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)" >> 5 depends on SECURITY >> 6 select INTEGRITY 6 select SECURITYFS 7 select SECURITYFS 7 select CRYPTO 8 select CRYPTO 8 select CRYPTO_HMAC 9 select CRYPTO_HMAC >> 10 select CRYPTO_MD5 9 select CRYPTO_SHA1 11 select CRYPTO_SHA1 10 select CRYPTO_HASH_INFO !! 12 select TCG_TPM if HAS_IOMEM && !UML 11 select SECURITY_PATH << 12 select TCG_TPM if HAS_IOMEM << 13 select TCG_TIS if TCG_TPM && X86 13 select TCG_TIS if TCG_TPM && X86 14 select TCG_CRB if TCG_TPM && ACPI !! 14 select TCG_IBMVTPM if TCG_TPM && PPC64 15 select TCG_IBMVTPM if TCG_TPM && PPC_P << 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 >> 41 config IMA_AUDIT >> 42 bool "Enables auditing support" >> 43 depends on IMA >> 44 depends on AUDIT >> 45 default y >> 46 help >> 47 This option adds a kernel parameter 'ima_audit', which >> 48 allows informational auditing messages to be enabled >> 49 at boot. If this option is selected, informational integrity >> 50 auditing messages can be enabled with 'ima_audit=1' on >> 51 the kernel command line. >> 52 56 config IMA_LSM_RULES 53 config IMA_LSM_RULES 57 bool 54 bool 58 depends on AUDIT && (SECURITY_SELINUX !! 55 depends on IMA && AUDIT && (SECURITY_SELINUX || SECURITY_SMACK) 59 default y 56 default y 60 help 57 help 61 Disabling this option will disregard 58 Disabling this option will disregard LSM based policy rules. 62 59 63 choice << 64 prompt "Default template" << 65 default IMA_NG_TEMPLATE << 66 help << 67 Select the default IMA measurement t << 68 << 69 The original 'ima' measurement list << 70 hash, defined as 20 bytes, and a nul << 71 limited to 255 characters. The 'ima << 72 template permits both larger hash di << 73 pathnames. The configured default te << 74 by specifying "ima_template=" on the << 75 << 76 config IMA_NG_TEMPLATE << 77 bool "ima-ng (default)" << 78 config IMA_SIG_TEMPLATE << 79 bool "ima-sig" << 80 endchoice << 81 << 82 config IMA_DEFAULT_TEMPLATE << 83 string << 84 default "ima-ng" if IMA_NG_TEMPLATE << 85 default "ima-sig" if IMA_SIG_TEMPLATE << 86 << 87 choice << 88 prompt "Default integrity hash algorit << 89 default IMA_DEFAULT_HASH_SHA1 << 90 help << 91 Select the default hash algorithm u << 92 list, integrity appraisal and audit << 93 hash algorithm can be overwritten u << 94 line 'ima_hash=' option. << 95 << 96 config IMA_DEFAULT_HASH_SHA1 << 97 bool "SHA1 (default)" << 98 depends on CRYPTO_SHA1=y << 99 << 100 config IMA_DEFAULT_HASH_SHA256 << 101 bool "SHA256" << 102 depends on CRYPTO_SHA256=y << 103 << 104 config IMA_DEFAULT_HASH_SHA512 << 105 bool "SHA512" << 106 depends on CRYPTO_SHA512=y << 107 << 108 config IMA_DEFAULT_HASH_WP512 << 109 bool "WP512" << 110 depends on CRYPTO_WP512=y << 111 << 112 config IMA_DEFAULT_HASH_SM3 << 113 bool "SM3" << 114 depends on CRYPTO_SM3_GENERIC= << 115 endchoice << 116 << 117 config IMA_DEFAULT_HASH << 118 string << 119 default "sha1" if IMA_DEFAULT_HASH_SHA << 120 default "sha256" if IMA_DEFAULT_HASH_S << 121 default "sha512" if IMA_DEFAULT_HASH_S << 122 default "wp512" if IMA_DEFAULT_HASH_WP << 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 << 144 config IMA_APPRAISE 60 config IMA_APPRAISE 145 bool "Appraise integrity measurements" 61 bool "Appraise integrity measurements" >> 62 depends on IMA 146 default n 63 default n 147 help 64 help 148 This option enables local measuremen 65 This option enables local measurement integrity appraisal. 149 It requires the system to be labeled 66 It requires the system to be labeled with a security extended 150 attribute containing the file hash m 67 attribute containing the file hash measurement. To protect 151 the security extended attributes fro 68 the security extended attributes from offline attack, enable 152 and configure EVM. 69 and configure EVM. 153 70 154 For more information on integrity ap 71 For more information on integrity appraisal refer to: 155 <http://linux-ima.sourceforge.net> 72 <http://linux-ima.sourceforge.net> 156 If unsure, say N. 73 If unsure, say N. 157 << 158 config IMA_ARCH_POLICY << 159 bool "Enable loading an IMA architectu << 160 depends on (KEXEC_SIG && IMA) || IMA_A << 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 << 251 select INTEGRITY_TRUSTED_KEYRING << 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 << 270 This option creates an IMA blacklis << 271 revoked IMA keys. It is consulted << 272 the search is successful the reques << 273 an error is returned to the caller. << 274 << 275 config IMA_LOAD_X509 << 276 bool "Load X509 certificate onto the ' << 277 depends on INTEGRITY_TRUSTED_KEYRING << 278 default n << 279 help << 280 File signature verification is base << 281 loaded on the .ima trusted keyring. << 282 X509 certificates signed by a trust << 283 .system keyring. This option enabl << 284 loading from the kernel onto the '. << 285 << 286 config IMA_X509_PATH << 287 string "IMA X509 certificate path" << 288 depends on IMA_LOAD_X509 << 289 default "/etc/keys/x509_ima.der" << 290 help << 291 This option defines IMA X509 certif << 292 << 293 config IMA_APPRAISE_SIGNED_INIT << 294 bool "Require signed user-space initia << 295 depends on IMA_LOAD_X509 << 296 default n << 297 help << 298 This option requires user-space ini << 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-3.10.108)

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-3.10.108)

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