Linux/security/integrity/ima/Kconfig

Version: ~ [ linux-6.12-rc7 ] ~ [ linux-6.11.7 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.60 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.116 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.171 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.229 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.285 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.323 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.12 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

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1 # SPDX-License-Identifier: GPL-2.0-only << 2 # IBM Integrity Measurement Architecture 1 # IBM Integrity Measurement Architecture 3 # 2 # 4 config IMA 3 config IMA 5 bool "Integrity Measurement Architectu 4 bool "Integrity Measurement Architecture(IMA)" 6 select SECURITYFS 5 select SECURITYFS 7 select CRYPTO 6 select CRYPTO 8 select CRYPTO_HMAC 7 select CRYPTO_HMAC >> 8 select CRYPTO_MD5 9 select CRYPTO_SHA1 9 select CRYPTO_SHA1 10 select CRYPTO_HASH_INFO 10 select CRYPTO_HASH_INFO 11 select SECURITY_PATH !! 11 select TCG_TPM if HAS_IOMEM && !UML 12 select TCG_TPM if HAS_IOMEM << 13 select TCG_TIS if TCG_TPM && X86 12 select TCG_TIS if TCG_TPM && X86 14 select TCG_CRB if TCG_TPM && ACPI 13 select TCG_CRB if TCG_TPM && ACPI 15 select TCG_IBMVTPM if TCG_TPM && PPC_P 14 select TCG_IBMVTPM if TCG_TPM && PPC_PSERIES 16 select INTEGRITY_AUDIT if AUDIT << 17 help 15 help 18 The Trusted Computing Group(TCG) run 16 The Trusted Computing Group(TCG) runtime Integrity 19 Measurement Architecture(IMA) mainta 17 Measurement Architecture(IMA) maintains a list of hash 20 values of executables and other sens 18 values of executables and other sensitive system files, 21 as they are read or executed. If an 19 as they are read or executed. If an attacker manages 22 to change the contents of an importa 20 to change the contents of an important system file 23 being measured, we can tell. 21 being measured, we can tell. 24 22 25 If your system has a TPM chip, then 23 If your system has a TPM chip, then IMA also maintains 26 an aggregate integrity value over th 24 an aggregate integrity value over this list inside the 27 TPM hardware, so that the TPM can pr 25 TPM hardware, so that the TPM can prove to a third party 28 whether or not critical system files 26 whether or not critical system files have been modified. 29 Read <https://www.usenix.org/events/ !! 27 Read <http://www.usenix.org/events/sec04/tech/sailer.html> 30 to learn more about IMA. 28 to learn more about IMA. 31 If unsure, say N. 29 If unsure, say N. 32 30 33 if IMA << 34 << 35 config IMA_KEXEC << 36 bool "Enable carrying the IMA measurem << 37 depends on TCG_TPM && HAVE_IMA_KEXEC << 38 default n << 39 help << 40 TPM PCRs are only reset on a hard r << 41 a TPM's quote after a soft boot, th << 42 running kernel must be saved and re << 43 << 44 Depending on the IMA policy, the me << 45 be very large. << 46 << 47 config IMA_MEASURE_PCR_IDX 31 config IMA_MEASURE_PCR_IDX 48 int 32 int >> 33 depends on IMA 49 range 8 14 34 range 8 14 50 default 10 35 default 10 51 help 36 help 52 IMA_MEASURE_PCR_IDX determines the T 37 IMA_MEASURE_PCR_IDX determines the TPM PCR register index 53 that IMA uses to maintain the integr 38 that IMA uses to maintain the integrity aggregate of the 54 measurement list. If unsure, use th 39 measurement list. If unsure, use the default 10. 55 40 56 config IMA_LSM_RULES 41 config IMA_LSM_RULES 57 bool 42 bool 58 depends on AUDIT && (SECURITY_SELINUX !! 43 depends on IMA && AUDIT && (SECURITY_SELINUX || SECURITY_SMACK) 59 default y 44 default y 60 help 45 help 61 Disabling this option will disregard 46 Disabling this option will disregard LSM based policy rules. 