Server authenticates to client using X.509 certificate, client provides material to server to derive session key, and client/serer derive same session key, start sending encrypted packets Standards to negotiate, set up, and apply cryptoĬlient contacts server to negotiate over authentication, key exchange, and cipher that takes placeĪuthentication is performed and key agreed upon, leading to all packets being encrypted with key and ciper at application level RFC 3602 on using AES in IPsec still isted as proposedĬommon standards for securing network applications in Internet (web browsing) Lots of plug-in stuff to do crypto heavy liftingĭesigned for high degree of generality so easy to plug in different crypto algorithms, different hashing/signature schemes, different key management mechsĪrchitecture doesn't require everyone to use it Methods of defining security associations, databases for keeping track of what's going on with other IPsec nodes (to know what processingto apply got outgoing and incoming packets) Supporting mechanisms at hosts running IPSec (SA database) Pretty simple, necessary to interoperate with non-IPsec equipment, so everything important is inside an individual IP packet's payload, no inter-msg components to protocol (but some security modes enforce inter-message invariants) Protocol standards to allow msgs to move securely between nodes, Has sub-protocols (such as Encapsulating Security Payload) Meant to operate with a variety of different ciphers and to be neutral to key distribution Really designed for end-to-end encryption but could do link level SPI (Security Parameters Index) - combined with destination IP address and IPsec protocol type, uniquely identifies an SA Security Association (SA) - secure one-way channel Non-repudiation, digital signatures, key distribution, traffic analysis, handling of security associations, some of these covered in related standards Provide various options for encrypting and authenticating packets on end-to-end basis without concern for transport layer (or higher) Standard for applying crypto at network layer of IP stack ![]() The app-specific code will (mostly) only be of interest to those seeking to ripoff your content.Definition of where end points are (which layer) has serious implications for where to do crypto and keying/trust issues As a developer serious about producing value, the only thing of value to me as a fellow developer might be your libraries. My recommendation is that if you do open-source, that you add a license to your code & only share the libraries and generic content. With an android app, your primary concern should/would be copycats who basically upload a ripoff version (making yours more obscure), add in advertisements, notification spam, etc.Īs far as benefits? In theory, another developer may stumble across your source code and find it useful while making their own app. Most open source projects that do work, primarily work on the basis of having little benefit or potential for parasitic activity, due to the work involved, the software being free, and a quality license that allows the creator to take down any would-be parasitic content. One of the major 'cons' of giving away free stuff is that it tends to attract the parasites, and those looking for handouts. ![]() Haven't released anything yet but the apps I'm working on are on GitHub which will host open projects for free. I also plan on releasing any apps I make as open source under GPL. I personally have a strong preference to open source and will use open apps even if they are slightly worse than proprietary free apps. Potential for hackers to discover security flaws easierĬhance some scumbag "developer" can rip your app and post to Play Store and walk away with cash before it is banned. as even if you pull the official version or remove disallowed features the community can maintain their own version.Īlgorithms are out in the open for the taking You can host your code in a multitude of free online repositories. ![]() Even if you publish an ad/paid version on Play Store it is legal and possible for adfree free versions and those of us who hate ads will seek them out.ĭevelopers can submit patches and reuse code in their own projects provided your license allows it. Users like it, the apps are available for free, no ads, etc.
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