miniproto.auth.key_exchange.compute_auth_key

miniproto.auth.key_exchange.compute_auth_key

compute_auth_key(*, g_a: int, b: int, dh_prime: int) -> bytes

Compute the 256-byte MTProto key from validated DH peer and private values.

Parameters:

• g_a (int) – Server DH public value as an integer.
• b (int) – Positive client DH private exponent.
• dh_prime (int) – DH modulus used for modular exponentiation.

Raises:

• ValueError – If the peer public value or private exponent is out of range.