unable to exchange encryption keys

Encryption, is a special algorithm to change the original information data, so that unauthorized users even obtained encrypted information, but because of the method of decryption, still can not understand the content of the information. Generally

1. Clear text transmissionFtp,http,smtp,telnet2. Confidentiality:plaintext--> Conversion Rules-->ciphertextciphertext--> Conversion Rules-->plaintextIntegrity: Single encryption algorithm, extract data signature. As input, the output must be the

Overview : Two computers when communicating on the Internet, the information sent between them without special processing, that is, the encryption mechanism, it is easy to be obtained by other people, if it is ordinary information, it does not

What is encryption?Encryption technology is the most common security means, using technical means to turn important data into garbled (encrypted) transmission, to the destination and then use the same or different means to restore

Encryption type and its related algorithmsAs the internet becomes more and more intense, attacks on the internet are on the rise, so the information passed on the Internet is increasingly unsafe, so in order to prevent users from stealing data that

Cryptographic decryption related conceptsThree ways in which man-in-the-middle attacks are commonly used on the Internet: 1) eavesdropping 2) data tampering 3) session hijackingClassification of cryptographic algorithm protocols: a)

Bitcoin encryption algorithms there are two categories: Asymmetric encryption Algorithm (Elliptic curve encryption algorithm) and hashing algorithm (sha256,rimped160 algorithm).Bitcoin private key (private key), public key, public key hash value

Data encryption features: confidentiality, integrity, and identity authentication.Common cryptographic algorithmsSymmetric encryptionThe symmetric encryption algorithm uses the same key during encryption and decryption, and cannot have a valid

1 HTTPS Protocol OverviewHTTPS can be thought of as HTTP + TLS. The HTTP protocol is familiar, and most Web applications and websites are now transmitted using the HTTP protocol. TLS is the Transport Layer encryption protocol, its predecessor is the

Topic One: Why is HTTPS safe1. Why is HTTP not secure?The HTTP protocol belongs to the plaintext transmission protocol, the interaction process and data transmission are not encrypted, the communication parties have not carried out any