1 /* Copyright (c) 2016, Google Inc.
2  *
3  * Permission to use, copy, modify, and/or distribute this software for any
4  * purpose with or without fee is hereby granted, provided that the above
5  * copyright notice and this permission notice appear in all copies.
6  *
7  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14 
15 #include <vector>
16 
17 #include <assert.h>
18 #include <string.h>
19 
20 #include <openssl/bio.h>
21 #include <openssl/bytestring.h>
22 #include <openssl/crypto.h>
23 #include <openssl/digest.h>
24 #include <openssl/err.h>
25 #include <openssl/pem.h>
26 #include <openssl/pool.h>
27 #include <openssl/x509.h>
28 
29 #include "../internal.h"
30 
31 
32 static const char kCrossSigningRootPEM[] =
33     "-----BEGIN CERTIFICATE-----\n"
34     "MIICcTCCAdqgAwIBAgIIagJHiPvE0MowDQYJKoZIhvcNAQELBQAwPDEaMBgGA1UE\n"
35     "ChMRQm9yaW5nU1NMIFRFU1RJTkcxHjAcBgNVBAMTFUNyb3NzLXNpZ25pbmcgUm9v\n"
36     "dCBDQTAgFw0xNTAxMDEwMDAwMDBaGA8yMTAwMDEwMTAwMDAwMFowPDEaMBgGA1UE\n"
37     "ChMRQm9yaW5nU1NMIFRFU1RJTkcxHjAcBgNVBAMTFUNyb3NzLXNpZ25pbmcgUm9v\n"
38     "dCBDQTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAwo3qFvSB9Zmlbpzn9wJp\n"
39     "ikI75Rxkatez8VkLqyxbOhPYl2Haz8F5p1gDG96dCI6jcLGgu3AKT9uhEQyyUko5\n"
40     "EKYasazSeA9CQrdyhPg0mkTYVETnPM1W/ebid1YtqQbq1CMWlq2aTDoSGAReGFKP\n"
41     "RTdXAbuAXzpCfi/d8LqV13UCAwEAAaN6MHgwDgYDVR0PAQH/BAQDAgIEMB0GA1Ud\n"
42     "JQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAPBgNVHRMBAf8EBTADAQH/MBkGA1Ud\n"
43     "DgQSBBBHKHC7V3Z/3oLvEZx0RZRwMBsGA1UdIwQUMBKAEEcocLtXdn/egu8RnHRF\n"
44     "lHAwDQYJKoZIhvcNAQELBQADgYEAnglibsy6mGtpIXivtlcz4zIEnHw/lNW+r/eC\n"
45     "CY7evZTmOoOuC/x9SS3MF9vawt1HFUummWM6ZgErqVBOXIB4//ykrcCgf5ZbF5Hr\n"
46     "+3EFprKhBqYiXdD8hpBkrBoXwn85LPYWNd2TceCrx0YtLIprE2R5MB2RIq8y4Jk3\n"
47     "YFXvkME=\n"
48     "-----END CERTIFICATE-----\n";
49 
50 static const char kRootCAPEM[] =
51     "-----BEGIN CERTIFICATE-----\n"
52     "MIICVTCCAb6gAwIBAgIIAj5CwoHlWuYwDQYJKoZIhvcNAQELBQAwLjEaMBgGA1UE\n"
53     "ChMRQm9yaW5nU1NMIFRFU1RJTkcxEDAOBgNVBAMTB1Jvb3QgQ0EwIBcNMTUwMTAx\n"
54     "MDAwMDAwWhgPMjEwMDAxMDEwMDAwMDBaMC4xGjAYBgNVBAoTEUJvcmluZ1NTTCBU\n"
55     "RVNUSU5HMRAwDgYDVQQDEwdSb290IENBMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCB\n"
56     "iQKBgQDpDn8RDOZa5oaDcPZRBy4CeBH1siSSOO4mYgLHlPE+oXdqwI/VImi2XeJM\n"
57     "2uCFETXCknJJjYG0iJdrt/yyRFvZTQZw+QzGj+mz36NqhGxDWb6dstB2m8PX+plZ\n"
58     "w7jl81MDvUnWs8yiQ/6twgu5AbhWKZQDJKcNKCEpqa6UW0r5nwIDAQABo3oweDAO\n"
59     "BgNVHQ8BAf8EBAMCAgQwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMA8G\n"
60     "A1UdEwEB/wQFMAMBAf8wGQYDVR0OBBIEEEA31wH7QC+4HH5UBCeMWQEwGwYDVR0j\n"
61     "BBQwEoAQQDfXAftAL7gcflQEJ4xZATANBgkqhkiG9w0BAQsFAAOBgQDXylEK77Za\n"
62     "kKeY6ZerrScWyZhrjIGtHFu09qVpdJEzrk87k2G7iHHR9CAvSofCgEExKtWNS9dN\n"
63     "+9WiZp/U48iHLk7qaYXdEuO07No4BYtXn+lkOykE+FUxmA4wvOF1cTd2tdj3MzX2\n"
64     "kfGIBAYhzGZWhY3JbhIfTEfY1PNM1pWChQ==\n"
65     "-----END CERTIFICATE-----\n";
66 
67 static const char kRootCrossSignedPEM[] =
68     "-----BEGIN CERTIFICATE-----\n"
69     "MIICYzCCAcygAwIBAgIIAj5CwoHlWuYwDQYJKoZIhvcNAQELBQAwPDEaMBgGA1UE\n"
70     "ChMRQm9yaW5nU1NMIFRFU1RJTkcxHjAcBgNVBAMTFUNyb3NzLXNpZ25pbmcgUm9v\n"
71     "dCBDQTAgFw0xNTAxMDEwMDAwMDBaGA8yMTAwMDEwMTAwMDAwMFowLjEaMBgGA1UE\n"
72     "ChMRQm9yaW5nU1NMIFRFU1RJTkcxEDAOBgNVBAMTB1Jvb3QgQ0EwgZ8wDQYJKoZI\n"
73     "hvcNAQEBBQADgY0AMIGJAoGBAOkOfxEM5lrmhoNw9lEHLgJ4EfWyJJI47iZiAseU\n"
74     "8T6hd2rAj9UiaLZd4kza4IURNcKSckmNgbSIl2u3/LJEW9lNBnD5DMaP6bPfo2qE\n"
75     "bENZvp2y0Habw9f6mVnDuOXzUwO9SdazzKJD/q3CC7kBuFYplAMkpw0oISmprpRb\n"
76     "SvmfAgMBAAGjejB4MA4GA1UdDwEB/wQEAwICBDAdBgNVHSUEFjAUBggrBgEFBQcD\n"
77     "AQYIKwYBBQUHAwIwDwYDVR0TAQH/BAUwAwEB/zAZBgNVHQ4EEgQQQDfXAftAL7gc\n"
78     "flQEJ4xZATAbBgNVHSMEFDASgBBHKHC7V3Z/3oLvEZx0RZRwMA0GCSqGSIb3DQEB\n"
79     "CwUAA4GBAErTxYJ0en9HVRHAAr5OO5wuk5Iq3VMc79TMyQLCXVL8YH8Uk7KEwv+q\n"
80     "9MEKZv2eR/Vfm4HlXlUuIqfgUXbwrAYC/YVVX86Wnbpy/jc73NYVCq8FEZeO+0XU\n"
81     "90SWAPDdp+iL7aZdimnMtG1qlM1edmz8AKbrhN/R3IbA2CL0nCWV\n"
82     "-----END CERTIFICATE-----\n";
83 
84 static const char kIntermediatePEM[] =
85     "-----BEGIN CERTIFICATE-----\n"
86     "MIICXjCCAcegAwIBAgIJAKJMH+7rscPcMA0GCSqGSIb3DQEBCwUAMC4xGjAYBgNV\n"
87     "BAoTEUJvcmluZ1NTTCBURVNUSU5HMRAwDgYDVQQDEwdSb290IENBMCAXDTE1MDEw\n"
88     "MTAwMDAwMFoYDzIxMDAwMTAxMDAwMDAwWjA2MRowGAYDVQQKExFCb3JpbmdTU0wg\n"
89     "VEVTVElORzEYMBYGA1UEAxMPSW50ZXJtZWRpYXRlIENBMIGfMA0GCSqGSIb3DQEB\n"
90     "AQUAA4GNADCBiQKBgQC7YtI0l8ocTYJ0gKyXTtPL4iMJCNY4OcxXl48jkncVG1Hl\n"
91     "blicgNUa1r9m9YFtVkxvBinb8dXiUpEGhVg4awRPDcatlsBSEBuJkiZGYbRcAmSu\n"
92     "CmZYnf6u3aYQ18SU8WqVERPpE4cwVVs+6kwlzRw0+XDoZAczu8ZezVhCUc6NbQID\n"
93     "AQABo3oweDAOBgNVHQ8BAf8EBAMCAgQwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsG\n"
94     "AQUFBwMCMA8GA1UdEwEB/wQFMAMBAf8wGQYDVR0OBBIEEIwaaKi1dttdV3sfjRSy\n"
