HMAC 개념 잡기 - http://nts_story.blog.me/50109958210HMAC 을 이용한 REST 보안 - http://www.thebuzzmedia.com/designing-a-secure-rest-api-without-oauth-authentication/HMAC 프로그래밍 언어별 구현 방법External linksOnline HMAC Calculator for dozens of underlying hashing algorithmsFIPS PUB 198, The Keyed-Hash Message Authentication CodePHP HMAC implementationPython HMAC implementationPerl HMAC implementationRuby HMAC impl..