security - Key Exchange between SQL Servers -

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i have implement "secure communication" between 2 microsoft sql servers. "communication" in case asynchronous high-latency operation , have work least possible amount of round trips. there no shared secret available between 2 servers, , no secure channel. communication equipment not support secure transmission.

(i know under these circumstances can't prevent against active mitm attacks, that's above paygrade, want else right.)

sql server allows builtin aes256 encryption/decryption want use, have make key exchange beforehand.

i thought use builtin dhke, since better not implement security-related myself. has sql server builtin dhke functions, or can setup sql server reliably support dhke? there other option should for?


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