95     "BqMwGwYDVR0jBBQwEoAQQDfXAftAL7gcflQEJ4xZATANBgkqhkiG9w0BAQsFAAOB\n"
96     "gQCvnolNWEHuQS8PFVVyuLR+FKBeUUdrVbSfHSzTqNAqQGp0C9fk5oCzDq6ZgTfY\n"
97     "ESXM4cJhb3IAnW0UM0NFsYSKQJ50JZL2L3z5ZLQhHdbs4RmODGoC40BVdnJ4/qgB\n"
98     "aGSh09eQRvAVmbVCviDK2ipkWNegdyI19jFfNP5uIkGlYg==\n"
99     "-----END CERTIFICATE-----\n";
100 
101 static const char kIntermediateSelfSignedPEM[] =
102     "-----BEGIN CERTIFICATE-----\n"
103     "MIICZjCCAc+gAwIBAgIJAKJMH+7rscPcMA0GCSqGSIb3DQEBCwUAMDYxGjAYBgNV\n"
104     "BAoTEUJvcmluZ1NTTCBURVNUSU5HMRgwFgYDVQQDEw9JbnRlcm1lZGlhdGUgQ0Ew\n"
105     "IBcNMTUwMTAxMDAwMDAwWhgPMjEwMDAxMDEwMDAwMDBaMDYxGjAYBgNVBAoTEUJv\n"
106     "cmluZ1NTTCBURVNUSU5HMRgwFgYDVQQDEw9JbnRlcm1lZGlhdGUgQ0EwgZ8wDQYJ\n"
107     "KoZIhvcNAQEBBQADgY0AMIGJAoGBALti0jSXyhxNgnSArJdO08viIwkI1jg5zFeX\n"
108     "jyOSdxUbUeVuWJyA1RrWv2b1gW1WTG8GKdvx1eJSkQaFWDhrBE8Nxq2WwFIQG4mS\n"
109     "JkZhtFwCZK4KZlid/q7dphDXxJTxapURE+kThzBVWz7qTCXNHDT5cOhkBzO7xl7N\n"
110     "WEJRzo1tAgMBAAGjejB4MA4GA1UdDwEB/wQEAwICBDAdBgNVHSUEFjAUBggrBgEF\n"
111     "BQcDAQYIKwYBBQUHAwIwDwYDVR0TAQH/BAUwAwEB/zAZBgNVHQ4EEgQQjBpoqLV2\n"
112     "211Xex+NFLIGozAbBgNVHSMEFDASgBCMGmiotXbbXVd7H40UsgajMA0GCSqGSIb3\n"
113     "DQEBCwUAA4GBALcccSrAQ0/EqQBsx0ZDTUydHXXNP2DrUkpUKmAXIe8McqIVSlkT\n"
114     "6H4xz7z8VRKBo9j+drjjtCw2i0CQc8aOLxRb5WJ8eVLnaW2XRlUqAzhF0CrulfVI\n"
115     "E4Vs6ZLU+fra1WAuIj6qFiigRja+3YkZArG8tMA9vtlhTX/g7YBZIkqH\n"
116     "-----END CERTIFICATE-----\n";
117 
118 static const char kLeafPEM[] =
119     "-----BEGIN CERTIFICATE-----\n"
120     "MIICXjCCAcegAwIBAgIIWjO48ufpunYwDQYJKoZIhvcNAQELBQAwNjEaMBgGA1UE\n"
121     "ChMRQm9yaW5nU1NMIFRFU1RJTkcxGDAWBgNVBAMTD0ludGVybWVkaWF0ZSBDQTAg\n"
122     "Fw0xNTAxMDEwMDAwMDBaGA8yMTAwMDEwMTAwMDAwMFowMjEaMBgGA1UEChMRQm9y\n"
123     "aW5nU1NMIFRFU1RJTkcxFDASBgNVBAMTC2V4YW1wbGUuY29tMIGfMA0GCSqGSIb3\n"
124     "DQEBAQUAA4GNADCBiQKBgQDD0U0ZYgqShJ7oOjsyNKyVXEHqeafmk/bAoPqY/h1c\n"
125     "oPw2E8KmeqiUSoTPjG5IXSblOxcqpbAXgnjPzo8DI3GNMhAf8SYNYsoH7gc7Uy7j\n"
126     "5x8bUrisGnuTHqkqH6d4/e7ETJ7i3CpR8bvK16DggEvQTudLipz8FBHtYhFakfdh\n"
127     "TwIDAQABo3cwdTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEG\n"
128     "CCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwGQYDVR0OBBIEEKN5pvbur7mlXjeMEYA0\n"
129     "4nUwGwYDVR0jBBQwEoAQjBpoqLV2211Xex+NFLIGozANBgkqhkiG9w0BAQsFAAOB\n"
130     "gQBj/p+JChp//LnXWC1k121LM/ii7hFzQzMrt70bny406SGz9jAjaPOX4S3gt38y\n"
131     "rhjpPukBlSzgQXFg66y6q5qp1nQTD1Cw6NkKBe9WuBlY3iYfmsf7WT8nhlT1CttU\n"
132     "xNCwyMX9mtdXdQicOfNjIGUCD5OLV5PgHFPRKiHHioBAhg==\n"
133     "-----END CERTIFICATE-----\n";
134 
135 static const char kLeafNoKeyUsagePEM[] =
136     "-----BEGIN CERTIFICATE-----\n"
137     "MIICNTCCAZ6gAwIBAgIJAIFQGaLQ0G2mMA0GCSqGSIb3DQEBCwUAMDYxGjAYBgNV\n"
138     "BAoTEUJvcmluZ1NTTCBURVNUSU5HMRgwFgYDVQQDEw9JbnRlcm1lZGlhdGUgQ0Ew\n"
139     "IBcNMTUwMTAxMDAwMDAwWhgPMjEwMDAxMDEwMDAwMDBaMDcxGjAYBgNVBAoTEUJv\n"
140     "cmluZ1NTTCBURVNUSU5HMRkwFwYDVQQDExBldmlsLmV4YW1wbGUuY29tMIGfMA0G\n"
141     "CSqGSIb3DQEBAQUAA4GNADCBiQKBgQDOKoZe75NPz77EOaMMl4/0s3PyQw++zJvp\n"
142     "ejHAxZiTPCJgMbEHLrSzNoHdopg+CLUH5bE4wTXM8w9Inv5P8OAFJt7gJuPUunmk\n"
143     "j+NoU3QfzOR6BroePcz1vXX9jyVHRs087M/sLqWRHu9IR+/A+UTcBaWaFiDVUxtJ\n"
144     "YOwFMwjNPQIDAQABo0gwRjAMBgNVHRMBAf8EAjAAMBkGA1UdDgQSBBBJfLEUWHq1\n"
145     "27rZ1AVx2J5GMBsGA1UdIwQUMBKAEIwaaKi1dttdV3sfjRSyBqMwDQYJKoZIhvcN\n"
146     "AQELBQADgYEALVKN2Y3LZJOtu6SxFIYKxbLaXhTGTdIjxipZhmbBRDFjbZjZZOTe\n"
147     "6Oo+VDNPYco4rBexK7umYXJyfTqoY0E8dbiImhTcGTEj7OAB3DbBomgU1AYe+t2D\n"
148     "uwBqh4Y3Eto+Zn4pMVsxGEfUpjzjZDel7bN1/oU/9KWPpDfywfUmjgk=\n"
149     "-----END CERTIFICATE-----\n";
150 
151 static const char kForgeryPEM[] =
152     "-----BEGIN CERTIFICATE-----\n"
153     "MIICZzCCAdCgAwIBAgIIdTlMzQoKkeMwDQYJKoZIhvcNAQELBQAwNzEaMBgGA1UE\n"
154     "ChMRQm9yaW5nU1NMIFRFU1RJTkcxGTAXBgNVBAMTEGV2aWwuZXhhbXBsZS5jb20w\n"
155     "IBcNMTUwMTAxMDAwMDAwWhgPMjEwMDAxMDEwMDAwMDBaMDoxGjAYBgNVBAoTEUJv\n"
156     "cmluZ1NTTCBURVNUSU5HMRwwGgYDVQQDExNmb3JnZXJ5LmV4YW1wbGUuY29tMIGf\n"
157     "MA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDADTwruBQZGb7Ay6s9HiYv5d1lwtEy\n"
158     "xQdA2Sy8Rn8uA20Q4KgqwVY7wzIZ+z5Butrsmwb70gdG1XU+yRaDeE7XVoW6jSpm\n"
159     "0sw35/5vJbTcL4THEFbnX0OPZnvpuZDFUkvVtq5kxpDWsVyM24G8EEq7kPih3Sa3\n"
160     "OMhXVXF8kso6UQIDAQABo3cwdTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI\n"
161     "KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwGQYDVR0OBBIEEEYJ/WHM\n"
162     "8p64erPWIg4/liwwGwYDVR0jBBQwEoAQSXyxFFh6tdu62dQFcdieRjANBgkqhkiG\n"
163     "9w0BAQsFAAOBgQA+zH7bHPElWRWJvjxDqRexmYLn+D3Aivs8XgXQJsM94W0EzSUf\n"
164     "DSLfRgaQwcb2gg2xpDFoG+W0vc6O651uF23WGt5JaFFJJxqjII05IexfCNhuPmp4\n"
165     "4UZAXPttuJXpn74IY1tuouaM06B3vXKZR+/ityKmfJvSwxacmFcK+2ziAg==\n"
166     "-----END CERTIFICATE-----\n";
167 
168 // kExamplePSSCert is an example RSA-PSS self-signed certificate, signed with
169 // the default hash functions.