62 47 63 choice 48 choice 64 prompt "Default template" 49 prompt "Default template" 65 default IMA_NG_TEMPLATE 50 default IMA_NG_TEMPLATE >> 51 depends on IMA 66 help 52 help 67 Select the default IMA measurement t 53 Select the default IMA measurement template. 68 54 69 The original 'ima' measurement list 55 The original 'ima' measurement list template contains a 70 hash, defined as 20 bytes, and a nul 56 hash, defined as 20 bytes, and a null terminated pathname, 71 limited to 255 characters. The 'ima 57 limited to 255 characters. The 'ima-ng' measurement list 72 template permits both larger hash di 58 template permits both larger hash digests and longer 73 pathnames. The configured default te !! 59 pathnames. 74 by specifying "ima_template=" on the << 75 60 >> 61 config IMA_TEMPLATE >> 62 bool "ima" 76 config IMA_NG_TEMPLATE 63 config IMA_NG_TEMPLATE 77 bool "ima-ng (default)" 64 bool "ima-ng (default)" 78 config IMA_SIG_TEMPLATE 65 config IMA_SIG_TEMPLATE 79 bool "ima-sig" 66 bool "ima-sig" 80 endchoice 67 endchoice 81 68 82 config IMA_DEFAULT_TEMPLATE 69 config IMA_DEFAULT_TEMPLATE 83 string 70 string >> 71 depends on IMA >> 72 default "ima" if IMA_TEMPLATE 84 default "ima-ng" if IMA_NG_TEMPLATE 73 default "ima-ng" if IMA_NG_TEMPLATE 85 default "ima-sig" if IMA_SIG_TEMPLATE 74 default "ima-sig" if IMA_SIG_TEMPLATE 86 75 87 choice 76 choice 88 prompt "Default integrity hash algorit 77 prompt "Default integrity hash algorithm" 89 default IMA_DEFAULT_HASH_SHA1 78 default IMA_DEFAULT_HASH_SHA1 >> 79 depends on IMA 90 help 80 help 91 Select the default hash algorithm u 81 Select the default hash algorithm used for the measurement 92 list, integrity appraisal and audit 82 list, integrity appraisal and audit log. The compiled default 93 hash algorithm can be overwritten u 83 hash algorithm can be overwritten using the kernel command 94 line 'ima_hash=' option. 84 line 'ima_hash=' option. 95 85 96 config IMA_DEFAULT_HASH_SHA1 86 config IMA_DEFAULT_HASH_SHA1 97 bool "SHA1 (default)" 87 bool "SHA1 (default)" 98 depends on CRYPTO_SHA1=y !! 88 depends on CRYPTO_SHA1 99 89 100 config IMA_DEFAULT_HASH_SHA256 90 config IMA_DEFAULT_HASH_SHA256 101 bool "SHA256" 91 bool "SHA256" 102 depends on CRYPTO_SHA256=y !! 92 depends on CRYPTO_SHA256 && !IMA_TEMPLATE 103 93 104 config IMA_DEFAULT_HASH_SHA512 94 config IMA_DEFAULT_HASH_SHA512 105 bool "SHA512" 95 bool "SHA512" 106 depends on CRYPTO_SHA512=y !! 96 depends on CRYPTO_SHA512 && !IMA_TEMPLATE 107 97 108 config IMA_DEFAULT_HASH_WP512 98 config IMA_DEFAULT_HASH_WP512 109 bool "WP512" 99 bool "WP512" 110 depends on CRYPTO_WP512=y !! 100 depends on CRYPTO_WP512 && !IMA_TEMPLATE 111 << 112 config IMA_DEFAULT_HASH_SM3 << 113 bool "SM3" << 114 depends on CRYPTO_SM3_GENERIC= << 115 endchoice 101 endchoice 116 102 117 config IMA_DEFAULT_HASH 103 config IMA_DEFAULT_HASH 118 string 104 string >> 105 depends on IMA 119 default "sha1" if IMA_DEFAULT_HASH_SHA 106 default "sha1" if IMA_DEFAULT_HASH_SHA1 120 default "sha256" if IMA_DEFAULT_HASH_S 107 default "sha256" if IMA_DEFAULT_HASH_SHA256 121 default "sha512" if IMA_DEFAULT_HASH_S 108 default "sha512" if IMA_DEFAULT_HASH_SHA512 122 default "wp512" if IMA_DEFAULT_HASH_WP 109 default "wp512" if IMA_DEFAULT_HASH_WP512 123 default "sm3" if IMA_DEFAULT_HASH_SM3 << 124 << 125 config IMA_WRITE_POLICY << 126 bool "Enable multiple writes to the IM << 127 default n << 128 help << 129 IMA policy can now be updated multip << 130 appended to the original policy. Ha << 131 scanned in FIFO order so be careful << 132 << 133 If unsure, say N. << 134 << 135 config IMA_READ_POLICY << 136 bool "Enable reading back the current << 137 default y if IMA_WRITE_POLICY << 138 default n if !IMA_WRITE_POLICY << 139 help << 140 It is often useful to be able to re << 141 even more important after introduci << 142 This option allows the root user to << 143 110 144 config IMA_APPRAISE 111 config IMA_APPRAISE 145 bool "Appraise integrity measurements" 112 bool "Appraise integrity measurements" >> 113 depends on IMA 146 default n 114 default n 147 help 115 help 148 This option enables local measuremen 116 This option enables local measurement integrity appraisal. 