"key exchange" meaning in English

{
  "forms": [
    {
      "form": "key exchanges",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "key exchange (countable and uncountable, plural key exchanges)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
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          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Spanish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Cryptography",
          "orig": "en:Cryptography",
          "parents": [
            "Computer science",
            "Formal sciences",
            "Mathematics",
            "Computing",
            "Sciences",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An exchange of peers' keys at the initialization phase of connection."
      ],
      "id": "en-key_exchange-en-noun-UueqnDkh",
      "links": [
        [
          "cryptography",
          "cryptography"
        ],
        [
          "peer",
          "peer"
        ],
        [
          "initialization",
          "initialization"
        ],
        [
          "connection",
          "connection"
        ]
      ],
      "raw_glosses": [
        "(cryptography) An exchange of peers' keys at the initialization phase of connection."
      ],
      "synonyms": [
        {
          "word": "key agreement"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "computing",
        "cryptography",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "exchange of peers' keys",
          "word": "avaintenvaihto"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "exchange of peers' keys",
          "tags": [
            "masculine"
          ],
          "word": "échange de clés"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "exchange of peers' keys",
          "tags": [
            "masculine"
          ],
          "word": "intercambio de claves"
        }
      ]
    }
  ],
  "word": "key exchange"
}

{
  "forms": [
    {
      "form": "key exchanges",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "key exchange (countable and uncountable, plural key exchanges)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with French translations",
        "Terms with Spanish translations",
        "en:Cryptography"
      ],
      "glosses": [
        "An exchange of peers' keys at the initialization phase of connection."
      ],
      "links": [
        [
          "cryptography",
          "cryptography"
        ],
        [
          "peer",
          "peer"
        ],
        [
          "initialization",
          "initialization"
        ],
        [
          "connection",
          "connection"
        ]
      ],
      "raw_glosses": [
        "(cryptography) An exchange of peers' keys at the initialization phase of connection."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "computing",
        "cryptography",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "key agreement"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "exchange of peers' keys",
      "word": "avaintenvaihto"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "exchange of peers' keys",
      "tags": [
        "masculine"
      ],
      "word": "échange de clés"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "exchange of peers' keys",
      "tags": [
        "masculine"
      ],
      "word": "intercambio de claves"
    }
  ],
  "word": "key exchange"
}