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5 result(s) for Nonces
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OPC-10000-4 – OPC Unified Architecture - Part 4: Services5.7.2.1 DescriptionSecurityPolicy and the SecurityMode of the SecureChannel, the exchange of ApplicationInstanceCertificates and Nonces may be optional and the signatures may be empty. See OPC 10000-7 for the definition
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OPC-10000-6 – OPC Unified Architecture - Part 6: Mappingsasymmetric key pairs used for EphemeralKey s. SecureChannelNonceLength The length, in bytes, of the Nonces used when opening a SecureChannel . InitializationVectorLength The length, in bits, of the data used ... higher priority than any Certificate it issues. The SecureChannelNonceLength specifies the length of the Nonces exchanged when establishing a SecureChannel (see 6.7.4 ). SecureChannelEnhancements specifies whether a set of security enhancements
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OPC-10000-6 – OPC Unified Architecture - Part 6: Mappingsencrypted if the SecurityMode is not None (even if the SecurityMode is Sign). The Nonces shall be cryptographic random numbers with a length specified by the SecureChannelNonceLength of the SecurityPolicy ... OpenSecureChannel Messages are not signed or encrypted if the SecurityMode is None . The Nonces are ignored and should be set to null. The SecureChannelId and the TokenId are still assigned
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OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings6.7.6 Deriving keysSecureChannel is established the Messages are signed and encrypted with keys derived from the Nonces exchanged in the OpenSecureChannel call. These keys are derived by passing the Nonces ... random function requires a secret and a seed. These values are derived from the Nonces exchanged in the OpenSecureChannel request and response. Table 65 specifies how to derive the secrets
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OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings7.4.1 OverviewSecurityPolicy shall be specified, however, it only affects the algorithms used for signing the Nonces during the CreateSession / ActivateSession handshake. A SecurityPolicy of None indicates that the Nonces