149 It requires the system to be labeled 117 It requires the system to be labeled with a security extended 150 attribute containing the file hash m 118 attribute containing the file hash measurement. To protect 151 the security extended attributes fro 119 the security extended attributes from offline attack, enable 152 and configure EVM. 120 and configure EVM. 153 121 154 For more information on integrity ap 122 For more information on integrity appraisal refer to: 155 <http://linux-ima.sourceforge.net> 123 <http://linux-ima.sourceforge.net> 156 If unsure, say N. 124 If unsure, say N. 157 125 158 config IMA_ARCH_POLICY !! 126 config IMA_TRUSTED_KEYRING 159 bool "Enable loading an IMA architectu !! 127 bool "Require all keys on the .ima keyring be signed" 160 depends on (KEXEC_SIG && IMA) || IMA_A !! 128 depends on IMA_APPRAISE && SYSTEM_TRUSTED_KEYRING 161 && INTEGRITY_ASYMMETRIC_KEY << 162 default n << 163 help << 164 This option enables loading an IMA a << 165 based on run time secure boot flags. << 166 << 167 config IMA_APPRAISE_BUILD_POLICY << 168 bool "IMA build time configured policy << 169 depends on IMA_APPRAISE && INTEGRITY_A << 170 default n << 171 help << 172 This option defines an IMA appraisal << 173 is enforced at run time without havi << 174 policy name on the boot command line << 175 policy rules persist after loading a << 176 << 177 Depending on the rules configured, t << 178 modules, firmware, the kexec kernel << 179 to be signed. Unsigned files might << 180 booting or applications from working << 181 << 182 config IMA_APPRAISE_REQUIRE_FIRMWARE_SIGS << 183 bool "Appraise firmware signatures" << 184 depends on IMA_APPRAISE_BUILD_POLICY << 185 default n << 186 help << 187 This option defines a policy requiri << 188 including the regulatory.db. If bot << 189 CFG80211_REQUIRE_SIGNED_REGDB are en << 190 verification methods are necessary. << 191 << 192 config IMA_APPRAISE_REQUIRE_KEXEC_SIGS << 193 bool "Appraise kexec kernel image sign << 194 depends on IMA_APPRAISE_BUILD_POLICY << 195 default n << 196 help << 197 Enabling this rule will require all << 198 be signed and verified by a public k << 199 keyring. << 200 << 201 Kernel image signatures can not be v << 202 kexec_load syscall. Enabling this r << 203 usage. << 204 << 205 config IMA_APPRAISE_REQUIRE_MODULE_SIGS << 206 bool "Appraise kernel modules signatur << 207 depends on IMA_APPRAISE_BUILD_POLICY << 208 default n << 209 help << 210 Enabling this rule will require all << 211 and verified by a public key on the << 212 << 213 Kernel module signatures can only be << 214 via the finit_module syscall. Enabli << 215 the usage of the init_module syscall << 216 << 217 config IMA_APPRAISE_REQUIRE_POLICY_SIGS << 218 bool "Appraise IMA policy signature" << 219 depends on IMA_APPRAISE_BUILD_POLICY << 220 default n << 221 help << 222 Enabling this rule will require the << 223 and verified by a key on the trusted << 224 << 225 config IMA_APPRAISE_BOOTPARAM << 226 bool "ima_appraise boot parameter" << 227 depends on IMA_APPRAISE << 228 default y << 229 help << 230 This option enables the different "i << 231 (eg. fix, log) from the boot command << 232 << 233 config IMA_APPRAISE_MODSIG << 234 bool "Support module-style signatures << 235 depends on IMA_APPRAISE << 236 depends on INTEGRITY_ASYMMETRIC_KEYS << 237 select PKCS7_MESSAGE_PARSER << 238 select MODULE_SIG_FORMAT << 239 default n << 240 help << 241 Adds support for signatures appende << 242 appended signature is the same used << 243 The modsig keyword can be used in t << 244 to accept such signatures. << 245 << 246 config IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_O << 247 bool "Permit keys validly signed by a << 248 depends on SYSTEM_TRUSTED_KEYRING << 249 depends on SECONDARY_TRUSTED_KEYRING << 250 depends on INTEGRITY_ASYMMETRIC_KEYS 129 depends on INTEGRITY_ASYMMETRIC_KEYS 251 select INTEGRITY_TRUSTED_KEYRING !! 