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Diffstat (limited to 'include/mbedtls/x509_crt.h')
| -rw-r--r-- | include/mbedtls/x509_crt.h | 1196 |
1 files changed, 0 insertions, 1196 deletions
diff --git a/include/mbedtls/x509_crt.h b/include/mbedtls/x509_crt.h deleted file mode 100644 index 3f1a1e7..0000000 --- a/include/mbedtls/x509_crt.h +++ /dev/null @@ -1,1196 +0,0 @@ -/** - * \file x509_crt.h - * - * \brief X.509 certificate parsing and writing - */ -/* - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later - */ -#ifndef MBEDTLS_X509_CRT_H -#define MBEDTLS_X509_CRT_H -#include "mbedtls/private_access.h" - -#include "mbedtls/build_info.h" - -#include "mbedtls/x509.h" -#include "mbedtls/x509_crl.h" -#include "mbedtls/bignum.h" - -/** - * \addtogroup x509_module - * \{ - */ - -#ifdef __cplusplus -extern "C" { -#endif - -/** - * \name Structures and functions for parsing and writing X.509 certificates - * \{ - */ - -/** - * Container for an X.509 certificate. The certificate may be chained. - * - * 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_crt { - int MBEDTLS_PRIVATE(own_buffer); /**< Indicates if \c raw is owned - * by the structure or not. */ - 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; /**< The X.509 version. (1=v1, 2=v2, 3=v3) */ - mbedtls_x509_buf serial; /**< Unique id for certificate issued by a specific CA. */ - mbedtls_x509_buf sig_oid; /**< Signature algorithm, e.g. sha1RSA */ - - mbedtls_x509_buf issuer_raw; /**< The raw issuer data (DER). Used for quick comparison. */ - mbedtls_x509_buf subject_raw; /**< The raw subject data (DER). Used for quick comparison. */ - - mbedtls_x509_name issuer; /**< The parsed issuer data (named information object). */ - mbedtls_x509_name subject; /**< The parsed subject data (named information object). */ - - mbedtls_x509_time valid_from; /**< Start time of certificate validity. */ - mbedtls_x509_time valid_to; /**< End time of certificate validity. */ - - mbedtls_x509_buf pk_raw; - mbedtls_pk_context pk; /**< Container for the public key context. */ - - mbedtls_x509_buf issuer_id; /**< Optional X.509 v2/v3 issuer unique identifier. */ - mbedtls_x509_buf subject_id; /**< Optional X.509 v2/v3 subject unique identifier. */ - mbedtls_x509_buf v3_ext; /**< Optional X.509 v3 extensions. */ - mbedtls_x509_sequence subject_alt_names; /**< Optional list of raw entries of Subject Alternative Names extension. These can be later parsed by mbedtls_x509_parse_subject_alt_name. */ - mbedtls_x509_buf subject_key_id; /**< Optional X.509 v3 extension subject key identifier. */ - mbedtls_x509_authority authority_key_id; /**< Optional X.509 v3 extension authority key identifier. */ - - mbedtls_x509_sequence certificate_policies; /**< Optional list of certificate policies (Only anyPolicy is printed and enforced, however the rest of the policies are still listed). */ - - int MBEDTLS_PRIVATE(ext_types); /**< Bit string containing detected and parsed extensions */ - int MBEDTLS_PRIVATE(ca_istrue); /**< Optional Basic Constraint extension value: 1 if this certificate belongs to a CA, 0 otherwise. */ - int MBEDTLS_PRIVATE(max_pathlen); /**< Optional Basic Constraint extension value: The maximum path length to the root certificate. Path length is 1 higher than RFC 5280 'meaning', so 1+ */ - - unsigned int MBEDTLS_PRIVATE(key_usage); /**< Optional key usage extension value: See the values in x509.h */ - - mbedtls_x509_sequence ext_key_usage; /**< Optional list of extended key usage OIDs. */ - - unsigned char MBEDTLS_PRIVATE(ns_cert_type); /**< Optional Netscape certificate type extension value: See the values in x509.h */ - - mbedtls_x509_buf MBEDTLS_PRIVATE(sig); /**< Signature: hash of the tbs part signed with the private key. */ - 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 certificate in the linked list that constitutes the CA chain. - * \p NULL indicates the end of the list. - * Do not modify this field directly. */ - struct mbedtls_x509_crt *next; -} -mbedtls_x509_crt; - -/** - * Build flag from an algorithm/curve identifier (pk, md, ecp) - * Since 0 is always XXX_NONE, ignore it. - */ -#define MBEDTLS_X509_ID_FLAG(id) (1 << ((id) - 1)) - -/** - * Security profile for certificate verification. - * - * All lists are bitfields, built by ORing flags from MBEDTLS_X509_ID_FLAG(). - * - * The fields of this structure are part of the public API and can be - * manipulated directly by applications. Future versions of the library may - * add extra fields or reorder existing fields. - * - * You can create custom profiles by starting from a copy of - * an existing profile, such as mbedtls_x509_crt_profile_default or - * mbedtls_x509_ctr_profile_none and then tune it to your needs. - * - * For example to allow SHA-224 in addition to the default: - * - * mbedtls_x509_crt_profile my_profile = mbedtls_x509_crt_profile_default; - * my_profile.allowed_mds |= MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ); - * - * Or to allow only RSA-3072+ with SHA-256: - * - * mbedtls_x509_crt_profile my_profile = mbedtls_x509_crt_profile_none; - * my_profile.allowed_mds = MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ); - * my_profile.allowed_pks = MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_RSA ); - * my_profile.rsa_min_bitlen = 3072; - */ -typedef struct mbedtls_x509_crt_profile { - uint32_t allowed_mds; /**< MDs for signatures */ - uint32_t allowed_pks; /**< PK algs for public keys; - * this applies to all certificates - * in the provided chain. */ - uint32_t allowed_curves; /**< Elliptic curves for ECDSA */ - uint32_t rsa_min_bitlen; /**< Minimum size for RSA keys */ -} -mbedtls_x509_crt_profile; - -#define