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polarssl/docs/3.0-migration-guide.d/ccm-alt.md
Ronald Cron f668bd18df Add migration guide for developers of CCM alternative implementation 
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2021-06-01 09:07:46 +02:00

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CCM interface changes: impact for alternative implementations

The CCM interface has changed with the addition of support for multi-part operations. Five new API functions have been defined: mbedtls_ccm_starts(), mbedtls_ccm_set_lengths(), mbedtls_ccm_update_ad(), mbedtls_ccm_update() and mbedtls_ccm_finish(). Alternative implementations of CCM (MBEDTLS_CCM_ALT) have now to implement those additional five API functions.