130 default y 252 default n << 253 help << 254 Keys may be added to the IMA or IMA << 255 key is validly signed by a CA cert i << 256 machine (if configured), or secondar << 257 key must also have the digitalSignat << 258 << 259 Intermediate keys between those the << 260 IMA keys to be added may be added to << 261 provided they are validly signed by << 262 built-in, machine (if configured) or << 263 << 264 config IMA_BLACKLIST_KEYRING << 265 bool "Create IMA machine owner blackli << 266 depends on SYSTEM_TRUSTED_KEYRING << 267 depends on INTEGRITY_TRUSTED_KEYRING << 268 default n << 269 help 131 help 270 This option creates an IMA blacklis !! 132 This option requires that all keys added to the .ima 271 revoked IMA keys. It is consulted !! 133 keyring be signed by a key on the system trusted keyring. 272 the search is successful the reques << 273 an error is returned to the caller. << 274 134 275 config IMA_LOAD_X509 135 config IMA_LOAD_X509 276 bool "Load X509 certificate onto the ' 136 bool "Load X509 certificate onto the '.ima' trusted keyring" 277 depends on INTEGRITY_TRUSTED_KEYRING !! 137 depends on IMA_TRUSTED_KEYRING 278 default n 138 default n 279 help 139 help 280 File signature verification is base 140 File signature verification is based on the public keys 281 loaded on the .ima trusted keyring. 141 loaded on the .ima trusted keyring. These public keys are 282 X509 certificates signed by a trust 142 X509 certificates signed by a trusted key on the 283 .system keyring. This option enabl 143 .system keyring. This option enables X509 certificate 284 loading from the kernel onto the '. 144 loading from the kernel onto the '.ima' trusted keyring. 285 145 286 config IMA_X509_PATH 146 config IMA_X509_PATH 287 string "IMA X509 certificate path" 147 string "IMA X509 certificate path" 288 depends on IMA_LOAD_X509 148 depends on IMA_LOAD_X509 289 default "/etc/keys/x509_ima.der" 149 default "/etc/keys/x509_ima.der" 290 help 150 help 291 This option defines IMA X509 certif 151 This option defines IMA X509 certificate path. 292 152 293 config IMA_APPRAISE_SIGNED_INIT 153 config IMA_APPRAISE_SIGNED_INIT 294 bool "Require signed user-space initia 154 bool "Require signed user-space initialization" 295 depends on IMA_LOAD_X509 155 depends on IMA_LOAD_X509 296 default n 156 default n 297 help 157 help 298 This option requires user-space ini 158 This option requires user-space init to be signed. 299 << 300 config IMA_MEASURE_ASYMMETRIC_KEYS << 301 bool << 302 depends on ASYMMETRIC_PUBLIC_KEY_SUBTY << 303 default y << 304 << 305 config IMA_QUEUE_EARLY_BOOT_KEYS << 306 bool << 307 depends on IMA_MEASURE_ASYMMETRIC_KEYS << 308 depends on SYSTEM_TRUSTED_KEYRING << 309 default y << 310 << 311 config IMA_SECURE_AND_OR_TRUSTED_BOOT << 312 bool << 313 depends on IMA_ARCH_POLICY << 314 help << 315 This option is selected by architect << 316 trusted boot based on IMA runtime po << 317 << 318 config IMA_DISABLE_HTABLE << 319 bool "Disable htable to allow measurem << 320 default n << 321 help << 322 This option disables htable to allo << 323 << 324 endif <<

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TOMOYO Linux Cross Reference
Linux/security/integrity/ima/Kconfig

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Differences between /security/integrity/ima/Kconfig (Version linux-6.12-rc7) and /security/integrity/ima/Kconfig (Version linux-4.4.302)

TOMOYO Linux Cross Reference Linux/security/integrity/ima/Kconfig

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Differences between /security/integrity/ima/Kconfig (Version linux-6.12-rc7) and /security/integrity/ima/Kconfig (Version linux-4.4.302)

TOMOYO Linux Cross Reference
Linux/security/integrity/ima/Kconfig