Digital Certificates - Reading Assignment

Blockchain Business Course
#322

  1. What is a digital certificate?
    A digital certificate is also known as a public key certificate and is used to cryptographically link ownership of a public key with the organization, or company, that owns it.

  2. What is the difference between a digital certificate and a public key?
    Digital certificates are used for sharing public keys which in turn are used for encryption and authentication. Digital certificates include the public key, which depend on key pairs. A private key held by the owner and a public key, which is used for encryption of data being sent.

  3. What is the most common use case for digital certificates?
    Digital certificates are used in public key cryptography functions and are commonly seen in securing SSL connections between web browsers and web servers to give assurance that no unauthorized modifications have occurred.

  4. What is a certificate authority?
    Certificate Authority, or CA, are trusted third parties utilized to issue digital certificates. According to the article, utilizing a CA further extends the trust in the digital certificate being issued.

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#323
  1. What is a digital certificate?
    A digital certificate is a cryptographic public key used to verify ownership of a public key by an entity [it links pubkey to it’s owner].
  2. What is the difference between a digital certificate and a public key?
    A public key is part of a digital cetificate.
  3. What is the most common use case for digital certificates?
    Primarily they are used to create secure connections between web browsers and web servers using SSL.
  4. What is a certificate authority?
    CA’s are trusted third parties that create digital certificates for entities.
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#324

1.It is a digital passport giving certain rights to users to perform actions within a digital domain
2. Public key is for sending encrypted data and a digital certificate is an authorization to be able to send and receive data.
3. To safely send data between entities an to be able to check if data has been altered
4. An organization that validates persons and authorizes digital certificates and public keys to users.

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#325
  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. A digital Certificate contains more information than a public key. It usually contains info regarding the user that owns the public key along with a digital signature.
  3. Digital certificates are used to ensure content on the blockchain is only published by those who have the authority to do so.
  4. Digital certificates are typically issued by a certificate of authority (CA). These are trusted third parties.
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#326
  1. What is a digital certificate?

A digital certificate, is a digital fingerprint that is used to certify that the data in question has not been tampered with by an unauthorised 3rd party, or that the claimant is who he claims he is (encryption VS authentication)

  1. What is the difference between a digital certificate and a public key?

A public key is part of the cryptographic algorithm used to implement a digital certificate

  1. What is the most common use case for digital certificates?

Encryption & authentication

  1. What is a certificate authority?
    A CA is a trusted 3rd party entity, entrusted with the function of issuing digital certificates
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#327

  1. Also Known as a public key certificate owns by a specific entity

  2. digital certificates has more information than just a public key.

  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.

  4. 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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#328
  1. What is a digital certificate?

Answer: 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.

  1. What is the difference between a digital certificate and a public key?

Answer: Public key cryptography enables a number of different functions, including both encryption and authentication. A digital signature is another one of those functions enabled by public key cryptography; 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.

A digital certificate is the authentication proof from a Certificate Authority

  1. What is the most common use case for digital certificates?

Answer: 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.

  1. What is a certificate authority?

Answer: CAs are considered trusted third parties in the context of a PKI (Public Key Infrastructure)

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#329

  1. What is a digital certificate?
    . A digital certificate is used to cryptographically link the 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 digital certificate shares public keys, a public key encrypts data.

  3. What is the most common use case for digital certificates?
    A digital signature that depends on a public key shared by a digital certificate to be trusted.
    It can also be used to securing SSL connections between web browsers and servers.

  4. What is a certificate authority?
    CA (Certificate Authority) is a trusted third party that issues digital certificates in the Public Key Structure (PKI) context

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#330
  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.
  2. What is the difference between a digital certificate and a public key?
    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.
  3. What is the most common use case for digital certificates?
    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.
  4. What is a certificate authority?
  5. Most digital certificates are issued by a certificate authority. CAs are considered trusted third parties.
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#331
  1. A digital certificate cryptographically links ownership of a public key to an entity.
  2. A digital certificate has more information than just the public key.
  3. A digital certificate is commonly used to validate that published content has not been modified by unauthorized enities.
  4. Certificate Authority is a trusted third party that verifies digital certificates.
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#332
  1. A digital certificate is the link between the identity and the public key.
  2. Public keys are used to encrypt the message and the digital certificate is the signature that certifies the public key belongs to the verified entity.
  3. SSL certificates are a very common implementation of digital certificates.
  4. Certificate authority is the entity that issues digital certificates.
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#333

Response:

