tests/TrustTests/EvaluationTests/KeySizeTests.m

   1 /*
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   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
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   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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  24
  25 #import <XCTest/XCTest.h>
  26 #include <Security/SecCertificatePriv.h>
  27 #include <Security/SecTrustPriv.h>
  28 #include <Security/SecPolicyPriv.h>
  29 #include "OSX/utilities/SecCFWrappers.h"
  30
  31 #import "TrustEvaluationTestCase.h"
  32 #include "../TestMacroConversions.h"
  33 #include "KeySizeTests_data.h"
  34
  35 @interface KeySizeTests : TrustEvaluationTestCase
  36 @end
  37
  38 @implementation KeySizeTests
  39
  40 - (bool)run_chain_of_threetest:(NSData *)cert0 cert1:(NSData *)cert1 root:(NSData *)root
  41                         result:(bool)should_succeed failureReason:(NSString **)failureReason
  42 {
  43     bool ok = false;
  44
  45     const void *secCert0, *secCert1, *secRoot;
  46     isnt(secCert0 = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)cert0), NULL, "create leaf");
  47     isnt(secCert1 = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)cert1), NULL, "create subCA");
  48     isnt(secRoot  = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)root),  NULL, "create root");
  49
  50     const void *v_certs[] = { secCert0, secCert1 };
  51     CFArrayRef certs = NULL;
  52     isnt(certs = CFArrayCreate(NULL, v_certs, sizeof(v_certs)/sizeof(*v_certs), &kCFTypeArrayCallBacks),
  53          NULL, "failed to create cert array");
  54     CFArrayRef anchors = NULL;
  55     isnt(anchors = CFArrayCreate(NULL, &secRoot, 1, &kCFTypeArrayCallBacks), NULL, "failed to create anchors array");
  56
  57     SecPolicyRef policy = NULL;
  58     isnt(policy = SecPolicyCreateBasicX509(), NULL, "failed to create policy");
  59     CFDateRef date = NULL;
  60     isnt(date = CFDateCreate(NULL, 472100000.0), NULL, "failed to create date"); // 17 Dec 2015
  61
  62     SecTrustRef trust = NULL;
  63     ok_status(SecTrustCreateWithCertificates(certs, policy, &trust), "failed to create trust");
  64     if (!date) { goto errOut; }
  65     ok_status(SecTrustSetVerifyDate(trust, date), "failed to set verify date");
  66     if (!anchors) { goto errOut; }
  67     ok_status(SecTrustSetAnchorCertificates(trust, anchors), "failed to set anchors");
  68
  69     bool did_succeed = SecTrustEvaluateWithError(trust, NULL);
  70     is(SecTrustGetCertificateCount(trust), 3, "expected chain of 3");
  71
  72     if (failureReason && should_succeed && !did_succeed) {
  73         *failureReason = CFBridgingRelease(SecTrustCopyFailureDescription(trust));
  74     } else if (failureReason && !should_succeed && did_succeed) {
  75         *failureReason = @"expected kSecTrustResultFatalTrustFailure";
  76     }
  77
  78     if ((should_succeed && did_succeed) || (!should_succeed && !did_succeed)) {
  79         ok = true;
  80     }
  81
  82 errOut:
  83     CFReleaseNull(secCert0);
  84     CFReleaseNull(secCert1);
  85     CFReleaseNull(secRoot);
  86     CFReleaseNull(certs);
  87     CFReleaseNull(anchors);
  88     CFReleaseNull(date);
  89     CFReleaseNull(policy);
  90     CFReleaseNull(trust);
  91
  92     return ok;
  93 }
  94
  95 - (void)test8192BitKeySize {
