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GET /api/patches/2196092/?format=api
HTTP 200 OK
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{
    "id": 2196092,
    "url": "http://patchwork.ozlabs.org/api/patches/2196092/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260212204352.1044699-9-zycai@linux.ibm.com/",
    "project": {
        "id": 14,
        "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api",
        "name": "QEMU Development",
        "link_name": "qemu-devel",
        "list_id": "qemu-devel.nongnu.org",
        "list_email": "qemu-devel@nongnu.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": "",
        "list_archive_url": "",
        "list_archive_url_format": "",
        "commit_url_format": ""
    },
    "msgid": "<20260212204352.1044699-9-zycai@linux.ibm.com>",
    "list_archive_url": null,
    "date": "2026-02-12T20:43:29",
    "name": "[v8,08/30] crypto/x509-utils: Add helper functions for DIAG 320 subcode 2",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "6c1d21800e8bf645a385d8b193c8abd76439deff",
    "submitter": {
        "id": 90643,
        "url": "http://patchwork.ozlabs.org/api/people/90643/?format=api",
        "name": "Zhuoying Cai",
        "email": "zycai@linux.ibm.com"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260212204352.1044699-9-zycai@linux.ibm.com/mbox/",
    "series": [
        {
            "id": 492021,
            "url": "http://patchwork.ozlabs.org/api/series/492021/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=492021",
            "date": "2026-02-12T20:43:36",
            "name": "Secure IPL Support for SCSI Scheme of virtio-blk/virtio-scsi Devices",
            "version": 8,
            "mbox": "http://patchwork.ozlabs.org/series/492021/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/2196092/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/2196092/checks/",
    "tags": {},
    "related": [],
    "headers": {
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        "From": "Zhuoying Cai <zycai@linux.ibm.com>",
        "To": "thuth@redhat.com, berrange@redhat.com, richard.henderson@linaro.org,\n jrossi@linux.ibm.com, qemu-s390x@nongnu.org, qemu-devel@nongnu.org",
        "Cc": "david@kernel.org, walling@linux.ibm.com, jjherne@linux.ibm.com,\n pasic@linux.ibm.com, borntraeger@linux.ibm.com, farman@linux.ibm.com,\n mjrosato@linux.ibm.com, iii@linux.ibm.com, eblake@redhat.com,\n armbru@redhat.com, zycai@linux.ibm.com, alifm@linux.ibm.com,\n brueckner@linux.ibm.com",
        "Subject": "[PATCH v8 08/30] crypto/x509-utils: Add helper functions for DIAG 320\n subcode 2",
        "Date": "Thu, 12 Feb 2026 15:43:29 -0500",
        "Message-ID": "<20260212204352.1044699-9-zycai@linux.ibm.com>",
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    },
    "content": "Introduce new helper functions to extract certificate metadata:\n\nqcrypto_x509_check_cert_times() - validates the certificate's validity period against the current time\nqcrypto_x509_get_pk_algorithm() - returns the public key algorithm used in the certificate\nqcrypto_x509_get_cert_key_id() - extracts the key ID from the certificate\nqcrypto_x509_check_ecc_curve_p521() - determines the ECC public key algorithm uses P-521 curve\n\nThese functions provide support for metadata extraction and validity checking\nfor X.509 certificates.\n\nSigned-off-by: Zhuoying Cai <zycai@linux.ibm.com>\nReviewed-by: Farhan Ali<alifm@linux.ibm.com>\n---\n crypto/x509-utils.c         | 236 ++++++++++++++++++++++++++++++++++++\n include/crypto/x509-utils.h |  51 ++++++++\n 2 files changed, 287 insertions(+)",
