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mbedtls_x509_crt_parse() function
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.
Syntax
Implemented in ![]()
x509_crt.c:1139
Return value
\c 0 if all certificates were parsed successfully. The (positive) number of certificates that couldn't be parsed if parsing was partly successful (see above). A negative X509 or PEM error code otherwise.
Related Functions
Found 21 other functions taking a ![]()
mbedtls_x509_crt
argument:
Function
Description
Unallocate all certificate data
Initialize a certificate (chain)
Set the data required to verify peer certificate
Parse a single DER formatted certificate and add it to the chained list.
Set own certificate chain and private key
Restartable version of \c mbedtls_crt_verify_with_profile()
Returns an informational string about the certificate.
Verify the certificate signature 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.
Verify the certificate signature according to profile
Print a X.509 certificate structure to the debug output. This function is always used through the MBEDTLS_SSL_DEBUG_CRT() macro, which supplies the ssl context, file and line number parameters. \attention This function is intended for INTERNAL usage within the library only.
Examples
Code
Location
Data Use
from 0/6 examplesmbedtls_x509_crt_parse() reads 2 variables: