It became a national holiday in 1948, but it has been a day of celebration in Japan since ancient times. The fifth day of the fifth month was traditionally called Tango no Sekku and was a festival for boys. Girls have their own festival, called Hina Matsuri (Doll Festival), held on the third day of the third month.
Expressions full disk encryption (FDE) or whole disk encryption signify that everything on disk is encrypted, but the master boot record (MBR), or similar area of a bootable disk, with code that starts the operating system loading sequence, is not encrypted.
The keys which EFS uses to encrypt and decrypt data, is a public and private key pair, and a per file encryption key. EFS generates a file encryption key (FEK) which is a symmetric encryption key to encrypt the data. The File Encryption Key (FEK) is next encrypted by means of asymmetric encryption using the userâs public key. Asymmetric encryption actually uses a public and private key pair for stronger security.