How To Fix TRUST131 - RSA with MD5

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 131

• Message text: RSA with MD5

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message TRUST131 - RSA with MD5 ?

  The SAP error message TRUST131 typically indicates an issue related to the use of the MD5 hashing algorithm in the context of digital signatures or certificates. This error often arises when the system encounters a security concern regarding the use of MD5, which is considered weak and vulnerable to collision attacks.
  Cause:
  
  Weak Hash Algorithm: The error is triggered because the system is configured to reject the use of the MD5 hashing algorithm due to its known vulnerabilities.
  Certificate Issues: The error may also occur if a digital certificate is signed using MD5, which is not compliant with current security standards.
  Configuration Settings: The SAP system may have specific settings that enforce stronger cryptographic standards, leading to the rejection of MD5.
  
  Solution:
  
  Update Certificates: If the error is related to a digital certificate, you should replace any certificates that are signed with MD5 with those signed using a stronger algorithm, such as SHA-256.
  Check Configuration: Review the configuration settings in your SAP system related to cryptographic algorithms. Ensure that the system is set to accept only secure algorithms.
  Upgrade SAP System: If you are using an older version of SAP, consider upgrading to a more recent version that has better support for modern cryptographic standards.
  Consult Documentation: Refer to SAP's official documentation or support notes for specific guidance on handling the TRUST131 error and recommended practices for cryptographic settings.
  
  Related Information:
  
  Security Best Practices: It is essential to follow security best practices when dealing with cryptographic algorithms. Avoid using deprecated algorithms like MD5 and SHA-1.
  SAP Notes: Check for relevant SAP Notes that may provide additional context or solutions for the TRUST131 error. SAP frequently updates its knowledge base with solutions for common issues.
  Testing: After making changes, ensure to test the system thoroughly to confirm that the error is resolved and that there are no new issues introduced.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.