Digital Certificates - Reading Assignment

Blockchain Business Course
#362

  1. A digital certificate, also known as a public key certificate, is used to cryptographically link ownership of a public key with the entity that owns it.

  2. A digital certification include the public key being certified, identifying information about the entity that owns the public key, metadata relating to the digital certificate and a digital signature of the public key created by the issuer of the certificate.

Public key cryptography depends on key pairs: one a private key to be held by the owner and used for signing and decrypting, and one a public key that can be used for encryption of data sent to the public key owner or authentication of the certificate holderā€™s signed data.

In short, the digital certificate enables entities to share their public key in a way that can be authenticated.

  1. Domain Validated (DV SSL) certificates, Organization Validated (OV SSL) certificates, Extended Validation (EV SSL) certificates, Code signing certificates and Client certificates.

  2. CAs are considered trusted third parties in the context of a PKI; using a trusted third party to issue digital certificates enables individuals to extend their trust in the CA to the trustworthiness of the digital certificates that it issues.

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#363
  1. A digital certificate, also known as a public key certificate, is used to cryptographically link ownership of a public key with the entity that owns it.
  2. The digital certificate enables entities to share their public key in a way that can be authenticated.
  3. for public key cryptography functions
  4. trusted third parties who can issue digital certificates
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#364

Digital Certificates

  1. What is a digital certificate?
    Digital certificates (a.k.a. public key certificates) are digital documents that cryptographically link a public key to its owner. This is done by combining the public key with some information about the owner of that key and meta data pertaining to the certificate itself which is then altogether digitally signed by an issuing authority.

  2. What is the difference between a digital certificate and a public key?
    Digital certificates are a central part of the Public Key Infrastructure that is used to distribute and authenticate public keys which in turn are then used for encryption/decryption and authentication of data (e.g. messages, transactions, files, ā€¦).

  3. What is the most common use case for digital certificates?
    Digital certificates are most commonly used for initializing secure SSL connections between web browsers and web servers. Digital certificates are also used for sharing keys to be used for public key encryption and authentication of digital signatures.

  4. What is a certificate authority?
    Certificate authorities are trusted third parties in the PKI that issue digital certificates.

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#365

  1. What is a digital certificate?
    A digital certificate, also known as a public key certificate, is used to cryptographically link ownership of a public key with the entity that owns it. Digital certificates are for sharing public keys to be used for encryption and authentication. Digital certificates include the public key being certified, identifying information about the entity that owns the public key, metadata relating to the digital certificate and a digital signature of the public key created by the issuer of the certificate.

  2. What is the difference between a digital certificate and a public key?
    Public key depends on key pairs: one private key to be held by the owner used for signing and decrypting and one a public key that can be used for encryption of data sent to the public key owner or authentication of the certificate holderā€™s signed data. The digital certificate enbale entities to share their public key in a way that can be authenticated.

  3. What is the most common use case for digital certificates?
    To provide assurance that published content has not been modified by any unauthorized actors, and to share keys for encrypting and decrypting web content.

  4. What is a certificate authority?
    The majority of digital certficates are issued by a certificate authoriy. CAs are considered trusted third parties.

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#366

  1. What is a digital certificate?
    A digital certificate or public key certificate, is used to cryptographically link ownership of a public key with the entity that owns it.

  2. What is the difference between a digital certificate and a public key?
    A public key includes both encryption and authentication. Digital signatures are generated using algorithms for signing of data, with the result that a recipient can irrefutably confirm that the data was signed by the holder of a particular public key.

  3. What is the most common use case for digital certificates?
    They are used for initializing secure SSL connections between web browsers and web servers.

  4. What is a certificate authority?
    Certificate authorities (CA) are considered trusted third parties which issue digital certificates

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#367
  1. What is a digital certificate?
    like an electronic document, its being used to prove ownership of keys and similar things
  2. What is the difference between a digital certificate and a public key?
    digital certificate has much more infos than a public key. contains info like issuer and entity
  3. What is the most common use case for digital certificates?
    SSL, to provide information to someone encryptet
  4. What is a certificate authority?
    issuer digital certificates
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#368

  1. A digital certificate, also known as a public key certificate, is used to cryptographically link ownership of a public key with the entity that owns it.

  2. Digital certificates include the public key being certified, identifying information about the entity that owns the public key, relating to the digital certificate and a digital signature.

  3. Digital certificates are most commonly used by web browsers and web servers to provide assurance that published content has not been modified by any unauthorized actors, and to share keys for encrypting and de-crypting web content.

  4. An authority that issues a digital certificate, usually a trusted third party.

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#369

Reading Assignment: Digital Certificate (Answers)

  1. It is a cryptographic link of public key with entity who owns it.

  2. Digital certificates are for public sharing.

  3. Initializing secure SSL connection between web browser and web server.

  4. A trusted third party in the context of PKIā€™s.

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#370

1.)
A Digital Certificate, also known as a public key certificate, is used to cryptographically link ownership of a public key with the entity that owns it. Digital certificates are for sharing public keys to be used for encryption and authentication.

2.)
Public key cryptography depends on key pairs: one a private key to be held by the owner and used for signing and decrypting , and one a public key that can be used for encryption of data sent to the public key owner or authentication of the certificate holderā€™s singed data. The digital certificate enables entities to share their public key in a way that can be authenticated.

3.)
To Provide assurance that published content has not been modified by any unauthorised actors, and to share keys for encrypting and decrypting web content.

