Unable to perform authentication due to error : java.io.IOException: Invalid DER: length field too big (186)
Problem: Error message "Unable to perform authentication due to error : java.io.IOException: Invalid DER: length field too big (186)" obtained while adding Oracle Cloud monitor.
Reason: This issue occurs if we use AES128 Encryption Standard to protect the RSA key pair (PEM file) with a passphrase as mentioned in Oracle Cloud documentation. Hence, it is difficult to read the private key from the PEM file due to encryption.
Solution:
Generating Private key:
As per the Oracle Cloud documentation:
openssl genrsa -out ~/.oci/oci_api_key.pem -aes128 2048Recommended way to generate private key file as per the solution in the Oracle Cloud Customer Connect forum:
openssl genrsa -out ~/.oci/oci_api_key.pem 2048Execute the above recommended command in the command line to obtain the private key.
Generating Public key:
Execute the below command in the command line to obtain the public key from the generated private key:
openssl rsa -pubout -in ~/.oci/oci_api_key.pem -out ~/.oci/oci_api_key_public.pem
After generating the Public key, upload the public key in Oracle Cloud console to obtain the Fingerprint.
Provide the PEM file path of the Private key, Fingerprint along with Tenancy OCID and User OCID as inputs and try adding the Oracle Cloud monitor in Applications Manager.
New to ADSelfService Plus?
Related Articles
Troubleshooting Authentication Failed error
Authentication Failure Authentication failure occurs when the request to a resource is missing or has invalid credentials. Check if URL requires authentication Access the URL in an incognito/private window and check if any pop up asking for ...Troubleshooting Bad Request and Internal Server error
When a server responds with a Bad Request (400) or Internal Server Error (500), It typically indicates issues with how the request is being made or processed. The reasons for these errors can vary, but the most common causes are Incorrectly formatted ...Monitor Addition Fails with ‘Invalid Username & Password’ Error Despite Providing Correct Credentials
If your build version is 177300 or above, but below 178400, there is a known issue that causes Monitor Addition Failure due to invalid username or password. To resolve this, on the remote WebLogic server Version 12, navigate to <Weblogic ...Getting 'Invalid WMI query' with error code 0x80041017 in Windows
"Invalid WMI query" with error code WBEM_E_INVALID_QUERY (0x80041017) found in log files or script execution when collecting Windows performance counter data. It is possible that the Win32_PerfRawData_PerfOS_Processor cannot be found or accessed on ...How to Resolve Java Application Crashes with Java Agent v6.7.0 due to 'VerifyError' Exception
Issue: Installing the APM Insight Java Agent v6.7.0 may cause application crashes or redirection to error pages, typically triggered by a 'java.lang.VerifyError' exception during startup. Steps to check: 1. Verify the Installed Java Agent Version: ...
