Some signals carry encryption and specify use conditions ( such as " may not be recorded " or " may not be viewed on displays larger than 1 m in diagonal measure ") backed up with the force of law under the WIPO Copyright Treaty and national legislation implementing it, such as the U. S. Digital Millennium Copyright Act.

Some consider emoticons and ASCII art, like smiley faces, to be leet, while others maintain that leet consists of only symbolic word encryption.

Some encryption schemes can be proven secure on the basis of the presumed difficulty of a mathematical problem, such as factoring the product of two large primes or computing discrete logarithms.

Some special and specific algorithms have been developed to aid in attacking some public key encryption algorithms-both RSA and ElGamal encryption have known attacks that are much faster than the brute-force approach.

Some modern scramblers are actually encryption devices, the name remaining due to the similarities in use, as opposed to internal operation.

Some are no longer relevant given the ability of computers to perform complex encryption, but his second axiom, now known as Kerckhoffs's principle, is still critically important.

Some secure cryptoprocessors contain dual processor cores and generate inaccessible encryption keys when needed so that even if the circuitry is reverse engineered, it will not reveal any keys that are necessary to securely decrypt software booted from encrypted flash memory or communicated between cores.

Some phones include a special monitor mode ( activated with secret codes or special software ) which displays GSM operating parameters such as encryption while a call is being made.

Some virtual networks may not use encryption to protect the data contents.

Some modern modes of operation combine encryption and authentication in an efficient way, and are known as authenticated encryption modes.

Some of the methods of protecting e-business security and keeping information secure include physical security measures as well as data storage, data transmission, anti-virus software, firewalls, and encryption to list a few .< ref name =" canada "> Industry Canada | Industrie Canada.

Some protocols like FTP and Telnet transfer data and passwords in clear text, without encryption, and network scanners can see this data.

Some web servers will not communicate with a client unless it has a 128-bit encryption capability installed on it.

Some basic information about the MIFARE Classic or MIFARE DESFire chip can be read by any ISO / IEC 14443 type A compatible reader, but Oyster-specific information cannot be read without access to the encryption used for the Oyster system.

; Secret system: Some encryption systems will claim to rely on a secret algorithm, technique, or device ; this is categorized as security through obscurity.

Some of the newer pastebins provide features for comparing two or more pastes, synchronous notifications through IRC or XMPP, paste histories, encryption, password protection, and virtual subdomains.

Some encryption systems for which CAMs are available are Logiways, Nagravision, Viaccess, Mediaguard, Irdeto, KeyFly, Verimatrix, Cryptoworks, Mascom, Safeview, Diablo CAM and Conax.

* Some servers require passwords to be stored using reversible encryption.

Some also provide plausible deniability with deniable encryption techniques.

Some examples of file encryption software are GNU Privacy Guard and PGP ).

Some disk encryption systems offer two levels of Plausible Deniability, which might be useful in case a user is required to reveal the password of an encrypted volume.

Some disk encryption software allows encrypted volumes to be resized.

Some relate directly to particular algorithms and techniques, while others are produced together.

Some algorithms have a property called backward stability.

Some formal design methods and programming languages emphasize data structures, rather than algorithms, as the key organizing factor in software design.

Some variants are commonly referred to as square-and-multiply algorithms or binary exponentiation.

Some of those algorithms will map arbitrary long string data z, with any typical real-world distribution — no matter how non-uniform and dependent — to a 32-bit or 64-bit string, from which one can extract a hash value in 0 through n − 1.

Some supervised learning algorithms require the user to determine certain control parameters.

Some of the earliest-used machine learning algorithms, such as decision trees, produced systems of hard if-then rules similar to existing hand-written rules.

Some of the earliest-used algorithms, such as decision trees, produced systems of hard if-then rules similar to the systems of hand-written rules that were then common.

Some, but not all, authors restrict the term " programming language " to those languages that can express all possible algorithms.

Some public-key algorithms are based on problems other than the integer factorization and discrete logarithm problems to which Shor's algorithm applies, like the McEliece cryptosystem based on a problem in coding theory.

Some common features of queue managers are: re-prioritization of the queue, management of software licenses, and algorithms to best optimize throughput based on various types of hardware in the farm.

Some commonly used RTOS scheduling algorithms are:

; Loop nest optimization: Some pervasive algorithms such as matrix multiplication have very poor cache behavior and excessive memory accesses.

Some of his well-known algorithms include Tarjan's off-line least common ancestors algorithm, and Tarjan's strongly connected components algorithm.

Some high compression algorithms require high processing power.

Some algorithms are useful only when the characteristic data are molecular ( DNA, RNA ); other algorithms are useful only when the characteristic data are morphological.

Some translation memories systems search for 100 % matches only, that is to say that they can only retrieve segments of text that match entries in the database exactly, while others employ fuzzy matching algorithms to retrieve similar segments, which are presented to the translator with differences flagged.

#; Quality algorithms: Some public-key algorithms are known to be insecure, practical attacks against them having been discovered.

Some of the algorithms that code for development of these regions have been deciphered and incorporated into neural net computers.

Some algorithms that are in use or have been evaluated are ALINEA, demand control and fuzzy algorithms.