1 /* $OpenBSD: x509_txt.c,v 1.20 2022/07/05 20:31:46 tb Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 #include <errno.h> 60 #include <stdio.h> 61 #include <time.h> 62 63 #include <openssl/asn1.h> 64 #include <openssl/buffer.h> 65 #include <openssl/evp.h> 66 #include <openssl/lhash.h> 67 #include <openssl/objects.h> 68 #include <openssl/x509.h> 69 70 const char * 71 X509_verify_cert_error_string(long n) 72 { 73 static char buf[100]; 74 75 switch ((int)n) { 76 case X509_V_OK: 77 return("ok"); 78 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: 79 return("unable to get issuer certificate"); 80 case X509_V_ERR_UNABLE_TO_GET_CRL: 81 return("unable to get certificate CRL"); 82 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: 83 return("unable to decrypt certificate's signature"); 84 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: 85 return("unable to decrypt CRL's signature"); 86 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: 87 return("unable to decode issuer public key"); 88 case X509_V_ERR_CERT_SIGNATURE_FAILURE: 89 return("certificate signature failure"); 90 case X509_V_ERR_CRL_SIGNATURE_FAILURE: 91 return("CRL signature failure"); 92 case X509_V_ERR_CERT_NOT_YET_VALID: 93 return("certificate is not yet valid"); 94 case X509_V_ERR_CRL_NOT_YET_VALID: 95 return("CRL is not yet valid"); 96 case X509_V_ERR_CERT_HAS_EXPIRED: 97 return("certificate has expired"); 98 case X509_V_ERR_CRL_HAS_EXPIRED: 99 return("CRL has expired"); 100 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: 101 return("format error in certificate's notBefore field"); 102 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: 103 return("format error in certificate's notAfter field"); 104 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: 105 return("format error in CRL's lastUpdate field"); 106 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: 107 return("format error in CRL's nextUpdate field"); 108 case X509_V_ERR_OUT_OF_MEM: 109 return("out of memory"); 110 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: 111 return("self signed certificate"); 112 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: 113 return("self signed certificate in certificate chain"); 114 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: 115 return("unable to get local issuer certificate"); 116 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: 117 return("unable to verify the first certificate"); 118 case X509_V_ERR_CERT_CHAIN_TOO_LONG: 119 return("certificate chain too long"); 120 case X509_V_ERR_CERT_REVOKED: 121 return("certificate revoked"); 122 case X509_V_ERR_INVALID_CA: 123 return ("invalid CA certificate"); 124 case X509_V_ERR_INVALID_NON_CA: 125 return ("invalid non-CA certificate (has CA markings)"); 126 case X509_V_ERR_PATH_LENGTH_EXCEEDED: 127 return ("path length constraint exceeded"); 128 case X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED: 129 return("proxy path length constraint exceeded"); 130 case X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED: 131 return("proxy certificates not allowed, please set the appropriate flag"); 132 case X509_V_ERR_INVALID_PURPOSE: 133 return ("unsupported certificate purpose"); 134 case X509_V_ERR_CERT_UNTRUSTED: 135 return ("certificate not trusted"); 136 case X509_V_ERR_CERT_REJECTED: 137 return ("certificate rejected"); 138 case X509_V_ERR_APPLICATION_VERIFICATION: 139 return("application verification failure"); 140 case X509_V_ERR_SUBJECT_ISSUER_MISMATCH: 141 return("subject issuer mismatch"); 142 case X509_V_ERR_AKID_SKID_MISMATCH: 143 return("authority and subject key identifier mismatch"); 144 case X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH: 145 return("authority and issuer serial number mismatch"); 146 case X509_V_ERR_KEYUSAGE_NO_CERTSIGN: 147 return("key usage does not include certificate signing"); 148 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: 149 return("unable to get CRL issuer certificate"); 150 case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION: 151 return("unhandled critical extension"); 152 case X509_V_ERR_KEYUSAGE_NO_CRL_SIGN: 153 return("key usage does not include CRL signing"); 154 case X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE: 155 return("key usage does not include digital signature"); 156 case X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION: 157 return("unhandled critical CRL extension"); 158 case X509_V_ERR_INVALID_EXTENSION: 159 return("invalid or inconsistent certificate extension"); 160 case X509_V_ERR_INVALID_POLICY_EXTENSION: 161 return("invalid or inconsistent certificate policy extension"); 162 case X509_V_ERR_NO_EXPLICIT_POLICY: 163 return("no explicit policy"); 164 case X509_V_ERR_DIFFERENT_CRL_SCOPE: 165 return("Different CRL scope"); 166 case X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE: 167 return("Unsupported extension feature"); 168 case X509_V_ERR_UNNESTED_RESOURCE: 169 return("RFC 3779 resource not subset of parent's resources"); 170 case X509_V_ERR_PERMITTED_VIOLATION: 171 return("permitted subtree violation"); 172 case X509_V_ERR_EXCLUDED_VIOLATION: 173 return("excluded subtree violation"); 174 case X509_V_ERR_SUBTREE_MINMAX: 175 return("name constraints minimum and maximum not supported"); 176 case X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE: 177 return("unsupported name constraint type"); 178 case X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX: 179 return("unsupported or invalid name constraint syntax"); 180 case X509_V_ERR_UNSUPPORTED_NAME_SYNTAX: 181 return("unsupported or invalid name syntax"); 182 case X509_V_ERR_CRL_PATH_VALIDATION_ERROR: 183 return("CRL path validation error"); 184 case X509_V_ERR_HOSTNAME_MISMATCH: 185 return("Hostname mismatch"); 186 case X509_V_ERR_EMAIL_MISMATCH: 187 return("Email address mismatch"); 188 case X509_V_ERR_IP_ADDRESS_MISMATCH: 189 return("IP address mismatch"); 190 case X509_V_ERR_INVALID_CALL: 191 return("Invalid certificate verification context"); 192 case X509_V_ERR_STORE_LOOKUP: 193 return("Issuer certificate lookup error"); 194 case X509_V_ERR_EE_KEY_TOO_SMALL: 195 return("EE certificate key too weak"); 196 case X509_V_ERR_CA_KEY_TOO_SMALL: 197 return("CA certificate key too weak"); 198 case X509_V_ERR_CA_MD_TOO_WEAK: 199 return("CA signature digest algorithm too weak"); 200 201 default: 202 (void) snprintf(buf, sizeof buf, "error number %ld", n); 203 return(buf); 204 } 205 } 206