1 /** 2 * \file x509_crl.h 3 * 4 * \brief X.509 certificate revocation list parsing 5 */ 6 /* 7 * Copyright The Mbed TLS Contributors 8 * SPDX-License-Identifier: Apache-2.0 9 * 10 * Licensed under the Apache License, Version 2.0 (the "License"); you may 11 * not use this file except in compliance with the License. 12 * You may obtain a copy of the License at 13 * 14 * http://www.apache.org/licenses/LICENSE-2.0 15 * 16 * Unless required by applicable law or agreed to in writing, software 17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 19 * See the License for the specific language governing permissions and 20 * limitations under the License. 21 */ 22 #ifndef MBEDTLS_X509_CRL_H 23 #define MBEDTLS_X509_CRL_H 24 25 #if !defined(MBEDTLS_CONFIG_FILE) 26 #include "mbedtls/config.h" 27 #else 28 #include MBEDTLS_CONFIG_FILE 29 #endif 30 31 #include "mbedtls/x509.h" 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 /** 38 * \addtogroup x509_module 39 * \{ */ 40 41 /** 42 * \name Structures and functions for parsing CRLs 43 * \{ 44 */ 45 46 /** 47 * Certificate revocation list entry. 48 * Contains the CA-specific serial numbers and revocation dates. 49 */ 50 typedef struct mbedtls_x509_crl_entry 51 { 52 mbedtls_x509_buf raw; 53 54 mbedtls_x509_buf serial; 55 56 mbedtls_x509_time revocation_date; 57 58 mbedtls_x509_buf entry_ext; 59 60 struct mbedtls_x509_crl_entry *next; 61 } 62 mbedtls_x509_crl_entry; 63 64 /** 65 * Certificate revocation list structure. 66 * Every CRL may have multiple entries. 67 */ 68 typedef struct mbedtls_x509_crl 69 { 70 mbedtls_x509_buf raw; /**< The raw certificate data (DER). */ 71 mbedtls_x509_buf tbs; /**< The raw certificate body (DER). The part that is To Be Signed. */ 72 73 int version; /**< CRL version (1=v1, 2=v2) */ 74 mbedtls_x509_buf sig_oid; /**< CRL signature type identifier */ 75 76 mbedtls_x509_buf issuer_raw; /**< The raw issuer data (DER). */ 77 78 mbedtls_x509_name issuer; /**< The parsed issuer data (named information object). */ 79 80 mbedtls_x509_time this_update; 81 mbedtls_x509_time next_update; 82 83 mbedtls_x509_crl_entry entry; /**< The CRL entries containing the certificate revocation times for this CA. */ 84 85 mbedtls_x509_buf crl_ext; 86 87 mbedtls_x509_buf sig_oid2; 88 mbedtls_x509_buf sig; 89 mbedtls_md_type_t sig_md; /**< Internal representation of the MD algorithm of the signature algorithm, e.g. MBEDTLS_MD_SHA256 */ 90 mbedtls_pk_type_t sig_pk; /**< Internal representation of the Public Key algorithm of the signature algorithm, e.g. MBEDTLS_PK_RSA */ 91 void *sig_opts; /**< Signature options to be passed to mbedtls_pk_verify_ext(), e.g. for RSASSA-PSS */ 92 93 struct mbedtls_x509_crl *next; 94 } 95 mbedtls_x509_crl; 96 97 /** 98 * \brief Parse a DER-encoded CRL and append it to the chained list 99 * 100 * \param chain points to the start of the chain 101 * \param buf buffer holding the CRL data in DER format 102 * \param buflen size of the buffer 103 * (including the terminating null byte for PEM data) 104 * 105 * \return 0 if successful, or a specific X509 or PEM error code 106 */ 107 int mbedtls_x509_crl_parse_der( mbedtls_x509_crl *chain, 108 const unsigned char *buf, size_t buflen ); 109 /** 110 * \brief Parse one or more CRLs and append them to the chained list 111 * 112 * \note Multiple CRLs are accepted only if using PEM format 113 * 114 * \param chain points to the start of the chain 115 * \param buf buffer holding the CRL data in PEM or DER format 116 * \param buflen size of the buffer 117 * (including the terminating null byte for PEM data) 118 * 119 * \return 0 if successful, or a specific X509 or PEM error code 120 */ 121 int mbedtls_x509_crl_parse( mbedtls_x509_crl *chain, const unsigned char *buf, size_t buflen ); 122 123 #if defined(MBEDTLS_FS_IO) 124 /** 125 * \brief Load one or more CRLs and append them to the chained list 126 * 127 * \note Multiple CRLs are accepted only if using PEM format 128 * 129 * \param chain points to the start of the chain 130 * \param path filename to read the CRLs from (in PEM or DER encoding) 131 * 132 * \return 0 if successful, or a specific X509 or PEM error code 133 */ 134 int mbedtls_x509_crl_parse_file( mbedtls_x509_crl *chain, const char *path ); 135 #endif /* MBEDTLS_FS_IO */ 136 137 /** 138 * \brief Returns an informational string about the CRL. 139 * 140 * \param buf Buffer to write to 141 * \param size Maximum size of buffer 142 * \param prefix A line prefix 143 * \param crl The X509 CRL to represent 144 * 145 * \return The length of the string written (not including the 146 * terminated nul byte), or a negative error code. 147 */ 148 int mbedtls_x509_crl_info( char *buf, size_t size, const char *prefix, 149 const mbedtls_x509_crl *crl ); 150 151 /** 152 * \brief Initialize a CRL (chain) 153 * 154 * \param crl CRL chain to initialize 155 */ 156 void mbedtls_x509_crl_init( mbedtls_x509_crl *crl ); 157 158 /** 159 * \brief Unallocate all CRL data 160 * 161 * \param crl CRL chain to free 162 */ 163 void mbedtls_x509_crl_free( mbedtls_x509_crl *crl ); 164 165 /* \} name */ 166 /* \} addtogroup x509_module */ 167 168 #ifdef __cplusplus 169 } 170 #endif 171 172 #endif /* mbedtls_x509_crl.h */ 173