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/**
* \file x509_crl.h
*
* \brief X.509 certificate revocation list parsing
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*/
#ifndef MBEDTLS_X509_CRL_H
#define MBEDTLS_X509_CRL_H
#include "mbedtls/private_access.h"
#include "mbedtls/build_info.h"
#include "mbedtls/x509.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* \addtogroup x509_module
* \{ */
/**
* \name Structures and functions for parsing CRLs
* \{
*/
/**
* Certificate revocation list entry.
* Contains the CA-specific serial numbers and revocation dates.
*
* Some fields of this structure are publicly readable. Do not modify
* them except via Mbed TLS library functions: the effect of modifying
* those fields or the data that those fields points to is unspecified.
*/
typedef struct mbedtls_x509_crl_entry {
/** Direct access to the whole entry inside the containing buffer. */
mbedtls_x509_buf raw;
/** The serial number of the revoked certificate. */
mbedtls_x509_buf serial;
/** The revocation date of this entry. */
mbedtls_x509_time revocation_date;
/** Direct access to the list of CRL entry extensions
* (an ASN.1 constructed sequence).
*
* If there are no extensions, `entry_ext.len == 0` and
* `entry_ext.p == NULL`. */
mbedtls_x509_buf entry_ext;
/** Next element in the linked list of entries.
* \p NULL indicates the end of the list.
* Do not modify this field directly. */
struct mbedtls_x509_crl_entry *next;
}
mbedtls_x509_crl_entry;
/**
* Certificate revocation list structure.
* Every CRL may have multiple entries.
*/
typedef struct mbedtls_x509_crl {
mbedtls_x509_buf raw; /**< The raw certificate data (DER). */
mbedtls_x509_buf tbs; /**< The raw certificate body (DER). The part that is To Be Signed. */
int version; /**< CRL version (1=v1, 2=v2) */
mbedtls_x509_buf sig_oid; /**< CRL signature type identifier */
mbedtls_x509_buf issuer_raw; /**< The raw issuer data (DER). */
mbedtls_x509_name issuer; /**< The parsed issuer data (named information object). */
mbedtls_x509_time this_update;
mbedtls_x509_time next_update;
mbedtls_x509_crl_entry entry; /**< The CRL entries containing the certificate revocation times for this CA. */
mbedtls_x509_buf crl_ext;
mbedtls_x509_buf MBEDTLS_PRIVATE(sig_oid2);
mbedtls_x509_buf MBEDTLS_PRIVATE(sig);
mbedtls_md_type_t MBEDTLS_PRIVATE(sig_md); /**< Internal representation of the MD algorithm of the signature algorithm, e.g. MBEDTLS_MD_SHA256 */
mbedtls_pk_type_t MBEDTLS_PRIVATE(sig_pk); /**< Internal representation of the Public Key algorithm of the signature algorithm, e.g. MBEDTLS_PK_RSA */
void *MBEDTLS_PRIVATE(sig_opts); /**< Signature options to be passed to mbedtls_pk_verify_ext(), e.g. for RSASSA-PSS */
/** Next element in the linked list of CRL.
* \p NULL indicates the end of the list.
* Do not modify this field directly. */
struct mbedtls_x509_crl *next;
}
mbedtls_x509_crl;
/**
* \brief Parse a DER-encoded CRL and append it to the chained list
*
* \note If #MBEDTLS_USE_PSA_CRYPTO is enabled, the PSA crypto
* subsystem must have been initialized by calling
* psa_crypto_init() before calling this function.
*
* \param chain points to the start of the chain
* \param buf buffer holding the CRL data in DER format
* \param buflen size of the buffer
* (including the terminating null byte for PEM data)
*
* \return 0 if successful, or a specific X509 or PEM error code
*/
int mbedtls_x509_crl_parse_der(mbedtls_x509_crl *chain,
const unsigned char *buf, size_t buflen);
/**
* \brief Parse one or more CRLs and append them to the chained list
*
* \note Multiple CRLs are accepted only if using PEM format
*
* \note If #MBEDTLS_USE_PSA_CRYPTO is enabled, the PSA crypto
* subsystem must have been initialized by calling
* psa_crypto_init() before calling this function.
*
* \param chain points to the start of the chain
* \param buf buffer holding the CRL data in PEM or DER format
* \param buflen size of the buffer
* (including the terminating null byte for PEM data)
*
* \return 0 if successful, or a specific X509 or PEM error code
*/
int mbedtls_x509_crl_parse(mbedtls_x509_crl *chain, const unsigned char *buf, size_t buflen);
#if defined(MBEDTLS_FS_IO)
/**
* \brief Load one or more CRLs and append them to the chained list
*
* \note Multiple CRLs are accepted only if using PEM format
*
* \note If #MBEDTLS_USE_PSA_CRYPTO is enabled, the PSA crypto
* subsystem must have been initialized by calling
* psa_crypto_init() before calling this function.
*
* \param chain points to the start of the chain
* \param path filename to read the CRLs from (in PEM or DER encoding)
*
* \return 0 if successful, or a specific X509 or PEM error code
*/
int mbedtls_x509_crl_parse_file(mbedtls_x509_crl *chain, const char *path);
#endif /* MBEDTLS_FS_IO */
#if !defined(MBEDTLS_X509_REMOVE_INFO)
/**
* \brief Returns an informational string about the CRL.
*
* \param buf Buffer to write to
* \param size Maximum size of buffer
* \param prefix A line prefix
* \param crl The X509 CRL to represent
*
* \return The length of the string written (not including the
* terminated nul byte), or a negative error code.
*/
int mbedtls_x509_crl_info(char *buf, size_t size, const char *prefix,
const mbedtls_x509_crl *crl);
#endif /* !MBEDTLS_X509_REMOVE_INFO */
/**
* \brief Initialize a CRL (chain)
*
* \param crl CRL chain to initialize
*/
void mbedtls_x509_crl_init(mbedtls_x509_crl *crl);
/**
* \brief Unallocate all CRL data
*
* \param crl CRL chain to free
*/
void mbedtls_x509_crl_free(mbedtls_x509_crl *crl);
/** \} name Structures and functions for parsing CRLs */
/** \} addtogroup x509_module */
#ifdef __cplusplus
}
#endif
#endif /* mbedtls_x509_crl.h */
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