syedelec opened a new issue, #88:
URL: https://github.com/apache/incubator-teaclave-trustzone-sdk/issues/88

   Hello
   
   I noticed that the ECDH shared secret derivation is not supported 
[`TEE_ALG_ECDH_DERIVE_SHARED_SECRET 0x80000042`] 
   
   Right now only the `TEE_ALG_DH_DERIVE_SHARED_SECRET` is supported
   
https://github.com/apache/incubator-teaclave-trustzone-sdk/blob/master/optee-utee/src/crypto_op.rs#L1548-L1549
   
   Same for `TEE_ALG_ECDSA_SHAXXX`
   
   In the [TEE Internal GlobalPlatform 
API](https://globalplatform.org/wp-content/uploads/2018/06/GPD_TEE_Internal_Core_API_Specification_v1.1.2.50_PublicReview.pdf),
 it's specified `if supported`, is it related to the reason these are not 
supported?
   
![image](https://user-images.githubusercontent.com/9877335/188903293-e8daed83-aea6-477e-aad7-c4b9d8577db0.png)
   
   
   My questions are:
   What would be the approximate effort to implement these algorithms in the 
Rust SDK? 
   Do you plan on supporting these algorithms?
   
   Thanks for your inputs


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