trust/SecPolicy.h

   1 /*
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   8  * Version 2.0 (the 'License'). You may not use this file except in
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  10  * http://www.opensource.apple.com/apsl/ and read it before using this
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  23
  24 /*!
  25      @header SecPolicy
  26      The functions provided in SecPolicy.h provide an interface to various
  27      X.509 certificate trust policies.
  28  */
  29
  30 #ifndef _SECURITY_SECPOLICY_H_
  31 #define _SECURITY_SECPOLICY_H_
  32
  33 #include <CoreFoundation/CFBase.h>
  34 #include <CoreFoundation/CFDictionary.h>
  35 #include <Security/SecBase.h>
  36
  37 __BEGIN_DECLS
  38
  39 CF_ASSUME_NONNULL_BEGIN
  40 CF_IMPLICIT_BRIDGING_ENABLED
  41
  42 /*!
  43      @enum Policy Constants
  44      @discussion Predefined constants used to specify a policy.
  45      @constant kSecPolicyAppleX509Basic
  46      @constant kSecPolicyAppleSSL
  47      @constant kSecPolicyAppleSMIME
  48      @constant kSecPolicyAppleEAP
  49      @constant kSecPolicyAppleiChat
  50      @constant kSecPolicyAppleIPsec
  51      @constant kSecPolicyApplePKINITClient
  52      @constant kSecPolicyApplePKINITServer
  53      @constant kSecPolicyAppleCodeSigning
  54      @constant kSecPolicyMacAppStoreReceipt
  55      @constant kSecPolicyAppleIDValidation
  56      @constant kSecPolicyAppleTimeStamping
  57      @constant kSecPolicyAppleRevocation
  58      @constant kSecPolicyApplePassbookSigning
  59      @constant kSecPolicyApplePayIssuerEncryption
  60  */
  61 extern const CFStringRef kSecPolicyAppleX509Basic
  62     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
  63 extern const CFStringRef kSecPolicyAppleSSL
  64     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
  65 extern const CFStringRef kSecPolicyAppleSMIME
  66     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
  67 extern const CFStringRef kSecPolicyAppleEAP
  68     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
  69 extern const CFStringRef kSecPolicyAppleIPsec
  70     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
  71 #if TARGET_OS_OSX
  72 extern const CFStringRef kSecPolicyAppleiChat
  73     __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_7, __MAC_10_9, __IPHONE_NA, __IPHONE_NA);
  74 #endif
  75 extern const CFStringRef kSecPolicyApplePKINITClient
  76     API_AVAILABLE(macos(10.7)) API_UNAVAILABLE(ios, watchos, tvos, bridgeos, iosmac);
  77 extern const CFStringRef kSecPolicyApplePKINITServer
  78     API_AVAILABLE(macos(10.7)) API_UNAVAILABLE(ios, watchos, tvos, bridgeos, iosmac);
  79 extern const CFStringRef kSecPolicyAppleCodeSigning
  80     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
  81 extern const CFStringRef kSecPolicyMacAppStoreReceipt
  82     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_9_0);
  83 extern const CFStringRef kSecPolicyAppleIDValidation
  84     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
  85 extern const CFStringRef kSecPolicyAppleTimeStamping
  86     __OSX_AVAILABLE_STARTING(__MAC_10_8, __IPHONE_7_0);
  87 extern const CFStringRef kSecPolicyAppleRevocation
  88     __OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_7_0);
  89 extern const CFStringRef kSecPolicyApplePassbookSigning
  90     __OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_7_0);
  91 extern const CFStringRef kSecPolicyApplePayIssuerEncryption
  92     __OSX_AVAILABLE_STARTING(__MAC_10_11, __IPHONE_9_0);
  93
  94 /*!
  95     @enum Policy Value Constants
  96     @abstract Predefined property key constants used to get or set values in
  97     a dictionary for a policy instance.
