ШИФРОВАНИЕ ДАННЫХ

Honelako gehiago

WinRar

by Savio Buxton

А ты готов к ОГЭ по информатике?

by Анастасия Толстихина

Avtok

by Elizaveta Tiutiunnik

ВЫДАЮЩИЕСЯ УЧЕНЫЕ, ВНЕСШИЕ ВКЛАД В РАЗВИТИЕ ВЫЧИСЛИТЕЛЬНОЙ ТЕХНИКИ

by Евгений Зимин

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ШИФРОВАНИЕ ДАННЫХ

Tenses demonstrate the time of actions centered around the subject of the sentence. These actions are called verbs and change according to tenses.

Алгоритмы

There are four Future tenses:

• Future Simple ('with Will' and 'with Going to')
• Future Continuous
• Future Perfect Simple
• Future Perfect Continuous

Шифрование с ключом

Future Continuous is used:

• for an action that is likely to happen in the future and continue for an expected length of time
• for an action that will be in progress at some point in the future
• for action verbs (e.g. running)
• for predictions about future events

Adverb used with Future Continuous:

• tomorrow (e.g. tomorrow at 5 o'clock)

Двухключевые

Structure:

Will + Subject + Be +Verb-ING?

e.g. Will you be having fun at the party?

Электронная подпись

Асимметричное шифрование

Type in your own examples or you can also choose from the examples below.

Form of word "to be":

Form of word "to have":

RSA

Diffie-Hellman

Одноключевые КА

Structure:

Subject + Won’t Be + Verb-ING

e.g. He won’t be having fun at the party.

Симметричное шифрование

Type in your own examples or you can also choose from the examples below.

Form of word "to be":

Form of word "to have":

Поточное

Международный алгоритм шифрования данных (IDEA)

Расширенный стандарт шифрования (AES)

Блочное

Стандарт шифрования данных (DES)

Бесключевые

Structure:

Subject + Will Be + Verb-ING

e.g. You will be having fun at the party.

Хэширование

Type in your own examples or you can also choose from the examples below.

Form of verb 'to be':

Form of verb 'to have':

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Тайнопись

Future Simple is used:

• to predict an event in the future
• to invite
• to give orders
• to express willingness
• for actions that have not yet occurred but that will occur at a future date

Классификация Шифраторов

There are four Past tenses:

• Past Simple
• Past Continuous
• Past Perfect Simple
• Past Perfect Continuous

По интерфейсу

Past Perfect Continuous is used:

• for an action that started in the past and continued up to another point in the past
• to show cause and effect

Some adverbs used with Past Perfect Continuous:

• since (e.g. since yesterday)
• for (e.g. for 10 years, for 6 months)

Другие

Structure:

Had + Subject + been Verb-ING?

e.g. How long had they been living in London before moving here?

Смарт -карта

Structure:

Subject + hadn’t been/had not been + Verb-ING

e.g. I was tired because I hadn't been sleeping.

USB- брелок

Structure:

Subject + had been + Verb-ING

e.g. They had been talking for over an hour before I arrived.

По конструкции

Past Perfect Simple is used for:

• an action that began in the past and is still going on at the moment of speaking
• an action that continued before and after another action
• a change of mind
• an action happening repeatedly in the past

The Past Perfect tense is not normally used alone. It is used to denote the earlier of two past actions. We use Past Simple for the latter action.

Some adverbs used with Past Perfect Simple:

• already, before, ever, never
• once, twice, yet
• just, up to then
• for, since

Встроенные

Structure:

Had + Subject + Past Participle?

e.g. Had they met Sarah before the party?

Автономные

Structure:

Subject + hadn’t (had not) + Past Participle

e.g. They hadn’t met Julia before the party.

На базе ПК

Structure:

Subject + had + Past Participle

e.g. They had already met Julia before the party.

По схемотехнике

Past Continuous is used for:

• an action that happened before another action in the past
• an action that started in the past and continued up to a given time in the past
• an action done several times up to a point in the past and continued to do after that point
• an action that happened in the past but is important at the time of reporting

Some adverbs used with Past Continuous:

• always, only, never, ever, still, just

Смешанные

Structure:

Was/ were + Verb-ING?

e.g. Were you studying when she called?

Программные

Structure:

Subject + wasn’t (was not)/ weren’t (were not) + Verb-ING

e.g. You were not studying when she called.

Аппаратные

Structure:

Subject + was/ were + Verb-ING

e.g. You were studying when she called.

По количеству пользователей

Past simple expresses:

• an action that happened in the past and has no connection with the present
• an action that happened once in the past
• an action that happened regularly in the past
• an action that was true for some time in the past
• an event or action that already occurred
• an action that is finite - has both a starting and a stopping point

Some adverbs used with Past Simple:

• yesterday
• last month, last year
• ago (e.g. two days ago)
• in (e.g. in 1997)
• never, always, seldom, often, frequently, occasionally, once, twice

Групповые

Structure:

Subject + did not/didn’t + Base Form of the Verb

e.g. They didn’t like my food.

Персональные(абонентские)

Structure:

Subject + Verb in Past Simple (2nd form)

e.g. They lived in Spain three years ago.

Цели

There are four Present tenses:

• Present Simple
• Present Continuous
• Present Perfect
• Present Perfect Continuous

Расшифровывание

Present Continuous is used to indicate the ongoing time (now).

Some adverbs used with Present Continuous:

• now, right now
• at this moment
• at the moment
• continually
• perpetually
• this year
• this season
• forever

Зашифровывание

Present Simple is used for:

• habits
• general truths
• repeated actions of events
• fixed arrangements/timetables
• feelings/opinions/beliefs
• instructions.

Some adverbs used with Present Simple:

• always
• usually
• seldom
• never
• sometimes
• often
• frequently, generally
• habitually, occasionally
• once, twice