blob: 674f9ce7938775848f20ab5e707d4ce18a3590f3 [file] [log] [blame]
/**
* \file x509_csr.h
*
* \brief X.509 certificate signing request 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_CSR_H
#define MBEDTLS_X509_CSR_H
#include "mbedtls/private_access.h"
#include "mbedtls/build_info.h"
#include "mbedtls/x509.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* \addtogroup x509_module
* \{ */
/**
* \name Structures and functions for X.509 Certificate Signing Requests (CSR)
* \{
*/
/**
* Certificate Signing Request (CSR) structure.
*/
typedef struct mbedtls_x509_csr
{
mbedtls_x509_buf MBEDTLS_PRIVATE(raw); /**< The raw CSR data (DER). */
mbedtls_x509_buf MBEDTLS_PRIVATE(cri); /**< The raw CertificateRequestInfo body (DER). */
int MBEDTLS_PRIVATE(version); /**< CSR version (1=v1). */
mbedtls_x509_buf MBEDTLS_PRIVATE(subject_raw); /**< The raw subject data (DER). */
mbedtls_x509_name MBEDTLS_PRIVATE(subject); /**< The parsed subject data (named information object). */
mbedtls_pk_context MBEDTLS_PRIVATE(pk); /**< Container for the public key context. */
mbedtls_x509_buf MBEDTLS_PRIVATE(sig_oid);
mbedtls_x509_buf MBEDTLS_PRIVATE(sig);
mbedtls_md_type_t MBEDTLS_PRIVATE(sig_md); /**< Internal representation of the MD algorithm of the signature algorithm, e.g. MBEDTLS_MD_SHA256 */
mbedtls_pk_type_t MBEDTLS_PRIVATE(sig_pk); /**< Internal representation of the Public Key algorithm of the signature algorithm, e.g. MBEDTLS_PK_RSA */
void *MBEDTLS_PRIVATE(sig_opts); /**< Signature options to be passed to mbedtls_pk_verify_ext(), e.g. for RSASSA-PSS */
}
mbedtls_x509_csr;
/**
* Container for writing a CSR
*/
typedef struct mbedtls_x509write_csr
{
mbedtls_pk_context *MBEDTLS_PRIVATE(key);
mbedtls_asn1_named_data *MBEDTLS_PRIVATE(subject);
mbedtls_md_type_t MBEDTLS_PRIVATE(md_alg);
mbedtls_asn1_named_data *MBEDTLS_PRIVATE(extensions);
}
mbedtls_x509write_csr;
#if defined(MBEDTLS_X509_CSR_PARSE_C)
/**
* \brief Load a Certificate Signing Request (CSR) in DER format
*
* \note CSR attributes (if any) are currently silently ignored.
*
* \param csr CSR context to fill
* \param buf buffer holding the CRL data
* \param buflen size of the buffer
*
* \return 0 if successful, or a specific X509 error code
*/
int mbedtls_x509_csr_parse_der( mbedtls_x509_csr *csr,
const unsigned char *buf, size_t buflen );
/**
* \brief Load a Certificate Signing Request (CSR), DER or PEM format
*
* \note See notes for \c mbedtls_x509_csr_parse_der()
*
* \param csr CSR context to fill
* \param buf buffer holding the CRL data
* \param buflen size of the buffer
* (including the terminating null byte for PEM data)
*
* \return 0 if successful, or a specific X509 or PEM error code
*/
int mbedtls_x509_csr_parse( mbedtls_x509_csr *csr, const unsigned char *buf, size_t buflen );
#if defined(MBEDTLS_FS_IO)
/**
* \brief Load a Certificate Signing Request (CSR)
*
* \note See notes for \c mbedtls_x509_csr_parse()
*
* \param csr CSR context to fill
* \param path filename to read the CSR from
*
* \return 0 if successful, or a specific X509 or PEM error code
*/
int mbedtls_x509_csr_parse_file( mbedtls_x509_csr *csr, const char *path );
#endif /* MBEDTLS_FS_IO */
#if !defined(MBEDTLS_X509_REMOVE_INFO)
/**
* \brief Returns an informational string about the
* CSR.
