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3 result(s) for DerivedSignatureKeyLength

• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  6.1 Security Handshake and Security Policies
  length, in bits, for an asymmetric key. KeyDerivationAlgorithm The key derivation algorithm to use. DerivedSignatureKeyLength The length in bits of the derived key used for Message authentication. CertificateSignatureAlgorithm The asymmetric ... SymmetricEncryptionAlgorithm . The length of the keys used for creating Signatures is specified by the DerivedSignatureKeyLength . The MinAsymmetricKeyLength and MaxAsymmetricKeyLength are constraints that apply to all Certificates (including Issuers
• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  6.7.6 Deriving keys
  channel. The following information is specified by the SecurityPolicy : SigningKeyLength (from the DerivedSignatureKeyLength ); EncryptingKeyLength (implied by the SymmetricEncryptionAlgorithm ); InitializationVectorLength (from by the InitializationVectorLength ); The pseudo random function requires a secret ... Cryptography key generation parameters Name Secret Seed Offset Length ClientSigningKey ServerSecret ClientSeed 0 DerivedSignatureKeyLength ClientEncryptingKey ServerSecret ClientSeed DerivedSignatureKeyLength EncryptionKeyLength ClientInitializationVector ServerSecret ClientSeed DerivedSignatureKeyLength + EncryptionKeyLength InitializationVectorLength ServerSigningKey ClientSecret ServerSeed 0 DerivedSignatureKeyLength
• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  6.8.1 Secure Channel Handshake
  Info= ClientSalt as shown in Table 67 . The SymmetricEncryptionAlgorithm for the SecurityPolicy sets the DerivedSignatureKeyLength , the EncryptionKeyLength and InitializationVectorLength . All constants referenced in the table are converted to bytes ... lengths. Table 67 - Deriving Client Keys from Keying Material Name Offset Length ClientSigningKey 0 DerivedSignatureKeyLength ClientEncryptingKey DerivedSignatureKeyLength EncryptionKeyLength ClientInitializationVector DerivedSignatureKeyLength + EncryptionKeyLength InitializationVectorLength The server keys are extracted from the keying