ee038521d3753473464064e3bb49abadb26d61696c2e7275
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MTProto 2.0 (AES-256-IGE + SHA-256) - MTProto 2.0 uses AES-256-IGE symmetric encryption combined with SHA-256 message authentication. Each session uses unique ephemeral keys negotiated via Diffie-Hellman, making it impossible to decrypt past traffic even if a session key is later compromised.