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TLS ignores PRF return value when calculating verify_data #9843

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silabs-TuomasM opened this issue Dec 11, 2024 · 0 comments

silabs-TuomasM commented Dec 11, 2024

It seems the return value of tls_prf() is silently ignored in ssl_calc_finished_tls_generic():
https://github.com/Mbed-TLS/mbedtls/blob/development/library/ssl_tls.c#L8112

In my case this caused invalid verify_data to be sent, leading the peer to abort the handshake.

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