_base, mpk.iov_base, seed.iov_base, seed.iov_len));
+
+                /* Allocate HMAC */
+                _cleanup_(sym_gcry_md_closep) gcry_md_hd_t hmac = NULL;
+                ASSERT_EQ(gcry_err_code(sym_gcry_md_open(&hmac, GCRY_MD_SHA256, GCRY_MD_FLAG_HMAC)), (gcry_err_code_t) GPG_ERR_NO_ERROR);
+
+                for (size_t i = 0; i < n_tags; i++) {
+                        /* Reset the previous state */
+                        sym_gcry_md_reset(hmac);
+
+                        /* Initialize HMAC with fsprg key */
+                        ASSERT_OK(FSPRG_GetKey(state.iov_base, key.iov_base, key.iov_len, 0));
+                        ASSERT_EQ(gcry_err_code(sym_gcry_md_setkey(hmac, key.iov_base, key.iov_len)), (gcry_err_code_t) GPG_ERR_NO_ERROR);
+
+                        /* Put dummy data */
+                        _cleanup_free_ char *str = ASSERT_NOT_NULL(asprintf_safe("dummy data: %zu, hoge hoge hoge hoge hoge", i));
+                        sym_gcry_md_write(hmac, str, strlen(str));
+
+                        /* Finalize HMAC and generate tag. */
+                        memcpy(tag.iov_base, sym_gcry_md_read(hmac, 0), tag.iov_len);
+
+                        /* Verify tag */
+                        if (i < ELEMENTSOF(expected_tag))
+                                ASSERT_TRUE(iovec_equal(&tag, &IOVEC_MAKE(expected_tag[i], sizeof(expected_tag[i]))));
+
+                        /* Increment epoch */
+                        ASSERT_OK(FSPRG_Evolve(state.iov_base));
+                }
+        }
+#endif
+}
+
+static int intro(void) {
+        if (DLOPEN_GCRYPT(LOG_DEBUG, SD_ELF_NOTE_DLOPEN_PRIORITY_RECOMMENDED) < 0)
+                return EXIT_TEST_SKIP;
+
+        return EXIT_SUCCESS;
+}
+
+DEFINE_TEST_MAIN_WITH_INTRO(LOG_DEBUG, intro);