  96     /* Test prt_forest_fi that have a 8k RSA key */
  97     const void *prt_forest_fi;
  98     isnt(prt_forest_fi = SecCertificateCreateWithBytes(NULL, prt_forest_fi_certificate,
  99                                                        sizeof(prt_forest_fi_certificate)), NULL, "create prt_forest_fi");
 100     CFArrayRef certs = NULL;
 101     isnt(certs = CFArrayCreate(NULL, &prt_forest_fi, 1, &kCFTypeArrayCallBacks), NULL, "failed to create cert array");
 102     SecPolicyRef policy = NULL;
 103     isnt(policy = SecPolicyCreateSSL(true, CFSTR("owa.prt-forest.fi")), NULL, "failed to create policy");
 104     SecTrustRef trust = NULL;
 105     ok_status(SecTrustCreateWithCertificates(certs, policy, &trust),
 106               "create trust for ip client owa.prt-forest.fi");
 107     CFDateRef date = CFDateCreate(NULL, 391578321.0);
 108     ok_status(SecTrustSetVerifyDate(trust, date),
 109               "set owa.prt-forest.fi trust date to May 2013");
 110
 111     SecKeyRef pubkey = SecTrustCopyKey(trust);
 112     isnt(pubkey, NULL, "pubkey returned");
 113
 114     CFReleaseNull(certs);
 115     CFReleaseNull(prt_forest_fi);
 116     CFReleaseNull(policy);
 117     CFReleaseNull(trust);
 118     CFReleaseNull(pubkey);
 119     CFReleaseNull(date);
 120 }
 121
 122 - (void)testRSAKeySizes {
 123     ok([self run_chain_of_threetest:[NSData dataWithBytes:_leaf2048A length:sizeof(_leaf2048A)]
 124                               cert1:[NSData dataWithBytes:_int2048A length:sizeof(_int2048A)]
 125                                root:[NSData dataWithBytes:_root512 length:sizeof(_root512)]
 126                              result:false
 127                       failureReason:nil],
 128        "SECURITY: failed to detect weak root");
 129
 130     ok([self run_chain_of_threetest:[NSData dataWithBytes:_leaf2048B length:sizeof(_leaf2048B)]
 131                               cert1:[NSData dataWithBytes:_int512 length:sizeof(_int512)]
 132                                root:[NSData dataWithBytes:_root2048 length:sizeof(_root2048)]
 133                              result:false
 134                       failureReason:nil],
 135        "SECURITY: failed to detect weak intermediate");
 136
 137     ok([self run_chain_of_threetest:[NSData dataWithBytes:_leaf512 length:sizeof(_leaf512)]
 138                               cert1:[NSData dataWithBytes:_int2048B length:sizeof(_int2048B)]
 139                                root:[NSData dataWithBytes:_root2048 length:sizeof(_root2048)]
 140                              result:false
 141                       failureReason:nil],
 142        "SECURITY: failed to detect weak leaf");
 143
 144     NSString *failureReason = nil;
 145     ok([self run_chain_of_threetest:[NSData dataWithBytes:_leaf1024 length:sizeof(_leaf1024)]
 146                               cert1:[NSData dataWithBytes:_int2048B length:sizeof(_int2048B)]
 147                                root:[NSData dataWithBytes:_root2048 length:sizeof(_root2048)]
 148                              result:true
 149                       failureReason:&failureReason],
 150        "REGRESSION: key size test 1024-bit leaf: %@", failureReason);
 151
 152     ok([self run_chain_of_threetest:[NSData dataWithBytes:_leaf2048C length:sizeof(_leaf2048C)]
 153                               cert1:[NSData dataWithBytes:_int2048B length:sizeof(_int2048B)]
