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- Implicit_certificate abstract "In cryptography, implicit certificates are a variant of public key certificate, such that a public key can be reconstructed from any implicit certificate, and is said then to be implicitly verified, in the sense that the only party who can know the associated private key is the party identified in the implicit certificate. This does not rule out the possibility that nobody knows the private key, but this possibility is not considered a major problem.By comparison, traditional public-key certificates include a copy of the public key and the digital signature of the certification authority. Upon verification of the digital signature, the public key is explicitly verified, in the sense that the party identified in the certificate knows the associated private key and is the only party who can know the private key. Unlike an implicit certificate, there is no possibility that nobody knows the private key. For the purposes of this article, such certificates will be called explicit certificates.Elliptic Curve Qu-Vanstone (ECQV) are one kind of implicit certificates. This article will use ECQV as a concrete example to illustrate implicit certificates. The cryptographic portion of an ECQV implicit certificate is the size of an elliptic curve point, making it considerably smaller than a comparable explicit certificate. Smaller certificates are useful in highly constrained environments, such as Radio-frequency Identification RFID tags, where not a lot of memory or bandwidth is available.Digital certificates are considered the best-known method of establishing identity in network communications. A certificate provides a binding between identity information and a public key; a key pair can subsequently be used for key exchange to set up secured communications and for digital signatures, to authenticate users or transactions for example.Conventional explicit certificates are made up of three parts: identification data, a public key and a digital signature which binds the public key to the user’s identification data (ID). The digital certificate is created by a trusted third party and its signature can be independently verified by anyone in the network. The public key, ID and digital signature are distinct data elements which make the up the physical size of the certificate. Conventional certificates can get very large. For example, a standard X.509 certificate is on the order of 1KB in size (~8000 bits). Implicit certificates carry the same data (ID, public key and digital signature) but the data elements are super imposed into a string the size of the public key. For example using an elliptic curve system at 160 bits would give us implicit certificates of size 160 bits. With implicit certificates there is no explicit validation of the Certificate Authority's (CA’s) signature on a certificate. Instead, a user computes a public key from the implicit certificate and simply uses it in the intended ECC operation, e.g. key agreement protocols such as ECDH and ECMQV, or signing such as ECDSA. The operation will fail if the certificate is invalid. Thus ECQV is regarded as an implicit validation scheme. Computing the public key is very fast, much faster than a public key operation.".
- Implicit_certificate wikiPageExternalLink c_cert_ecqv.html.
- Implicit_certificate wikiPageExternalLink secg.org.
- Implicit_certificate wikiPageExternalLink corr2000-55.ps.
- Implicit_certificate wikiPageExternalLink index.php?action=res,cc&issue=2-2&&article=3.
- Implicit_certificate wikiPageExternalLink ?action=secg,docs_draft.
- Implicit_certificate wikiPageID "9899778".
- Implicit_certificate wikiPageLength "6696".
- Implicit_certificate wikiPageOutDegree "21".
- Implicit_certificate wikiPageRevisionID "678402178".
- Implicit_certificate wikiPageWikiLink Category:Public-key_cryptography.
- Implicit_certificate wikiPageWikiLink Certificate_Authority.
- Implicit_certificate wikiPageWikiLink Certificate_authority.
- Implicit_certificate wikiPageWikiLink Cryptographic_hash_function.
- Implicit_certificate wikiPageWikiLink Cryptography.
- Implicit_certificate wikiPageWikiLink Digital_signature.
- Implicit_certificate wikiPageWikiLink Digital_signatures.
- Implicit_certificate wikiPageWikiLink ECDH.
- Implicit_certificate wikiPageWikiLink ECDSA.
- Implicit_certificate wikiPageWikiLink ECMQV.
- Implicit_certificate wikiPageWikiLink Elliptic_Curve_Digital_Signature_Algorithm.
- Implicit_certificate wikiPageWikiLink Elliptic_curve.
- Implicit_certificate wikiPageWikiLink Elliptic_curve_Diffie–Hellman.
- Implicit_certificate wikiPageWikiLink Elliptic_curve_cryptography.
- Implicit_certificate wikiPageWikiLink Key_exchange.
- Implicit_certificate wikiPageWikiLink MQV.
- Implicit_certificate wikiPageWikiLink Public-key_cryptography.
- Implicit_certificate wikiPageWikiLink Public_key.
- Implicit_certificate wikiPageWikiLink Public_key_certificate.
- Implicit_certificate wikiPageWikiLink RFID.
- Implicit_certificate wikiPageWikiLink Radio-frequency_identification.
- Implicit_certificate wikiPageWikiLink Secure_Hash_Algorithm.
- Implicit_certificate wikiPageWikiLink Secure_Hash_Algorithm_(disambiguation).
- Implicit_certificate wikiPageWikiLink Springer_Science+Business_Media.
- Implicit_certificate wikiPageWikiLink Trusted_third_party.
- Implicit_certificate wikiPageWikiLink X.509.
- Implicit_certificate wikiPageWikiLinkText "ECQV".
- Implicit_certificate wikiPageWikiLinkText "Implicit certificate".
- Implicit_certificate hasPhotoCollection Implicit_certificate.
- Implicit_certificate wikiPageUsesTemplate Template:Cite_book.
- Implicit_certificate wikiPageUsesTemplate Template:Cryptography_navbox.
- Implicit_certificate subject Category:Public-key_cryptography.
- Implicit_certificate hypernym Variant.
- Implicit_certificate type Article.
- Implicit_certificate type Article.
- Implicit_certificate comment "In cryptography, implicit certificates are a variant of public key certificate, such that a public key can be reconstructed from any implicit certificate, and is said then to be implicitly verified, in the sense that the only party who can know the associated private key is the party identified in the implicit certificate.".
- Implicit_certificate label "Implicit certificate".
- Implicit_certificate sameAs m.02pwc0_.
- Implicit_certificate sameAs Q6007261.
- Implicit_certificate sameAs Q6007261.
- Implicit_certificate wasDerivedFrom Implicit_certificate?oldid=678402178.
- Implicit_certificate isPrimaryTopicOf Implicit_certificate.