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negotiate_cipher

phantom_protocol::crypto::adaptive_crypto

Function negotiate_cipher 

Source 
pub fn negotiate_cipher(
    client_preferred: &[CipherSuite],
    server_caps: &HwCaps,
) -> Result<CipherSuite, CoreError>
Expand description

Negotiate best cipher suite between client and server.

Returns Err(CoreError::CipherSuiteUnavailable) under --features fips when the client does not offer a FIPS-approved suite (today: Aes256Gcm). On non-fips builds this never fails; the return type is Result so the API shape is feature-stable.