  98     @discussion
  99         All policies will have the following read-only value:
 100             kSecPolicyOid       (the policy object identifier)
 101
 102         Additional policy values which your code can optionally set:
 103             kSecPolicyName      (name which must be matched)
 104             kSecPolicyClient    (evaluate for client, rather than server)
 105             kSecPolicyRevocationFlags   (only valid for a revocation policy)
 106             kSecPolicyTeamIdentifier    (only valid for a Passbook signing policy)
 107
 108     @constant kSecPolicyOid Specifies the policy OID (value is a CFStringRef)
 109     @constant kSecPolicyName Specifies a CFStringRef (or CFArrayRef of same)
 110         containing a name which must be matched in the certificate to satisfy
 111         this policy. For SSL/TLS, EAP, and IPSec policies, this specifies the
 112         server name which must match the common name of the certificate.
 113         For S/MIME, this specifies the RFC822 email address. For Passbook
 114         signing, this specifies the pass signer.
 115     @constant kSecPolicyClient Specifies a CFBooleanRef value that indicates
 116         this evaluation should be for a client certificate. If not set (or
 117         false), the policy evaluates the certificate as a server certificate.
 118     @constant kSecPolicyRevocationFlags Specifies a CFNumberRef that holds a
 119         kCFNumberCFIndexType bitmask value. See "Revocation Policy Constants"
 120         for a description of individual bits in this value.
 121     @constant kSecPolicyTeamIdentifier Specifies a CFStringRef containing a
 122         team identifier which must be matched in the certificate to satisfy
 123         this policy. For the Passbook signing policy, this string must match
 124         the Organizational Unit field of the certificate subject.
 125  */
 126 extern const CFStringRef kSecPolicyOid
 127     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
 128 extern const CFStringRef kSecPolicyName
 129     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
 130 extern const CFStringRef kSecPolicyClient
 131     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
 132 extern const CFStringRef kSecPolicyRevocationFlags
 133     __OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_7_0);
 134 extern const CFStringRef kSecPolicyTeamIdentifier
 135     __OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_7_0);
 136
 137
 138 /*!
 139  @function SecPolicyGetTypeID
 140  @abstract Returns the type identifier of SecPolicy instances.
 141  @result The CFTypeID of SecPolicy instances.
 142  */
 143 CFTypeID SecPolicyGetTypeID(void)
 144     __OSX_AVAILABLE_STARTING(__MAC_10_3, __IPHONE_2_0);
 145
 146 /*!
 147  @function SecPolicyCopyProperties
 148  @abstract Returns a dictionary of this policy's properties.
 149  @param policyRef A policy reference.
 150  @result A properties dictionary. See "Policy Value Constants" for a list
 151  of currently defined property keys. It is the caller's responsibility to
 152  CFRelease this reference when it is no longer needed.
 153  @result A result code. See "Security Error Codes" (SecBase.h).
 154  @discussion This function returns the properties for a policy, as set by the
 155  policy's construction function or by a prior call to SecPolicySetProperties.
 156  */
 157 __nullable
 158 CFDictionaryRef SecPolicyCopyProperties(SecPolicyRef policyRef)
 159     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_7_0);
 160
 161 /*!
 162  @function SecPolicyCreateBasicX509
 163  @abstract Returns a policy object for the default X.509 policy.
 164  @result A policy object. The caller is responsible for calling CFRelease
 165  on this when it is no longer needed.
 166  */
 167 SecPolicyRef SecPolicyCreateBasicX509(void)
 168     __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_2_0);
 169
 170 /*!
 171  @function SecPolicyCreateSSL
 172  @abstract Returns a policy object for evaluating SSL certificate chains.
 173  @param server Passing true for this parameter creates a policy for SSL
 174  server certificates.
 175  @param hostname (Optional) If present, the policy will require the specified
 176  hostname to match the hostname in the leaf certificate.
 177  @result A policy object. The caller is responsible for calling CFRelease
 178  on this when it is no longer needed.
 179  */
 180 SecPolicyRef SecPolicyCreateSSL(Boolean server, CFStringRef __nullable hostname)
 181     __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_2_0);
 182
 183 /*!
 184      @enum Revocation Policy Constants
 185      @abstract Predefined constants which allow you to specify how revocation
 186      checking will be performed for a trust evaluation.
