+ switch ((int)n) {
+ case X509_V_OK:
+ return ("ok");
+ case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
+ return ("unable to get issuer certificate");
+ case X509_V_ERR_UNABLE_TO_GET_CRL:
+ return ("unable to get certificate CRL");
+ case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
+ return ("unable to decrypt certificate's signature");
+ case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
+ return ("unable to decrypt CRL's signature");
+ case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
+ return ("unable to decode issuer public key");
+ case X509_V_ERR_CERT_SIGNATURE_FAILURE:
+ return ("certificate signature failure");
+ case X509_V_ERR_CRL_SIGNATURE_FAILURE:
+ return ("CRL signature failure");
+ case X509_V_ERR_CERT_NOT_YET_VALID:
+ return ("certificate is not yet valid");
+ case X509_V_ERR_CRL_NOT_YET_VALID:
+ return ("CRL is not yet valid");
+ case X509_V_ERR_CERT_HAS_EXPIRED:
+ return ("certificate has expired");
+ case X509_V_ERR_CRL_HAS_EXPIRED:
+ return ("CRL has expired");
+ case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
+ return ("format error in certificate's notBefore field");
+ case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
+ return ("format error in certificate's notAfter field");
+ case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
+ return ("format error in CRL's lastUpdate field");
+ case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
+ return ("format error in CRL's nextUpdate field");
+ case X509_V_ERR_OUT_OF_MEM:
+ return ("out of memory");
+ case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
+ return ("self signed certificate");
+ case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
+ return ("self signed certificate in certificate chain");
+ case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
+ return ("unable to get local issuer certificate");
+ case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
+ return ("unable to verify the first certificate");
+ case X509_V_ERR_CERT_CHAIN_TOO_LONG:
+ return ("certificate chain too long");
+ case X509_V_ERR_CERT_REVOKED:
+ return ("certificate revoked");
+ case X509_V_ERR_INVALID_CA:
+ return ("invalid CA certificate");
+ case X509_V_ERR_INVALID_NON_CA:
+ return ("invalid non-CA certificate (has CA markings)");
+ case X509_V_ERR_PATH_LENGTH_EXCEEDED:
+ return ("path length constraint exceeded");
+ case X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED:
+ return ("proxy path length constraint exceeded");
+ case X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED:
+ return
+ ("proxy certificates not allowed, please set the appropriate flag");
+ case X509_V_ERR_INVALID_PURPOSE:
+ return ("unsupported certificate purpose");
+ case X509_V_ERR_CERT_UNTRUSTED:
+ return ("certificate not trusted");
+ case X509_V_ERR_CERT_REJECTED:
+ return ("certificate rejected");
+ case X509_V_ERR_APPLICATION_VERIFICATION:
+ return ("application verification failure");
+ case X509_V_ERR_SUBJECT_ISSUER_MISMATCH:
+ return ("subject issuer mismatch");
+ case X509_V_ERR_AKID_SKID_MISMATCH:
+ return ("authority and subject key identifier mismatch");
+ case X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH:
+ return ("authority and issuer serial number mismatch");
+ case X509_V_ERR_KEYUSAGE_NO_CERTSIGN:
+ return ("key usage does not include certificate signing");
+ case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
+ return ("unable to get CRL issuer certificate");
+ case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
+ return ("unhandled critical extension");
+ case X509_V_ERR_KEYUSAGE_NO_CRL_SIGN:
+ return ("key usage does not include CRL signing");
+ case X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE:
+ return ("key usage does not include digital signature");
+ case X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION:
+ return ("unhandled critical CRL extension");
+ case X509_V_ERR_INVALID_EXTENSION:
+ return ("invalid or inconsistent certificate extension");
+ case X509_V_ERR_INVALID_POLICY_EXTENSION:
+ return ("invalid or inconsistent certificate policy extension");
+ case X509_V_ERR_NO_EXPLICIT_POLICY:
+ return ("no explicit policy");
+ case X509_V_ERR_DIFFERENT_CRL_SCOPE:
+ return ("Different CRL scope");
+ case X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE:
+ return ("Unsupported extension feature");
+ case X509_V_ERR_UNNESTED_RESOURCE:
+ return ("RFC 3779 resource not subset of parent's resources");