GBCrypt use AES 256-bit encryption combine Blowfish, data after decrypt will be recheck with SHA1 checksum for ensuring integrity.
GBCrypt use RSA 4096-bit algorithm to encrypt key of AES and Blowfish.
GBCrypt is open source software, you can check it at: https://github.com/luongdangdung/gbcrypt
This software was checked for viruses and was found to be clean. Click here to see antivirus report.