[LTP] [PATCH v2 22/33] keyctl29: Test KEYCTL_PKEY_QUERY on public key
Andrea Cervesato
andrea.cervesato@suse.de
Fri Sep 4 14:09:11 CEST 2026
From: Andrea Cervesato <andrea.cervesato@suse.com>
Test KEYCTL_PKEY_QUERY operation on an RSA-2048 X.509 public key
certificate: verify key_size is 2048, supported_ops contains
ENCRYPT and VERIFY, and max_enc_size/max_sig_size are 256.
Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
runtest/syscalls | 1 +
testcases/kernel/syscalls/keyctl/.gitignore | 1 +
testcases/kernel/syscalls/keyctl/keyctl29.c | 90 ++++++++++++++++++++++
testcases/kernel/syscalls/keyctl/keyctl_common.h | 20 +++++
.../kernel/syscalls/keyctl/keyctl_pkey_data.h | 68 ++++++++++++++++
5 files changed, 180 insertions(+)
diff --git a/runtest/syscalls b/runtest/syscalls
index 6fdbbea17..432369e63 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -746,6 +746,7 @@ keyctl25 keyctl25
keyctl26 keyctl26
keyctl27 keyctl27
keyctl28 keyctl28
+keyctl29 keyctl29
kcmp01 kcmp01
kcmp02 kcmp02
diff --git a/testcases/kernel/syscalls/keyctl/.gitignore b/testcases/kernel/syscalls/keyctl/.gitignore
index 139e480b3..91310b001 100644
--- a/testcases/kernel/syscalls/keyctl/.gitignore
+++ b/testcases/kernel/syscalls/keyctl/.gitignore
@@ -26,3 +26,4 @@
/keyctl26
/keyctl27
/keyctl28
+/keyctl29
diff --git a/testcases/kernel/syscalls/keyctl/keyctl29.c b/testcases/kernel/syscalls/keyctl/keyctl29.c
new file mode 100644
index 000000000..8fee5fb08
--- /dev/null
+++ b/testcases/kernel/syscalls/keyctl/keyctl29.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2026 Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+/*\
+ * Test ``KEYCTL_PKEY_QUERY`` on public key of :manpage:`keyctl(2)`.
+ *
+ * ``KEYCTL_PKEY_QUERY`` queries the parameters, operations, and buffer
+ * size limits of an asymmetric public or private key.
+ *
+ * Requires root (CAP_SYS_MODULE) to load the ``x509_key_parser`` module.
+ *
+ * [Algorithm]
+ *
+ * - query an RSA-2048 X.509 public key certificate
+ * - verify ``key_size`` is 2048 bits
+ * - verify ``supported_ops`` contains ``KEYCTL_SUPPORTS_ENCRYPT`` and
+ * ``KEYCTL_SUPPORTS_VERIFY``
+ * - verify ``max_enc_size`` is 256 bytes
+ * - verify ``max_sig_size`` is 256 bytes
+ */
+
+#include "keyctl_common.h"
+#include "keyctl_pkey_data.h"
+#include "tst_module.h"
+
+static key_serial_t cert_key;
+static struct keyctl_pkey_query *query_buf;
+
+static void setup(void)
+{
+ SAFE_KEYCTL(KEYCTL_JOIN_SESSION_KEYRING, 0, 0, 0, 0);
+
+ tst_modprobe("x509_key_parser", NULL);
+
+ cert_key = add_asymmetric_key_or_tconf("cert", rsa2048_cert,
+ sizeof(rsa2048_cert),
+ "CONFIG_X509_CERTIFICATE_PARSER");
+}
