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Add support for using a different MGF1 hash with RSA-OAEP #6779

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Add support for using a different MGF1 hash with RSA-OAEP #6779

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Commits on May 23, 2024

  1. core: pass TEE_ATTR_RSA_OAEP_MGF_HASH to RSA-OAEP implementations 

    OP-TEE currently doesn't support using a different hash for MGF1
with RSA-OAEP. However, this is required for AOSP compatibility
(e.g. in EncryptionOperationsTest.RsaOaepWithMGFDigestSuccess [1]).

Pass the MGF1 attribute to crypto implementations. Note that
only libtomcrypt supports this feature at the moment, so other
implementations will either fail or fall back to libtomcrypt when
passed a different MGF1 hash.

Link: https://android.googlesource.com/platform/hardware/interfaces/+/refs/heads/main/security/keymint/aidl/vts/functional/KeyMintTest.cpp#5552 [1]
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
    @samitolvanen
    samitolvanen committed May 23, 2024
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