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Addition of the migration guide

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Signed-off-by: TRodziewicz <tomasz.rodziewicz@mobica.com>
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TRodziewicz 2021-05-12 11:03:42 +02:00
parent 3ecb92e680
commit b8367380b1
2 changed files with 14 additions and 1 deletions
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ChangeLog.d/issue4378.txt
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Removals
* Remove the MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION config.h
option. The mbedtls_x509_crt_parse_der_with_ext_cb() is the way to go for
for migration path. Fixes #4378.
migration path. Fixes #4378.

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docs/3.0-migration-guide.d/remove_MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION.md Normal file
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Remove the X509 parser sensitivity control for an unknown critical extension from config.h
------------------------------------------------------------------------------------------
It affects users who use the `MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION`
option which if set, allowed the X509 parser to parse an X509 certificate
even when it encountered an unknown critical extension.
The migration path from that option is to use the
`mbedtls_x509_crt_parse_der_with_ext_cb()` function which is functionally
equivalent to `mbedtls_x509_crt_parse_der()`, and/or
`mbedtls_x509_crt_parse_der_nocopy()` but it calls the callback with every
unsupported certificate extension and additionally the "certificate policies"
extension if it contains any unsupported certificate policies.