xref: /openssl/crypto/x509/x509_txt.c (revision 3c95ef22)
1 /*
2  * Copyright 1995-2023 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 
X509_verify_cert_error_string(long n)21 const 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_NO_ISSUER_PUBLIC_KEY:
73         return "issuer certificate doesn't have a public key";
74     case X509_V_ERR_PATH_LENGTH_EXCEEDED:
75         return "path length constraint exceeded";
76     case X509_V_ERR_INVALID_PURPOSE:
77         return "unsuitable 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_UNSUPPORTED_SIGNATURE_ALGORITHM:
178         return "Cannot find certificate signature algorithm";
179     case X509_V_ERR_SIGNATURE_ALGORITHM_MISMATCH:
180         return "subject signature algorithm and issuer public key algorithm mismatch";
181     case X509_V_ERR_SIGNATURE_ALGORITHM_INCONSISTENCY:
182         return "cert info signature and signature algorithm mismatch";
183     case X509_V_ERR_INVALID_CA:
184         return "invalid CA certificate";
185     case X509_V_ERR_PATHLEN_INVALID_FOR_NON_CA:
186         return "Path length invalid for non-CA cert";
187     case X509_V_ERR_PATHLEN_WITHOUT_KU_KEY_CERT_SIGN:
188         return "Path length given without key usage keyCertSign";
189     case X509_V_ERR_KU_KEY_CERT_SIGN_INVALID_FOR_NON_CA:
190         return "Key usage keyCertSign invalid for non-CA cert";
191     case X509_V_ERR_ISSUER_NAME_EMPTY:
192         return "Issuer name empty";
193     case X509_V_ERR_SUBJECT_NAME_EMPTY:
194         return "Subject name empty";
195     case X509_V_ERR_MISSING_AUTHORITY_KEY_IDENTIFIER:
196         return "Missing Authority Key Identifier";
197     case X509_V_ERR_MISSING_SUBJECT_KEY_IDENTIFIER:
198         return "Missing Subject Key Identifier";
199     case X509_V_ERR_EMPTY_SUBJECT_ALT_NAME:
200         return "Empty Subject Alternative Name extension";
201     case X509_V_ERR_CA_BCONS_NOT_CRITICAL:
202         return "Basic Constraints of CA cert not marked critical";
203     case X509_V_ERR_EMPTY_SUBJECT_SAN_NOT_CRITICAL:
204         return "Subject empty and Subject Alt Name extension not critical";
205     case X509_V_ERR_AUTHORITY_KEY_IDENTIFIER_CRITICAL:
206         return "Authority Key Identifier marked critical";
207     case X509_V_ERR_SUBJECT_KEY_IDENTIFIER_CRITICAL:
208         return "Subject Key Identifier marked critical";
209     case X509_V_ERR_CA_CERT_MISSING_KEY_USAGE:
210         return "CA cert does not include key usage extension";
211     case X509_V_ERR_EXTENSIONS_REQUIRE_VERSION_3:
212         return "Using cert extension requires at least X509v3";
213     case X509_V_ERR_EC_KEY_EXPLICIT_PARAMS:
214         return "Certificate public key has explicit ECC parameters";
215     case X509_V_ERR_RPK_UNTRUSTED:
216         return "Raw public key untrusted, no trusted keys configured";
217 
218         /*
219          * Entries must be kept consistent with include/openssl/x509_vfy.h.in
220          * and with doc/man3/X509_STORE_CTX_get_error.pod
221          */
222 
223     default:
224         /* Printing an error number into a static buffer is not thread-safe */
225         return "unknown certificate verification error";
226     }
227 }
228