MBEDTLS_X509_CRT_VERSION_1 0 -#define MBEDTLS_X509_CRT_VERSION_2 1 -#define MBEDTLS_X509_CRT_VERSION_3 2 - -#define MBEDTLS_X509_RFC5280_MAX_SERIAL_LEN 20 -#define MBEDTLS_X509_RFC5280_UTC_TIME_LEN 15 - -#if !defined(MBEDTLS_X509_MAX_FILE_PATH_LEN) -#define MBEDTLS_X509_MAX_FILE_PATH_LEN 512 -#endif - -/* This macro unfolds to the concatenation of macro invocations - * X509_CRT_ERROR_INFO( error code, - * error code as string, - * human readable description ) - * where X509_CRT_ERROR_INFO is defined by the user. - * See x509_crt.c for an example of how to use this. */ -#define MBEDTLS_X509_CRT_ERROR_INFO_LIST \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_EXPIRED, \ - "MBEDTLS_X509_BADCERT_EXPIRED", \ - "The certificate validity has expired") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_REVOKED, \ - "MBEDTLS_X509_BADCERT_REVOKED", \ - "The certificate has been revoked (is on a CRL)") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_CN_MISMATCH, \ - "MBEDTLS_X509_BADCERT_CN_MISMATCH", \ - "The certificate Common Name (CN) does not match with the expected CN") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_NOT_TRUSTED, \ - "MBEDTLS_X509_BADCERT_NOT_TRUSTED", \ - "The certificate is not correctly signed by the trusted CA") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCRL_NOT_TRUSTED, \ - "MBEDTLS_X509_BADCRL_NOT_TRUSTED", \ - "The CRL is not correctly signed by the trusted CA") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCRL_EXPIRED, \ - "MBEDTLS_X509_BADCRL_EXPIRED", \ - "The CRL is expired") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_MISSING, \ - "MBEDTLS_X509_BADCERT_MISSING", \ - "Certificate was missing") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_SKIP_VERIFY, \ - "MBEDTLS_X509_BADCERT_SKIP_VERIFY", \ - "Certificate verification was skipped") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_OTHER, \ - "MBEDTLS_X509_BADCERT_OTHER", \ - "Other reason (can be used by verify callback)") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_FUTURE, \ - "MBEDTLS_X509_BADCERT_FUTURE", \ - "The certificate validity starts in the future") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCRL_FUTURE, \ - "MBEDTLS_X509_BADCRL_FUTURE", \ - "The CRL is from the future") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_KEY_USAGE, \ - "MBEDTLS_X509_BADCERT_KEY_USAGE", \ - "Usage does not match the keyUsage extension") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_EXT_KEY_USAGE, \ - "MBEDTLS_X509_BADCERT_EXT_KEY_USAGE", \ - "Usage does not match the extendedKeyUsage extension") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_NS_CERT_TYPE, \ - "MBEDTLS_X509_BADCERT_NS_CERT_TYPE", \ - "Usage does not match the nsCertType extension") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_BAD_MD, \ - "MBEDTLS_X509_BADCERT_BAD_MD", \ - "The certificate is signed with an unacceptable hash.") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_BAD_PK, \ - "MBEDTLS_X509_BADCERT_BAD_PK", \ - "The certificate is signed with an unacceptable PK alg (eg RSA vs ECDSA).") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCERT_BAD_KEY, \ - "MBEDTLS_X509_BADCERT_BAD_KEY", \ - "The certificate is signed with an unacceptable key (eg bad curve, RSA too short).") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCRL_BAD_MD, \ - "MBEDTLS_X509_BADCRL_BAD_MD", \ - "The CRL is signed with an unacceptable hash.") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCRL_BAD_PK, \ - "MBEDTLS_X509_BADCRL_BAD_PK", \ - "The CRL is signed with an unacceptable PK alg (eg RSA vs ECDSA).") \ - X509_CRT_ERROR_INFO(MBEDTLS_X509_BADCRL_BAD_KEY, \ - "MBEDTLS_X509_BADCRL_BAD_KEY", \ - "The CRL is signed with an unacceptable key (eg bad curve, RSA too short).") - -/** - * Container for writing a certificate (CRT) - */ -typedef struct mbedtls_x509write_cert { - int MBEDTLS_PRIVATE(version); - unsigned char MBEDTLS_PRIVATE(serial)[MBEDTLS_X509_RFC5280_MAX_SERIAL_LEN]; - size_t MBEDTLS_PRIVATE(serial_len); - mbedtls_pk_context *MBEDTLS_PRIVATE(subject_key); - mbedtls_pk_context *MBEDTLS_PRIVATE(issuer_key); - mbedtls_asn1_named_data *MBEDTLS_PRIVATE(subject); - mbedtls_asn1_named_data *MBEDTLS_PRIVATE(issuer); - mbedtls_md_type_t MBEDTLS_PRIVATE(md_alg); - char MBEDTLS_PRIVATE(not_before)[MBEDTLS_X509_RFC5280_UTC_TIME_LEN + 1]; - char MBEDTLS_PRIVATE(not_after)[MBEDTLS_X509_RFC5280_UTC_TIME_LEN + 1]; - mbedtls_asn1_named_data *MBEDTLS_PRIVATE(extensions); -} -mbedtls_x509write_cert; - -/** - * \brief Set Subject Alternative Name - * - * \param ctx Certificate context to use - * \param san_list List of SAN values - * - * \return 0 if successful, or MBEDTLS_ERR_X509_ALLOC_FAILED - * - * \note "dnsName", "uniformResourceIdentifier", "IP address", - * "otherName", and "DirectoryName", as defined in RFC 5280, - * are supported. - */ -int mbedtls_x509write_crt_set_subject_alternative_name(mbedtls_x509write_cert *ctx, - const mbedtls_x509_san_list *san_list); - -/** - * Item in a verification chain: cert and flags for it - */ -typedef struct { - mbedtls_x509_crt *MBEDTLS_PRIVATE(crt); - uint32_t MBEDTLS_PRIVATE(flags); -} mbedtls_x509_crt_verify_chain_item; - -/** - * Max size of verification chain: end-entity + intermediates + trusted root - */ -#define MBEDTLS_X509_MAX_VERIFY_CHAIN_SIZE (MBEDTLS_X509_MAX_INTERMEDIATE_CA + 2) - -/** - * Verification chain as built by \c mbedtls_crt_verify_chain() - */ -typedef struct { - mbedtls_x509_crt_verify_chain_item MBEDTLS_PRIVATE(items)[MBEDTLS_X509_MAX_VERIFY_CHAIN_SIZE]; - unsigned MBEDTLS_PRIVATE(len); - -#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK) - /* This stores the list of potential trusted signers