 187      @constant kSecRevocationOCSPMethod If this flag is set, perform revocation
 188      checking using OCSP (Online Certificate Status Protocol).
 189      @constant kSecRevocationCRLMethod If this flag is set, perform revocation
 190      checking using the CRL (Certificate Revocation List) method.
 191      @constant kSecRevocationPreferCRL If this flag is set, then CRL revocation
 192      checking will be preferred over OCSP (by default, OCSP is preferred.)
 193      Note that this flag only matters if both revocation methods are specified.
 194      @constant kSecRevocationRequirePositiveResponse If this flag is set, then
 195      the policy will fail unless a verified positive response is obtained. If
 196      the flag is not set, revocation checking is done on a "best attempt" basis,
 197      where failure to reach the server is not considered fatal.
 198      @constant kSecRevocationNetworkAccessDisabled If this flag is set, then
 199      no network access is performed; only locally cached replies are consulted.
 200      This constant disallows network access for both revocation checks and
 201      intermediate CA issuer fetching.
 202      @constant kSecRevocationUseAnyAvailableMethod Specifies that either
 203      OCSP or CRL may be used, depending on the method(s) specified in the
 204      certificate and the value of kSecRevocationPreferCRL.
 205  */
 206 CF_ENUM(CFOptionFlags) {
 207     kSecRevocationOCSPMethod = (1 << 0),
 208     kSecRevocationCRLMethod = (1 << 1),
 209     kSecRevocationPreferCRL = (1 << 2),
 210     kSecRevocationRequirePositiveResponse = (1 << 3),
 211     kSecRevocationNetworkAccessDisabled = (1 << 4),
 212     kSecRevocationUseAnyAvailableMethod = (kSecRevocationOCSPMethod |
 213                                            kSecRevocationCRLMethod)
 214 };
 215
 216 /*!
 217      @function SecPolicyCreateRevocation
 218      @abstract Returns a policy object for checking revocation of certificates.
 219      @result A policy object. The caller is responsible for calling CFRelease
 220      on this when it is no longer needed.
 221      @param revocationFlags Flags to specify revocation checking options.
 222      @discussion Use this function to create a revocation policy with behavior
 223      specified by revocationFlags. See the "Revocation Policy Constants" section
 224      for a description of these flags. Note: it is usually not necessary to
 225      create a revocation policy yourself unless you wish to override default
 226      system behavior (e.g. to force a particular method, or to disable
 227      revocation checking entirely.)
 228  */
 229 __nullable
 230 SecPolicyRef SecPolicyCreateRevocation(CFOptionFlags revocationFlags)
 231     __OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_7_0);
 232
 233 /*!
 234      @function SecPolicyCreateWithProperties
 235      @abstract Returns a policy object based on an object identifier for the
 236      policy type. See the "Policy Constants" section for a list of defined
 237      policy object identifiers.
 238      @param policyIdentifier The identifier for the desired policy type.
 239      @param properties (Optional) A properties dictionary. See "Policy Value
 240      Constants" for a list of currently defined property keys.
 241      @result The returned policy reference, or NULL if the policy could not be
 242      created.
 243  */
 244 __nullable
 245 SecPolicyRef SecPolicyCreateWithProperties(CFTypeRef policyIdentifier,
 246                                            CFDictionaryRef __nullable properties)
 247     __OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_7_0);
 248
 249 CF_IMPLICIT_BRIDGING_DISABLED
 250 CF_ASSUME_NONNULL_END
 251
 252 /*
 253  *  Legacy functions (OS X only)
 254  */
 255 #if TARGET_OS_OSX
 256 #include <Security/cssmtype.h>
 257
 258 CF_ASSUME_NONNULL_BEGIN
 259 CF_IMPLICIT_BRIDGING_ENABLED
 260
 261 /*!
 262     @enum Policy Value Constants (OS X)
 263     @discussion Predefined property key constants used to get or set values in
 264         a dictionary for a policy instance.
