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| Copyright 2019 NXP |
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| .. _opc-ua-open62541: |
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| Introduction on Open62541 (OPC UA stack) |
| ======================================== |
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| Open62541 is an open source C implementation of OPC UA stack. Open62541 supports binary encoding of messages with the following security profiles and modes. |
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| Security Profiles |
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| 1) None |
| #) Basic256 |
| #) Basic256SHA256 |
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| Security Modes |
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| 1) None |
| #) Sign |
| #) Sign and Encrypt |
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| Integrating SE050 in Open62541 |
| ------------------------------------------------------------- |
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| Open62541 stack uses mbedtls for all crypto operations in security profile plugins by default. |
| For integrating with SE050, in the security profile plugins of Open62541 (``simw-top\ext\open62541\plugins\securityPolicies``), |
| specific mbedtls functions used for private key operations, are replaced by calls to SSS APIs. |
| Only the ``Basic256SHA256`` security profile (uses RSA2048 keys) has been updated to support SE050 integration: |
| private key operations - RSA Sign and RSA Decrypt - are now performed using SE050. |
| The modified security profile plugin files are placed at ``simw-top\sss\plugin\open62541``. |
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| For the server application, a reference key file is used to pass the key id information to the security profile plugins layer. |
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| .. note:: |
| Please refer to the demonstrator built on top of the Open62541 OPC UA stack for further details (:ref:`opc-ua-open62541-demo`) |
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