3803572 - JWT authentication fails with enp_rsaDecrypt error 0xa0100220 when token size increases; login error 16141 - SAP ASE

• Authentication using JWT fails when additional fields are added to the token payload; login via isql is unsuccessful.
• ASE error log shows: enp_rsaDecrypt: CCLDecryptionCtx_decrypt failed with error: 0xa0100220.
• Login failure error code: 16141.
  
  (Error message sample)
  
  00:0005:00000:00890:2026/09/02 07:52:12.31 kernel  enp_rsaDecrypt: CCLDecryptionCtx_decrypt failed with error: 0xa0100220.
  00:0005:00000:00890:2026/09/02 07:52:12.31 Logon  Login failed : User sybase, Client IP address: '<masked>', Appname: isql, Progname: CT-Library, Progversion: 16.1.0.1, TdsVersion:5.0.0.0, Error: 16141
  
  

• SAP Adaptive Server Enterprise (ASE) 16.1 SP00 PL01
• JWT-based authentication

JWT, token length, size limit, 1252, enp_rsaDecrypt, 0xa0100220, 16141, login failed, isql, CT-Library, ASE, CCLDecryptionCtx_decrypt, JWT authentication, payload size, Adaptive Server Enterprise, JSON Web Token, CR 832540 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , BC-SYB-SDK , SDK , Problem