SAP Sybase IQ 15.0 or later use SHA256 to hash passwords. Passwords are stored in UTF-8.
When passwords are created or changed, they are converted to UTF-8 before being hashed and stored in the database. If the database is unloaded and reloaded into a database with a different character set, existing passwords continue to work. If the server cannot convert from the client's character set to UTF-8, then it is recommended that the password be composed of 7-bit ASCII characters as other characters may not work correctly.
SAP Sybase IQ 12.7 and earlier used a proprietary hash.