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# ``twisted`.`conch`.`ssh`.`_kex`.`_IKexAlgorithm``

interface documentation

`class _IKexAlgorithm(Interface): (source)`

Known subclasses: `twisted.conch.ssh._kex._IEllipticCurveExchangeKexAlgorithm`, `twisted.conch.ssh._kex._IFixedGroupKexAlgorithm`, `twisted.conch.ssh._kex._IGroupExchangeKexAlgorithm`

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An `_IKexAlgorithm` describes a key exchange algorithm.

Attribute | `hashProcessor` | A callable hash algorithm constructor (e.g. `hashlib.sha256`) suitable for use with this key exchange algorithm.
Attribute | `preference` | An `int` giving the preference of the algorithm when negotiating key exchange. Algorithms with lower precedence values are more preferred.

hashProcessor: `_HashFactory` = (source)

A callable hash algorithm constructor (e.g. `hashlib.sha256`) suitable for use with this key exchange algorithm.

preference: `int` = (source)

An `int` giving the preference of the algorithm when negotiating key exchange. Algorithms with lower precedence values are more preferred.