obtained from - * the CA callback used for the CRT verification, if configured. - * We must track it somewhere because the callback passes its - * ownership to the caller. */ - mbedtls_x509_crt *MBEDTLS_PRIVATE(trust_ca_cb_result); -#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */ -} mbedtls_x509_crt_verify_chain; - -#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) - -/** - * \brief Context for resuming X.509 verify operations - */ -typedef struct { - /* for check_signature() */ - mbedtls_pk_restart_ctx MBEDTLS_PRIVATE(pk); - - /* for find_parent_in() */ - mbedtls_x509_crt *MBEDTLS_PRIVATE(parent); /* non-null iff parent_in in progress */ - mbedtls_x509_crt *MBEDTLS_PRIVATE(fallback_parent); - int MBEDTLS_PRIVATE(fallback_signature_is_good); - - /* for find_parent() */ - int MBEDTLS_PRIVATE(parent_is_trusted); /* -1 if find_parent is not in progress */ - - /* for verify_chain() */ - enum { - x509_crt_rs_none, - x509_crt_rs_find_parent, - } MBEDTLS_PRIVATE(in_progress); /* none if no operation is in progress */ - int MBEDTLS_PRIVATE(self_cnt); - mbedtls_x509_crt_verify_chain MBEDTLS_PRIVATE(ver_chain); - -} mbedtls_x509_crt_restart_ctx; - -#else /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ - -/* Now we can declare functions that take a pointer to that */ -typedef void mbedtls_x509_crt_restart_ctx; - -#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ - -#if defined(MBEDTLS_X509_CRT_PARSE_C) -/** - * Default security profile. Should provide a good balance between security - * and compatibility with current deployments. - * - * This profile permits: - * - SHA2 hashes with at least 256 bits: SHA-256, SHA-384, SHA-512. - * - Elliptic curves with 255 bits and above except secp256k1. - * - RSA with 2048 bits and above. - * - * New minor versions of Mbed TLS may extend this profile, for example if - * new algorithms are added to the library. New minor versions of Mbed TLS will - * not reduce this profile unless serious security concerns require it. - */ -extern const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_default; - -/** - * Expected next default profile. Recommended for new deployments. - * Currently targets a 128-bit security level, except for allowing RSA-2048. - * This profile may change at any time. - */ -extern const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_next; - -/** - * NSA Suite B profile. - */ -extern const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_suiteb; - -/** - * Empty profile that allows nothing. Useful as a basis for constructing - * custom profiles. - */ -extern const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_none; - -/** - * \brief Parse a single DER formatted certificate and add it - * to the end of the provided 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 The pointer to the start of the CRT chain to attach to. - * When parsing the first CRT in a chain, this should point - * to an instance of ::mbedtls_x509_crt initialized through - * mbedtls_x509_crt_init(). - * \param buf The buffer holding the DER encoded certificate. - * \param buflen The size in Bytes of \p buf. - * - * \note This function makes an internal copy of the CRT buffer - * \p buf. In particular, \p buf may be destroyed or reused - * after this call returns. To avoid duplicating the CRT - * buffer (at the cost of stricter lifetime constraints), - * use mbedtls_x509_crt_parse_der_nocopy() instead. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -int mbedtls_x509_crt_parse_der(mbedtls_x509_crt *chain, - const unsigned char *buf, - size_t buflen); - -/** - * \brief The type of certificate extension callbacks. - * - * Callbacks of this type are passed to and used by the - * mbedtls_x509_crt_parse_der_with_ext_cb() routine when - * it encounters either an unsupported extension or a - * "certificate policies" extension containing any - * unsupported certificate policies. - * Future versions of the library may invoke the callback - * in other cases, if and when the need arises. - * - * \param p_ctx An opaque context passed to the callback. - * \param crt The certificate being parsed. - * \param oid The OID of the extension. - * \param critical Whether the extension is critical. - * \param p Pointer to the start of the extension value - * (the content of the OCTET STRING). - * \param end End of extension value. - * - * \note The callback must fail and return a negative error code - * if it can not parse or does not support the extension. - * When the callback fails to parse a critical extension - * mbedtls_x509_crt_parse_der_with_ext_cb() also fails. - * When the callback fails to parse a non critical extension - * mbedtls_x509_crt_parse_der_with_ext_cb() simply skips - * the extension and continues parsing. - * - * \return \c 0 on success. - * \return A negative error code on failure. - */ -typedef int (*mbedtls_x509_crt_ext_cb_t)(void *p_ctx, - mbedtls_x509_crt const *crt, - mbedtls_x509_buf const *oid, - int critical, - const unsigned char *p, - const unsigned char *end); - -/** - * \brief Parse a single DER formatted certificate and add it - * to the end of the provided 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 The pointer to the start of the CRT chain to attach to. - * When parsing the first CRT in a chain, this should point - * to an instance of ::mbedtls_x509_crt initialized through - * mbedtls_x509_crt_init(). - * \param buf The buffer holding the DER encoded certificate. - * \param buflen The size in Bytes of \p buf. - * \param make_copy When not zero this function makes an internal copy of the - * CRT buffer \p buf. In particular, \p buf may be destroyed - * or reused after this call returns. - * When zero