Cryptography

From Friend2Friend Wiki

Cryptography is the obfuscation (encoding) and associated recovery of information.

Contents 1 Relevance to F2F 1.1 Public Key to Establish Identity 1.2 Cryptographic Services 1.3 Server-level Encryption 2 References

Relevance to F2F

Cryptography has been central to F2F since the project's inception. The essential insight is that public-private key cryptography is sufficient to establish identity, and requires no 3rd party to validate the communication.

Public Key to Establish Identity

Since each soft-system has its own keypair, F2F relies on cryptography to establish identity.

Cryptographic Services

Soft code can use the following services to manipulate XML:

• http://friend2friend.net/services/crypt-decrypt
• http://friend2friend.net/services/crypt-encrypt
• http://friend2friend.net/services/crypt-hash
• http://friend2friend.net/services/crypt-sign
• http://friend2friend.net/services/crypt-verify

Server-level Encryption

In addition to the levels above, All communication between F2F severs is obfuscated by the hard code.

References

• FF2 - Introduction to F2F, begins by introducing Public-private cryptography
• Wikipedia cryptography page