 265
 266         Some policy values may specify CFBooleanRef key usage constraints:
 267             kSecPolicyKU_DigitalSignature
 268             kSecPolicyKU_NonRepudiation
 269             kSecPolicyKU_KeyEncipherment
 270             kSecPolicyKU_DataEncipherment
 271             kSecPolicyKU_KeyAgreement
 272             kSecPolicyKU_KeyCertSign
 273             kSecPolicyKU_CRLSign
 274             kSecPolicyKU_EncipherOnly
 275             kSecPolicyKU_DecipherOnly
 276
 277         kSecPolicyKU policy values define certificate-level key purposes,
 278         in contrast to the key-level definitions in SecItem.h
 279
 280         For example, a key in a certificate might be acceptable to use for
 281         signing a CRL, but not for signing another certificate. In either
 282         case, this key would have the ability to sign (i.e. kSecAttrCanSign
 283         is true), but may only sign for specific purposes allowed by these
 284         policy constants. Similarly, a public key might have the capability
 285         to perform encryption or decryption, but the certificate in which it
 286         resides might have a decipher-only certificate policy.
 287
 288         These constants correspond to values defined in RFC 5280, section
 289         4.2.1.3 (Key Usage) which define the purpose of a key contained in a
 290         certificate, in contrast to section 4.1.2.7 which define the uses that
 291         a key is capable of.
 292
 293         Note: these constants are not available on iOS. Your code should
 294         avoid direct reliance on these values for making policy decisions
 295         and use higher level policies where possible.
 296
 297     @constant kSecPolicyKU_DigitalSignature Specifies that the certificate must
 298         have a key usage that allows it to be used for signing.
 299     @constant kSecPolicyKU_NonRepudiation Specifies that the certificate must
 300         have a key usage that allows it to be used for non-repudiation.
 301     @constant kSecPolicyKU_KeyEncipherment Specifies that the certificate must
 302         have a key usage that allows it to be used for key encipherment.
 303     @constant kSecPolicyKU_DataEncipherment Specifies that the certificate must
 304         have a key usage that allows it to be used for data encipherment.
 305     @constant kSecPolicyKU_KeyAgreement Specifies that the certificate must
 306         have a key usage that allows it to be used for key agreement.
 307     @constant kSecPolicyKU_KeyCertSign Specifies that the certificate must
 308         have a key usage that allows it to be used for signing certificates.
 309     @constant kSecPolicyKU_CRLSign Specifies that the certificate must
 310         have a key usage that allows it to be used for signing CRLs.
 311     @constant kSecPolicyKU_EncipherOnly Specifies that the certificate must
 312         have a key usage that permits it to be used for encryption only.
 313     @constant kSecPolicyKU_DecipherOnly Specifies that the certificate must
 314         have a key usage that permits it to be used for decryption only.
 315  */
 316 extern const CFStringRef kSecPolicyKU_DigitalSignature
 317     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_NA);
 318 extern const CFStringRef kSecPolicyKU_NonRepudiation
 319     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_NA);
 320 extern const CFStringRef kSecPolicyKU_KeyEncipherment
 321     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_NA);
 322 extern const CFStringRef kSecPolicyKU_DataEncipherment
 323     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_NA);
 324 extern const CFStringRef kSecPolicyKU_KeyAgreement
 325     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_NA);
 326 extern const CFStringRef kSecPolicyKU_KeyCertSign
 327     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_NA);
 328 extern const CFStringRef kSecPolicyKU_CRLSign
 329     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_NA);
 330 extern const CFStringRef kSecPolicyKU_EncipherOnly
 331     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_NA);
 332 extern const CFStringRef kSecPolicyKU_DecipherOnly
 333     __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_NA);
 334
 335 /*!
 336      @function SecPolicyCreateWithOID
 337      @abstract Returns a policy object based on an object identifier for the
 338      policy type. See the "Policy Constants" section for a list of defined
 339      policy object identifiers.
 340      @param policyOID The OID of the desired policy.
 341      @result The returned policy reference, or NULL if the policy could not be
 342      created.
 343      @discussion This function is deprecated in Mac OS X 10.9 and later;
 344      use SecPolicyCreateWithProperties (or a more specific policy creation
 345      function) instead.