this function avoids duplicating the CRT buffer - * by taking temporary ownership thereof until the CRT - * is destroyed (like mbedtls_x509_crt_parse_der_nocopy()) - * \param cb A callback invoked for every unsupported certificate - * extension. - * \param p_ctx An opaque context passed to the callback. - * - * \note This call is functionally equivalent to - * mbedtls_x509_crt_parse_der(), and/or - * mbedtls_x509_crt_parse_der_nocopy() - * but it calls the callback with every unsupported - * certificate extension and additionally the - * "certificate policies" extension if it contains any - * unsupported certificate policies. - * The callback must return a negative error code if it - * does not know how to handle such an extension. - * When the callback fails to parse a critical extension - * mbedtls_x509_crt_parse_der_with_ext_cb() also fails. - * When the callback fails to parse a non critical extension - * mbedtls_x509_crt_parse_der_with_ext_cb() simply skips - * the extension and continues parsing. - * Future versions of the library may invoke the callback - * in other cases, if and when the need arises. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -int mbedtls_x509_crt_parse_der_with_ext_cb(mbedtls_x509_crt *chain, - const unsigned char *buf, - size_t buflen, - int make_copy, - mbedtls_x509_crt_ext_cb_t cb, - void *p_ctx); - -/** - * \brief Parse a single DER formatted certificate and add it - * to the end of the provided chained list. This is a - * variant of mbedtls_x509_crt_parse_der() which takes - * temporary ownership of the CRT buffer until the CRT - * is destroyed. - * - * \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 The pointer to the start of the CRT chain to attach to. - * When parsing the first CRT in a chain, this should point - * to an instance of ::mbedtls_x509_crt initialized through - * mbedtls_x509_crt_init(). - * \param buf The address of the readable buffer holding the DER encoded - * certificate to use. On success, this buffer must be - * retained and not be changed for the lifetime of the - * CRT chain \p chain, that is, until \p chain is destroyed - * through a call to mbedtls_x509_crt_free(). - * \param buflen The size in Bytes of \p buf. - * - * \note This call is functionally equivalent to - * mbedtls_x509_crt_parse_der(), but it avoids creating a - * copy of the input buffer at the cost of stronger lifetime - * constraints. This is useful in constrained environments - * where duplication of the CRT cannot be tolerated. - * - * \return \c 0 if successful. - * \return A negative error code on failure. - */ -int mbedtls_x509_crt_parse_der_nocopy(mbedtls_x509_crt *chain, - const unsigned char *buf, - size_t buflen); - -/** - * \brief Parse one DER-encoded or one or more concatenated PEM-encoded - * certificates and add them to the chained list. - * - * For CRTs in PEM encoding, the function parses permissively: - * if at least one certificate can be parsed, the function - * returns the number of certificates for which parsing failed - * (hence \c 0 if all certificates were parsed successfully). - * If no certificate could be parsed, the function returns - * the first (negative) error encountered during parsing. - * - * PEM encoded certificates may be interleaved by other data - * such as human readable descriptions of their content, as - * long as the certificates are enclosed in the PEM specific - * '-----{BEGIN/END} CERTIFICATE-----' delimiters. - * - * \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 The chain to which to add the parsed certificates. - * \param buf The buffer holding the certificate data in PEM or DER format. - * For certificates in PEM encoding, this may be a concatenation - * of multiple certificates; for DER encoding, the buffer must - * comprise exactly one certificate. - * \param buflen The size of \p buf, including the terminating \c NULL byte - * in case of PEM encoded data. - * - * \return \c 0 if all certificates were parsed successfully. - * \return The (positive) number of certificates that couldn't - * be parsed if parsing was partly successful (see above). - * \return A negative X509 or PEM error code otherwise. - * - */ -int mbedtls_x509_crt_parse(mbedtls_x509_crt *chain, const unsigned char *buf, size_t buflen); - -#if defined(MBEDTLS_FS_IO) -/** - * \brief Load one or more certificates and add them - * to the chained list. Parses permissively. If some - * certificates can be parsed, the result is the number - * of failed certificates it encountered. If none complete - * correctly, the first error is returned. - * - * \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 certificates from - * - * \return 0 if all certificates parsed successfully, a positive number - * if partly successful or a specific X509 or PEM error code - */ -int mbedtls_x509_crt_parse_file(mbedtls_x509_crt *chain, const char *path); - -/** - * \brief Load one or more certificate files from a path and add them - * to the chained list. Parses permissively. If some - * certificates can be parsed, the result is the number - * of failed certificates it encountered. If none complete - * correctly, the first error is returned. - * - * \param chain points to the start of the chain - * \param path directory / folder to read the certificate files from - * - * \return 0 if all certificates parsed successfully, a positive number - * if partly successful or a specific X509 or PEM error code - */ -int mbedtls_x509_crt_parse_path(mbedtls_x509_crt *chain, const char *path); - -#endif /* MBEDTLS_FS_IO */ - -#if !defined(MBEDTLS_X509_REMOVE_INFO) -/** - * \brief Returns an informational string about the - * certificate. - * - * \param buf