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Zeroize internal buffers and variables in MD hashes

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Zeroising of local buffers and variables which are used for calculations in
mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
functions to erase sensitive data from memory.
Checked all function for possible missing zeroisation in MD.

Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
This commit is contained in:
gabor-mezei-arm 2020-08-19 14:03:06 +02:00
parent 5feba8dae1
commit f21639fc2f
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GPG key ID: 106F5A41ECC305BD
5 changed files with 32 additions and 1 deletions
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ChangeLog.d/zeroizations_of_sensitive_data_in_PKCS5_and_SHA.txt
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@ -1,5 +1,6 @@
Security
* Zeroising of local buffers and variables which are used for calculations
in mbedtls_pkcs5_pbkdf2_hmac() and mbedtls_internal_sha*_process()
in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
functions to erase sensitive data from memory. Reported by
Johan Malmgren and Johan Uppman Bruce from Sectra.