TEKNIK PASSWORD HASH DENGAN ALGORITMA BLOWFISH UNTUK ENKRIPSI PLAIN TEXT MENJADI CHIPPER TEXT BERBASIS WEB SERVICE (Studi kasus : PT. Sumber Graha Sejahtera)

Currently on the web service for new employees at PT. Sumber Graha Sejahtera is still prone to data theft. with the vulnerability of theft, HRD wants a web service with a security. By providing important data on the web service, of course there is the possibility of data leakage, therefore the web service that is created really requires a security technique. The security technique used is called cryptography, where the researcher uses a password hash technique with the blowfish algorithm to secure the web service, which is expected to minimize unwanted threats such as from hackers. The purpose of this research is to use one-way security, namely hashed passwords and the blowfish algorithm or commonly known as bcrypt to secure web service from outside attacks. This one-way security only encrypts plain text into cipher text, and can't do the other way around. Based on the analysis obtained, the password hash can be applied to a web service when registering. The hash password technique using the blowfish algorithm is expected to minimize the possibility of theft even if the theft occurs it will take a long time to decipher the encrypted plain text into cipher text.