Buffer to write to - * \param size Maximum size of buffer - * \param prefix A line prefix - * \param crt The X509 certificate to represent - * - * \return The length of the string written (not including the - * terminated nul byte), or a negative error code. - */ -int mbedtls_x509_crt_info(char *buf, size_t size, const char *prefix, - const mbedtls_x509_crt *crt); - -/** - * \brief Returns an informational string about the - * verification status of a certificate. - * - * \param buf Buffer to write to - * \param size Maximum size of buffer - * \param prefix A line prefix - * \param flags Verification flags created by mbedtls_x509_crt_verify() - * - * \return The length of the string written (not including the - * terminated nul byte), or a negative error code. - */ -int mbedtls_x509_crt_verify_info(char *buf, size_t size, const char *prefix, - uint32_t flags); -#endif /* !MBEDTLS_X509_REMOVE_INFO */ - -/** - * \brief Verify a chain of certificates. - * - * The verify callback is a user-supplied callback that - * can clear / modify / add flags for a certificate. If set, - * the verification callback is called for each - * certificate in the chain (from the trust-ca down to the - * presented crt). The parameters for the callback are: - * (void *parameter, mbedtls_x509_crt *crt, int certificate_depth, - * int *flags). With the flags representing current flags for - * that specific certificate and the certificate depth from - * the bottom (Peer cert depth = 0). - * - * All flags left after returning from the callback - * are also returned to the application. The function should - * return 0 for anything (including invalid certificates) - * other than fatal error, as a non-zero return code - * immediately aborts the verification process. For fatal - * errors, a specific error code should be used (different - * from MBEDTLS_ERR_X509_CERT_VERIFY_FAILED which should not - * be returned at this point), or MBEDTLS_ERR_X509_FATAL_ERROR - * can be used if no better code is available. - * - * \note In case verification failed, the results can be displayed - * using \c mbedtls_x509_crt_verify_info() - * - * \note Same as \c mbedtls_x509_crt_verify_with_profile() with the - * default security profile. - * - * \note It is your responsibility to provide up-to-date CRLs for - * all trusted CAs. If no CRL is provided for the CA that was - * used to sign the certificate, CRL verification is skipped - * silently, that is *without* setting any flag. - * - * \note The \c trust_ca list can contain two types of certificates: - * (1) those of trusted root CAs, so that certificates - * chaining up to those CAs will be trusted, and (2) - * self-signed end-entity certificates to be trusted (for - * specific peers you know) - in that case, the self-signed - * certificate doesn't need to have the CA bit set. - * - * \param crt The certificate chain to be verified. - * \param trust_ca The list of trusted CAs. - * \param ca_crl The list of CRLs for trusted CAs. - * \param cn The expected Common Name. This will be checked to be - * present in the certificate's subjectAltNames extension or, - * if this extension is absent, as a CN component in its - * Subject name. DNS names and IP addresses are fully - * supported, while the URI subtype is partially supported: - * only exact matching, without any normalization procedures - * described in 7.4 of RFC5280, will result in a positive - * URI verification. - * This may be \c NULL if the CN need not be verified. - * \param flags The address at which to store the result of the verification. - * If the verification couldn't be completed, the flag value is - * set to (uint32_t) -1. - * \param f_vrfy The verification callback to use. See the documentation - * of mbedtls_x509_crt_verify() for more information. - * \param p_vrfy The context to be passed to \p f_vrfy. - * - * \return \c 0 if the chain is valid with respect to the - * passed CN, CAs, CRLs and security profile. - * \return #MBEDTLS_ERR_X509_CERT_VERIFY_FAILED in case the - * certificate chain verification failed. In this case, - * \c *flags will have one or more - * \c MBEDTLS_X509_BADCERT_XXX or \c MBEDTLS_X509_BADCRL_XXX - * flags set. - * \return Another negative error code in case of a fatal error - * encountered during the verification process. - */ -int mbedtls_x509_crt_verify(mbedtls_x509_crt *crt, - mbedtls_x509_crt *trust_ca, - mbedtls_x509_crl *ca_crl, - const char *cn, uint32_t *flags, - int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), - void *p_vrfy); - -/** - * \brief Verify a chain of certificates with respect to - * a configurable security profile. - * - * \note Same as \c mbedtls_x509_crt_verify(), but with explicit - * security profile. - * - * \note The restrictions on keys (RSA minimum size, allowed curves - * for ECDSA) apply to all certificates: trusted root, - * intermediate CAs if any, and end entity certificate. - * - * \param crt The certificate chain to be verified. - * \param trust_ca The list of trusted CAs. - * \param ca_crl The list of CRLs for trusted CAs. - * \param profile The security profile to use for the verification. - * \param cn The expected Common Name. This may be \c NULL if the - * CN need not be verified. - * \param flags The address at which to store the result of the verification. - * If the verification couldn't be completed, the flag value is - * set to (uint32_t) -1. - * \param f_vrfy The verification callback to use. See the documentation - * of mbedtls_x509_crt_verify() for more information. - * \param p_vrfy The context to be passed to \p f_vrfy. - * - * \return \c 0 if the chain is valid with respect to the - * passed CN, CAs, CRLs and security