 346  */
 347 __nullable
 348 SecPolicyRef SecPolicyCreateWithOID(CFTypeRef policyOID)
 349     __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_7, __MAC_10_9, __IPHONE_NA, __IPHONE_NA);
 350
 351 /*!
 352      @function SecPolicyGetOID
 353      @abstract Returns a policy's object identifier.
 354      @param policyRef A policy reference.
 355      @param oid On return, a pointer to the policy's object identifier.
 356      @result A result code. See "Security Error Codes" (SecBase.h).
 357      @discussion This function is deprecated in Mac OS X 10.7 and later;
 358      use SecPolicyCopyProperties instead.
 359  */
 360 OSStatus SecPolicyGetOID(SecPolicyRef policyRef, CSSM_OID *oid)
 361     __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_2, __MAC_10_7, __IPHONE_NA, __IPHONE_NA);
 362
 363 /*!
 364      @function SecPolicyGetValue
 365      @abstract Returns a policy's value.
 366      @param policyRef A policy reference.
 367      @param value On return, a pointer to the policy's value.
 368      @result A result code. See "Security Error Codes" (SecBase.h).
 369      @discussion This function is deprecated in Mac OS X 10.7 and later;
 370      use SecPolicyCopyProperties instead.
 371  */
 372 OSStatus SecPolicyGetValue(SecPolicyRef policyRef, CSSM_DATA *value)
 373     __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_2, __MAC_10_7, __IPHONE_NA, __IPHONE_NA);
 374
 375 /*!
 376      @function SecPolicySetValue
 377      @abstract Sets a policy's value.
 378      @param policyRef A policy reference.
 379      @param value The value to be set into the policy object, replacing any
 380      previous value.
 381      @result A result code. See "Security Error Codes" (SecBase.h).
 382      @discussion This function is deprecated in Mac OS X 10.7 and later. Policy
 383      instances should be considered read-only; in cases where your code would
 384      consider changing properties of a policy, it should instead create a new
 385      policy instance with the desired properties.
 386  */
 387 OSStatus SecPolicySetValue(SecPolicyRef policyRef, const CSSM_DATA *value)
 388     __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_2, __MAC_10_7, __IPHONE_NA, __IPHONE_NA);
 389
 390 /*!
 391      @function SecPolicySetProperties
 392      @abstract Sets a policy's properties.
 393      @param policyRef A policy reference.
 394      @param properties A properties dictionary. See "Policy Value Constants"
 395      for a list of currently defined property keys. This dictionary replaces the
 396      policy's existing properties, if any. Note that the policy OID (specified
 397      by kSecPolicyOid) is a read-only property of the policy and cannot be set.
 398      @result A result code. See "Security Error Codes" (SecBase.h).
 399      @discussion This function is deprecated in Mac OS X 10.9 and later. Policy
 400      instances should be considered read-only; in cases where your code would
 401      consider changing properties of a policy, it should instead create a new
 402      policy instance with the desired properties.
 403  */
 404 OSStatus SecPolicySetProperties(SecPolicyRef policyRef,
 405                                 CFDictionaryRef properties)
 406     __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_7, __MAC_10_9, __IPHONE_NA, __IPHONE_NA);
 407
 408 /*!
 409      @function SecPolicyGetTPHandle
 410      @abstract Returns the CSSM trust policy handle for the given policy.
 411      @param policyRef A policy reference.
 412      @param tpHandle On return, a pointer to a value of type CSSM_TP_HANDLE.
 413      @result A result code. See "Security Error Codes" (SecBase.h).
 414      @discussion This function is deprecated in Mac OS X 10.7 and later.
 415  */
 416 OSStatus SecPolicyGetTPHandle(SecPolicyRef policyRef, CSSM_TP_HANDLE *tpHandle)
 417     __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_2, __MAC_10_7, __IPHONE_NA, __IPHONE_NA);
 418
 419 CF_IMPLICIT_BRIDGING_DISABLED
 420 CF_ASSUME_NONNULL_END
 421
 422 #endif /* TARGET_OS_MAC && !TARGET_OS_IPHONE */
 423
 424 __END_DECLS
 425
 426 #endif /* !_SECURITY_SECPOLICY_H_ */