Aloaha Sign is a validation utility for digital file signatures. If you need to digitally sign any document, and check its validity later, this is the program you should use.Aloaha Sign can work with any digital format, including CER add-on certifications. To verify a document (and approve or reject it) you can work on-line, off line or via the OCSP method. And, if you want to integrate this tool with your software programs, you+ll also find here a library or component to let you do it.