    "diff": "diff --git a/crypto/x509-utils.c b/crypto/x509-utils.c\nindex 2696d48155..906d5e5e87 100644\n--- a/crypto/x509-utils.c\n+++ b/crypto/x509-utils.c\n@@ -27,6 +27,16 @@ static const int qcrypto_to_gnutls_hash_alg_map[QCRYPTO_HASH_ALGO__MAX] = {\n     [QCRYPTO_HASH_ALGO_RIPEMD160] = GNUTLS_DIG_RMD160,\n };\n \n+static const int qcrypto_to_gnutls_keyid_flags_map[] = {\n+    [QCRYPTO_HASH_ALGO_MD5] = -1,\n+    [QCRYPTO_HASH_ALGO_SHA1] = GNUTLS_KEYID_USE_SHA1,\n+    [QCRYPTO_HASH_ALGO_SHA224] = -1,\n+    [QCRYPTO_HASH_ALGO_SHA256] = GNUTLS_KEYID_USE_SHA256,\n+    [QCRYPTO_HASH_ALGO_SHA384] = -1,\n+    [QCRYPTO_HASH_ALGO_SHA512] = GNUTLS_KEYID_USE_SHA512,\n+    [QCRYPTO_HASH_ALGO_RIPEMD160] = -1,\n+};\n+\n int qcrypto_get_x509_cert_fingerprint(uint8_t *cert, size_t size,\n                                       QCryptoHashAlgo alg,\n                                       uint8_t *result,\n@@ -121,6 +131,210 @@ cleanup:\n     return ret;\n }\n \n+int qcrypto_x509_check_cert_times(uint8_t *cert, size_t size, Error **errp)\n+{\n+    int rc;\n+    int ret = -1;\n+    gnutls_x509_crt_t crt;\n+    gnutls_datum_t datum = {.data = cert, .size = size};\n+    time_t now = time(NULL);\n+    time_t exp_time;\n+    time_t act_time;\n+\n+    if (now == ((time_t)-1)) {\n+        error_setg_errno(errp, errno, \"Cannot get current time\");\n+        return ret;\n+    }\n+\n+    rc = gnutls_x509_crt_init(&crt);\n+    if (rc < 0) {\n+        error_setg(errp, \"Failed to initialize certificate: %s\", gnutls_strerror(rc));\n+        return ret;\n+    }\n+\n+    rc = gnutls_x509_crt_import(crt, &datum, GNUTLS_X509_FMT_PEM);\n+    if (rc != 0) {\n+        error_setg(errp, \"Failed to import certificate: %s\", gnutls_strerror(rc));\n+        goto cleanup;\n+    }\n+\n+    exp_time = gnutls_x509_crt_get_expiration_time(crt);\n+    if (exp_time == ((time_t)-1)) {\n+        error_setg(errp, \"Failed to get certificate expiration time\");\n+        goto cleanup;\n+    }\n+    if (exp_time < now) {\n+        error_setg(errp, \"The certificate has expired\");\n+        goto cleanup;\n+    }\n+\n+    act_time = gnutls_x509_crt_get_activation_time(crt);\n+    if (act_time == ((time_t)-1)) {\n+        error_setg(errp, \"Failed to get certificate activation time\");\n+        goto cleanup;\n+    }\n+    if (act_time > now) {\n+        error_setg(errp, \"The certificate is not yet active\");\n+        goto cleanup;\n+    }\n+\n+    ret = 0;\n+\n+cleanup:\n+    gnutls_x509_crt_deinit(crt);\n+    return ret;\n+}\n+\n+static int qcrypto_x509_get_pk_algorithm(uint8_t *cert, size_t size, Error **errp)\n+{\n+    int rc;\n+    int ret = -1;\n+    unsigned int bits;\n+    gnutls_x509_crt_t crt;\n+    gnutls_datum_t datum = {.data = cert, .size = size};\n+\n+    rc = gnutls_x509_crt_init(&crt);\n+    if (rc < 0) {\n+        error_setg(errp, \"Failed to initialize certificate: %s\", gnutls_strerror(rc));\n+        return ret;\n+    }\n+\n+    rc = gnutls_x509_crt_import(crt, &datum, GNUTLS_X509_FMT_PEM);\n+    if (rc != 0) {\n+        error_setg(errp, \"Failed to import certificate: %s\", gnutls_strerror(rc));\n+        goto cleanup;\n+    }\n+\n+    rc = gnutls_x509_crt_get_pk_algorithm(crt, &bits);\n+    if (rc < 0) {\n+        error_setg(errp, \"Unknown public key algorithm %d\", rc);\n+        goto cleanup;\n+    }\n+\n+    