profile. - * \return #MBEDTLS_ERR_X509_CERT_VERIFY_FAILED in case the - * certificate chain verification failed. In this case, - * \c *flags will have one or more - * \c MBEDTLS_X509_BADCERT_XXX or \c MBEDTLS_X509_BADCRL_XXX - * flags set. - * \return Another negative error code in case of a fatal error - * encountered during the verification process. - */ -int mbedtls_x509_crt_verify_with_profile(mbedtls_x509_crt *crt, - mbedtls_x509_crt *trust_ca, - mbedtls_x509_crl *ca_crl, - const mbedtls_x509_crt_profile *profile, - const char *cn, uint32_t *flags, - int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), - void *p_vrfy); - -/** - * \brief Restartable version of \c mbedtls_crt_verify_with_profile() - * - * \note Performs the same job as \c mbedtls_crt_verify_with_profile() - * but can return early and restart according to the limit - * set with \c mbedtls_ecp_set_max_ops() to reduce blocking. - * - * \param crt The certificate chain to be verified. - * \param trust_ca The list of trusted CAs. - * \param ca_crl The list of CRLs for trusted CAs. - * \param profile The security profile to use for the verification. - * \param cn The expected Common Name. This may be \c NULL if the - * CN need not be verified. - * \param flags The address at which to store the result of the verification. - * If the verification couldn't be completed, the flag value is - * set to (uint32_t) -1. - * \param f_vrfy The verification callback to use. See the documentation - * of mbedtls_x509_crt_verify() for more information. - * \param p_vrfy The context to be passed to \p f_vrfy. - * \param rs_ctx The restart context to use. This may be set to \c NULL - * to disable restartable ECC. - * - * \return See \c mbedtls_crt_verify_with_profile(), or - * \return #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of - * operations was reached: see \c mbedtls_ecp_set_max_ops(). - */ -int mbedtls_x509_crt_verify_restartable(mbedtls_x509_crt *crt, - mbedtls_x509_crt *trust_ca, - mbedtls_x509_crl *ca_crl, - const mbedtls_x509_crt_profile *profile, - const char *cn, uint32_t *flags, - int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), - void *p_vrfy, - mbedtls_x509_crt_restart_ctx *rs_ctx); - -/** - * \brief The type of trusted certificate callbacks. - * - * Callbacks of this type are passed to and used by the CRT - * verification routine mbedtls_x509_crt_verify_with_ca_cb() - * when looking for trusted signers of a given certificate. - * - * On success, the callback returns a list of trusted - * certificates to be considered as potential signers - * for the input certificate. - * - * \param p_ctx An opaque context passed to the callback. - * \param child The certificate for which to search a potential signer. - * This will point to a readable certificate. - * \param candidate_cas The address at which to store the address of the first - * entry in the generated linked list of candidate signers. - * This will not be \c NULL. - * - * \note The callback must only return a non-zero value on a - * fatal error. If, in contrast, the search for a potential - * signer completes without a single candidate, the - * callback must return \c 0 and set \c *candidate_cas - * to \c NULL. - * - * \return \c 0 on success. In this case, \c *candidate_cas points - * to a heap-allocated linked list of instances of - * ::mbedtls_x509_crt, and ownership of this list is passed - * to the caller. - * \return A negative error code on failure. - */ -typedef int (*mbedtls_x509_crt_ca_cb_t)(void *p_ctx, - mbedtls_x509_crt const *child, - mbedtls_x509_crt **candidate_cas); - -#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK) -/** - * \brief Version of \c mbedtls_x509_crt_verify_with_profile() which - * uses a callback to acquire the list of trusted CA - * certificates. - * - * \param crt The certificate chain to be verified. - * \param f_ca_cb The callback to be used to query for potential signers - * of a given child certificate. See the documentation of - * ::mbedtls_x509_crt_ca_cb_t for more information. - * \param p_ca_cb The opaque context to be passed to \p f_ca_cb. - * \param profile The security profile for the verification. - * \param cn The expected Common Name. This may be \c NULL if the - * CN need not be verified. - * \param flags The address at which to store the result of the verification. - * If the verification couldn't be completed, the flag value is - * set to (uint32_t) -1. - * \param f_vrfy The verification callback to use. See the documentation - * of mbedtls_x509_crt_verify() for more information. - * \param p_vrfy The context to be passed to \p f_vrfy. - * - * \return See \c mbedtls_crt_verify_with_profile(). - */ -int mbedtls_x509_crt_verify_with_ca_cb(mbedtls_x509_crt *crt, - mbedtls_x509_crt_ca_cb_t f_ca_cb, - void *p_ca_cb, - const mbedtls_x509_crt_profile *profile, - const char *cn, uint32_t *flags, - int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *), - void *p_vrfy); - -#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */ - -/** - * \brief Check usage of certificate against keyUsage extension. - * - * \param crt Leaf certificate used. - * \param usage Intended usage(s) (eg MBEDTLS_X509_KU_KEY_ENCIPHERMENT - * before using the certificate to perform an RSA key - * exchange). - * - * \note Except for decipherOnly and encipherOnly, a bit set in the - * usage argument means this bit MUST be set in the - * certificate. For decipherOnly and encipherOnly, it means - * that bit MAY be set. - * - * \return 0 is these uses of the certificate are allowed, - * MBEDTLS_ERR_X509_BAD_INPUT_DATA if the keyUsage extension - * is present but does not match the usage argument. - * - * \note You should only