Pure elgamal cryptosystem implemented in Go
Implementation of the El Gamal cryptosystem. See http://en.wikipedia.org/wiki/ElGamal_encryption for an introduction.
The difference between this implementation and the one at golang.org/x/crypto/openpgp/elgamal is the use of absolutly no padding here.
The absance of padding is cool if you want to encrypt numbers and need to make algebra on the cypher texts. The use of padding is needed when you encrypt data and you do not want to allow algebraic operations on the cypher texts.
Another important feature of the library is the ease of serilisation of all the structs in JSON and BSON.
As any cryptographic library, if you use it, you need to trust it. Unfortunatly, this library as not been verified by a third party. There might be some bugs and vulnerabilities. If you find one, please fill a bug.
Thanks to godoc.org, the documentation is available at http://godoc.org/github.com/didiercrunch/elgamal