ret = rc;\n+\n+cleanup:\n+    gnutls_x509_crt_deinit(crt);\n+    return ret;\n+}\n+\n+int qcrypto_x509_get_cert_key_id(uint8_t *cert, size_t size,\n+                                 QCryptoHashAlgo hash_alg,\n+                                 uint8_t **result,\n+                                 size_t *resultlen,\n+                                 Error **errp)\n+{\n+    int rc;\n+    int ret = -1;\n+    gnutls_x509_crt_t crt;\n+    gnutls_datum_t datum = {.data = cert, .size = size};\n+\n+    if (hash_alg >= G_N_ELEMENTS(qcrypto_to_gnutls_hash_alg_map)) {\n+        error_setg(errp, \"Unknown hash algorithm %d\", hash_alg);\n+        return ret;\n+    }\n+\n+    if (hash_alg >= G_N_ELEMENTS(qcrypto_to_gnutls_keyid_flags_map) ||\n+        qcrypto_to_gnutls_keyid_flags_map[hash_alg] == -1) {\n+        error_setg(errp, \"Unsupported key id flag %d\", hash_alg);\n+        return ret;\n+    }\n+\n+    rc = gnutls_x509_crt_init(&crt);\n+    if (rc < 0) {\n+        error_setg(errp, \"Failed to initialize certificate: %s\", gnutls_strerror(rc));\n+        return ret;\n+    }\n+\n+    rc = gnutls_x509_crt_import(crt, &datum, GNUTLS_X509_FMT_PEM);\n+    if (rc != 0) {\n+        error_setg(errp, \"Failed to import certificate: %s\", gnutls_strerror(rc));\n+        goto cleanup;\n+    }\n+\n+    *resultlen = gnutls_hash_get_len(qcrypto_to_gnutls_hash_alg_map[hash_alg]);\n+    if (*resultlen == 0) {\n+        error_setg(errp, \"Failed to get hash algorithn length: %s\", gnutls_strerror(rc));\n+        goto cleanup;\n+    }\n+\n+    *result = g_malloc0(*resultlen);\n+    if (gnutls_x509_crt_get_key_id(crt,\n+                                   qcrypto_to_gnutls_keyid_flags_map[hash_alg],\n+                                   *result, resultlen) != 0) {\n+        error_setg(errp, \"Failed to get key ID from certificate\");\n+        g_clear_pointer(result, g_free);\n+        goto cleanup;\n+    }\n+\n+    ret = 0;\n+\n+cleanup:\n+    gnutls_x509_crt_deinit(crt);\n+    return ret;\n+}\n+\n+static int qcrypto_x509_get_ecc_curve(uint8_t *cert, size_t size, Error **errp)\n+{\n+    int rc;\n+    int ret = -1;\n+    gnutls_x509_crt_t crt;\n+    gnutls_datum_t datum = {.data = cert, .size = size};\n+    gnutls_ecc_curve_t curve_id;\n+    gnutls_datum_t x = {.data = NULL, .size = 0};\n+    gnutls_datum_t y = {.data = NULL, .size = 0};\n+\n+    rc = gnutls_x509_crt_init(&crt);\n+    if (rc < 0) {\n+        error_setg(errp, \"Failed to initialize certificate: %s\", gnutls_strerror(rc));\n+        return ret;\n+    }\n+\n+    rc = gnutls_x509_crt_import(crt, &datum, GNUTLS_X509_FMT_PEM);\n+    if (rc != 0) {\n+        error_setg(errp, \"Failed to import certificate: %s\", gnutls_strerror(rc));\n+        goto cleanup;\n+    }\n+\n+    rc = gnutls_x509_crt_get_pk_ecc_raw(crt, &curve_id, &x, &y);\n+    if (rc != 0) {\n+        error_setg(errp, \"Failed to get ECC public key curve: %s\", gnutls_strerror(rc));\n+        goto cleanup;\n+    }\n+\n+    ret = curve_id;\n+\n+cleanup:\n+    gnutls_x509_crt_deinit(crt);\n+    gnutls_free(x.data);\n+    gnutls_free(y.data);\n+    return ret;\n+}\n+\n+int qcrypto_x509_check_ecc_curve_p521(uint8_t *cert, size_t size, Error **errp)\n+{\n+    int algo;\n+    int curve_id;\n+\n+    algo = qcrypto_x509_get_pk_algorithm(cert, size, errp);\n+    if (algo != GNUTLS_PK_ECDSA) {\n+        return 0;\n+    }\n+\n+    curve_id = qcrypto_x509_get_ecc_curve(cert, size, errp);\n+    if (curve_id == -1) {\n+        error_setg(errp, \"Failed