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x509: rework documentation for verify()

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- reduce redundancy between verify() and _with_profile() for readability and
  maintainability
- improve description of parameters
This commit is contained in:
Manuel Pégourié-Gonnard 2016-01-28 17:27:45 +01:00
parent b74b50b4b1
commit 95a3c6e6d1
1 changed files with 42 additions and 40 deletions
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82
include/mbedtls/x509_crt.h
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@ -251,41 +251,22 @@ int mbedtls_x509_crt_verify_info( char *buf, size_t size, const char *prefix,
/**
* \brief 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 but a fatal error.
*
* \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.
* default security profile, so see that function for details.
*
* \param crt a certificate to be verified
* \param trust_ca the trusted CA chain
* \param ca_crl the CRL chain for trusted CA's
* \param exp_name expected Common Name (can be set to
* NULL if the CN must not be verified)
* \param crt a certificate (chain) to be verified
* Must start with the end entity certificate, then
* intermediate CA certificates if any.
* \param trust_ca the list of trusted root CAs
* \param ca_crl the list of CRLs for trusted CAs
* \param exp_name expected name to be checked against the subjectAltName
* extension if present, or the Common Name of the Subject.
* Usually a DNS name; see note below for other name types.
* \param flags result of the verification
* \param f_vrfy verification function
* \param p_vrfy verification parameter
* \param f_vrfy verification callback
* \param p_vrfy context for the verification callback
*
* \return 0 if successful or MBEDTLS_ERR_X509_CERT_VERIFY_FAILED
* in which case *flags will have one or more
* MBEDTLS_X509_BADCERT_XXX or MBEDTLS_X509_BADCRL_XXX flags
* set,
* or another error in case of a fatal error encountered
* during the verification process.
* \return see \c mbedtls_x509_crt_verify_with_profile()
*/
int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt,
mbedtls_x509_crt *trust_ca,
@ -300,19 +281,40 @@ int mbedtls_x509_crt_verify( mbedtls_x509_crt *crt,
* \note Same as \c mbedtls_x509_crt_verify(), but with explicit
* security profile.
*
* \note In case verification failed, the results can be displayed
* using \c mbedtls_x509_crt_verify_info()
*
* \note 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 *context, 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 but
* a fatal error.
*
* \param crt a certificate (chain) to be verified
* Must start with the end entity certificate, then
* intermediate CA certificates if any.
* \param trust_ca the list of trusted root CAs
* \param ca_crl the list of CRLs for trusted CAs
* \param profile security profile for verification, see note below
* \param exp_name expected name to be checked against the subjectAltName
* extension if present, or the Common Name of the Subject.
* Usually a DNS name; see note below for other name types.
* \param flags result of the verification
* \param f_vrfy verification callback
* \param p_vrfy context for the verification callback
*
* \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 a certificate to be verified
* \param trust_ca the trusted CA chain
* \param ca_crl the CRL chain for trusted CA's
* \param profile security profile for verification
* \param exp_name expected Common Name (can be set to
* NULL if the CN must not be verified)
* \param flags result of the verification
* \param f_vrfy verification function
* \param p_vrfy verification parameter
* \note TODO: IP addresses in exp_name
*
* \return 0 if successful or MBEDTLS_ERR_X509_CERT_VERIFY_FAILED
* in which case *flags will have one or more