BCArchive
BCArchive allows you encrypt files and folders into an encrypted archive
You may encrypt files and folders into an encrypted archive using BCArchive. You can use such an encrypted archive to store data in an encrypted format or incorporate it into a self-extracting application that you can send to a friend via email. Strong symmetric encryption techniques including Blowfish, IDEA, Triple-DES, CAST5, and Serpent are used by BCArchive. It also complies with X.509, PKCS #5, PKCS #12, and secure hash algorithms like SHA-1, MD5, and RIPEMD-160. Asymmetric encryption algorithms like RSA and ELGamal/Diffie-Hellman are used as well. With BCArchive, you can effectively handle sensitive data and take advantage of the strongest encryption technologies available in a handy software package.