 154                                root:[NSData dataWithBytes:_root2048 length:sizeof(_root2048)]
 155                              result:true
 156                       failureReason:&failureReason],
 157        "REGRESSION: key size test 2048-bit leaf: %@", failureReason);
 158 }
 159
 160 - (void)testECKeySizes {
 161     /* Because CoreCrypto does not support P128, we fail to chain if any CAs use weakly sized curves */
 162     ok([self run_chain_of_threetest:[NSData dataWithBytes:_leaf128 length:sizeof(_leaf128)]
 163                               cert1:[NSData dataWithBytes:_int384B length:sizeof(_int384B)]
 164                                root:[NSData dataWithBytes:_root384 length:sizeof(_root384)]
 165                              result:false
 166                       failureReason:nil],
 167        "SECURITY: failed to detect weak leaf");
 168
 169     NSString *failureReason = nil;
 170     ok([self run_chain_of_threetest:[NSData dataWithBytes:_leaf192 length:sizeof(_leaf192)]
 171                               cert1:[NSData dataWithBytes:_int384B length:sizeof(_int384B)]
 172                                root:[NSData dataWithBytes:_root384 length:sizeof(_root384)]
 173                              result:true
 174                       failureReason:&failureReason],
 175        "REGRESSION: key size test 192-bit leaf: %@", failureReason);
 176
 177     ok([self run_chain_of_threetest:[NSData dataWithBytes:_leaf384C length:sizeof(_leaf384C)]
 178                               cert1:[NSData dataWithBytes:_int384B length:sizeof(_int384B)]
 179                                root:[NSData dataWithBytes:_root384 length:sizeof(_root384)]
 180                              result:true
 181                       failureReason:&failureReason],
 182        "REGRESSION: key size test 384-bit leaf: %@", failureReason);
 183 }
 184
 185 - (bool)runTrust:(NSArray *)certs
 186          anchors:(NSArray *)anchors
 187           policy:(SecPolicyRef)policy
 188       verifyDate:(NSDate *)date
 189 {
 190     SecTrustRef trust = NULL;
 191     XCTAssert(errSecSuccess == SecTrustCreateWithCertificates((__bridge CFArrayRef)certs, policy, &trust));
 192     if (anchors) {
 193         XCTAssert(errSecSuccess == SecTrustSetAnchorCertificates(trust, (__bridge CFArrayRef)anchors));
 194     }
 195     XCTAssert(errSecSuccess == SecTrustSetVerifyDate(trust, (__bridge CFDateRef)date));
 196
 197     CFErrorRef error = NULL;
 198     bool result = SecTrustEvaluateWithError(trust, &error);
 199     CFReleaseNull(error);
 200     CFReleaseNull(trust);
 201     return result;
 202 }
 203
 204 - (void)test1024_appTrustedLeaf {
 205     NSDate *verifyDate = [NSDate dateWithTimeIntervalSinceReferenceDate:578000000.0]; // April 26, 2019 at 12:33:20 PM PDT
 206     SecCertificateRef leaf = SecCertificateCreateWithBytes(NULL, _leaf1024SSL, sizeof(_leaf1024SSL));
 207     SecCertificateRef root = SecCertificateCreateWithBytes(NULL, _rootSSL, sizeof(_rootSSL));
 208
 209     NSArray *certs = @[ (__bridge id)leaf];
 210     NSArray *anchor = @[ (__bridge id)root ];
 211     CFReleaseNull(leaf);
 212     CFReleaseNull(root);
 213
 214     SecPolicyRef serverPolicy = SecPolicyCreateSSL(true, CFSTR("example.com"));
 215     XCTAssertFalse([self runTrust:certs anchors:anchor policy:serverPolicy verifyDate:verifyDate], "anchor trusted 1024-bit cert succeeded for SSL server");
