Facebook to Roll Out Fizz Library

This library accelerates the deployment of TLS 1.3 over the Internet
08 August 2018   281

Facebook introduced a library called Fizz, specially released for the recent update of TLS under the number 1.3. Fizz is a library that accelerates the deployment of TLS 1.3 over the Internet and increases the speed and security of applications and services.

Features:

  • Asynchronous I / O supported by default
  • Improved collection / spread of input / output required from copies of data.
  • Delays and loadings of service processors are reduced, which process trillions of requests per day.
  • Data is divided into "pieces" and encrypted.

Fizz and TLS 1.3 are globally applied in mobile Proxygen applications, in load balancers, in internal services and the QUIC library, mvfst. Currently, Facebook protects more than 50% of its traffic using Transport Layer Security. Applications that use Fizz perform fewer memory and copy allocations.

In TLS 1.3, the concept of "early data" (zero data, or data from 0-RTT) was introduced, which helped to reduce the waiting time. According to ITEF, it does this without waiting for the TLS acknowledgment. However, this concept can be unsafe, so Fizz includes an API that helps to get rid of shortcomings.

In addition, Fizz provides two types of APIs that can handle the rejection of "early data": transparently or allowing the application to modify the information sent repeatedly.

Cloudflare to Develop IPFS Gateway

According to the developers, new gateway will allow to create P2P based websites
20 September 2018   215

Cloudflare told about the IPFS gateway, which will allow creating sites based on P2P network. The company said that access to content will be done without having to install special software on the devices.

As a technology feature, Cloudflare experts note decentralization. Using a standard network scheme with servers involves physical storage of data in one place. Hacking the server or damage to communications as a result of an emergency (for example, a natural disaster) will lead to inaccessibility of information or its loss. The same is threatened with information if the server owner has decided to refuse it.

Cloudflare Network
Cloudflare Network

The IPFS gateway combines computers, on each of which some information is stored, to the worldwide network. Therefore, the inaccessibility of one computer does not mean that the content can not be viewed or downloaded. Therefore, the key differences are two:

  1. With IPFS, anyone can freely post information instead of storing it on remote servers and paying for their services.
  2. Requests for access to data are carried out using cryptographic hashing, rather than by IP address. The query data is converted to a series of letters and numbers, by which the system finds the required files. For example, the query for any information will not like "get information that is located at IP address 93.184.216.34", but the kind "get information with hash sum QmXnnyufdzAWL5CqZ2RnSNgPbvCc1ALT73s6epPrRnZ1Xy". This hash sum is part of the desired file and is on several computers.

The system automatically determines the authenticity of the file. If we take as an example a query with a hash sum QmXnnyufdzAWL5CqZ2RnSNgPbvCc1ALT73s6epPrRnZ1Xy, then when receiving the information it should remain the same. If the hash value differs, then the file has been changed. In other words, the hash-sum can be represented as a unique fingerprint:

IPFS Security
IPFS Security

Supporters of decentralization are also in a number of other companies. Mozilla employees believe that consumers should not be tied to a particular product, brand or platform. In early August 2018, developers published a version of the IoT gateway Things Gateway 0.5. In it, they realized the possibility of loading third-party icons and an interface for complex devices.