170 static const char kExamplePSSCert[] =
171     "-----BEGIN CERTIFICATE-----\n"
172     "MIICYjCCAcagAwIBAgIJAI3qUyT6SIfzMBIGCSqGSIb3DQEBCjAFogMCAWowRTEL\n"
173     "MAkGA1UEBhMCQVUxEzARBgNVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoMGEludGVy\n"
174     "bmV0IFdpZGdpdHMgUHR5IEx0ZDAeFw0xNDEwMDkxOTA5NTVaFw0xNTEwMDkxOTA5\n"
175     "NTVaMEUxCzAJBgNVBAYTAkFVMRMwEQYDVQQIDApTb21lLVN0YXRlMSEwHwYDVQQK\n"
176     "DBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQwgZ8wDQYJKoZIhvcNAQEBBQADgY0A\n"
177     "MIGJAoGBAPi4bIO0vNmoV8CltFl2jFQdeesiUgR+0zfrQf2D+fCmhRU0dXFahKg8\n"
178     "0u9aTtPel4rd/7vPCqqGkr64UOTNb4AzMHYTj8p73OxaymPHAyXvqIqDWHYg+hZ3\n"
179     "13mSYwFIGth7Z/FSVUlO1m5KXNd6NzYM3t2PROjCpywrta9kS2EHAgMBAAGjUDBO\n"
180     "MB0GA1UdDgQWBBTQQfuJQR6nrVrsNF1JEflVgXgfEzAfBgNVHSMEGDAWgBTQQfuJ\n"
181     "QR6nrVrsNF1JEflVgXgfEzAMBgNVHRMEBTADAQH/MBIGCSqGSIb3DQEBCjAFogMC\n"
182     "AWoDgYEASUy2RZcgNbNQZA0/7F+V1YTLEXwD16bm+iSVnzGwtexmQVEYIZG74K/w\n"
183     "xbdZQdTbpNJkp1QPjPfh0zsatw6dmt5QoZ8K8No0DjR9dgf+Wvv5WJvJUIQBoAVN\n"
184     "Z0IL+OQFz6+LcTHxD27JJCebrATXZA0wThGTQDm7crL+a+SujBY=\n"
185     "-----END CERTIFICATE-----\n";
186 
187 // kBadPSSCertPEM is a self-signed RSA-PSS certificate with bad parameters.
188 static const char kBadPSSCertPEM[] =
189     "-----BEGIN CERTIFICATE-----\n"
190     "MIIDdjCCAjqgAwIBAgIJANcwZLyfEv7DMD4GCSqGSIb3DQEBCjAxoA0wCwYJYIZI\n"
191     "AWUDBAIBoRowGAYJKoZIhvcNAQEIMAsGCWCGSAFlAwQCAaIEAgIA3jAnMSUwIwYD\n"
192     "VQQDDBxUZXN0IEludmFsaWQgUFNTIGNlcnRpZmljYXRlMB4XDTE1MTEwNDE2MDIz\n"
193     "NVoXDTE1MTIwNDE2MDIzNVowJzElMCMGA1UEAwwcVGVzdCBJbnZhbGlkIFBTUyBj\n"
194     "ZXJ0aWZpY2F0ZTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMTaM7WH\n"
195     "qVCAGAIA+zL1KWvvASTrhlq+1ePdO7wsrWX2KiYoTYrJYTnxhLnn0wrHqApt79nL\n"
196     "IBG7cfShyZqFHOY/IzlYPMVt+gPo293gw96Fds5JBsjhjkyGnOyr9OUntFqvxDbT\n"
197     "IIFU7o9IdxD4edaqjRv+fegVE+B79pDk4s0ujsk6dULtCg9Rst0ucGFo19mr+b7k\n"
198     "dbfn8pZ72ZNDJPueVdrUAWw9oll61UcYfk75XdrLk6JlL41GrYHc8KlfXf43gGQq\n"
199     "QfrpHkg4Ih2cI6Wt2nhFGAzrlcorzLliQIUJRIhM8h4IgDfpBpaPdVQLqS2pFbXa\n"
200     "5eQjqiyJwak2vJ8CAwEAAaNQME4wHQYDVR0OBBYEFCt180N4oGUt5LbzBwQ4Ia+2\n"
201     "4V97MB8GA1UdIwQYMBaAFCt180N4oGUt5LbzBwQ4Ia+24V97MAwGA1UdEwQFMAMB\n"
202     "Af8wMQYJKoZIhvcNAQEKMCSgDTALBglghkgBZQMEAgGhDTALBgkqhkiG9w0BAQii\n"
203     "BAICAN4DggEBAAjBtm90lGxgddjc4Xu/nbXXFHVs2zVcHv/mqOZoQkGB9r/BVgLb\n"
204     "xhHrFZ2pHGElbUYPfifdS9ztB73e1d4J+P29o0yBqfd4/wGAc/JA8qgn6AAEO/Xn\n"
205     "plhFeTRJQtLZVl75CkHXgUGUd3h+ADvKtcBuW9dSUncaUrgNKR8u/h/2sMG38RWY\n"
206     "DzBddC/66YTa3r7KkVUfW7yqRQfELiGKdcm+bjlTEMsvS+EhHup9CzbpoCx2Fx9p\n"
207     "NPtFY3yEObQhmL1JyoCRWqBE75GzFPbRaiux5UpEkns+i3trkGssZzsOuVqHNTNZ\n"
208     "lC9+9hPHIoc9UMmAQNo1vGIW3NWVoeGbaJ8=\n"
209     "-----END CERTIFICATE-----\n";
210 
211 static const char kRSAKey[] =
212     "-----BEGIN RSA PRIVATE KEY-----\n"
213     "MIICXgIBAAKBgQDYK8imMuRi/03z0K1Zi0WnvfFHvwlYeyK9Na6XJYaUoIDAtB92\n"
214     "kWdGMdAQhLciHnAjkXLI6W15OoV3gA/ElRZ1xUpxTMhjP6PyY5wqT5r6y8FxbiiF\n"
215     "KKAnHmUcrgfVW28tQ+0rkLGMryRtrukXOgXBv7gcrmU7G1jC2a7WqmeI8QIDAQAB\n"
216     "AoGBAIBy09Fd4DOq/Ijp8HeKuCMKTHqTW1xGHshLQ6jwVV2vWZIn9aIgmDsvkjCe\n"
217     "i6ssZvnbjVcwzSoByhjN8ZCf/i15HECWDFFh6gt0P5z0MnChwzZmvatV/FXCT0j+\n"
218     "WmGNB/gkehKjGXLLcjTb6dRYVJSCZhVuOLLcbWIV10gggJQBAkEA8S8sGe4ezyyZ\n"
219     "m4e9r95g6s43kPqtj5rewTsUxt+2n4eVodD+ZUlCULWVNAFLkYRTBCASlSrm9Xhj\n"
220     "QpmWAHJUkQJBAOVzQdFUaewLtdOJoPCtpYoY1zd22eae8TQEmpGOR11L6kbxLQsk\n"
221     "aMly/DOnOaa82tqAGTdqDEZgSNmCeKKknmECQAvpnY8GUOVAubGR6c+W90iBuQLj\n"
222     "LtFp/9ihd2w/PoDwrHZaoUYVcT4VSfJQog/k7kjE4MYXYWL8eEKg3WTWQNECQQDk\n"
223     "104Wi91Umd1PzF0ijd2jXOERJU1wEKe6XLkYYNHWQAe5l4J4MWj9OdxFXAxIuuR/\n"
224     "tfDwbqkta4xcux67//khAkEAvvRXLHTaa6VFzTaiiO8SaFsHV3lQyXOtMrBpB5jd\n"
225     "moZWgjHvB2W9Ckn7sDqsPB+U2tyX0joDdQEyuiMECDY8oQ==\n"
226     "-----END RSA PRIVATE KEY-----\n";
227 
228 // kCRLTestRoot is a test root certificate. It has private key:
229 //
230 //     -----BEGIN RSA PRIVATE KEY-----
231 //     MIIEpAIBAAKCAQEAo16WiLWZuaymsD8n5SKPmxV1y6jjgr3BS/dUBpbrzd1aeFzN
232 //     lI8l2jfAnzUyp+I21RQ+nh/MhqjGElkTtK9xMn1Y+S9GMRh+5R/Du0iCb1tCZIPY
233 //     07Tgrb0KMNWe0v2QKVVruuYSgxIWodBfxlKO64Z8AJ5IbnWpuRqO6rctN9qUoMlT
234 //     IAB6dL4G0tDJ/PGFWOJYwOMEIX54bly2wgyYJVBKiRRt4f7n8H922qmvPNA9idmX
235 //     9G1VAtgV6x97XXi7ULORIQvn9lVQF6nTYDBJhyuPB+mLThbLP2o9orxGx7aCtnnB
236 //     ZUIxUvHNOI0FaSaZH7Fi0xsZ/GkG2HZe7ImPJwIDAQABAoIBAQCJF9MTHfHGkk+/
237 //     DwCXlA0Wg0e6hBuHl10iNobYkMWIl/xXjOknhYiqOqb181py76472SVC5ERprC+r
238 //     Lf0PXzqKuA117mnkwT2bYLCL9Skf8WEhoFLQNbVlloF6wYjqXcYgKYKh8HgQbZl4
239 //     aLg2YQl2NADTNABsUWj/4H2WEelsODVviqfFs725lFg9KHDI8zxAZXLzDt/M9uVL
240 //     GxJiX12tr0AwaeAFZ1oPM/y+LznM3N3+Ht3jHHw3jZ/u8Z1RdAmdpu3bZ6tbwGBr
241 //     9edsH5rKkm9aBvMrY7eX5VHqaqyRNFyG152ZOJh4XiiFG7EmgTPCpaHo50Y018Re
242 //     grVtk+FBAoGBANY3lY+V8ZOwMxSHes+kTnoimHO5Ob7nxrOC71i27x+4HHsYUeAr
243 //     /zOOghiDIn+oNkuiX5CIOWZKx159Bp65CPpCbTb/fh+HYnSgXFgCw7XptycO7LXM
244 //     5GwR5jSfpfzBFdYxjxoUzDMFBwTEYRTm0HkUHkH+s+ajjw5wqqbcGLcfAoGBAMM8
245 //     DKW6Tb66xsf708f0jonAjKYTLZ+WOcwsBEWSFHoY8dUjvW5gqx5acHTEsc5ZTeh4