+
+static void run(void)
+{
+ memset(query_buf, 0, sizeof(*query_buf));
+
+ TST_EXP_EQ_LI_SILENT(keyctl(KEYCTL_PKEY_QUERY, (unsigned long)cert_key,
+ 0, (unsigned long)"enc=pkcs1",
+ (unsigned long)query_buf), 0);
+ if (!TST_PASS)
+ return;
+
+ TST_EXP_EQ_LU_SILENT(query_buf->key_size, 2048);
+ if (!TST_PASS)
+ return;
+
+ TST_EXP_EXPR(query_buf->supported_ops & KEYCTL_SUPPORTS_ENCRYPT,
+ "KEYCTL_PKEY_QUERY supports ENCRYPT");
+
+ TST_EXP_EXPR(query_buf->supported_ops & KEYCTL_SUPPORTS_VERIFY,
+ "KEYCTL_PKEY_QUERY supports VERIFY");
+
+ TST_EXP_EQ_LU_SILENT(query_buf->max_enc_size, 256);
+ if (!TST_PASS)
+ return;
+
+ TST_EXP_EQ_LU_SILENT(query_buf->max_sig_size, 256);
+ if (!TST_PASS)
+ return;
+
+ tst_res(TPASS, "KEYCTL_PKEY_QUERY on X.509 cert returned valid parameters");
+}
+
+static struct tst_test test = {
+ .setup = setup,
+ .test_all = run,
+ .min_kver = "4.20",
+ .needs_root = 1,
+ .needs_kconfigs = (const char *[]) {
+ "CONFIG_KEYS=y",
+ "CONFIG_ASYMMETRIC_KEY_TYPE=y",
+ "CONFIG_X509_CERTIFICATE_PARSER",
+ "CONFIG_CRYPTO_RSA",
+ "CONFIG_CRYPTO_SHA256",
+ NULL
+ },
+ .bufs = (struct tst_buffers []) {
+ {&query_buf, .size = sizeof(*query_buf)},
+ {},
+ },
+};
diff --git a/testcases/kernel/syscalls/keyctl/keyctl_common.h b/testcases/kernel/syscalls/keyctl/keyctl_common.h
index c7290cc6e..723fe228b 100644
--- a/testcases/kernel/syscalls/keyctl/keyctl_common.h
+++ b/testcases/kernel/syscalls/keyctl/keyctl_common.h
@@ -50,4 +50,24 @@ static inline key_serial_t search_ring(key_serial_t ring, const char *type,
(unsigned long)desc, 0);
}
+static inline key_serial_t add_asymmetric_key_or_tconf(const char *desc,
+ const void *payload,
+ size_t plen,
+ const char *parser_kconfig)
+{
+ TEST(add_key("asymmetric", desc, payload, plen, KEY_SPEC_PROCESS_KEYRING));
+ if (TST_RET >= 0)
+ return TST_RET;
+
+ if (TST_ERR == ENODEV)
+ tst_brk(TCONF, "kernel does not support asymmetric keys");
+ if (TST_ERR == EBADMSG)
+ tst_brk(TCONF, "missing asymmetric parser (%s)", parser_kconfig);
+ if (TST_ERR == ENOENT)
+ tst_brk(TCONF, "missing crypto RSA / SHA256 algorithms");
+
+ tst_brk(TBROK | TTERRNO, "failed to add asymmetric key '%s'", desc);
+ return -1;
+}
+
#endif /* KEYCTL_COMMON_H__ */
diff --git a/testcases/kernel/syscalls/keyctl/keyctl_pkey_data.h b/testcases/kernel/syscalls/keyctl/keyctl_pkey_data.h
new file mode 100644
index 000000000..f5e55d94e
--- /dev/null
+++ b/testcases/kernel/syscalls/keyctl/keyctl_pkey_data.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2026 Andrea Cervesato <andrea.cervesato@suse.com>
+ *
+ * Static test vectors for KEYCTL_PKEY_* tests (keyctl29..keyctl33).
+ */
+
