"self-signed" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "self",
        "3": "signed"
      },
      "expansion": "self- + signed",
      "name": "prefix"
    }
  ],
  "etymology_text": "self- + signed",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "self-signed (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with self-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "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": [
        "Of a security certificate: signed by the same entity whose identity it certifies; signed with its own private key."
      ],
      "hypernyms": [
        {
          "word": "signed"
        }
      ],
      "id": "en-self-signed-en-adj-KgFsiX60",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "cryptography",
          "cryptography"
        ],
        [
          "security",
          "security"
        ],
        [
          "certificate",
          "certificate"
        ],
        [
          "entity",
          "entity"
        ],
        [
          "identity",
          "identity"
        ],
        [
          "certifies",
          "certify"
        ],
        [
          "private key",
          "private key"
        ]
      ],
      "raw_glosses": [
        "(computing, cryptography) Of a security certificate: signed by the same entity whose identity it certifies; signed with its own private key."
      ],
      "related": [
        {
          "word": "self-signing"
        }
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "computing",
        "cryptography",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "self-signed"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "self",
        "3": "signed"
      },
      "expansion": "self- + signed",
      "name": "prefix"
    }
  ],
  "etymology_text": "self- + signed",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "self-signed (not comparable)",
      "name": "en-adj"
    }
  ],
  "hypernyms": [
    {
      "word": "signed"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "self-signing"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms prefixed with self-",
        "English uncomparable adjectives",
        "en:Computing",
        "en:Cryptography"
      ],
      "glosses": [
        "Of a security certificate: signed by the same entity whose identity it certifies; signed with its own private key."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "cryptography",
          "cryptography"
        ],
        [
          "security",
          "security"
        ],
        [
          "certificate",
          "certificate"
        ],
        [
          "entity",
          "entity"
        ],
        [
          "identity",
          "identity"
        ],
        [
          "certifies",
          "certify"
        ],
        [
          "private key",
          "private key"
        ]
      ],
      "raw_glosses": [
        "(computing, cryptography) Of a security certificate: signed by the same entity whose identity it certifies; signed with its own private key."
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "computing",
        "cryptography",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "self-signed"
}