dans le cadre de

within the scope of, within the framework of, as part of

de la

1. of the
2. some; the feminine partitive article

cryptographie

cryptography (discipline concerned with communication security)

clef

1. Alternative spelling of clé (“key”)
2. clef
3. key; the device as shown on a coat of arms

ce

• Det

  this, that

• Pron

n'est

contraction of ne + est (third-person singular indicative present form of être)

plus

• Adv

  1. more, -er (used to form comparatives of adjectives)
  2. more, -er (used to form comparatives of adverbs)
  3. more, -er (indicating a higher degree or quantity)
  4. more (indicating a greater quantity) [+ de (noun)]
  5. more (supplementary, preceded by de)
  6. the most, -est (used to form superlatives of adjectives and adverbs)
  7. no longer, not ... any more
  8. the more ..., the more ...
  9. the more ..., the ...

• Noun
• Verb
• Verb

nécessaire

• Adj

  necessary

• Noun