246 //     BCFLa+Mn9cuJWVJNs09k7Xb2PNl92HQ4GN2vbdkJhExbkT6oLDHg1hVD0w8KLfz1
247 //     lTAW6pS+6CdOHMEJpvqx89EgU/1GgIQ1fXYczE75AoGAKeJoXdDFkUjsU+FBhAPu
248 //     TDcjc80Nm2QaF9NMFR5/lsYa236f06MGnQAKM9zADBHJu/Qdl1brUjLg1HrBppsr
249 //     RDNkw1IlSOjhuUf5hkPUHGd8Jijm440SRIcjabqla8wdBupdvo2+d2NOQgJbsQiI
250 //     ToQ+fkzcxAXK3Nnuo/1436UCgYBjLH7UNOZHS8OsVM0I1r8NVKVdu4JCfeJQR8/H
251 //     s2P5ffBir+wLRMnH+nMDreMQiibcPxMCArkERAlE4jlgaJ38Z62E76KLbLTmnJRt
252 //     EC9Bv+bXjvAiHvWMRMUbOj/ddPNVez7Uld+FvdBaHwDWQlvzHzBWfBCOKSEhh7Z6
253 //     qDhUqQKBgQDPMDx2i5rfmQp3imV9xUcCkIRsyYQVf8Eo7NV07IdUy/otmksgn4Zt
254 //     Lbf3v2dvxOpTNTONWjp2c+iUQo8QxJCZr5Sfb21oQ9Ktcrmc/CY7LeBVDibXwxdM
255 //     vRG8kBzvslFWh7REzC3u06GSVhyKDfW93kN2cKVwGoahRlhj7oHuZQ==
256 //     -----END RSA PRIVATE KEY-----
257 static const char kCRLTestRoot[] =
258     "-----BEGIN CERTIFICATE-----\n"
259     "MIIDbzCCAlegAwIBAgIJAODri7v0dDUFMA0GCSqGSIb3DQEBCwUAME4xCzAJBgNV\n"
260     "BAYTAlVTMRMwEQYDVQQIDApDYWxpZm9ybmlhMRYwFAYDVQQHDA1Nb3VudGFpbiBW\n"
261     "aWV3MRIwEAYDVQQKDAlCb3JpbmdTU0wwHhcNMTYwOTI2MTUwNjI2WhcNMjYwOTI0\n"
262     "MTUwNjI2WjBOMQswCQYDVQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQG\n"
263     "A1UEBwwNTW91bnRhaW4gVmlldzESMBAGA1UECgwJQm9yaW5nU1NMMIIBIjANBgkq\n"
264     "hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAo16WiLWZuaymsD8n5SKPmxV1y6jjgr3B\n"
265     "S/dUBpbrzd1aeFzNlI8l2jfAnzUyp+I21RQ+nh/MhqjGElkTtK9xMn1Y+S9GMRh+\n"
266     "5R/Du0iCb1tCZIPY07Tgrb0KMNWe0v2QKVVruuYSgxIWodBfxlKO64Z8AJ5IbnWp\n"
267     "uRqO6rctN9qUoMlTIAB6dL4G0tDJ/PGFWOJYwOMEIX54bly2wgyYJVBKiRRt4f7n\n"
268     "8H922qmvPNA9idmX9G1VAtgV6x97XXi7ULORIQvn9lVQF6nTYDBJhyuPB+mLThbL\n"
269     "P2o9orxGx7aCtnnBZUIxUvHNOI0FaSaZH7Fi0xsZ/GkG2HZe7ImPJwIDAQABo1Aw\n"
270     "TjAdBgNVHQ4EFgQUWPt3N5cZ/CRvubbrkqfBnAqhq94wHwYDVR0jBBgwFoAUWPt3\n"
271     "N5cZ/CRvubbrkqfBnAqhq94wDAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQsFAAOC\n"
272     "AQEAORu6M0MOwXy+3VEBwNilfTxyqDfruQsc1jA4PT8Oe8zora1WxE1JB4q2FJOz\n"
273     "EAuM3H/NXvEnBuN+ITvKZAJUfm4NKX97qmjMJwLKWe1gVv+VQTr63aR7mgWJReQN\n"
274     "XdMztlVeZs2dppV6uEg3ia1X0G7LARxGpA9ETbMyCpb39XxlYuTClcbA5ftDN99B\n"
275     "3Xg9KNdd++Ew22O3HWRDvdDpTO/JkzQfzi3sYwUtzMEonENhczJhGf7bQMmvL/w5\n"
276     "24Wxj4Z7KzzWIHsNqE/RIs6RV3fcW61j/mRgW2XyoWnMVeBzvcJr9NXp4VQYmFPw\n"
277     "amd8GKMZQvP0ufGnUn7D7uartA==\n"
278     "-----END CERTIFICATE-----\n";
279 
280 static const char kCRLTestLeaf[] =
281     "-----BEGIN CERTIFICATE-----\n"
282     "MIIDkDCCAnigAwIBAgICEAAwDQYJKoZIhvcNAQELBQAwTjELMAkGA1UEBhMCVVMx\n"
283     "EzARBgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDU1vdW50YWluIFZpZXcxEjAQ\n"
284     "BgNVBAoMCUJvcmluZ1NTTDAeFw0xNjA5MjYxNTA4MzFaFw0xNzA5MjYxNTA4MzFa\n"
285     "MEsxCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApDYWxpZm9ybmlhMRIwEAYDVQQKDAlC\n"
286     "b3JpbmdTU0wxEzARBgNVBAMMCmJvcmluZy5zc2wwggEiMA0GCSqGSIb3DQEBAQUA\n"
287     "A4IBDwAwggEKAoIBAQDc5v1S1M0W+QWM+raWfO0LH8uvqEwuJQgODqMaGnSlWUx9\n"
288     "8iQcnWfjyPja3lWg9K62hSOFDuSyEkysKHDxijz5R93CfLcfnVXjWQDJe7EJTTDP\n"
289     "ozEvxN6RjAeYv7CF000euYr3QT5iyBjg76+bon1p0jHZBJeNPP1KqGYgyxp+hzpx\n"
290     "e0gZmTlGAXd8JQK4v8kpdYwD6PPifFL/jpmQpqOtQmH/6zcLjY4ojmqpEdBqIKIX\n"
291     "+saA29hMq0+NK3K+wgg31RU+cVWxu3tLOIiesETkeDgArjWRS1Vkzbi4v9SJxtNu\n"
292     "OZuAxWiynRJw3JwH/OFHYZIvQqz68ZBoj96cepjPAgMBAAGjezB5MAkGA1UdEwQC\n"
293     "MAAwLAYJYIZIAYb4QgENBB8WHU9wZW5TU0wgR2VuZXJhdGVkIENlcnRpZmljYXRl\n"
294     "MB0GA1UdDgQWBBTGn0OVVh/aoYt0bvEKG+PIERqnDzAfBgNVHSMEGDAWgBRY+3c3\n"
295     "lxn8JG+5tuuSp8GcCqGr3jANBgkqhkiG9w0BAQsFAAOCAQEAd2nM8gCQN2Dc8QJw\n"
296     "XSZXyuI3DBGGCHcay/3iXu0JvTC3EiQo8J6Djv7WLI0N5KH8mkm40u89fJAB2lLZ\n"
297     "ShuHVtcC182bOKnePgwp9CNwQ21p0rDEu/P3X46ZvFgdxx82E9xLa0tBB8PiPDWh\n"
298     "lV16jbaKTgX5AZqjnsyjR5o9/mbZVupZJXx5Syq+XA8qiJfstSYJs4KyKK9UOjql\n"
299     "ICkJVKpi2ahDBqX4MOH4SLfzVk8pqSpviS6yaA1RXqjpkxiN45WWaXDldVHMSkhC\n"
300     "5CNXsXi4b1nAntu89crwSLA3rEwzCWeYj+BX7e1T9rr3oJdwOU/2KQtW1js1yQUG\n"
301     "tjJMFw==\n"
302     "-----END CERTIFICATE-----\n";
303 
304 static const char kBasicCRL[] =
305     "-----BEGIN X509 CRL-----\n"
306     "MIIBpzCBkAIBATANBgkqhkiG9w0BAQsFADBOMQswCQYDVQQGEwJVUzETMBEGA1UE\n"
307     "CAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzESMBAGA1UECgwJ\n"
308     "Qm9yaW5nU1NMFw0xNjA5MjYxNTEwNTVaFw0xNjEwMjYxNTEwNTVaoA4wDDAKBgNV\n"
309     "HRQEAwIBATANBgkqhkiG9w0BAQsFAAOCAQEAnrBKKgvd9x9zwK9rtUvVeFeJ7+LN\n"
310     "ZEAc+a5oxpPNEsJx6hXoApYEbzXMxuWBQoCs5iEBycSGudct21L+MVf27M38KrWo\n"
311     "eOkq0a2siqViQZO2Fb/SUFR0k9zb8xl86Zf65lgPplALun0bV/HT7MJcl04Tc4os\n"
312     "dsAReBs5nqTGNEd5AlC1iKHvQZkM//MD51DspKnDpsDiUVi54h9C1SpfZmX8H2Vv\n"
313     "diyu0fZ/bPAM3VAGawatf/SyWfBMyKpoPXEG39oAzmjjOj8en82psn7m474IGaho\n"
314     "/vBbhl1ms5qQiLYPjm4YELtnXQoFyC72tBjbdFd/ZE9k4CNKDbxFUXFbkw==\n"
315     "-----END X509 CRL-----\n";
316 
317 static const char kRevokedCRL[] =
318     "-----BEGIN X509 CRL-----\n"
319     "MIIBvjCBpwIBATANBgkqhkiG9w0BAQsFADBOMQswCQYDVQQGEwJVUzETMBEGA1UE\n"
320     "CAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzESMBAGA1UECgwJ\n"
321     "Qm9yaW5nU1NMFw0xNjA5MjYxNTEyNDRaFw0xNjEwMjYxNTEyNDRaMBUwEwICEAAX\n"