to get ECC curve\");\n+        return -1;\n+    }\n+\n+    if (curve_id == GNUTLS_ECC_CURVE_INVALID) {\n+        error_setg(errp, \"Invalid ECC curve\");\n+        return -1;\n+    }\n+\n+    return curve_id == GNUTLS_ECC_CURVE_SECP521R1;\n+}\n+\n #else /* ! CONFIG_GNUTLS */\n \n int qcrypto_get_x509_cert_fingerprint(uint8_t *cert, size_t size,\n@@ -142,4 +356,26 @@ int qcrypto_x509_convert_cert_der(uint8_t *cert, size_t size,\n     return -1;\n }\n \n+int qcrypto_x509_check_cert_times(uint8_t *cert, size_t size, Error **errp)\n+{\n+    error_setg(errp, \"GNUTLS is required to get certificate times\");\n+    return -1;\n+}\n+\n+int qcrypto_x509_get_cert_key_id(uint8_t *cert, size_t size,\n+                                 QCryptoHashAlgo hash_alg,\n+                                 uint8_t **result,\n+                                 size_t *resultlen,\n+                                 Error **errp)\n+{\n+    error_setg(errp, \"GNUTLS is required to get key ID\");\n+    return -1;\n+}\n+\n+int qcrypto_x509_check_ecc_curve_p521(uint8_t *cert, size_t size, Error **errp)\n+{\n+    error_setg(errp, \"GNUTLS is required to determine ecc curve\");\n+    return -1;\n+}\n+\n #endif /* ! CONFIG_GNUTLS */\ndiff --git a/include/crypto/x509-utils.h b/include/crypto/x509-utils.h\nindex 91ae79fb03..6040894a46 100644\n--- a/include/crypto/x509-utils.h\n+++ b/include/crypto/x509-utils.h\n@@ -40,4 +40,55 @@ int qcrypto_x509_convert_cert_der(uint8_t *cert, size_t size,\n                                   size_t *resultlen,\n                                   Error **errp);\n \n+/**\n+ * qcrypto_x509_check_cert_times\n+ * @cert: pointer to the raw certificate data\n+ * @size: size of the certificate\n+ * @errp: error pointer\n+ *\n+ * Check whether the activation and expiration times of @cert\n+ * are valid at the current time.\n+ *\n+ * Returns: 0 if the certificate times are valid,\n+ *         -1 on error.\n+ */\n+int qcrypto_x509_check_cert_times(uint8_t *cert, size_t size, Error **errp);\n+\n+/**\n+ * qcrypto_x509_get_cert_key_id\n+ * @cert: pointer to the raw certificate data\n+ * @size: size of the certificate\n+ * @hash_alg: the hash algorithm flag\n+ * @result: output location for the allocated buffer for key ID\n+ *          (the function allocates memory which must be freed by the caller)\n+ * @resultlen: pointer to the size of the buffer\n+ *             (will be updated with the actual size of key id)\n+ * @errp: error pointer\n+ *\n+ * Retrieve the key ID from the @cert based on the specified @flag.\n+ *\n+ * Returns: 0 if key ID was successfully stored in @result,\n+ *         -1 on error.\n+ */\n+int qcrypto_x509_get_cert_key_id(uint8_t *cert, size_t size,\n+                                 QCryptoHashAlgo hash_alg,\n+                                 uint8_t **result,\n+                                 size_t *resultlen,\n+                                 Error **errp);\n+\n+/**\n+ * qcrypto_x509_check_ecc_curve_p521\n+ * @cert: pointer to the raw certificate data\n+ * @size: size of the certificate\n+ * @errp: error pointer\n+ *\n+ * Determine whether the ECC public key in the given certificate uses the P-521\n+ * curve.\n+ *\n+ * Returns: 0 if ECC public key does not use P521 curve.\n+ *          1 if ECC public key uses P521 curve.\n+ *         -1 on error.\n+ */\n+int qcrypto_x509_check_ecc_curve_p521(uint8_t *cert, size_t size, Error **errp);\n+\n #endif\n",
    "prefixes": [
        "v8",
        "08/30"
    ]
}