+#ifndef KEYCTL_PKEY_DATA_H__
+#define KEYCTL_PKEY_DATA_H__
+
+/*
+ * RSA-2048 self-signed X.509 certificate in DER format generated using:
+ * openssl req -x509 -newkey rsa:2048 -subj "/CN=ltp-keyctl-pkey" -days 36500 -nodes -batch -outform der
+ */
+static const unsigned char rsa2048_cert[] = {
+ 0x30, 0x82, 0x03, 0x17, 0x30, 0x82, 0x01, 0xff, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x14, 0x52,
+ 0xd4, 0x3e, 0xcb, 0x8a, 0x14, 0xa8, 0x5b, 0x02, 0x72, 0x3b, 0x64, 0xf9, 0x9d, 0x52, 0xa3, 0xca,
+ 0x61, 0x08, 0x78, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b,
+ 0x05, 0x00, 0x30, 0x1a, 0x31, 0x18, 0x30, 0x16, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x0f, 0x6c,
+ 0x74, 0x70, 0x2d, 0x6b, 0x65, 0x79, 0x63, 0x74, 0x6c, 0x2d, 0x70, 0x6b, 0x65, 0x79, 0x30, 0x20,
+ 0x17, 0x0d, 0x32, 0x36, 0x30, 0x39, 0x30, 0x31, 0x30, 0x39, 0x31, 0x31, 0x32, 0x36, 0x5a, 0x18,
+ 0x0f, 0x32, 0x31, 0x32, 0x36, 0x30, 0x38, 0x30, 0x38, 0x30, 0x39, 0x31, 0x31, 0x32, 0x36, 0x5a,
+ 0x30, 0x1a, 0x31, 0x18, 0x30, 0x16, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x0f, 0x6c, 0x74, 0x70,
+ 0x2d, 0x6b, 0x65, 0x79, 0x63, 0x74, 0x6c, 0x2d, 0x70, 0x6b, 0x65, 0x79, 0x30, 0x82, 0x01, 0x22,
+ 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03,
+ 0x82, 0x01, 0x0f, 0x00, 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, 0x00, 0xd3, 0x97, 0x61,
+ 0x14, 0x08, 0xb7, 0xca, 0x73, 0x54, 0xd0, 0x39, 0xb9, 0xaf, 0x62, 0x12, 0xcc, 0x90, 0xde, 0x86,
+ 0xeb, 0x13, 0x91, 0x06, 0x83, 0xf3, 0x41, 0x48, 0xd7, 0xf7, 0xc5, 0x50, 0x26, 0x1f, 0x2d, 0x53,
+ 0x09, 0x43, 0x59, 0x25, 0x81, 0x04, 0x98, 0x84, 0x4c, 0x10, 0x32, 0xee, 0x63, 0x60, 0xde, 0x1a,
+ 0x76, 0x63, 0xc3, 0x5d, 0x79, 0x12, 0xf2, 0xbf, 0x33, 0xd6, 0x4c, 0xf2, 0x47, 0x56, 0x03, 0x41,
+ 0x51, 0x74, 0x7f, 0x7d, 0x80, 0x64, 0x32, 0x1c, 0x1c, 0x19, 0xac, 0x12, 0x08, 0xd6, 0xd2, 0x27,
+ 0x21, 0x6c, 0xda, 0x40, 0xea, 0x3b, 0x9c, 0x7f, 0xa8, 0xee, 0x86, 0x0a, 0x18, 0xca, 0xc3, 0xb6,
+ 0x6a, 0xe8, 0x90, 0xcc, 0xaf, 0x44, 0x1c, 0x03, 0xdd, 0x57, 0xfc, 0x67, 0xba, 0xae, 0x5b, 0x7b,
+ 0x3e, 0xc3, 0xda, 0xcc, 0xcf, 0x96, 0x90, 0xad, 0x72, 0x4d, 0x44, 0x7d, 0x46, 0xa5, 0x7c, 0x83,
+ 0x4b, 0x74, 0x5d, 0x16, 0x20, 0x33, 0x4b, 0x8a, 0xdf, 0x8b, 0x14, 0x21, 0x6f, 0xbb, 0xb3, 0xd9,
+ 0x97, 0xef, 0xd2, 0xbf, 0x4f, 0x41, 0x01, 0x86, 0x69, 0xa0, 0xe6, 0xce, 0x7b, 0xdd, 0xb9, 0x5c,
+ 0x35, 0xce, 0x2f, 0x0c, 0x5d, 0x23, 0x60, 0x71, 0xd7, 0x09, 0x05, 0x1c, 0x70, 0xb4, 0x02, 0xaf,
+ 0x75, 0xb6, 0xcd, 0x2f, 0xbf, 0xba, 0xd0, 0x35, 0xc6, 0xd0, 0x09, 0x50, 0xcf, 0xf9, 0xd9, 0xe8,
+ 0xdc, 0x3b, 0xca, 0x19, 0x45, 0x63, 0x1c, 0x88, 0xc9, 0x4c, 0xa7, 0x09, 0xe6, 0x2c, 0x7e, 0x81,