  1. A digital certificate is a public key that is linked cryptographically by the entity that owns it.
  2. The public key is a part of the DC; I don’t believe there are differences in this case. It contains the info of who owns the public key & the metadata of the DC.
  3. Establishing a secure SSL connection between user and the web is one of the common uses of DC’s.
  4. A trusted 3rd party issuer of DC’s is a certificate authority.
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#334
  1. What is a digital certificate?
    A digital certificate 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 digital certificate differs from a public key in that it is broader. 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. What is the most common use case for digital certificates?
    Most commonly used for initializing secure SSL connections between web browsers and web servers.
  4. What is a certificate authority?
    A trusted third party to issue digital certificates that enables individuals to extend their trust in the CA to the trustworthiness of the digital certificates that it issues.
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#335

  1. A digital certificate is an electronic document used to prove the ownership of a public key. The certificate includes information about the key, information about the identity of its owner (called the subject), and the digital signature of an entity that has verified the certificate’s contents (called the issuer). If the signature is valid, and the software examining the certificate trusts the issuer, then it can use that key to communicate securely with the certificate’s subject.

  2. The difference between the digital certificate and the public key is that of ownership. The digital certificate is proof that the public key which is used belongs to the certificate holder.

  3. Digital certificates are most commonly used for initializing secure SSL connections between web browsers and web servers.

  4. A certificate authority is a trusted third party which issues digital certificates. They are also responsible for maintaining up-to-date revocation information about certificates they have issued.

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#336
  1. Digital certificates are used to link a public key with its user for the purpose of authentication and encryption. It is usually issued by a third party
  2. Public key infrastructure gives each user a public key which is used to encrypt information in conjunction with the private key. The digital certificate is used to authenticate and identify the owner of the public key, providing assurance that published content has not been modified by any unauthorized actors.
  3. Digital certificates are commonly used for initializing secure connections between web browsers and web servers, and for authentication of digital signatures
  4. Certificate authority is a third party that issues digital certificates so that two parties using a permissioned database don’t have to trust each other with the power to issue these crucial authentication measures.
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#337
  1. What is a digital certificate?
    Digital certificates are for sharing public keys to be used for encryption
  2. What is the difference between a digital certificate and a public key?
    Digital certificates include the public key being certified, identifying information about the entity that owns the public key. The digital certificate enables entities to share their public key in a way that can be authenticated.
  3. What is the most common use case for digital certificates?
    I dont know if ut is the most common use case, but in the article they mentioned this one: 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
  4. What is a certificate authority?
    They issue the digital certificates, they are considered a trusted third party in the context of PKI
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#338
  1. What is a digital certificate?
    Digital certificate links the ownership of public key and the owner.
  2. What is the difference between a digital certificate and a public key?
    Public key is typically used to confirm the unique owner of the transaction / node / entity signing a transaction, while the digital certificate includes public key and it can be used to decrypt information on the receiver end.
  3. What is the most common use case for digital certificates?
    The digital certificates can be used to confirm the the transferred information has not been tampered after it has been signed by the original owner of information.
  4. What is a certificate authority?
    Certificate authority is a trusted third party for issuing digital certificate
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#339

  1. A digital certificate, or a public key certificate, cryptographically links a public key with the public key’s owner.

  2. A public key provides authenticating information.

A digital certificate includes not only the public key, but also public key owner identification, metadata surrounding the certificate (e.g. date of issue) and the digital signature of the public key.

  1. The most common use case for digital certificates is to intialize secure SSL ( secure sockets layer ) connections between web browsers and web servers.

  2. A certificate authority ( CA ) is a trusted 3rd party issuer of digital certificates. Their presence allows users of their certificates access to a wider array of entities than had an individual user/entity chose to create their own PKI ( public key infrastructure ) .

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#340
  1. What is a digital certificate?
    A public key certificate for sharing public keys to be used for encryption and authentication.
  2. What is the difference between a digital certificate and a public key?
    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 user of the certificate.
  3. What is the most common use case for digital certificates?
    Initializing secure SSL connections between webbrowsers and web servers and for sharing keys to be used for public key encryption and authentication of digital signatures.
  4. What is a certificate authority?
    A tusted third party in the context of a public key infrastructure.
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#341

  1. What is a digital certificate?
    A digital certificate is used to verify ownership of a public key

  2. What is the difference between a digital certificate and a public key?
    A public key is a numerical value used to encrypt data. A digital certificate cryptographically links ownership of the key with the owner. Digital certificates may include public keys as well as a digital signature and metadata.

  3. What is the most common use case for digital certificates?
    They are used by web servers and browsers to authenticate over the internet

4.What is a certificate authority?
It is the entity that issues digital certificates.

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