It is essential that the same key never be used twice with a stream cipher.

The T52 was one such stream cipher machine that had weak key problems.

Short periods for stream ciphers have been a practical concern.

It is quite possible for a stream cipher to be completely insecure.

RC4 is the world's most widely used stream cipher.

A stream cipher makes use of a much smaller and more convenient key such as 128 bits.

A nonce may be used to ensure security for a stream cipher.

E0 is a stream cipher used in the Bluetooth protocol.

The solution techniques have been used to attack the stream cipher Helix.

The primitive can be used both as a hash function and a stream cipher.

Stream ciphers are vulnerable to attack if the same key is used twice (depth of two) or more.

Such a system is called a stream cipher.

Some machines have more problems with weak keys than others, as modern block and stream ciphers do.

The stream cipher is then applied from packet start.

This vulnerability, shared by all pure stream ciphers, is straightforward to exploit.

Common constructions of stream ciphers are based on pseudorandom generators.

The first 32 round of the stream cipher are used for initialization and do not generate any output.

A stream cipher generates successive elements of the keystream based on an internal state.

Each block is encrypted by the stream cipher.

Attacks have been developed for block ciphers and stream ciphers.

Stream ciphers can be secure in practice, but they cannot achieve perfect secrecy like the one-time pad does.

The cipher is designed as a software efficient stream cipher.

The paper claims: "we find related keys and initial values of the stream cipher Grain 1.0.

It is simply essential to consider susceptibility to correlation attacks when designing stream ciphers of this type.

It is a stream cipher designed to have a very strong 96-bit key strength with a way to reduce the strength to 32-bits for export.