Hi Mbed TLS users,

We’re pleased to announce a major milestone: the joint release of Mbed TLS 4.0.0 and the first-ever TF-PSA-Crypto 1.0.0.

Mbed TLS now uses PSA Crypto as the default cryptographic API, and these releases include significant API changes that break backward compatibility with previous versions

These releases include significant API changes that break backward compatibility with previous versions, so please test your integration thoroughly and follow the migration guides to update your codebase: 

https://github.com/Mbed-TLS/mbedtls/blob/mbedtls-4.0.0/docs/4.0-migration-guide.md

https://github.com/Mbed-TLS/TF-PSA-Crypto/blob/v1.0.0/docs/1.0-migration-guide.md

Full details are available in the release notes:

https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-4.0.0 

https://github.com/Mbed-TLS/TF-PSA-Crypto/releases/tag/tf-psa-crypto-1.0.0.