How To Fix TRUST132 - RSA with SHA-1

SAP Error Message - Details

• Message type: E = Error

• Message class: TRUST - Certificate Management

• Message number: 132

• Message text: RSA with SHA-1

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TRUST132 - RSA with SHA-1 ?

  The SAP error message TRUST132 typically indicates an issue related to the use of the RSA algorithm with SHA-1 for digital signatures or certificates. This error often arises due to security concerns, as SHA-1 is considered weak and vulnerable to collision attacks. As a result, many systems and applications, including SAP, are moving away from SHA-1 in favor of more secure hashing algorithms like SHA-256.
  Cause:
  
  Use of SHA-1: The error occurs when a digital signature or certificate is using SHA-1 as the hashing algorithm.
  Certificate Expiration: The certificate may have expired or is not trusted.
  Configuration Issues: The system may not be configured to accept certificates that use SHA-1.
  
  Solution:
  
  
  Update Certificates: Replace any certificates that use SHA-1 with those that use SHA-256 or a stronger hashing algorithm. This may involve:
  
  Generating new key pairs and certificates.
  Ensuring that all relevant systems and applications are updated to trust the new certificates.
  
  
  
  Update Trust Configuration: Ensure that the trust configuration in SAP is set to accept certificates with stronger algorithms. This may involve:
  
  Accessing the transaction code STRUST in SAP.
  Checking the SSL server and client SSL configurations.
  Importing the new certificates into the SAP trust store.
  
  
  
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as these may include improvements in security and support for newer algorithms.
  
  
  Review Security Policies: Review your organization's security policies to ensure compliance with current best practices regarding cryptographic algorithms.
  
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that address the TRUST132 error. SAP frequently publishes notes that provide guidance on resolving specific issues.
  Documentation: Refer to SAP documentation regarding digital signatures, certificates, and cryptographic algorithms for more detailed instructions on managing trust relationships.
  Security Best Practices: Familiarize yourself with security best practices regarding the use of cryptographic algorithms to ensure that your systems remain secure.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.