322     "DTE2MDkyNjE1MTIyNlqgDjAMMAoGA1UdFAQDAgECMA0GCSqGSIb3DQEBCwUAA4IB\n"
323     "AQCUGaM4DcWzlQKrcZvI8TMeR8BpsvQeo5BoI/XZu2a8h//PyRyMwYeaOM+3zl0d\n"
324     "sjgCT8b3C1FPgT+P2Lkowv7rJ+FHJRNQkogr+RuqCSPTq65ha4WKlRGWkMFybzVH\n"
325     "NloxC+aU3lgp/NlX9yUtfqYmJek1CDrOOGPrAEAwj1l/BUeYKNGqfBWYJQtPJu+5\n"
326     "OaSvIYGpETCZJscUWODmLEb/O3DM438vLvxonwGqXqS0KX37+CHpUlyhnSovxXxp\n"
327     "Pz4aF+L7OtczxL0GYtD2fR9B7TDMqsNmHXgQrixvvOY7MUdLGbd4RfJL3yA53hyO\n"
328     "xzfKY2TzxLiOmctG0hXFkH5J\n"
329     "-----END X509 CRL-----\n";
330 
331 static const char kBadIssuerCRL[] =
332     "-----BEGIN X509 CRL-----\n"
333     "MIIBwjCBqwIBATANBgkqhkiG9w0BAQsFADBSMQswCQYDVQQGEwJVUzETMBEGA1UE\n"
334     "CAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzEWMBQGA1UECgwN\n"
335     "Tm90IEJvcmluZ1NTTBcNMTYwOTI2MTUxMjQ0WhcNMTYxMDI2MTUxMjQ0WjAVMBMC\n"
336     "AhAAFw0xNjA5MjYxNTEyMjZaoA4wDDAKBgNVHRQEAwIBAjANBgkqhkiG9w0BAQsF\n"
337     "AAOCAQEAlBmjOA3Fs5UCq3GbyPEzHkfAabL0HqOQaCP12btmvIf/z8kcjMGHmjjP\n"
338     "t85dHbI4Ak/G9wtRT4E/j9i5KML+6yfhRyUTUJKIK/kbqgkj06uuYWuFipURlpDB\n"
339     "cm81RzZaMQvmlN5YKfzZV/clLX6mJiXpNQg6zjhj6wBAMI9ZfwVHmCjRqnwVmCUL\n"
340     "TybvuTmkryGBqREwmSbHFFjg5ixG/ztwzON/Ly78aJ8Bql6ktCl9+/gh6VJcoZ0q\n"
341     "L8V8aT8+Ghfi+zrXM8S9BmLQ9n0fQe0wzKrDZh14EK4sb7zmOzFHSxm3eEXyS98g\n"
342     "Od4cjsc3ymNk88S4jpnLRtIVxZB+SQ==\n"
343     "-----END X509 CRL-----\n";
344 
345 // kKnownCriticalCRL is kBasicCRL but with a critical issuing distribution point
346 // extension.
347 static const char kKnownCriticalCRL[] =
348     "-----BEGIN X509 CRL-----\n"
349     "MIIBujCBowIBATANBgkqhkiG9w0BAQsFADBOMQswCQYDVQQGEwJVUzETMBEGA1UE\n"
350     "CAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzESMBAGA1UECgwJ\n"
351     "Qm9yaW5nU1NMFw0xNjA5MjYxNTEwNTVaFw0xNjEwMjYxNTEwNTVaoCEwHzAKBgNV\n"
352     "HRQEAwIBATARBgNVHRwBAf8EBzAFoQMBAf8wDQYJKoZIhvcNAQELBQADggEBAA+3\n"
353     "i+5e5Ub8sccfgOBs6WVJFI9c8gvJjrJ8/dYfFIAuCyeocs7DFXn1n13CRZ+URR/Q\n"
354     "mVWgU28+xeusuSPYFpd9cyYTcVyNUGNTI3lwgcE/yVjPaOmzSZKdPakApRxtpKKQ\n"
355     "NN/56aQz3bnT/ZSHQNciRB8U6jiD9V30t0w+FDTpGaG+7bzzUH3UVF9xf9Ctp60A\n"
356     "3mfLe0scas7owSt4AEFuj2SPvcE7yvdOXbu+IEv21cEJUVExJAbhvIweHXh6yRW+\n"
357     "7VVeiNzdIjkZjyTmAzoXGha4+wbxXyBRbfH+XWcO/H+8nwyG8Gktdu2QB9S9nnIp\n"
358     "o/1TpfOMSGhMyMoyPrk=\n"
359     "-----END X509 CRL-----\n";
360 
361 // kUnknownCriticalCRL is kBasicCRL but with an unknown critical extension.
362 static const char kUnknownCriticalCRL[] =
363     "-----BEGIN X509 CRL-----\n"
364     "MIIBvDCBpQIBATANBgkqhkiG9w0BAQsFADBOMQswCQYDVQQGEwJVUzETMBEGA1UE\n"
365     "CAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzESMBAGA1UECgwJ\n"
366     "Qm9yaW5nU1NMFw0xNjA5MjYxNTEwNTVaFw0xNjEwMjYxNTEwNTVaoCMwITAKBgNV\n"
367     "HRQEAwIBATATBgwqhkiG9xIEAYS3CQABAf8EADANBgkqhkiG9w0BAQsFAAOCAQEA\n"
368     "GvBP0xqL509InMj/3493YVRV+ldTpBv5uTD6jewzf5XdaxEQ/VjTNe5zKnxbpAib\n"
369     "Kf7cwX0PMSkZjx7k7kKdDlEucwVvDoqC+O9aJcqVmM6GDyNb9xENxd0XCXja6MZC\n"
370     "yVgP4AwLauB2vSiEprYJyI1APph3iAEeDm60lTXX/wBM/tupQDDujKh2GPyvBRfJ\n"
371     "+wEDwGg3ICwvu4gO4zeC5qnFR+bpL9t5tOMAQnVZ0NWv+k7mkd2LbHdD44dxrfXC\n"
372     "nhtfERx99SDmC/jtUAJrGhtCO8acr7exCeYcduN7KKCm91OeCJKK6OzWst0Og1DB\n"
373     "kwzzU2rL3G65CrZ7H0SZsQ==\n"
374     "-----END X509 CRL-----\n";
375 
376 // kUnknownCriticalCRL2 is kBasicCRL but with a critical issuing distribution
377 // point extension followed by an unknown critical extension
378 static const char kUnknownCriticalCRL2[] =
379     "-----BEGIN X509 CRL-----\n"
380     "MIIBzzCBuAIBATANBgkqhkiG9w0BAQsFADBOMQswCQYDVQQGEwJVUzETMBEGA1UE\n"
381     "CAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzESMBAGA1UECgwJ\n"
382     "Qm9yaW5nU1NMFw0xNjA5MjYxNTEwNTVaFw0xNjEwMjYxNTEwNTVaoDYwNDAKBgNV\n"
383     "HRQEAwIBATARBgNVHRwBAf8EBzAFoQMBAf8wEwYMKoZIhvcSBAGEtwkAAQH/BAAw\n"
384     "DQYJKoZIhvcNAQELBQADggEBACTcpQC8jXL12JN5YzOcQ64ubQIe0XxRAd30p7qB\n"
385     "BTXGpgqBjrjxRfLms7EBYodEXB2oXMsDq3km0vT1MfYdsDD05S+SQ9CDsq/pUfaC\n"
386     "E2WNI5p8WircRnroYvbN2vkjlRbMd1+yNITohXYXCJwjEOAWOx3XIM10bwPYBv4R\n"
387     "rDobuLHoMgL3yHgMHmAkP7YpkBucNqeBV8cCdeAZLuhXFWi6yfr3r/X18yWbC/r2\n"
388     "2xXdkrSqXLFo7ToyP8YKTgiXpya4x6m53biEYwa2ULlas0igL6DK7wjYZX95Uy7H\n"
389     "GKljn9weIYiMPV/BzGymwfv2EW0preLwtyJNJPaxbdin6Jc=\n"
390     "-----END X509 CRL-----\n";
391 
392 // CertFromPEM parses the given, NUL-terminated pem block and returns an
393 // |X509*|.
CertFromPEM(const char * pem)394 static bssl::UniquePtr<X509> CertFromPEM(const char *pem) {
395   bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(pem, strlen(pem)));
396   return bssl::UniquePtr<X509>(
397       PEM_read_bio_X509(bio.get(), nullptr, nullptr, nullptr));
398 }
399 
400 // CRLFromPEM parses the given, NUL-terminated pem block and returns an
401 // |X509_CRL*|.
CRLFromPEM(const char * pem)402 static bssl::UniquePtr<X509_CRL> CRLFromPEM(const char *pem) {
403   bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(pem, strlen(pem)));
404   return bssl::UniquePtr<X509_CRL>(
405       PEM_read_bio_X509_CRL(bio.get(), nullptr, nullptr, nullptr));
406 }
407 
408 // PrivateKeyFromPEM parses the given, NUL-terminated pem block and returns an
409 // |EVP_PKEY*|.
