Ćosić is a Bosnian, Croatian and Serbian surname. It may refer to:
The Computer Security and Industrial Cryptography research group, commonly called COSIC, is a research group at the Department of Electrical Engineering of the Katholieke Universiteit Leuven, which is headed by Professor Bart Preneel, Vincent Rijmen, and Professor Ingrid Verbauwhede.
The goal of COSIC's research activities is to create a secure electronic equivalent for interactions in the physical world such as confidentiality, signatures, identification, anonymity, payment and elections. The research concentrates on the design, evaluation, and implementation of cryptographic algorithms and protocols, on the development of security architectures for information and communication systems and on the development of security mechanisms for embedded systems. COSIC's theoretical work is mainly based on discrete mathematics such as number theory, finite fields, Boolean algebra, but also includes statistics and optimization. The aim is to achieve efficient and secure solutions. The broader goal is to achieve efficient and secure multi-party computation. These mathematical tools are applied to increase our understanding of the strengths and weaknesses of cryptographic algorithms and to develop new and better algorithms such as block ciphers, stream ciphers, public-key encryption algorithms and zero-knowledge identification protocols.
Viva a vida
O teu sonho, tua fantasia
Viva sua vida
Eu vou na frente
Pra quebrar essa corrente
Que segura essa gente
Que não deixa ela crescer
Eu falo alto só pra ver se ela me escuta
É todo dia nessa luta
Mais um dia eu vou vencer...
O vento soprando em meu rosto
É bom...
No fim do horizonte eu vejo o sol
Você tem que deixar de mentir
Acreditar na cultura do nosso país
Pois aqui eu tenho a natureza,
Eu tenho a natureza
Eu sou congueiro, batuqueiro
Sou guerreiro, sou da Barra do Jucu...