*
* \param buf Buffer to write to
* \param size Maximum size of buffer
* \param prefix A line prefix
* \param csr The X509 CSR to represent
*
* \return The length of the string written (not including the
* terminated nul byte), or a negative error code.
*/
int mbedtls_x509_csr_info( char *buf, size_t size, const char *prefix,
const mbedtls_x509_csr *csr );
#endif /* !MBEDTLS_X509_REMOVE_INFO */
/**
* \brief Initialize a CSR
*
* \param csr CSR to initialize
*/
void mbedtls_x509_csr_init( mbedtls_x509_csr *csr );
/**
* \brief Unallocate all CSR data
*
* \param csr CSR to free
*/
void mbedtls_x509_csr_free( mbedtls_x509_csr *csr );
#endif /* MBEDTLS_X509_CSR_PARSE_C */
/* \} name */
/* \} addtogroup x509_module */
#if defined(MBEDTLS_X509_CSR_WRITE_C)
/**
* \brief Initialize a CSR context
*
* \param ctx CSR context to initialize
*/
void mbedtls_x509write_csr_init( mbedtls_x509write_csr *ctx );
/**
* \brief Set the subject name for a CSR
* 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 CSR 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_csr_set_subject_name( mbedtls_x509write_csr *ctx,
const char *subject_name );
/**
* \brief Set the key for a CSR (public key will be included,
* private key used to sign the CSR when writing it)
*
* \param ctx CSR context to use
* \param key Asymetric key to include
*/
void mbedtls_x509write_csr_set_key( mbedtls_x509write_csr *ctx, mbedtls_pk_context *key );
/**
* \brief Set the MD algorithm to use for the signature
* (e.g. MBEDTLS_MD_SHA1)
*
* \param ctx CSR context to use
* \param md_alg MD algorithm to use
*/
void mbedtls_x509write_csr_set_md_alg( mbedtls_x509write_csr *ctx, mbedtls_md_type_t md_alg );
/**
* \brief Set the Key Usage Extension flags
* (e.g. MBEDTLS_X509_KU_DIGITAL_SIGNATURE | MBEDTLS_X509_KU_KEY_CERT_SIGN)
*
* \param ctx CSR context to use
* \param key_usage key usage flags to set
*
* \return 0 if successful, or MBEDTLS_ERR_X509_ALLOC_FAILED
*
* \note The <code>decipherOnly</code> flag from the Key Usage
* extension is represented by bit 8 (i.e.
* <code>0x8000</code>), which cannot typically be represented
* in an unsigned char. Therefore, the flag
* <code>decipherOnly</code> (i.e.
* #MBEDTLS_X509_KU_DECIPHER_ONLY) cannot be set using this
* function.
*/
int mbedtls_x509write_csr_set_key_usage( mbedtls_x509write_csr *ctx, unsigned char 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 CSR 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_csr_set_ns_cert_type( mbedtls_x509write_csr *ctx,
unsigned char ns_cert_type );
/**
* \brief Generic function to add to or replace an extension in the
* CSR
*
* \param ctx CSR context to use
* \param oid OID of the extension
* \param oid_len length of the OID
* \param critical Set to 1 to mark the extension as critical, 0 otherwise.
* \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_csr_set_extension( mbedtls_x509write_csr *ctx,
const char *oid, size_t oid_len,
int critical,
const unsigned char *val, size_t val_len );
/**
* \brief Free the contents of a CSR context
*
* \param ctx CSR context to free
*/
void mbedtls_x509write_csr_free( mbedtls_x509write_csr *ctx );
/**
* \brief Write a CSR (Certificate Signing Request) to a
* 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 CSR 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_csr_der( mbedtls_x509write_csr *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 CSR (Certificate Signing Request) to a
* PEM string
*
* \param ctx CSR 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_csr_pem( mbedtls_x509write_csr *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_CSR_WRITE_C */
#ifdef __cplusplus
}
#endif
#endif /* mbedtls_x509_csr.h */