call this function on leaf certificates, on - * (intermediate) CAs the keyUsage extension is automatically - * checked by \c mbedtls_x509_crt_verify(). - */ -int mbedtls_x509_crt_check_key_usage(const mbedtls_x509_crt *crt, - unsigned int usage); - -/** - * \brief Check usage of certificate against extendedKeyUsage. - * - * \param crt Leaf certificate used. - * \param usage_oid Intended usage (eg MBEDTLS_OID_SERVER_AUTH or - * MBEDTLS_OID_CLIENT_AUTH). - * \param usage_len Length of usage_oid (eg given by MBEDTLS_OID_SIZE()). - * - * \return 0 if this use of the certificate is allowed, - * MBEDTLS_ERR_X509_BAD_INPUT_DATA if not. - * - * \note Usually only makes sense on leaf certificates. - */ -int mbedtls_x509_crt_check_extended_key_usage(const mbedtls_x509_crt *crt, - const char *usage_oid, - size_t usage_len); - -#if defined(MBEDTLS_X509_CRL_PARSE_C) -/** - * \brief Verify the certificate revocation status - * - * \param crt a certificate to be verified - * \param crl the CRL to verify against - * - * \return 1 if the certificate is revoked, 0 otherwise - * - */ -int mbedtls_x509_crt_is_revoked(const mbedtls_x509_crt *crt, const mbedtls_x509_crl *crl); -#endif /* MBEDTLS_X509_CRL_PARSE_C */ - -/** - * \brief Initialize a certificate (chain) - * - * \param crt Certificate chain to initialize - */ -void mbedtls_x509_crt_init(mbedtls_x509_crt *crt); - -/** - * \brief Unallocate all certificate data - * - * \param crt Certificate chain to free - */ -void mbedtls_x509_crt_free(mbedtls_x509_crt *crt); - -#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) -/** - * \brief Initialize a restart context - */ -void mbedtls_x509_crt_restart_init(mbedtls_x509_crt_restart_ctx *ctx); - -/** - * \brief Free the components of a restart context - */ -void mbedtls_x509_crt_restart_free(mbedtls_x509_crt_restart_ctx *ctx); -#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ -#endif /* MBEDTLS_X509_CRT_PARSE_C */ - -/** - * \brief Query certificate for given extension type - * - * \param[in] ctx Certificate context to be queried, must not be \c NULL - * \param ext_type Extension type being queried for, must be a valid - * extension type. Must be one of the MBEDTLS_X509_EXT_XXX - * values - * - * \return 0 if the given extension type is not present, - * non-zero otherwise - */ -static inline int mbedtls_x509_crt_has_ext_type(const mbedtls_x509_crt *ctx, - int ext_type) -{ - return ctx->MBEDTLS_PRIVATE(ext_types) & ext_type; -} - -/** \} name Structures and functions for parsing and writing X.509 certificates */ - -#if defined(MBEDTLS_X509_CRT_WRITE_C) -/** - * \brief Initialize a CRT writing context - * - * \param ctx CRT context to initialize - */ -void mbedtls_x509write_crt_init(mbedtls_x509write_cert *ctx); - -/** - * \brief Set the version for a Certificate - * Default: MBEDTLS_X509_CRT_VERSION_3 - * - * \param ctx CRT context to use - * \param version version to set (MBEDTLS_X509_CRT_VERSION_1, MBEDTLS_X509_CRT_VERSION_2 or - * MBEDTLS_X509_CRT_VERSION_3) - */ -void mbedtls_x509write_crt_set_version(mbedtls_x509write_cert *ctx, int version); - -#if defined(MBEDTLS_BIGNUM_C) && !defined(MBEDTLS_DEPRECATED_REMOVED) -/** - * \brief Set the serial number for a Certificate. - * - * \deprecated This function is deprecated and will be removed in a - * future version of the library. Please use - * mbedtls_x509write_crt_set_serial_raw() instead. - * - * \note Even though the MBEDTLS_BIGNUM_C guard looks redundant since - * X509 depends on PK and PK depends on BIGNUM, this emphasizes - * a direct dependency between X509 and BIGNUM which is going - * to be deprecated in the future. - * - * \param ctx CRT context to use - * \param serial serial number to set - * - * \return 0 if successful - */ -int MBEDTLS_DEPRECATED mbedtls_x509write_crt_set_serial( - mbedtls_x509write_cert *ctx, const mbedtls_mpi *serial); -#endif // MBEDTLS_BIGNUM_C && !MBEDTLS_DEPRECATED_REMOVED - -/** - * \brief Set the serial number for a Certificate. - * - * \param ctx CRT context to use - * \param serial A raw array of bytes containing the serial number in big - * endian format - * \param serial_len Length of valid bytes (expressed in bytes) in \p serial - * input buffer - * - * \return 0 if successful, or - * MBEDTLS_ERR_X509_BAD_INPUT_DATA if the provided input buffer - * is too big (longer than MBEDTLS_X509_RFC5280_MAX_SERIAL_LEN) - */ -int mbedtls_x509write_crt_set_serial_raw(mbedtls_x509write_cert *ctx, - unsigned char *serial, size_t serial_len); - -/** - * \brief Set the validity period for a Certificate - * Timestamps should be in string format for UTC timezone - * i.e. "YYYYMMDDhhmmss" - * e.g. "20131231235959" for December 31st 2013 - * at 23:59:59 - * - * \param ctx CRT context to use - * \param not_before not_before timestamp - * \param not_after not_after timestamp - * - * \return 0 if timestamp was parsed successfully, or - * a specific error code - */ -int mbedtls_x509write_crt_set_validity(mbedtls_x509write_cert *ctx, const char *not_before, - const char *not_after); - -/** - * \brief Set the issuer name for a Certificate - * Issuer names should contain a comma-separated list - * of OID types and values: - * e.g. "C=UK,O=ARM,CN=Mbed TLS CA" - * - * \param ctx CRT context to use - * \param issuer_name issuer name to set - * - * \return 0 if issuer name was parsed successfully, or - * a specific error code - */ -int mbedtls_x509write_crt_set_issuer_name(mbedtls_x509write_cert *ctx, - const char *issuer_name); - -/** - * \brief Set the subject name for a Certificate - * Subject names should contain a comma-separated list - * of OID types and values: - * e.g. "C=UK,O=ARM,CN=Mbed TLS Server 1" - * - * \param