 216     CFReleaseNull(serverPolicy);
 217
 218     SecPolicyRef clientPolicy = SecPolicyCreateSSL(false, NULL);
 219     XCTAssertTrue([self runTrust:certs anchors:anchor policy:clientPolicy verifyDate:verifyDate], "anchor trusted 1024-bit cert failed for SSL client");
 220     CFReleaseNull(clientPolicy);
 221
 222     SecPolicyRef eapPolicy = SecPolicyCreateEAP(true, (__bridge CFArrayRef)@[@"example.com"]);
 223     XCTAssertTrue([self runTrust:certs anchors:anchor policy:eapPolicy verifyDate:verifyDate], "anchor trusted 1024-bit cert failed for EAP");
 224     CFReleaseNull(eapPolicy);
 225
 226     SecPolicyRef legacyPolicy = SecPolicyCreateLegacySSL(true, CFSTR("example.com"));
 227     XCTAssertTrue([self runTrust:certs anchors:anchor policy:legacyPolicy verifyDate:verifyDate], "anchor trusted 1024-bit cert failed for legacy SSL policy");
 228     CFReleaseNull(legacyPolicy);
 229
 230     SecPolicyRef legacyClientPolicy = SecPolicyCreateLegacySSL(false, NULL);
 231     XCTAssertTrue([self runTrust:certs anchors:anchor policy:legacyClientPolicy verifyDate:verifyDate], "anchor trusted 1024-bit cert failed for legacy SSL client policy");
 232     CFReleaseNull(legacyClientPolicy);
 233 }
 234
 235 #if !TARGET_OS_BRIDGE // bridgeOS doesn't have trust settings
 236 - (void)test1024_trustSettingsOnRoot_TestLeaf {
 237     NSDate *verifyDate = [NSDate dateWithTimeIntervalSinceReferenceDate:578000000.0]; // April 26, 2019 at 12:33:20 PM PDT
 238     SecCertificateRef leaf = SecCertificateCreateWithBytes(NULL, _leaf1024SSL, sizeof(_leaf1024SSL));
 239     SecCertificateRef root = SecCertificateCreateWithBytes(NULL, _rootSSL, sizeof(_rootSSL));
 240     NSArray *certs = @[ (__bridge id)leaf, (__bridge id)root ];
 241     CFReleaseNull(leaf);
 242
 243     id persistentRef = [self addTrustSettingsForCert:root];
 244
 245     SecPolicyRef serverPolicy = SecPolicyCreateSSL(true, CFSTR("example.com"));
 246     XCTAssertFalse([self runTrust:certs anchors:nil policy:serverPolicy verifyDate:verifyDate], "trust settings on root, 1024-bit leaf succeeded for SSL server");
 247     CFReleaseNull(serverPolicy);
 248
 249     SecPolicyRef clientPolicy = SecPolicyCreateSSL(false, NULL);
 250     XCTAssertTrue([self runTrust:certs anchors:nil policy:clientPolicy verifyDate:verifyDate], "trust settings on root, 1024-bit leaf failed for SSL client");
 251     CFReleaseNull(clientPolicy);
 252
 253     SecPolicyRef eapPolicy = SecPolicyCreateEAP(true, (__bridge CFArrayRef)@[@"example.com"]);
 254     XCTAssertTrue([self runTrust:certs anchors:nil policy:eapPolicy verifyDate:verifyDate], "trust settings on root, 1024-bit leaf failed for EAP");
 255     CFReleaseNull(eapPolicy);
 256
 257     [self removeTrustSettingsForCert:root persistentRef:persistentRef];
 258     CFReleaseNull(root);
 259 }
 260
 261 - (void)test1024_trustSettingsOnLeaf {
 262     NSDate *verifyDate = [NSDate dateWithTimeIntervalSinceReferenceDate:578000000.0]; // April 26, 2019 at 12:33:20 PM PDT
 263     SecCertificateRef leaf = SecCertificateCreateWithBytes(NULL, _leaf1024SSL, sizeof(_leaf1024SSL));
 264     NSArray *certs = @[ (__bridge id)leaf ];
 265
 266     id persistentRef = [self addTrustSettingsForCert:leaf];
 267
 268     SecPolicyRef serverPolicy = SecPolicyCreateSSL(true, CFSTR("example.com"));
