opcua.crypto.security_policies.SecurityPolicyBasic256 Class Reference

Inheritance diagram for opcua.crypto.security_policies.SecurityPolicyBasic256:

Public Member Functions
def	__init__ (self, server_cert, client_cert, client_pk, mode)
def	make_symmetric_key (self, nonce1, nonce2)

Static Public Member Functions
def	encrypt_asymmetric (pubkey, data)

Public Attributes
	asymmetric_cryptography
	client_certificate
	Mode
	server_certificate
	symmetric_cryptography

Static Public Attributes
string	AsymmetricEncryptionURI = "http://www.w3.org/2001/04/xmlenc#rsa-oaep"
int	signature_key_size = 24
int	symmetric_key_size = 32
string	URI = "http://opcfoundation.org/UA/SecurityPolicy#Basic256"

Detailed Description

Security Basic 256
A suite of algorithms that are for 256-Bit (32 bytes) encryption,
algorithms include:
- SymmetricSignatureAlgorithm - HmacSha1
  (http://www.w3.org/2000/09/xmldsig#hmac-sha1)
- SymmetricEncryptionAlgorithm - Aes256
  (http://www.w3.org/2001/04/xmlenc#aes256-cbc)
- AsymmetricSignatureAlgorithm - RsaSha1
  (http://www.w3.org/2000/09/xmldsig#rsa-sha1)
- AsymmetricKeyWrapAlgorithm - KwRsaOaep
  (http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p)
- AsymmetricEncryptionAlgorithm - RsaOaep
  (http://www.w3.org/2001/04/xmlenc#rsa-oaep)
- KeyDerivationAlgorithm - PSha1
  (http://docs.oasis-open.org/ws-sx/ws-secureconversation/200512/dk/p_sha1)
- DerivedSignatureKeyLength - 192 (24 bytes)
- MinAsymmetricKeyLength - 1024 (128 bytes)
- MaxAsymmetricKeyLength - 2048 (256 bytes)
- CertificateSignatureAlgorithm - Sha1

If a certificate or any certificate in the chain is not signed with
a hash that is Sha1 or stronger then the certificate shall be rejected.

Definition at line 377 of file security_policies.py.

Constructor & Destructor Documentation

def opcua.crypto.security_policies.SecurityPolicyBasic256.__init__	(		self,
			server_cert,
			client_cert,
			client_pk,
			mode
	)

Definition at line 412 of file security_policies.py.

Member Function Documentation

def opcua.crypto.security_policies.SecurityPolicyBasic256.encrypt_asymmetric (   pubkey,   data  )

static

Definition at line 409 of file security_policies.py.

def opcua.crypto.security_policies.SecurityPolicyBasic256.make_symmetric_key	(		self,
			nonce1,
			nonce2
	)

Definition at line 431 of file security_policies.py.

Member Data Documentation

opcua.crypto.security_policies.SecurityPolicyBasic256.asymmetric_cryptography

Definition at line 418 of file security_policies.py.

string opcua.crypto.security_policies.SecurityPolicyBasic256.AsymmetricEncryptionURI = "http://www.w3.org/2001/04/xmlenc#rsa-oaep"

static

Definition at line 406 of file security_policies.py.

opcua.crypto.security_policies.SecurityPolicyBasic256.client_certificate

Definition at line 429 of file security_policies.py.

opcua.crypto.security_policies.SecurityPolicyBasic256.Mode

Definition at line 427 of file security_policies.py.

opcua.crypto.security_policies.SecurityPolicyBasic256.server_certificate

Definition at line 428 of file security_policies.py.

int opcua.crypto.security_policies.SecurityPolicyBasic256.signature_key_size = 24

static

Definition at line 404 of file security_policies.py.

opcua.crypto.security_policies.SecurityPolicyBasic256.symmetric_cryptography

Definition at line 426 of file security_policies.py.

int opcua.crypto.security_policies.SecurityPolicyBasic256.symmetric_key_size = 32

static

Definition at line 405 of file security_policies.py.

string opcua.crypto.security_policies.SecurityPolicyBasic256.URI = "http://opcfoundation.org/UA/SecurityPolicy#Basic256"

static

Definition at line 403 of file security_policies.py.

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The documentation for this class was generated from the following file:

• security_policies.py