something wrong with Functions based on SM2 about ipp-crypto HOT 7 CLOSED

It seems the only situation where ippsGFpECESGetSize_SM2() returns the ippStsNotSupportedModeErr status is incorrect initialization of the Elliptic Curve (or underlying finite field). If you send a short example illustrating this problem, it helps to understand the source of issue and fix it.
By the way, the SM2 curve has fixed P, A, B, X, Y and N parameters, Are you sure your values (above) are corresponds to SM2 EC?

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@skirillo

example.zip

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In your example I did not find the following:
'ipp_print_BN' undefined; assuming extern returning int
'ipp_getBN_pint' undefined; assuming extern returning int
'get_time_seed' undefined; assuming extern returning int
'ipp_ramdom_init' undefined; assuming extern returning int
'ipp_random_BN_get' undefined; assuming extern returning int
'ipp_mod_BN' undefined; assuming extern returning int
'ipp_delete_BN' undefined; assuming extern returning int
'ipp_random_release' undefined; assuming extern returning int
Could you prepare compete example?

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example.zip
@skirillo

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You sample is not complete. Undefined ipp_extget_BN function.

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when EC created the underlying field is not copied into EC state but instead saved the pointer to GF state only.
In the ipp_ecc_ende_sm2Gen() GF state created correctly but DESTROYED before return.
The ipp_ecc_ende_sm2init() require correct content of EC state including reference to GF state. But it destroyed ..
It's the reason why ippsGFpECESGetSize_SM2() returns error status.

I recommend to take a look at SM2 encryption/decryption protocol

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i get it,thank u very much!

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