 269     XCTAssertTrue([self runTrust:certs anchors:nil policy:serverPolicy verifyDate:verifyDate], "trust settings on 1024-bit leaf failed for SSL server");
 270     CFReleaseNull(serverPolicy);
 271
 272     SecPolicyRef clientPolicy = SecPolicyCreateSSL(false, NULL);
 273     XCTAssertTrue([self runTrust:certs anchors:nil policy:clientPolicy verifyDate:verifyDate], "trust settings on 1024-bit leaf failed for SSL client");
 274     CFReleaseNull(clientPolicy);
 275
 276     SecPolicyRef eapPolicy = SecPolicyCreateEAP(true, (__bridge CFArrayRef)@[@"example.com"]);
 277     XCTAssertTrue([self runTrust:certs anchors:nil policy:eapPolicy verifyDate:verifyDate], "trust settings on 1024-bit leaf failed for EAP");
 278     CFReleaseNull(eapPolicy);
 279
 280     [self removeTrustSettingsForCert:leaf persistentRef:persistentRef];
 281     CFReleaseNull(leaf);
 282 }
 283 #endif // !TARGET_OS_BRIDGE
 284
 285 #if !TARGET_OS_BRIDGE // bridgeOS doesn't have a system trust store
 286 - (void)test2048_systemTrusted {
 287     NSDate *verifyDate = [NSDate dateWithTimeIntervalSinceReferenceDate:500000000.0]; // April 26, 2019 at 12:33:20 PM PDT
 288
 289     SecCertificateRef leaf = SecCertificateCreateWithBytes(NULL, _leaf2048SystemTrust, sizeof(_leaf2048SystemTrust));
 290     SecCertificateRef sha2_int = SecCertificateCreateWithBytes(NULL, _int2048SystemTrust, sizeof(_int2048SystemTrust));
 291     NSArray *certs = @[ (__bridge id)leaf, (__bridge id)sha2_int];
 292     CFReleaseNull(leaf);
 293     CFReleaseNull(sha2_int);
 294
 295     SecPolicyRef serverPolicy = SecPolicyCreateSSL(true, CFSTR("www.badssl.com"));
 296     XCTAssertTrue([self runTrust:certs anchors:nil policy:serverPolicy verifyDate:verifyDate], "system trusted 2048-bit certs failed for SSL server");
 297     CFReleaseNull(serverPolicy);
 298
 299     SecPolicyRef clientPolicy = SecPolicyCreateSSL(false, NULL);
 300     XCTAssertTrue([self runTrust:certs anchors:nil policy:clientPolicy verifyDate:verifyDate], "system trusted 2048-bit certs failed for SSL client");
 301     CFReleaseNull(clientPolicy);
 302
 303     SecPolicyRef eapPolicy = SecPolicyCreateEAP(true, (__bridge CFArrayRef)@[@"*.badssl.com", @"badssl.com"]);
 304     XCTAssertTrue([self runTrust:certs anchors:nil policy:eapPolicy verifyDate:verifyDate], "system trusted 2048-bit certs failed for EAP");
 305     CFReleaseNull(eapPolicy);
 306 }
 307 #endif // !TARGET_OS_BRIDGE
 308
 309 - (void)test2048_appTrustedLeaf {
 310     NSDate *verifyDate = [NSDate dateWithTimeIntervalSinceReferenceDate:578000000.0]; // April 26, 2019 at 12:33:20 PM PDT
 311     SecCertificateRef leaf = SecCertificateCreateWithBytes(NULL, _leaf2048SSL, sizeof(_leaf2048SSL));
 312     SecCertificateRef root = SecCertificateCreateWithBytes(NULL, _rootSSL, sizeof(_rootSSL));
 313
 314     NSArray *certs = @[ (__bridge id)leaf];
 315     NSArray *anchor = @[ (__bridge id)root ];
 316     CFReleaseNull(leaf);
 317     CFReleaseNull(root);
 318
 319     SecPolicyRef serverPolicy = SecPolicyCreateSSL(true, CFSTR("example.com"));
 320     XCTAssertTrue([self runTrust:certs anchors:anchor policy:serverPolicy verifyDate:verifyDate], "anchor trusted 2048-bit cert failed for SSL server");
 321     CFReleaseNull(serverPolicy);
 322
 323     SecPolicyRef clientPolicy = SecPolicyCreateSSL(false, NULL);
 324     XCTAssertTrue([self runTrust:certs anchors:anchor policy:clientPolicy verifyDate:verifyDate], "anchor trusted 2048-bit cert failed for SSL client");
