1/*
2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include <time.h>
12#include <errno.h>
13
14#include "internal/cryptlib.h"
15#include <openssl/buffer.h>
16#include <openssl/evp.h>
17#include <openssl/asn1.h>
18#include <openssl/x509.h>
19#include <openssl/objects.h>
20
21const char *X509_verify_cert_error_string(long n)
22{
23 switch ((int)n) {
24 case X509_V_OK:
25 return "ok";
26 case X509_V_ERR_UNSPECIFIED:
27 return "unspecified certificate verification error";
28 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
29 return "unable to get issuer certificate";
30 case X509_V_ERR_UNABLE_TO_GET_CRL:
31 return "unable to get certificate CRL";
32 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
33 return "unable to decrypt certificate's signature";
34 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
35 return "unable to decrypt CRL's signature";
36 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
37 return "unable to decode issuer public key";
38 case X509_V_ERR_CERT_SIGNATURE_FAILURE:
39 return "certificate signature failure";
40 case X509_V_ERR_CRL_SIGNATURE_FAILURE:
41 return "CRL signature failure";
42 case X509_V_ERR_CERT_NOT_YET_VALID:
43 return "certificate is not yet valid";
44 case X509_V_ERR_CERT_HAS_EXPIRED:
45 return "certificate has expired";
46 case X509_V_ERR_CRL_NOT_YET_VALID:
47 return "CRL is not yet valid";
48 case X509_V_ERR_CRL_HAS_EXPIRED:
49 return "CRL has expired";
50 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
51 return "format error in certificate's notBefore field";
52 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
53 return "format error in certificate's notAfter field";
54 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
55 return "format error in CRL's lastUpdate field";
56 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
57 return "format error in CRL's nextUpdate field";
58 case X509_V_ERR_OUT_OF_MEM:
59 return "out of memory";
60 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
61 return "self signed certificate";
62 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
63 return "self signed certificate in certificate chain";
64 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
65 return "unable to get local issuer certificate";
66 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
67 return "unable to verify the first certificate";
68 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
69 return "certificate chain too long";
70 case X509_V_ERR_CERT_REVOKED:
71 return "certificate revoked";
72 case X509_V_ERR_INVALID_CA:
73 return "invalid CA certificate";
74 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
75 return "path length constraint exceeded";
76 case X509_V_ERR_INVALID_PURPOSE:
77 return "unsupported certificate purpose";
78 case X509_V_ERR_CERT_UNTRUSTED:
79 return "certificate not trusted";
80 case X509_V_ERR_CERT_REJECTED:
81 return "certificate rejected";
82 case X509_V_ERR_SUBJECT_ISSUER_MISMATCH:
83 return "subject issuer mismatch";
84 case X509_V_ERR_AKID_SKID_MISMATCH:
85 return "authority and subject key identifier mismatch";
86 case X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH:
87 return "authority and issuer serial number mismatch";
88 case X509_V_ERR_KEYUSAGE_NO_CERTSIGN:
89 return "key usage does not include certificate signing";
90 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
91 return "unable to get CRL issuer certificate";
92 case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
93 return "unhandled critical extension";
94 case X509_V_ERR_KEYUSAGE_NO_CRL_SIGN:
95 return "key usage does not include CRL signing";
96 case X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION:
97 return "unhandled critical CRL extension";
98 case X509_V_ERR_INVALID_NON_CA:
99 return "invalid non-CA certificate (has CA markings)";
100 case X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED:
