eSTREAM is a project to "identify new stream ciphers suitable for widespread adoption",[1][2] organised by the EU ECRYPT network.
Phase 1 included a general analysis of all submissions with the purpose of selecting a subset of the submitted designs for further scrutiny.
The designs were scrutinized based on criteria of security, performance (with respect to the block cipher AES—a US Government approved standard, as well as the other candidates), simplicity and flexibility, justification and supporting analysis, and clarity and completeness of the documentation.
The selected algorithms were: The eSTREAM portfolio ciphers are, as of January 2012[update]:[7] Versions of the eSTREAM portfolio ciphers that support extended key lengths: Note that the 128-bit version of Grain v1 is no longer supported by its designers and has been replaced by Grain-128a.
As of December 2008[update]: This cipher was in the original portfolio but was removed in revision 1, published in September 2008.