Every day digital resources protection is an appealing research area because the amount of e-documents transmitted over non-secure channels such as the Internet has increased considerably. So, secure mechanisms must be implemented to identify illegal copies of crucial information. Many researchers have proposed solutions based on controlled environments applying asymmetric cryptography. Other researchers have applied some techniques such as steganography, cryptography and security protocols to deal with uncontrolled environment. This paper presents a secure framework to sign and authenticate remotely digital documents focused on uncontrolled environment.