Add change log and migration guide
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/ChangeLog.d/remove-enable-weak-ciphersuites.txt b/ChangeLog.d/remove-enable-weak-ciphersuites.txt
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+Removals
+ * Remove MBEDTLS_ENABLE_WEAK_CIPHERSUITES configuration option. Fixes #4416.
diff --git a/docs/3.0-migration-guide.d/remove-enable-weak-ciphersuites.md b/docs/3.0-migration-guide.d/remove-enable-weak-ciphersuites.md
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+Remove the configuration to enable weak ciphersuites in SSL / TLS
+-----------------------------------------------------------------
+
+This does not affect users who use the default `config.h`, as this option was
+already off by default.
+
+If you were using a weak cipher, please switch to any of the modern,
+recommended ciphersuites (based on AES-GCM, AES-CCM or ChachaPoly for example)
+and if your peer doesn't support any, encourage them to upgrade their software.
+
+If you were using a ciphersuite without encryption, you just have to
+enable MBEDTLS_CIPHER_NULL_CIPHER now.