+ 0xd0, 0x06, 0xe4, 0x37, 0xb9, 0x42, 0xc9, 0x3b, 0x5c, 0xb5, 0x70, 0xc4, 0xb5, 0x20, 0x14, 0xa1,
+ 0x51, 0x37, 0xf2, 0x58, 0xa8, 0x9c, 0x11, 0xc1, 0x70, 0xe6, 0xb0, 0x45, 0xf3, 0xc5, 0x23, 0xe7,
+ 0xee, 0xa7, 0x9d, 0x9b, 0x2b, 0x81, 0xef, 0xeb, 0x63, 0xf2, 0x93, 0x15, 0x21, 0x02, 0x03, 0x01,
+ 0x00, 0x01, 0xa3, 0x53, 0x30, 0x51, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16, 0x04,
+ 0x14, 0x19, 0x69, 0xa7, 0x0c, 0x58, 0xc5, 0xd7, 0xb3, 0x0b, 0x26, 0xce, 0x2a, 0x34, 0x65, 0xae,
+ 0xa7, 0xad, 0xf6, 0xab, 0x74, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16,
+ 0x80, 0x14, 0x19, 0x69, 0xa7, 0x0c, 0x58, 0xc5, 0xd7, 0xb3, 0x0b, 0x26, 0xce, 0x2a, 0x34, 0x65,
+ 0xae, 0xa7, 0xad, 0xf6, 0xab, 0x74, 0x30, 0x0f, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x01, 0x01, 0xff,
+ 0x04, 0x05, 0x30, 0x03, 0x01, 0x01, 0xff, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,
+ 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x03, 0x82, 0x01, 0x01, 0x00, 0x01, 0x8a, 0x1b, 0x54, 0x91,
+ 0xbb, 0xf6, 0xd9, 0xc5, 0x09, 0x4c, 0x9f, 0xd2, 0x64, 0xaf, 0xcf, 0x4e, 0x45, 0xda, 0xc6, 0x31,
+ 0x0f, 0x55, 0x7d, 0xe7, 0x83, 0xa1, 0xfe, 0x51, 0x42, 0xda, 0xb4, 0x8b, 0xba, 0xf7, 0x15, 0xae,
+ 0xde, 0xf3, 0x05, 0x44, 0xb7, 0xc2, 0x40, 0x03, 0x33, 0x88, 0x2b, 0x32, 0xee, 0x13, 0x3b, 0x50,
+ 0xb4, 0x38, 0x32, 0x3b, 0xa6, 0xdf, 0x58, 0x6a, 0x46, 0x48, 0x0d, 0xbc, 0x4a, 0xbf, 0xce, 0xb5,
+ 0x98, 0x7f, 0x5c, 0xcb, 0x04, 0xa8, 0xbf, 0x7b, 0x28, 0x04, 0xcf, 0x3b, 0xaa, 0x4d, 0x16, 0xb8,
+ 0x5f, 0x0a, 0x60, 0xca, 0xde, 0xe1, 0x87, 0x1a, 0x40, 0xc1, 0x2c, 0x93, 0x29, 0x30, 0x79, 0x21,
+ 0xca, 0xa3, 0x58, 0xea, 0x8d, 0x93, 0x96, 0x17, 0x69, 0xa9, 0xaf, 0x16, 0xaf, 0x6f, 0x44, 0x6a,
+ 0x4e, 0x59, 0x9d, 0x4d, 0x8e, 0x69, 0x7a, 0x11, 0x62, 0xbc, 0x99, 0x7e, 0x8e, 0xa6, 0x70, 0x2a,
+ 0x7b, 0xbb, 0x33, 0xde, 0x81, 0x22, 0x6d, 0x7f, 0x18, 0xa6, 0x25, 0x1f, 0x84, 0x03, 0x9b, 0x8e,
+ 0x88, 0x1b, 0x5c, 0x08, 0xf8, 0xb1, 0xf1, 0x27, 0x39, 0xbb, 0x06, 0x6c, 0x54, 0xfa, 0xb9, 0x9c,
+ 0xe1, 0x5b, 0xff, 0xc1, 0xf2, 0x24, 0xf0, 0x79, 0xbd, 0xb1, 0x9f, 0xa5, 0xb8, 0x9c, 0x11, 0x96,
+ 0x6b, 0xa1, 0x05, 0x64, 0x41, 0x45, 0x56, 0xf3, 0x5b, 0x51, 0x5d, 0x7f, 0x5d, 0x50, 0x15, 0x48,
+ 0xd0, 0x68, 0x87, 0x8a, 0x39, 0x86, 0xae, 0x03, 0xdd, 0x2a, 0x7f, 0x48, 0x25, 0x7b, 0xde, 0xd4,
+ 0x8b, 0x3c, 0xba, 0x07, 0xc6, 0x53, 0xbb, 0x2b, 0x67, 0x98, 0x00, 0xc5, 0x5d, 0x38, 0xc0, 0xc4,
+ 0x51, 0x8e, 0x24, 0xc9, 0x85, 0x83, 0xb3, 0x16, 0x79, 0x7c, 0xcc, 0x76, 0xed, 0x02, 0x1f, 0x91,
+ 0x2c, 0xa7, 0x23, 0xae, 0x7b, 0xfd, 0xd5, 0x09, 0x09, 0x70, 0x28,
+};
+
+#endif /* KEYCTL_PKEY_DATA_H__ */
--
2.51.0
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