/**
 * \file doc_x509.h
 *
 * \brief X.509 module documentation file.
 */
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/**
 * @addtogroup x509_module X.509 module
 *
 * The X.509 module provides X.509 support for reading, writing and verification
 * of certificates.
 * In summary:
 *   - X.509 certificate (CRT) reading (see \c mbedtls_x509_crt_parse(),
 *     \c mbedtls_x509_crt_parse_der(), \c mbedtls_x509_crt_parse_file()).
 *   - X.509 certificate revocation list (CRL) reading (see
 *     \c mbedtls_x509_crl_parse(), \c mbedtls_x509_crl_parse_der(),
 *     and \c mbedtls_x509_crl_parse_file()).
 *   - X.509 certificate signature verification (see \c
 *     mbedtls_x509_crt_verify() and \c mbedtls_x509_crt_verify_with_profile().
 *   - X.509 certificate writing and certificate request writing (see
 *     \c mbedtls_x509write_crt_der() and \c mbedtls_x509write_csr_der()).
 *
 * This module can be used to build a certificate authority (CA) chain and
 * verify its signature. It is also used to generate Certificate Signing
 * Requests and X.509 certificates just as a CA would do.
 */