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[{"key": "dc.contributor.advisor", "value": "Costin, Andrei", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Sippo, Markus", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-12-22T10:04:54Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-12-22T10:04:54Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2021", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/79138", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Luottamuksellisen datan m\u00e4\u00e4r\u00e4 verkkopalveluissa nousee jatkuvasti, joka asettaa vaatimukset datan salaukselle siirron aikana ja palvelimen tunnistamiselle. Vakiintunut ratkaisu edell\u00e4mainittuihin vaatimuksiin on Transport Layer Security (TLS). Teknisesti TLS vaatii toimiakseen X.509 varmenteen. Vaikka X.509 varmenteet ovat hyvin ymm\u00e4rrettyj\u00e4, niiden implementointi usein aiheuttaa h\u00e4mmennyst\u00e4 p\u00e4\u00e4k\u00e4ytt\u00e4jille ja kehitt\u00e4jille, jonka seurauksena virheet implementoinneissa ovat yleisi\u00e4. T\u00e4m\u00e4n lis\u00e4ksi varmenteilla on voimassaolo p\u00e4iv\u00e4m\u00e4\u00e4r\u00e4, joka tarkoittaa ett\u00e4 varmenteet tulee uusia ajoittain. Varmenteiden uusiminen voi unohtua tai se j\u00e4tet\u00e4\u00e4n tarkoituksella tekem\u00e4tt\u00e4, joka aiheuttaa usein yhteys ongelmia verkko-palveluihin. T\u00e4m\u00e4 tutkimus tuottaa tietoa vanhentuneiden varmenteiden k\u00e4yt\u00f6st\u00e4 ja niiden yleisyydest\u00e4. T\u00e4m\u00e4n lis\u00e4ksi, t\u00e4m\u00e4 tutkimus tuottaa tietoa liittyen palveluihin ja liiketoimintaan, jotka tyypillisimmin k\u00e4rsiv\u00e4t vanhentuneista varmenteista. Lis\u00e4ksi tutkimus luokittelee yleisimm\u00e4t virhetilanteet TLS implementoinneissa. Tutkimuksen tulokset osoittavat, ett\u00e4 varmenteiden vanhemeninen on yleinen ongelma, josta k\u00e4rsiv\u00e4t kaiken tyyppiset verkko-palvelut aina valtioiden verkkosivuista verkkokauppoihin.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The amount of confidential data in web services is continuously rising, which sets requirements for data encryption during transmission and server authenti-cation. The commonly adopted solution is Transport Layer Security (TLS), which solves both requirements presented above. Technically TLS relies on X.509 certificates to provide features. While X.509 certificates are well-understood topic, the implementation often confuses the domain administra-tors and errors during the configuration are common. On top of this, certificates have an expiration date, which means that the certificates need to be renewed from time to time. Often, the renewal is either forgotten or neglected by the administrators, which leads to connection issues. This study provides insight on expired certificates and their usage. In addition, this study provides insight on what type of services and businesses are impacted by expired certificates. Most common error cases in TLS implementations were also extracted from the data. The results of this paper indicate that certificate expiration is a common problem, that affects all types of online services, ranging from governmental online services to online shops.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2021-12-22T10:04:54Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-12-22T10:04:54Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "66", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "X.509", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "SSL/TLS", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "certificates", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Time-based expiration problem of the SSL/TLS certificates", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202112226120", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Informaatioteknologian tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Information Technology", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Informaatioteknologia", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Information Technology", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Tietoj\u00e4rjestelm\u00e4tiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Information Systems Science", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "601", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "salaus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "verkkopalvelut", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "encryption", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "online services", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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