ctx CRT context to use - * \param subject_name subject name to set - * - * \return 0 if subject name was parsed successfully, or - * a specific error code - */ -int mbedtls_x509write_crt_set_subject_name(mbedtls_x509write_cert *ctx, - const char *subject_name); - -/** - * \brief Set the subject public key for the certificate - * - * \param ctx CRT context to use - * \param key public key to include - */ -void mbedtls_x509write_crt_set_subject_key(mbedtls_x509write_cert *ctx, mbedtls_pk_context *key); - -/** - * \brief Set the issuer key used for signing the certificate - * - * \param ctx CRT context to use - * \param key private key to sign with - */ -void mbedtls_x509write_crt_set_issuer_key(mbedtls_x509write_cert *ctx, mbedtls_pk_context *key); - -/** - * \brief Set the MD algorithm to use for the signature - * (e.g. MBEDTLS_MD_SHA1) - * - * \param ctx CRT context to use - * \param md_alg MD algorithm to use - */ -void mbedtls_x509write_crt_set_md_alg(mbedtls_x509write_cert *ctx, mbedtls_md_type_t md_alg); - -/** - * \brief Generic function to add to or replace an extension in the - * CRT - * - * \param ctx CRT context to use - * \param oid OID of the extension - * \param oid_len length of the OID - * \param critical if the extension is critical (per the RFC's definition) - * \param val value of the extension OCTET STRING - * \param val_len length of the value data - * - * \return 0 if successful, or a MBEDTLS_ERR_X509_ALLOC_FAILED - */ -int mbedtls_x509write_crt_set_extension(mbedtls_x509write_cert *ctx, - const char *oid, size_t oid_len, - int critical, - const unsigned char *val, size_t val_len); - -/** - * \brief Set the basicConstraints extension for a CRT - * - * \param ctx CRT context to use - * \param is_ca is this a CA certificate - * \param max_pathlen maximum length of certificate chains below this - * certificate (only for CA certificates, -1 is - * unlimited) - * - * \return 0 if successful, or a MBEDTLS_ERR_X509_ALLOC_FAILED - */ -int mbedtls_x509write_crt_set_basic_constraints(mbedtls_x509write_cert *ctx, - int is_ca, int max_pathlen); - -#if defined(MBEDTLS_MD_CAN_SHA1) -/** - * \brief Set the subjectKeyIdentifier extension for a CRT - * Requires that mbedtls_x509write_crt_set_subject_key() has been - * called before - * - * \param ctx CRT context to use - * - * \return 0 if successful, or a MBEDTLS_ERR_X509_ALLOC_FAILED - */ -int mbedtls_x509write_crt_set_subject_key_identifier(mbedtls_x509write_cert *ctx); - -/** - * \brief Set the authorityKeyIdentifier extension for a CRT - * Requires that mbedtls_x509write_crt_set_issuer_key() has been - * called before - * - * \param ctx CRT context to use - * - * \return 0 if successful, or a MBEDTLS_ERR_X509_ALLOC_FAILED - */ -int mbedtls_x509write_crt_set_authority_key_identifier(mbedtls_x509write_cert *ctx); -#endif /* MBEDTLS_MD_CAN_SHA1 */ - -/** - * \brief Set the Key Usage Extension flags - * (e.g. MBEDTLS_X509_KU_DIGITAL_SIGNATURE | MBEDTLS_X509_KU_KEY_CERT_SIGN) - * - * \param ctx CRT context to use - * \param key_usage key usage flags to set - * - * \return 0 if successful, or MBEDTLS_ERR_X509_ALLOC_FAILED - */ -int mbedtls_x509write_crt_set_key_usage(mbedtls_x509write_cert *ctx, - unsigned int key_usage); - -/** - * \brief Set the Extended Key Usage Extension - * (e.g. MBEDTLS_OID_SERVER_AUTH) - * - * \param ctx CRT context to use - * \param exts extended key usage extensions to set, a sequence of - * MBEDTLS_ASN1_OID objects - * - * \return 0 if successful, or MBEDTLS_ERR_X509_ALLOC_FAILED - */ -int mbedtls_x509write_crt_set_ext_key_usage(mbedtls_x509write_cert *ctx, - const mbedtls_asn1_sequence *exts); - -/** - * \brief Set the Netscape Cert Type flags - * (e.g. MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT | MBEDTLS_X509_NS_CERT_TYPE_EMAIL) - * - * \param ctx CRT context to use - * \param ns_cert_type Netscape Cert Type flags to set - * - * \return 0 if successful, or MBEDTLS_ERR_X509_ALLOC_FAILED - */ -int mbedtls_x509write_crt_set_ns_cert_type(mbedtls_x509write_cert *ctx, - unsigned char ns_cert_type); - -/** - * \brief Free the contents of a CRT write context - * - * \param ctx CRT context to free - */ -void mbedtls_x509write_crt_free(mbedtls_x509write_cert *ctx); - -/** - * \brief Write a built up certificate to a X509 DER structure - * Note: data is written at the end of the buffer! Use the - * return value to determine where you should start - * using the buffer - * - * \param ctx certificate to write away - * \param buf buffer to write to - * \param size size of the buffer - * \param f_rng RNG function. This must not be \c NULL. - * \param p_rng RNG parameter - * - * \return length of data written if successful, or a specific - * error code - * - * \note \p f_rng is used for the signature operation. - */ -int mbedtls_x509write_crt_der(mbedtls_x509write_cert *ctx, unsigned char *buf, size_t size, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng); - -#if defined(MBEDTLS_PEM_WRITE_C) -/** - * \brief Write a built up certificate to a X509 PEM string - * - * \param ctx certificate to write away - * \param buf buffer to write to - * \param size size of the buffer - * \param f_rng RNG function. This must not be \c NULL. - * \param p_rng RNG parameter - * - * \return 0 if successful, or a specific error code - * - * \note \p f_rng is used for the signature operation. - */ -int mbedtls_x509write_crt_pem(mbedtls_x509write_cert *ctx, unsigned char *buf, size_t size, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng); -#endif /* MBEDTLS_PEM_WRITE_C */ -#endif /* MBEDTLS_X509_CRT_WRITE_C */ - -/** \} addtogroup x509_module */ - -#ifdef __cplusplus -} -#endif - -#endif /* mbedtls_x509_crt.h */ |