PrivateKeyFromPEM(const char * pem)410 static bssl::UniquePtr<EVP_PKEY> PrivateKeyFromPEM(const char *pem) {
411   bssl::UniquePtr<BIO> bio(
412       BIO_new_mem_buf(const_cast<char *>(pem), strlen(pem)));
413   return bssl::UniquePtr<EVP_PKEY>(
414       PEM_read_bio_PrivateKey(bio.get(), nullptr, nullptr, nullptr));
415 }
416 
417 // CertsToStack converts a vector of |X509*| to an OpenSSL STACK_OF(X509),
418 // bumping the reference counts for each certificate in question.
CertsToStack(const std::vector<X509 * > & certs)419 static bssl::UniquePtr<STACK_OF(X509)> CertsToStack(
420     const std::vector<X509 *> &certs) {
421   bssl::UniquePtr<STACK_OF(X509)> stack(sk_X509_new_null());
422   if (!stack) {
423     return nullptr;
424   }
425   for (auto cert : certs) {
426     if (!sk_X509_push(stack.get(), cert)) {
427       return nullptr;
428     }
429     X509_up_ref(cert);
430   }
431 
432   return stack;
433 }
434 
435 // CRLsToStack converts a vector of |X509_CRL*| to an OpenSSL
436 // STACK_OF(X509_CRL), bumping the reference counts for each CRL in question.
CRLsToStack(const std::vector<X509_CRL * > & crls)437 static bssl::UniquePtr<STACK_OF(X509_CRL)> CRLsToStack(
438     const std::vector<X509_CRL *> &crls) {
439   bssl::UniquePtr<STACK_OF(X509_CRL)> stack(sk_X509_CRL_new_null());
440   if (!stack) {
441     return nullptr;
442   }
443   for (auto crl : crls) {
444     if (!sk_X509_CRL_push(stack.get(), crl)) {
445       return nullptr;
446     }
447     X509_CRL_up_ref(crl);
448   }
449 
450   return stack;
451 }
452 
Verify(X509 * leaf,const std::vector<X509 * > & roots,const std::vector<X509 * > & intermediates,const std::vector<X509_CRL * > & crls,unsigned long flags,bool use_additional_untrusted)453 static int Verify(X509 *leaf, const std::vector<X509 *> &roots,
454                    const std::vector<X509 *> &intermediates,
455                    const std::vector<X509_CRL *> &crls,
456                    unsigned long flags,
457                    bool use_additional_untrusted) {
458   bssl::UniquePtr<STACK_OF(X509)> roots_stack(CertsToStack(roots));
459   bssl::UniquePtr<STACK_OF(X509)> intermediates_stack(
460       CertsToStack(intermediates));
461   bssl::UniquePtr<STACK_OF(X509_CRL)> crls_stack(CRLsToStack(crls));
462 
463   if (!roots_stack ||
464       !intermediates_stack ||
465       !crls_stack) {
466     return X509_V_ERR_UNSPECIFIED;
467   }
468 
469   bssl::UniquePtr<X509_STORE_CTX> ctx(X509_STORE_CTX_new());
470   bssl::UniquePtr<X509_STORE> store(X509_STORE_new());
471   if (!ctx ||
472       !store) {
473     return X509_V_ERR_UNSPECIFIED;
474   }
475 
476   if (use_additional_untrusted) {
477     X509_STORE_set0_additional_untrusted(store.get(),
478                                          intermediates_stack.get());
479   }
480 
481   if (!X509_STORE_CTX_init(
482           ctx.get(), store.get(), leaf,
483           use_additional_untrusted ? nullptr : intermediates_stack.get())) {
484     return X509_V_ERR_UNSPECIFIED;
485   }
486 
487   X509_STORE_CTX_trusted_stack(ctx.get(), roots_stack.get());
488   X509_STORE_CTX_set0_crls(ctx.get(), crls_stack.get());
489 
490   X509_VERIFY_PARAM *param = X509_VERIFY_PARAM_new();
491   if (param == nullptr) {
492     return X509_V_ERR_UNSPECIFIED;
493   }
494   X509_VERIFY_PARAM_set_time(param, 1474934400 /* Sep 27th, 2016 */);
495   X509_VERIFY_PARAM_set_depth(param, 16);
496   if (flags) {
497     X509_VERIFY_PARAM_set_flags(param, flags);
498   }
499   X509_STORE_CTX_set0_param(ctx.get(), param);
500 
501   ERR_clear_error();
502   if (X509_verify_cert(ctx.get()) != 1) {
503     return X509_STORE_CTX_get_error(ctx.get());
504   }
505 
506   return X509_V_OK;
507 }
508 
Verify(X509 * leaf,const std::vector<X509 * > & roots,const std::vector<X509 * > & intermediates,const std::vector<X509_CRL * > & crls,unsigned long flags=0)509 static int Verify(X509 *leaf, const std::vector<X509 *> &roots,
510                    const std::vector<X509 *> &intermediates,
511                    const std::vector<X509_CRL *> &crls,
512                    unsigned long flags = 0) {
513   const int r1 = Verify(leaf, roots, intermediates, crls, flags, false);
514   const int r2 = Verify(leaf, roots, intermediates, crls, flags, true);
515 
516   if (r1 != r2) {
517     fprintf(stderr,
518             "Verify with, and without, use_additional_untrusted gave different "
519             "results: %d vs %d.\n",
520             r1, r2);
521     return false;
522   }
523 
524   return r1;
525 }
526 
TestVerify()527 static bool TestVerify() {
528   bssl::UniquePtr<X509> cross_signing_root(CertFromPEM(kCrossSigningRootPEM));
529   bssl::UniquePtr<X509> root(CertFromPEM(kRootCAPEM));
530   bssl::UniquePtr<X509> root_cross_signed(CertFromPEM(kRootCrossSignedPEM));
531   bssl::UniquePtr<X509> intermediate(CertFromPEM(kIntermediatePEM));
532   bssl::UniquePtr<X509> intermediate_self_signed(
533       CertFromPEM(kIntermediateSelfSignedPEM));
534   bssl::UniquePtr<X509> leaf(CertFromPEM(kLeafPEM));
535   bssl::UniquePtr<X509> leaf_no_key_usage(CertFromPEM(kLeafNoKeyUsagePEM));
536   bssl::UniquePtr<X509> forgery(CertFromPEM(kForgeryPEM));
537 
538   if (!cross_signing_root ||
539       !root ||
540       !root_cross_signed ||
541       !intermediate ||
542       !intermediate_self_signed ||
543       !leaf ||
544       !leaf_no_key_usage ||
545       !forgery) {
546     fprintf(stderr, "Failed to parse certificates\n");
547     return false;
548   }
549 
550   std::vector<X509*> empty;
551   std::vector<X509_CRL*> empty_crls;
552   if (Verify(leaf.get(), empty, empty, empty_crls) !=
553       X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) {
554     fprintf(stderr, "Leaf verified with no roots!\n");
555     return false;
556   }
557 
558   if (Verify(leaf.get(), empty, {intermediate.get()}, empty_crls) !=
559       X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) {
560     fprintf(stderr, "Leaf verified with no roots!\n");
561     return false;
562   }
563 
564   if (Verify(leaf.get(), {root.get()}, {intermediate.get()}, empty_crls) !=
565       X509_V_OK) {
566     ERR_print_errors_fp(stderr);
567     fprintf(stderr, "Basic chain didn't verify.\n");
568     return false;
569   }
570 
571   if (Verify(leaf.get(), {cross_signing_root.get()},
572              {intermediate.get(), root_cross_signed.get()},
573              empty_crls) != X509_V_OK) {
574     ERR_print_errors_fp(stderr);
575     fprintf(stderr, "Cross-signed chain didn't verify.\n");
576     return false;
577   }
578 
579   if (Verify(leaf.get(), {cross_signing_root.get(), root.get()},
580              {intermediate.get(), root_cross_signed.get()},
581              empty_crls) != X509_V_OK) {
582     ERR_print_errors_fp(stderr);
583     fprintf(stderr, "Cross-signed chain with root didn't verify.\n");
584     return false;
585   }
586 
587   /* This is the “altchains” test – we remove the cross-signing CA but include
588    * the cross-sign in the intermediates. */
589   if (Verify(leaf.get(), {root.get()},
590              {intermediate.get(), root_cross_signed.get()},
591              empty_crls) != X509_V_OK) {
592     ERR_print_errors_fp(stderr);
593     fprintf(stderr, "Chain with cross-sign didn't backtrack to find root.\n");
594     return false;
595   }
596 
597   if (Verify(leaf.get(), {root.get()},
598              {intermediate.get(), root_cross_signed.get()}, empty_crls,
599              X509_V_FLAG_NO_ALT_CHAINS) !=
600       X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) {
601     fprintf(stderr, "Altchains test still passed when disabled.\n");
602     return false;
603   }
604 
605   if (Verify(forgery.get(), {intermediate_self_signed.get()},
606              {leaf_no_key_usage.get()},
607              empty_crls) != X509_V_ERR_INVALID_CA) {
608     fprintf(stderr, "Basic constraints weren't checked.\n");
609     return false;
610   }
611 
612   /* Test that one cannot skip Basic Constraints checking with a contorted set
613    * of roots and intermediates. This is a regression test for CVE-2015-1793. */
