Secure Network Protocols: How SSL/TLS, SSH, SFTP and FTPS Work

Provided by: Enterprise Distributed Technologies
Topic: Security
Format: PDF
In this paper, the authors explore how secure network protocols work. It will explain key concepts such as encryption, cryptographic hashes and public key encryption. The two most popular secure network protocols, SSL/TLS and SSH, will be compared, together with their secure file transfer counterparts, FTPS and SFTP. Encryption is the process of encoding information in such a way that only parties who are authorized to read the encrypted information are able to read it. Its goal is to keep information secure from eavesdroppers or secret. The unencrypted information is known as the plain-text, while the encrypted information is called the cipher-text. To obtain the plain-text from the cipher-text, an encryption key is required and only authorized parties have a copy of the encryption key.

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