Update doc of return value of verify()
@@ -295,12 +295,13 @@ int mbedtls_x509_crt_verify_info( char *buf, size_t size, const char *prefix,
* \param f_vrfy verification function
* \param p_vrfy verification parameter
*
- * \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 0 (and flags set to 0) if the chain was verified and valid,
+ * MBEDTLS_ERR_X509_CERT_VERIFY_FAILED if the chain was verified
+ * but found to be invalid, in which case *flags will have one
+ * or more MBEDTLS_X509_BADCERT_XXX or MBEDTLS_X509_BADCRL_XXX
+ * flags set, or another error (and flags set to 0xffffffff)
+ * 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,
