| /** |
| * \file x509_crt.h |
| * |
| * \brief X.509 certificate parsing and writing |
| */ |
| /* |
| * Copyright The Mbed TLS Contributors |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| * not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #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 (currently only dNSName and OtherName are listed). */ |
| |
| 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; |
| |
| /** |
| * From RFC 5280 section 4.2.1.6: |
| * OtherName ::= SEQUENCE { |
| * type-id OBJECT IDENTIFIER, |
| * value [0] EXPLICIT ANY DEFINED BY type-id } |
| * |
| * Future versions of the library may add new fields to this structure or |
| * to its embedded union and structure. |
| */ |
| typedef struct mbedtls_x509_san_other_name |
| { |
| /** |
| * The type_id is an OID as deifned in RFC 5280. |
| * To check the value of the type id, you should use |
| * \p MBEDTLS_OID_CMP with a known OID mbedtls_x509_buf. |
| */ |
| mbedtls_x509_buf type_id; /**< The type id. */ |
| union |
| { |
| /** |
| * From RFC 4108 section 5: |
| * HardwareModuleName ::= SEQUENCE { |
| * hwType OBJECT IDENTIFIER, |
| * hwSerialNum OCTET STRING } |
| */ |
| struct |
| { |
| mbedtls_x509_buf oid; /**< The object identifier. */ |
| mbedtls_x509_buf val; /**< The named value. */ |
| } |
| hardware_module_name; |
| } |
| value; |
| } |
| mbedtls_x509_san_other_name; |
| |
| /** |
| * A structure for holding the parsed Subject Alternative Name, |
| * according to type. |
| * |
| * Future versions of the library may add new fields to this structure or |
| * to its embedded union and structure. |
| */ |
| typedef struct mbedtls_x509_subject_alternative_name |
| { |
| int type; /**< The SAN type, value of MBEDTLS_X509_SAN_XXX. */ |
| union { |
| mbedtls_x509_san_other_name other_name; /**< The otherName supported type. */ |
| mbedtls_x509_buf unstructured_name; /**< The buffer for the un constructed types. Only dnsName currently supported */ |
| } |
| san; /**< A union of the supported SAN types */ |
| } |
| mbedtls_x509_subject_alternative_name; |
| |
| /** |
| * 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 signatures */ |
| 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 32 |
| #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); |
| mbedtls_mpi MBEDTLS_PRIVATE(serial); |
| 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; |
| |
| /** |
| * 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. |
| * |
| * \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. |
| * |
| * \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. |
| * |
| * \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 liftetime 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. |
| * |
| * \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. |
| * |
| * \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 */ |
| /** |
| * \brief This function parses an item in the SubjectAlternativeNames |
| * extension. |
| * |
| * \param san_buf The buffer holding the raw data item of the subject |
| * alternative name. |
| * \param san The target structure to populate with the parsed presentation |
| * of the subject alternative name encoded in \p san_raw. |
| * |
| * \note Only "dnsName" and "otherName" of type hardware_module_name |
| * as defined in RFC 4180 is supported. |
| * |
| * \note This function should be called on a single raw data of |
| * subject alternative name. For example, after successful |
| * certificate parsing, one must iterate on every item in the |
| * \p crt->subject_alt_names sequence, and pass it to |
| * this function. |
| * |
| * \warning The target structure contains pointers to the raw data of the |
| * parsed certificate, and its lifetime is restricted by the |
| * lifetime of the certificate. |
| * |
| * \return \c 0 on success |
| * \return #MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE for an unsupported |
| * SAN type. |
| * \return Another negative value for any other failure. |
| */ |
| int mbedtls_x509_parse_subject_alt_name( const mbedtls_x509_buf *san_buf, |
| mbedtls_x509_subject_alternative_name *san ); |
| |
| #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. Currently only DNS names are supported. 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 */ |
| |
| /** \} 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 verion 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 ); |
| |
| /** |
| * \brief Set the serial number for a Certificate. |
| * |
| * \param ctx CRT context to use |
| * \param serial serial number to set |
| * |
| * \return 0 if successful |
| */ |
| int mbedtls_x509write_crt_set_serial( mbedtls_x509write_cert *ctx, const mbedtls_mpi *serial ); |
| |
| /** |
| * \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 |
| * inlimited) |
| * |
| * \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_SHA1_C) |
| /** |
| * \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_SHA1_C */ |
| |
| /** |
| * \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 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 */ |