diff options
| author | Nayna Jain <nayna@linux.ibm.com> | 2023-08-15 07:27:22 -0400 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko@kernel.org> | 2023-08-17 20:12:35 +0000 |
| commit | 44e69ea53892f18e8753943a4376de20b076c3fe (patch) | |
| tree | c20731fd41dfedd00dd77d34c0e66b0b806bfa79 /security | |
| parent | d7d91c4743c4ef0f60b7556d2794b6dd27cda373 (diff) | |
integrity: PowerVM support for loading third party code signing keys
On secure boot enabled PowerVM LPAR, third party code signing keys are
needed during early boot to verify signed third party modules. These
third party keys are stored in moduledb object in the Platform
KeyStore (PKS).
Load third party code signing keys onto .secondary_trusted_keys keyring.
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Reviewed-and-tested-by: Mimi Zohar <zohar@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/integrity/platform_certs/keyring_handler.c | 8 | ||||
| -rw-r--r-- | security/integrity/platform_certs/keyring_handler.h | 5 | ||||
| -rw-r--r-- | security/integrity/platform_certs/load_powerpc.c | 17 |
3 files changed, 30 insertions, 0 deletions
diff --git a/security/integrity/platform_certs/keyring_handler.c b/security/integrity/platform_certs/keyring_handler.c index 586027b9a3f5..13ea17207902 100644 --- a/security/integrity/platform_certs/keyring_handler.c +++ b/security/integrity/platform_certs/keyring_handler.c @@ -78,6 +78,14 @@ __init efi_element_handler_t get_handler_for_ca_keys(const efi_guid_t *sig_type) return NULL; } +__init efi_element_handler_t get_handler_for_code_signing_keys(const efi_guid_t *sig_type) +{ + if (efi_guidcmp(*sig_type, efi_cert_x509_guid) == 0) + return add_to_secondary_keyring; + + return NULL; +} + /* * Return the appropriate handler for particular signature list types found in * the UEFI dbx and MokListXRT tables. diff --git a/security/integrity/platform_certs/keyring_handler.h b/security/integrity/platform_certs/keyring_handler.h index 6f15bb4cc8dc..f92895cc50f6 100644 --- a/security/integrity/platform_certs/keyring_handler.h +++ b/security/integrity/platform_certs/keyring_handler.h @@ -35,6 +35,11 @@ efi_element_handler_t get_handler_for_mok(const efi_guid_t *sig_type); efi_element_handler_t get_handler_for_ca_keys(const efi_guid_t *sig_type); /* + * Return the handler for particular signature list types for code signing keys. + */ +efi_element_handler_t get_handler_for_code_signing_keys(const efi_guid_t *sig_type); + +/* * Return the handler for particular signature list types found in the dbx. */ efi_element_handler_t get_handler_for_dbx(const efi_guid_t *sig_type); diff --git a/security/integrity/platform_certs/load_powerpc.c b/security/integrity/platform_certs/load_powerpc.c index 339053d9726d..c85febca3343 100644 --- a/security/integrity/platform_certs/load_powerpc.c +++ b/security/integrity/platform_certs/load_powerpc.c @@ -60,6 +60,7 @@ static int __init load_powerpc_certs(void) { void *db = NULL, *dbx = NULL, *data = NULL; void *trustedca; + void *moduledb; u64 dsize = 0; u64 offset = 0; int rc = 0; @@ -137,6 +138,22 @@ static int __init load_powerpc_certs(void) kfree(data); } + data = get_cert_list("moduledb", 9, &dsize); + if (!data) { + pr_info("Couldn't get moduledb list from firmware\n"); + } else if (IS_ERR(data)) { + rc = PTR_ERR(data); + pr_err("Error reading moduledb from firmware: %d\n", rc); + } else { + extract_esl(moduledb, data, dsize, offset); + + rc = parse_efi_signature_list("powerpc:moduledb", moduledb, dsize, + get_handler_for_code_signing_keys); + if (rc) + pr_err("Couldn't parse moduledb signatures: %d\n", rc); + kfree(data); + } + return rc; } late_initcall(load_powerpc_certs); |