4.)
The Vast majority of digital certificates are issued by a certificate authority (CA), (CA)'s are considered trusted third parties.

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#371
  1. Itā€™s a public key certificate
  2. Cryptographic proof that the certificate is associated with a public key
  3. SSL for websites
  4. Itā€™s a trusted third party
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#372
  1. It is a cryptographic link of a public key with the entity who owns it.
  2. The one is part of the other. The public key is what the network interacts with, but the digital certificate can be included in the key.
  3. Used to initialize secure SSL connections
  4. Trusted 3rd parties in the contect of PKI
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#373

  1. What is a digital certificate?
    It is a cryptographic link that connects the public key to its owner.

  2. What is the difference between a digital certificate and a public key?
    The digital certificate holds more information including the public key and its issuer and owner

  3. What is the most common use case for digital certificates?
    They are used for securing SSL connections between web browsers and web servers

  4. What is a certificate authority?
    A trusted 3rd party that issues digital certificates

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#374

  1. A digital certificate, also known as a public key certificate, is used to cryptographically link ownership of a public key with the entity that owns it. Digital certificates are for sharing public keys to be used for encryption.

  2. A public key depends on key pairs. A private key which is used by its owner for signing and decrypting data, second a public key which is used for encryption of data which is sent publicly by the owner or authentication of the certificate holders signed data. The digital certificate enables entities to share their public key in a way that can be authenticated.

  3. Typically used to provide assurance through SSL connections between web browsers and servers. This ensures no bad actors have modified the data being shared.

  4. They are considered trusted third party entities.

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#375

  1. Aka: public key certificate is used to cryptographically link a public key with whatever entity owns it.

  2. A digital certificate is used to tie a public key to its owner, a public key is part of a private / public key pair used to cryptographically authenticate transactions or data from the key pair. Namely the public key is the otward facing component of the pair.

  3. initalizing secure SSL connections between web browsers and web servers.

  4. A CA is considered a trusted thrid parties in the context of PKIā€™s

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#376
  1. A digital certificate is used to cryptographically link ownership of a public key with the owner.
  2. A digital certificate comprises a public key being certified, identification about the owner of the public key, metadata, and a digital signature of the public key.
  3. Encryption: for making secure SSL connections between browsers and servers.
  4. Certificate authorities are trusted third parties in the context of public key infrastructure.
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#377

  1. What is a digital certificate?
    its a certificate with a public key where the intention is to encrypt communications (usually through an unsecure network) with a backend (who owns a private key) so that the backend can unencrypt them and ensure the communication is coming from the owner of that certificate , so its trusted.

  2. What is the difference between a digital certificate and a public key?
    The digital certifiate has a public key inside , so the digital certificate is used to share this he public key that is used to authenticate the owner of the certificate

  3. What is the most common use case for digital certificates?
    Encrypting communications over a non-trusted network

  4. What is a certificate authority?
    Trusted third parties that issue certificate. Usually those 3rd parties are trusted by most of the browsers by default so public keys are already included

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#378

What is a digital certificate?
Used to cryptographically link ownership of a public key with the entity that owns it.

What is the difference between a digital certificate and a public key?
Each certificate contains a public key which is used for encryption of data sent to the public key owner or authentication of the certificate holderā€™s signed data. Each certificate also contains a private key which is used for signing and decrypting

What is the most common use case for digital certificates?
ļ»æI nitializing secure SSL connections between web browsers and web servers.

What is a certificate authority?
A trusted 3rd party for issuing digital certificates with respect to public key infrastructure

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#379

  1. A digital certificate is used to cryptographically link ownership of a public key with the entity that owns it. Digital certificates are for sharing public keys to be used for encryption and authentication.

  2. Digital certificates include the public key being certified, identifying information about the entity that owns the public key, metadata relating to the digital certificate and a digital signature of the public key created by the issuer of the certificate.

  3. Digital certificates are used in public key cryptography functions; they are most commonly used for initializing secure SSL connections between web browsers and web servers. Digital certificates are also used for sharing keys to be used for public key encryption and authentication of digital signatures.
    Digital certificates are used by all major web browsers and web servers to provide assurance that published content has not been modified by any unauthorized actors, and to share keys for encrypting and decrypting web content. Digital certificates are also used in other contexts, both online and offline, for providing cryptographic assurance and privacy of data.

  4. Certificate Authorities (CAs) are considered trusted third parties in the context of a Public Key Infrastructure (PKI); using a trusted third party to issue digital certificates enables individuals to extend their trust in the CA to the trustworthiness of the digital certificates that it issues.

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#380

A digital certificate, also known as a public key certificate, is used to cryptographically link ownership of a public key with the entity that owns it

In public-key cryptography digital signatures are generated using algorithms (hashing) for signing of data, with the result that a recipient can confirm that the data was signed by the holder of a particular public key and wash not changed. But digital certificates themselves are signed digitally and they are not as trustless as a public key

1 use case is for securing SSL connections between web browsers and web servers.

a trusted third party.

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#381
  1. Itā€™s a public key certificate used to cryptographically link ownership of a public key with the entity that owns it.
  2. Digital certificate contains more information. It includes the public key being certified, includes the information which entity owns the public key, metadata of digital certificate and a digital signature of the public key created by the issuer of the certificate.
  3. To initialize secure SSL connections between web browsers and web servers. Sharing keys to be used for public key encryption, authentication of digital signatures.
  4. Trusted third party that issues digital certificates. This enables individuals to extend their trust in the certificate authority to the trustworthiness of the digital certificates that it issues.
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