614   if (Verify(forgery.get(),
615              {intermediate_self_signed.get(), root_cross_signed.get()},
616              {leaf_no_key_usage.get(), intermediate.get()},
617              empty_crls) != X509_V_ERR_INVALID_CA) {
618     fprintf(stderr, "Basic constraints weren't checked.\n");
619     return false;
620   }
621 
622   return true;
623 }
624 
TestCRL()625 static bool TestCRL() {
626   bssl::UniquePtr<X509> root(CertFromPEM(kCRLTestRoot));
627   bssl::UniquePtr<X509> leaf(CertFromPEM(kCRLTestLeaf));
628   bssl::UniquePtr<X509_CRL> basic_crl(CRLFromPEM(kBasicCRL));
629   bssl::UniquePtr<X509_CRL> revoked_crl(CRLFromPEM(kRevokedCRL));
630   bssl::UniquePtr<X509_CRL> bad_issuer_crl(CRLFromPEM(kBadIssuerCRL));
631   bssl::UniquePtr<X509_CRL> known_critical_crl(CRLFromPEM(kKnownCriticalCRL));
632   bssl::UniquePtr<X509_CRL> unknown_critical_crl(
633       CRLFromPEM(kUnknownCriticalCRL));
634   bssl::UniquePtr<X509_CRL> unknown_critical_crl2(
635       CRLFromPEM(kUnknownCriticalCRL2));
636 
637   if (!root ||
638       !leaf ||
639       !basic_crl ||
640       !revoked_crl ||
641       !bad_issuer_crl ||
642       !known_critical_crl ||
643       !unknown_critical_crl ||
644       !unknown_critical_crl2) {
645     fprintf(stderr, "Failed to parse certificates and CRLs.\n");
646     return false;
647   }
648 
649   if (Verify(leaf.get(), {root.get()}, {root.get()}, {basic_crl.get()},
650              X509_V_FLAG_CRL_CHECK) != X509_V_OK) {
651     fprintf(stderr, "Cert with CRL didn't verify.\n");
652     return false;
653   }
654 
655   if (Verify(leaf.get(), {root.get()}, {root.get()},
656              {basic_crl.get(), revoked_crl.get()},
657              X509_V_FLAG_CRL_CHECK) != X509_V_ERR_CERT_REVOKED) {
658     fprintf(stderr, "Revoked CRL wasn't checked.\n");
659     return false;
660   }
661 
662   std::vector<X509_CRL *> empty_crls;
663   if (Verify(leaf.get(), {root.get()}, {root.get()}, empty_crls,
664              X509_V_FLAG_CRL_CHECK) != X509_V_ERR_UNABLE_TO_GET_CRL) {
665     fprintf(stderr, "CRLs were not required.\n");
666     return false;
667   }
668 
669   if (Verify(leaf.get(), {root.get()}, {root.get()}, {bad_issuer_crl.get()},
670              X509_V_FLAG_CRL_CHECK) != X509_V_ERR_UNABLE_TO_GET_CRL) {
671     fprintf(stderr, "Bad CRL issuer was unnoticed.\n");
672     return false;
673   }
674 
675   if (Verify(leaf.get(), {root.get()}, {root.get()}, {known_critical_crl.get()},
676              X509_V_FLAG_CRL_CHECK) != X509_V_OK) {
677     fprintf(stderr, "CRL with known critical extension was rejected.\n");
678     return false;
679   }
680 
681   if (Verify(leaf.get(), {root.get()}, {root.get()},
682              {unknown_critical_crl.get()}, X509_V_FLAG_CRL_CHECK) !=
683       X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION) {
684     fprintf(stderr, "CRL with unknown critical extension was accepted.\n");
685     return false;
686   }
687 
688   if (Verify(leaf.get(), {root.get()}, {root.get()},
689              {unknown_critical_crl2.get()}, X509_V_FLAG_CRL_CHECK) !=
690       X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION) {
691     fprintf(stderr, "CRL with unknown critical extension (2) was accepted.\n");
692     return false;
693   }
694 
695   return true;
696 }
697 
TestPSS()698 static bool TestPSS() {
699   bssl::UniquePtr<X509> cert(CertFromPEM(kExamplePSSCert));
700   if (!cert) {
701     return false;
702   }
703 
704   bssl::UniquePtr<EVP_PKEY> pkey(X509_get_pubkey(cert.get()));
705   if (!pkey) {
706     return false;
707   }
708 
709   if (!X509_verify(cert.get(), pkey.get())) {
710     fprintf(stderr, "Could not verify certificate.\n");
711     return false;
712   }
713   return true;
714 }
715 
TestBadPSSParameters()716 static bool TestBadPSSParameters() {
717   bssl::UniquePtr<X509> cert(CertFromPEM(kBadPSSCertPEM));
718   if (!cert) {
719     return false;
720   }
721 
722   bssl::UniquePtr<EVP_PKEY> pkey(X509_get_pubkey(cert.get()));
723   if (!pkey) {
724     return false;
725   }
726 
727   if (X509_verify(cert.get(), pkey.get())) {
728     fprintf(stderr, "Unexpectedly verified bad certificate.\n");
729     return false;
730   }
731   ERR_clear_error();
732   return true;
733 }
734 
SignatureRoundTrips(EVP_MD_CTX * md_ctx,EVP_PKEY * pkey)735 static bool SignatureRoundTrips(EVP_MD_CTX *md_ctx, EVP_PKEY *pkey) {
736   // Make a certificate like signed with |md_ctx|'s settings.'
737   bssl::UniquePtr<X509> cert(CertFromPEM(kLeafPEM));
738   if (!cert || !X509_sign_ctx(cert.get(), md_ctx)) {
739     return false;
740   }
741 
742   // Ensure that |pkey| may still be used to verify the resulting signature. All
743   // settings in |md_ctx| must have been serialized appropriately.
744   return !!X509_verify(cert.get(), pkey);
745 }
746 
TestSignCtx()747 static bool TestSignCtx() {
748   bssl::UniquePtr<EVP_PKEY> pkey(PrivateKeyFromPEM(kRSAKey));
749   if (!pkey) {
750     return false;
751   }
752 
753   // Test PKCS#1 v1.5.
754   bssl::ScopedEVP_MD_CTX md_ctx;
755   if (!EVP_DigestSignInit(md_ctx.get(), NULL, EVP_sha256(), NULL, pkey.get()) ||
756       !SignatureRoundTrips(md_ctx.get(), pkey.get())) {
757     fprintf(stderr, "RSA PKCS#1 with SHA-256 failed\n");
758     return false;
759   }
760 
761   // Test RSA-PSS with custom parameters.
762   md_ctx.Reset();
763   EVP_PKEY_CTX *pkey_ctx;
764   if (!EVP_DigestSignInit(md_ctx.get(), &pkey_ctx, EVP_sha256(), NULL,
765                           pkey.get()) ||
766       !EVP_PKEY_CTX_set_rsa_padding(pkey_ctx, RSA_PKCS1_PSS_PADDING) ||
767       !EVP_PKEY_CTX_set_rsa_mgf1_md(pkey_ctx, EVP_sha512()) ||
768       !SignatureRoundTrips(md_ctx.get(), pkey.get())) {
769     fprintf(stderr, "RSA-PSS failed\n");
770     return false;
771   }
772 
773   return true;
774 }
775 
PEMToDER(bssl::UniquePtr<uint8_t> * out,size_t * out_len,const char * pem)776 static bool PEMToDER(bssl::UniquePtr<uint8_t> *out, size_t *out_len,
777                      const char *pem) {
778   bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(pem, strlen(pem)));
779   if (!bio) {
780     return false;
781   }
782 
783   char *name, *header;
784   uint8_t *data;
785   long data_len;
786   if (!PEM_read_bio(bio.get(), &name, &header, &data, &data_len)) {
787     fprintf(stderr, "failed to read PEM data.\n");
788     return false;
789   }
790   OPENSSL_free(name);
791   OPENSSL_free(header);
792 
793   out->reset(data);
794   *out_len = data_len;
795 
796   return true;
797 }
798 
TestFromBuffer()799 static bool TestFromBuffer() {
800   size_t data_len;
801   bssl::UniquePtr<uint8_t> data;
802   if (!PEMToDER(&data, &data_len, kRootCAPEM)) {
803     return false;
804   }
805 
806   bssl::UniquePtr<CRYPTO_BUFFER> buf(
807       CRYPTO_BUFFER_new(data.get(), data_len, nullptr));
808   if (!buf) {
809     return false;
810   }
811 
812   bssl::UniquePtr<X509> root(X509_parse_from_buffer(buf.get()));
813   if (!root) {
814     return false;
815   }
816 
817   const uint8_t *enc_pointer = root->cert_info->enc.enc;
818   const uint8_t *buf_pointer = CRYPTO_BUFFER_data(buf.get());
819   if (enc_pointer < buf_pointer ||
820       enc_pointer >= buf_pointer + CRYPTO_BUFFER_len(buf.get())) {
821     fprintf(stderr, "TestFromBuffer: enc does not alias the buffer.\n");
822     return false;
823   }
824 
825   buf.reset();
826 
827   /* This ensures the X509 took a reference to |buf|, otherwise this will be a
828    * reference to free memory and ASAN should notice. */
829   if (enc_pointer[0] != CBS_ASN1_SEQUENCE) {
830     fprintf(stderr, "TestFromBuffer: enc data is not a SEQUENCE.\n");
831     return false;
832   }
833 
834   return true;
835 }
836 
TestFromBufferTrailingData()837 static bool TestFromBufferTrailingData() {
838   size_t data_len;
839   bssl::UniquePtr<uint8_t> data;
840   if (!PEMToDER(&data, &data_len, kRootCAPEM)) {
841     return false;
842   }
843 
844   std::unique_ptr<uint8_t[]> trailing_data(new uint8_t[data_len + 1]);
845   OPENSSL_memcpy(trailing_data.get(), data.get(), data_len);
846 
847   bssl::UniquePtr<CRYPTO_BUFFER> buf_trailing_data(
