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Correction to the migr. guide wording and removal of not needed option

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Signed-off-by: TRodziewicz <tomasz.rodziewicz@mobica.com>
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TRodziewicz 2021-06-09 13:24:48 +02:00
parent b8367380b1
commit 0ea2576502
1 changed files with 9 additions and 5 deletions
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docs/3.0-migration-guide.d/remove_MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION.md
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@ -1,9 +1,13 @@
Remove the X509 parser sensitivity control for an unknown critical extension from config.h Remove the config option MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
------------------------------------------------------------------------------------------ --------------------------------------------------------------------------
It affects users who use the `MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION` This change does not affect users of the default configuration; it only affect
option which if set, allowed the X509 parser to parse an X509 certificate users who enable this option.
even when it encountered an unknown critical extension.
The X.509 standard says that implementations must reject critical extensions that
they don't recognize, and this is what Mbed TLS does by default. This option
allowed to continue parsing those certificates but didn't provide a convenient
way to handle those extensions.
The migration path from that option is to use the The migration path from that option is to use the
`mbedtls_x509_crt_parse_der_with_ext_cb()` function which is functionally `mbedtls_x509_crt_parse_der_with_ext_cb()` function which is functionally