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5 result(s) for Symmetric

• OPC-10000-2 – OPC Unified Architecture - Part 2: Security Model
  4.5.3.2 Broker-less
  broker-less PubSub communication model provides Confidentiality and Integrity. This is accomplished using Symmetric Encryption and signature algorithms. The required SymmetricKeys are distributed by a Security Key Server ... decode the message. For example, a system could be composed of a shared symmetric group that is composed of a controller ( Publisher ) and three Subscribers (say HMI's). The controller
• OPC-10000-2 – OPC Unified Architecture - Part 2: Security Model
  5.2.5 Confidentiality
  Confidentiality OPC UA uses Symmetric and Asymmetric Encryption to protect Confidentiality as a security objective . Thereby Asymmetric Encryption is used for key agreement and Symmetric Encryption for securing all other ... Infrastructure ) to manage keys used for Asymmetric Encryption which is then used to establish symmetric session keys. The length of the certificate chain is defined by the site CSMS (only
• OPC-10000-2 – OPC Unified Architecture - Part 2: Security Model
  5.2.6 Integrity
  Integrity OPC UA uses Symmetric and Asymmetric Signatures to address Integrity as a security objective. The Asymmetric Signatures are used in the key agreement phase during the SecureChannel establishment ... Symmetric Signatures are applied to all other Message s including PubSub messages. OPC UA relies upon the site CSMS to protect Integrity on the network and system infrastructure
• OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model
  5.3.2 Attributes
  example to specify some general semantics or constraints that its subtypes inherit. The Symmetric Attribute is used to indicate whether or not the meaning of the ReferenceType is the same ... both the SourceNode and TargetNode . If a ReferenceType is symmetric, the InverseName Attribute shall be omitted. Examples of symmetric ReferenceTypes are "Connects To" and "Communicates With
• OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model
  B.3.2 ReferenceType
  Figure B.5 and predefined ReferenceTypes in Figure B.6 . Figure B.5 - Reference and ReferenceType If Symmetric is "false" an InverseName shall be provided. Figure B.6 - Predefined ReferenceTypes