 325     CFReleaseNull(clientPolicy);
 326
 327     SecPolicyRef eapPolicy = SecPolicyCreateEAP(true, (__bridge CFArrayRef)@[@"example.com"]);
 328     XCTAssertTrue([self runTrust:certs anchors:anchor policy:eapPolicy verifyDate:verifyDate], "anchor trusted 2048-bit cert failed for EAP");
 329     CFReleaseNull(eapPolicy);
 330 }
 331
 332 #if !TARGET_OS_BRIDGE // bridgeOS doesn't have trust settings
 333 - (void)test2048_trustSettingsOnRoot_TestLeaf {
 334     NSDate *verifyDate = [NSDate dateWithTimeIntervalSinceReferenceDate:578000000.0]; // April 26, 2019 at 12:33:20 PM PDT
 335     SecCertificateRef leaf = SecCertificateCreateWithBytes(NULL, _leaf2048SSL, sizeof(_leaf2048SSL));
 336     SecCertificateRef root = SecCertificateCreateWithBytes(NULL, _rootSSL, sizeof(_rootSSL));
 337     NSArray *certs = @[ (__bridge id)leaf, (__bridge id)root ];
 338     CFReleaseNull(leaf);
 339
 340     id persistentRef = [self addTrustSettingsForCert:root];
 341
 342     SecPolicyRef serverPolicy = SecPolicyCreateSSL(true, CFSTR("example.com"));
 343     XCTAssertTrue([self runTrust:certs anchors:nil policy:serverPolicy verifyDate:verifyDate], "trust settings on root, 2048-bit leaf failed for SSL server");
 344     CFReleaseNull(serverPolicy);
 345
 346     SecPolicyRef clientPolicy = SecPolicyCreateSSL(false, NULL);
 347     XCTAssertTrue([self runTrust:certs anchors:nil policy:clientPolicy verifyDate:verifyDate], "trust settings on root, 2048-bit leaf failed for SSL client");
 348     CFReleaseNull(clientPolicy);
 349
 350     SecPolicyRef eapPolicy = SecPolicyCreateEAP(true, (__bridge CFArrayRef)@[@"example.com"]);
 351     XCTAssertTrue([self runTrust:certs anchors:nil policy:eapPolicy verifyDate:verifyDate], "trust settings on root, 2048-bit leaf failed for EAP");
 352     CFReleaseNull(eapPolicy);
 353
 354     [self removeTrustSettingsForCert:root persistentRef:persistentRef];
 355     CFReleaseNull(root);
 356 }
 357
 358 - (void)test2048_trustSettingsOnLeaf {
 359     NSDate *verifyDate = [NSDate dateWithTimeIntervalSinceReferenceDate:578000000.0]; // April 26, 2019 at 12:33:20 PM PDT
 360     SecCertificateRef leaf = SecCertificateCreateWithBytes(NULL, _leaf2048SSL, sizeof(_leaf2048SSL));
 361     NSArray *certs = @[ (__bridge id)leaf ];
 362
 363     id persistentRef = [self addTrustSettingsForCert:leaf];
 364
 365     SecPolicyRef serverPolicy = SecPolicyCreateSSL(true, CFSTR("example.com"));
 366     XCTAssertTrue([self runTrust:certs anchors:nil policy:serverPolicy verifyDate:verifyDate], "trust settings on 2048-bit leaf failed for SSL server");
 367     CFReleaseNull(serverPolicy);
 368
 369     SecPolicyRef clientPolicy = SecPolicyCreateSSL(false, NULL);
 370     XCTAssertTrue([self runTrust:certs anchors:nil policy:clientPolicy verifyDate:verifyDate], "trust settings on 2048-bit leaf failed for SSL client");
 371     CFReleaseNull(clientPolicy);
 372
 373     SecPolicyRef eapPolicy = SecPolicyCreateEAP(true, (__bridge CFArrayRef)@[@"example.com"]);
 374     XCTAssertTrue([self runTrust:certs anchors:nil policy:eapPolicy verifyDate:verifyDate], "trust settings on 2048-bit leaf failed for EAP");
 375     CFReleaseNull(eapPolicy);
 376
 377     [self removeTrustSettingsForCert:leaf persistentRef:persistentRef];
 378     CFReleaseNull(leaf);
 379 }
 380 #endif // !TARGET_OS_BRIDGE
 381
 382 @end