101 return "proxy path length constraint exceeded";
102 case X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE:
103 return "key usage does not include digital signature";
104 case X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED:
105 return
106 "proxy certificates not allowed, please set the appropriate flag";
107 case X509_V_ERR_INVALID_EXTENSION:
108 return "invalid or inconsistent certificate extension";
109 case X509_V_ERR_INVALID_POLICY_EXTENSION:
110 return "invalid or inconsistent certificate policy extension";
111 case X509_V_ERR_NO_EXPLICIT_POLICY:
112 return "no explicit policy";
113 case X509_V_ERR_DIFFERENT_CRL_SCOPE:
114 return "Different CRL scope";
115 case X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE:
116 return "Unsupported extension feature";
117 case X509_V_ERR_UNNESTED_RESOURCE:
118 return "RFC 3779 resource not subset of parent's resources";
119 case X509_V_ERR_PERMITTED_VIOLATION:
120 return "permitted subtree violation";
121 case X509_V_ERR_EXCLUDED_VIOLATION:
122 return "excluded subtree violation";
123 case X509_V_ERR_SUBTREE_MINMAX:
124 return "name constraints minimum and maximum not supported";
125 case X509_V_ERR_APPLICATION_VERIFICATION:
126 return "application verification failure";
127 case X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE:
128 return "unsupported name constraint type";
129 case X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX:
130 return "unsupported or invalid name constraint syntax";
131 case X509_V_ERR_UNSUPPORTED_NAME_SYNTAX:
132 return "unsupported or invalid name syntax";
133 case X509_V_ERR_CRL_PATH_VALIDATION_ERROR:
134 return "CRL path validation error";
135 case X509_V_ERR_PATH_LOOP:
136 return "Path Loop";
137 case X509_V_ERR_SUITE_B_INVALID_VERSION:
138 return "Suite B: certificate version invalid";
139 case X509_V_ERR_SUITE_B_INVALID_ALGORITHM:
140 return "Suite B: invalid public key algorithm";
141 case X509_V_ERR_SUITE_B_INVALID_CURVE:
142 return "Suite B: invalid ECC curve";
143 case X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM:
144 return "Suite B: invalid signature algorithm";
145 case X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED:
146 return "Suite B: curve not allowed for this LOS";
147 case X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256:
148 return "Suite B: cannot sign P-384 with P-256";
149 case X509_V_ERR_HOSTNAME_MISMATCH:
150 return "Hostname mismatch";
151 case X509_V_ERR_EMAIL_MISMATCH:
152 return "Email address mismatch";
153 case X509_V_ERR_IP_ADDRESS_MISMATCH:
154 return "IP address mismatch";
155 case X509_V_ERR_DANE_NO_MATCH:
156 return "No matching DANE TLSA records";
157 case X509_V_ERR_EE_KEY_TOO_SMALL:
158 return "EE certificate key too weak";
159 case X509_V_ERR_CA_KEY_TOO_SMALL:
160 return "CA certificate key too weak";
161 case X509_V_ERR_CA_MD_TOO_WEAK:
162 return "CA signature digest algorithm too weak";
163 case X509_V_ERR_INVALID_CALL:
164 return "Invalid certificate verification context";
165 case X509_V_ERR_STORE_LOOKUP:
166 return "Issuer certificate lookup error";
167 case X509_V_ERR_NO_VALID_SCTS:
168 return "Certificate Transparency required, but no valid SCTs found";
169 case X509_V_ERR_PROXY_SUBJECT_NAME_VIOLATION:
170 return "proxy subject name violation";
171 case X509_V_ERR_OCSP_VERIFY_NEEDED:
172 return "OCSP verification needed";
173 case X509_V_ERR_OCSP_VERIFY_FAILED:
174 return "OCSP verification failed";
175 case X509_V_ERR_OCSP_CERT_UNKNOWN:
176 return "OCSP unknown cert";
177 case X509_V_ERR_SIGNATURE_ALGORITHM_MISMATCH:
178 return "Subject signature algorithm and issuer public key algorithm mismatch";
179 case X509_V_ERR_NO_ISSUER_PUBLIC_KEY:
180 return "Issuer certificate doesn't have a public key";
181
182 default:
183 /* Printing an error number into a static buffer is not thread-safe */
184 return "unknown certificate verification error";
185 }
186}
187