848       CRYPTO_BUFFER_new(trailing_data.get(), data_len + 1, nullptr));
849   if (!buf_trailing_data) {
850     return false;
851   }
852 
853   bssl::UniquePtr<X509> root_trailing_data(
854       X509_parse_from_buffer(buf_trailing_data.get()));
855   if (root_trailing_data) {
856     fprintf(stderr, "TestFromBuffer: trailing data was not rejected.\n");
857     return false;
858   }
859 
860   return true;
861 }
862 
TestFromBufferModified()863 static bool TestFromBufferModified() {
864   size_t data_len;
865   bssl::UniquePtr<uint8_t> data;
866   if (!PEMToDER(&data, &data_len, kRootCAPEM)) {
867     return false;
868   }
869 
870   bssl::UniquePtr<CRYPTO_BUFFER> buf(
871       CRYPTO_BUFFER_new(data.get(), data_len, nullptr));
872   if (!buf) {
873     return false;
874   }
875 
876   bssl::UniquePtr<X509> root(X509_parse_from_buffer(buf.get()));
877   if (!root) {
878     return false;
879   }
880 
881   bssl::UniquePtr<ASN1_INTEGER> fourty_two(ASN1_INTEGER_new());
882   ASN1_INTEGER_set(fourty_two.get(), 42);
883   X509_set_serialNumber(root.get(), fourty_two.get());
884 
885   if (i2d_X509(root.get(), nullptr) != static_cast<long>(data_len)) {
886     fprintf(stderr,
887             "TestFromBufferModified: i2d_X509 gives different answer before "
888             "marking as modified.\n");
889     return false;
890   }
891 
892   X509_CINF_set_modified(root->cert_info);
893 
894   if (i2d_X509(root.get(), nullptr) == static_cast<long>(data_len)) {
895     fprintf(stderr,
896             "TestFromBufferModified: i2d_X509 gives same answer after marking "
897             "as modified.\n");
898     return false;
899   }
900 
901   return true;
902 }
903 
TestFromBufferReused()904 static bool TestFromBufferReused() {
905   size_t data_len;
906   bssl::UniquePtr<uint8_t> data;
907   if (!PEMToDER(&data, &data_len, kRootCAPEM)) {
908     return false;
909   }
910 
911   bssl::UniquePtr<CRYPTO_BUFFER> buf(
912       CRYPTO_BUFFER_new(data.get(), data_len, nullptr));
913   if (!buf) {
914     return false;
915   }
916 
917   bssl::UniquePtr<X509> root(X509_parse_from_buffer(buf.get()));
918   if (!root) {
919     return false;
920   }
921 
922   size_t data2_len;
923   bssl::UniquePtr<uint8_t> data2;
924   if (!PEMToDER(&data2, &data2_len, kLeafPEM)) {
925     return false;
926   }
927 
928   X509 *x509p = root.get();
929   const uint8_t *inp = data2.get();
930   X509 *ret = d2i_X509(&x509p, &inp, data2_len);
931   if (ret != root.get()) {
932     fprintf(stderr,
933             "TestFromBufferReused: d2i_X509 parsed into a different object.\n");
934     return false;
935   }
936 
937   if (root->buf != nullptr) {
938     fprintf(stderr,
939             "TestFromBufferReused: d2i_X509 didn't clear |buf| pointer.\n");
940     return false;
941   }
942 
943   // Free |data2| and ensure that |root| took its own copy. Otherwise the
944   // following will trigger a use-after-free.
945   data2.reset();
946 
947   uint8_t *i2d = nullptr;
948   int i2d_len = i2d_X509(root.get(), &i2d);
949   if (i2d_len < 0) {
950     return false;
951   }
952   bssl::UniquePtr<uint8_t> i2d_storage(i2d);
953 
954   if (!PEMToDER(&data2, &data2_len, kLeafPEM)) {
955     return false;
956   }
957   if (i2d_len != static_cast<long>(data2_len) ||
958       OPENSSL_memcmp(data2.get(), i2d, i2d_len) != 0) {
959     fprintf(stderr, "TestFromBufferReused: i2d gave wrong result.\n");
960     return false;
961   }
962 
963   if (root->buf != NULL) {
964     fprintf(stderr, "TestFromBufferReused: X509.buf was not cleared.\n");
965     return false;
966   }
967 
968   return true;
969 }
970 
TestFailedParseFromBuffer()971 static bool TestFailedParseFromBuffer() {
972   static const uint8_t kNonsense[] = {1, 2, 3, 4, 5};
973 
974   bssl::UniquePtr<CRYPTO_BUFFER> buf(
975       CRYPTO_BUFFER_new(kNonsense, sizeof(kNonsense), nullptr));
976   if (!buf) {
977     return false;
978   }
979 
980   bssl::UniquePtr<X509> cert(X509_parse_from_buffer(buf.get()));
981   if (cert) {
982     fprintf(stderr, "Nonsense somehow parsed.\n");
983     return false;
984   }
985   ERR_clear_error();
986 
987   // Test a buffer with trailing data.
988   size_t data_len;
989   bssl::UniquePtr<uint8_t> data;
990   if (!PEMToDER(&data, &data_len, kRootCAPEM)) {
991     return false;
992   }
993 
994   std::unique_ptr<uint8_t[]> data_with_trailing_byte(new uint8_t[data_len + 1]);
995   OPENSSL_memcpy(data_with_trailing_byte.get(), data.get(), data_len);
996   data_with_trailing_byte[data_len] = 0;
997 
998   bssl::UniquePtr<CRYPTO_BUFFER> buf_with_trailing_byte(
999       CRYPTO_BUFFER_new(data_with_trailing_byte.get(), data_len + 1, nullptr));
1000   if (!buf_with_trailing_byte) {
1001     return false;
1002   }
1003 
1004   bssl::UniquePtr<X509> root(
1005       X509_parse_from_buffer(buf_with_trailing_byte.get()));
1006   if (root) {
1007     fprintf(stderr, "Parsed buffer with trailing byte.\n");
1008     return false;
1009   }
1010   ERR_clear_error();
1011 
1012   return true;
1013 }
1014 
TestPrintUTCTIME()1015 static bool TestPrintUTCTIME() {
1016   static const struct {
1017     const char *val, *want;
1018   } asn1_utctime_tests[] = {
1019     {"", "Bad time value"},
1020 
1021     // Correct RFC 5280 form. Test years < 2000 and > 2000.
1022     {"090303125425Z", "Mar  3 12:54:25 2009 GMT"},
1023     {"900303125425Z", "Mar  3 12:54:25 1990 GMT"},
1024     {"000303125425Z", "Mar  3 12:54:25 2000 GMT"},
1025 
1026     // Correct form, bad values.
1027     {"000000000000Z", "Bad time value"},
1028     {"999999999999Z", "Bad time value"},
1029 
1030     // Missing components. Not legal RFC 5280, but permitted.
1031     {"090303125425", "Mar  3 12:54:25 2009"},
1032     {"9003031254", "Mar  3 12:54:00 1990"},
1033     {"9003031254Z", "Mar  3 12:54:00 1990 GMT"},
1034 
1035     // GENERALIZEDTIME confused for UTCTIME.
1036     {"20090303125425Z", "Bad time value"},
1037 
1038     // Legal ASN.1, but not legal RFC 5280.
1039     {"9003031254+0800", "Bad time value"},
1040     {"9003031254-0800", "Bad time value"},
1041 
1042     // Trailing garbage.
1043     {"9003031254Z ", "Bad time value"},
1044   };
1045 
1046   for (auto t : asn1_utctime_tests) {
1047     bssl::UniquePtr<ASN1_UTCTIME> tm(ASN1_UTCTIME_new());
1048     bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));
1049 
1050     // Use this instead of ASN1_UTCTIME_set() because some callers get
1051     // type-confused and pass ASN1_GENERALIZEDTIME to ASN1_UTCTIME_print().
1052     // ASN1_UTCTIME_set_string() is stricter, and would reject the inputs in
1053     // question.
1054     if (!ASN1_STRING_set(tm.get(), t.val, strlen(t.val))) {
1055       fprintf(stderr, "ASN1_STRING_set\n");
1056       return false;
1057     }
1058     const int ok = ASN1_UTCTIME_print(bio.get(), tm.get());
1059 
1060     const uint8_t *contents;
1061     size_t len;
1062     if (!BIO_mem_contents(bio.get(), &contents, &len)) {
1063       fprintf(stderr, "BIO_mem_contents\n");
1064       return false;
1065     }
1066 
1067     if (ok != (strcmp(t.want, "Bad time value") != 0)) {
1068       fprintf(stderr, "ASN1_UTCTIME_print(%s): bad return value\n", t.val);
1069       return false;
1070     }
1071     if (len != strlen(t.want) || memcmp(contents, t.want, len)) {
1072       fprintf(stderr, "ASN1_UTCTIME_print(%s): got %.*s, want %s\n", t.val,
1073               static_cast<int>(len),
1074               reinterpret_cast<const char *>(contents), t.want);
1075       return false;
1076     }
1077   }
1078 
1079   return true;
1080 }
1081 
main()1082 int main() {
1083   CRYPTO_library_init();
1084 
1085   if (!TestVerify() ||
1086       !TestCRL() ||
1087       !TestPSS() ||
1088       !TestBadPSSParameters() ||
1089       !TestSignCtx() ||
1090       !TestFromBuffer() ||
1091       !TestFromBufferTrailingData() ||
1092       !TestFromBufferModified() ||
1093       !TestFromBufferReused() ||
1094       !TestFailedParseFromBuffer() ||
1095       !TestPrintUTCTIME()) {
1096     return 1;
1097   }
1098 
1099   printf("PASS\n");
1100   return 0;
1101 }
1102