EC2 > Structures > Phase1IntegrityAlgorithmsRequestListValue Phase1IntegrityAlgorithmsRequestListValue¶ Structure Class¶ Phase1IntegrityAlgorithmsRequestListValue dataclass ¶ Bases: _SerdeShape Specifies the integrity algorithm for the VPN tunnel for phase 1 IKE negotiations. Attributes¶ value class-attribute instance-attribute ¶ value: str | None = ... The value for the integrity algorithm.