How To Fix SALV_X_API161 - Hash algorithm &1 is not supported for DSA signing

SAP Error Message - Details

• Message type: E = Error

• Message class: SALV_X_API - Messages for ALV API exceptions

• Message number: 161

• Message text: Hash algorithm &1 is not supported for DSA signing

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SALV_X_API161 - Hash algorithm &1 is not supported for DSA signing ?

  The SAP error message SALV_X_API161 indicates that the hash algorithm specified for Digital Signature Algorithm (DSA) signing is not supported. This error typically arises when there is an attempt to use a hash algorithm that is either deprecated or not recognized by the system.
  Cause:
  
  Unsupported Hash Algorithm: The hash algorithm specified in the configuration or during the signing process is not supported by the SAP system. Common hash algorithms include SHA-1, SHA-256, etc. If an unsupported algorithm is specified, this error will occur.
  Configuration Issues: The system may not be properly configured to support certain cryptographic algorithms, or the necessary libraries may not be installed or updated.
  Outdated Software: The version of SAP or the underlying libraries may be outdated and not support newer hash algorithms.
  
  Solution:
  
  Check Hash Algorithm: Verify the hash algorithm being used in your DSA signing process. Ensure that it is one of the supported algorithms. Commonly supported algorithms include SHA-256.
  Update Configuration: If you are using a custom configuration, update it to use a supported hash algorithm. This may involve changing settings in your SAP system or in the application that is performing the signing.
  Upgrade SAP System: If your SAP system is outdated, consider upgrading to a newer version that supports the desired hash algorithms.
  Check Cryptographic Libraries: Ensure that the necessary cryptographic libraries are installed and up to date. This may involve checking the SAP Cryptographic Library (SAPCRYPTOLIB) or other relevant libraries.
  Consult Documentation: Refer to the SAP documentation for the specific version you are using to find the list of supported hash algorithms and any additional configuration steps that may be required.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on supported hash algorithms.
  Security Guidelines: Review SAP's security guidelines for cryptographic operations to ensure compliance with best practices.
  Community Forums: Consider searching or posting in SAP community forums for additional insights from other users who may have encountered the same issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.