Digital Certificates - Reading Assignment

Blockchain Business Course
#222

Excellent answers sir, well documented! Please keep them like that :muscle:

Carlos Z.

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#223

  1. What is a digital certificate?
    It cryptographically links the public key to the entity that created it/ owns it.

  2. What is the difference between a digital certificate and a public key?
    A public key is a one way hash of the private key and is used to encrypt or sign messages. A digital cert contains the public key and links it to its owner.

  3. What is the most common use case for digital certificates?
    To secure SSL, secure sockets layer, between web browsers and web servers.

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

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#224
  1. What is a digital certificate?
    A digital certificate is used to cryptographically link a public key to the owner way of sharing public keys
    Digital certificates can be shared to share public keys which can be used to authenticate and encrypt.
    It contains
  • public key being certified
  • information about the entity who owns the public key,
  • metadata about the digital certificate
  • digital signature of the public key created by the creator of the certificate

  1. What is the difference between a digital certificate and a public key?
    A digital certificate is a method of sharing public keys so that they can be authenticated.
    A public key is a large numerical value used to encrypt data

  2. What is the most common use case for digital certificates?
    Initialising secure connections between a web browser and a web server and also for sharing public keys to be used in encryption and authenication. They are also used by web browsers and serves to verify that published content has not been altered.

  3. What is a certificate authority?
    A trusted third party who issues digital certificates

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#225

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.

What is the difference between a digital certificate and a public key?
A digital certificate holds data and a private key, a digital certificate differs therefore 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.

(A digital certificate shares public keys and a public key encrypts data.)
What is the most common use case for digital certificates?

The vast majority of digital certificates are issued by a certificate authority (CA). Digital certificates are most commonly used for initializing secure SSL connections between web browsers and web servers.

What is a certificate authority?
A certificate authority (CA). CAs are considered trusted third parties

#226

  1. It is a means to proof that one is the owner of sent data. It encrypts data of the sender and allows to authenticate the source of the data to the receiver

  2. The public key actually encrypts the data and authenticates data to the receiver of the data. The digital certificates are used to share the public keys while verifying the owner of the public key.

  3. Ensuring a safe connection between web browser and server. It provides the user with a higher security that the content on the website has not been changed by an unauthorized party.

  4. An entity (3rd party) which provides digital certificates

#227
  1. What is a digital certificate?
    It cryptographically links 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 initializes the secure SSL connection between web browser and server. A public key is for data encryption and authentication.
  3. What is the most common use case for digital certificates?
    The digital certificate provides assurance that published content has not been modified by unauthorized entities.
  4. What is a certificate authority?
    A trusted third party in the public key infrastructure that issues digital certificates.
#228

Excellent answers miss, well documented! Please keep them like that :muscle:

Carlos Z.

#229

  1. What is a digital certificate?
    A digital certificate is an issuance from a central authority used to cyrptographically link a public key with the entity who owns it, so that it may be used for encryption and authentication.

  2. What is the difference between a digital certificate and a public key?
    It appears the main difference between the two is that in order to receive a digital certificate, it needs to be issued by a central authority. Whereas anyone who has encrypted data can issue their own public key.

  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?
    Within the context of digital certificates, a central authority is a trusted third party who issues them.

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#230
  1. What is a digital certificate?
    a public key certificate which is 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?
The pubic key is part of a digital certificate

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

  2. What is a certificate authority?
    the issuer of the digital certificate

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#231

  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. 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. The difference between a digital certificate and a public key is, “The owner of the key pair makes the public key available to anyone, but keeps the private key secret. A certificate verifies that an entity is the owner of a particular public key.”

  3. The most common use case for digital certificates is for initializing secure SSL (Secure Sockets Layer) connections between web browsers and web servers. They are also “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. A certificate authority is a trusted third party in the context of Public Key Infrastructure. This third party would issue digital certificates enabling individuals to extend their trust in the CA to the trustworthiness of the digital certificates that it issues.

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#232

Excellent answers sir, well documented! Please keep them like that :muscle:

Carlos Z.

#233

  1. What is a digital certificate?
    It is public key certificate that ensures ownership and authenticity

  2. What is the difference between a digital certificate and a public key?
    digital certificate can be used to be traced back to owner and public key cant.

  3. What is the most common use case for digital certificates?
    To ensure secure SSL connections are established

  4. What is a certificate authority?
    Issue digital certificates

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#234
  1. A digital certificate is something that is used to verify the link between the public key and the owner of that public key.
  2. A digital certificate links ownership of the public key with the user and enables entities to share pblic keys in a manner that can be authenticcated. On the other hand, the public key is widely disseminated data that encrypts the data itself.
  3. Used by web browsers and servers to authenticate transactions over the internet.
  4. A 3rd party trusted by the network to issue digital certificates.
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#235

[quote=“filip, post:1, topic:6386”]

  • What is a digital certificate?
    A digital certifcate is a certifcate to confirm that the sender is actually the rightful owner of the private key.
  • What is the difference between a digital certificate and a public key?
    A public key is used for encryption and authentication but without the Digital Certificate it would not be guaranteed that the sender is who they say they are.
  • What is the most common use case for digital certificates?
    Providing a secure connection between web browsers and web servers
  • What is a certificate authority?
    A certificate authority is an organisation that does checks to confirm that the sender is the rigtful owner of the public key and they are the ones that issues the digital certicate.
#236

1 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.

2 Public key cryptography enables a number of different functions, including both encryption and authentication.and digital signatures are generated by hashing the data to be signed with a one-way cryptographic hash; the result is then encrypted with the signer’s private key.

3 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 the vast majority of digital certificates are issued by a certificate authority (CA). 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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#237

Excellent answers sir, well documented! Please keep them like that :muscle:

Carlos Z.

#238

What is a digital certificate? A public key certificate that’s used to prove ownership of a public key and it’s owner

What is the difference between a digital certificate and a public key? The digital certificate is used to show ownership and contains the public key. A public key is for encryption

What is the most common use case for digital certificates? Creating secure connections between web browsers and web servers

What is a certificate authority? Trusted third parties that issue certificates in the context of PKI

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#239
  1. What is a digital certificate?
    Confirmation that the sender is the holder of the private key that belongs to the public key
  2. What is the difference between a digital certificate and a public key?
    A public key is the result of a hashing process of a private key, whereas the certificate confirms that an identity is in the ownership of the private key that was hashed to get the public one.
  3. What is the most common use case for digital certificates?
    Client-Server-Infrastructure (https)
  4. What is a certificate authority?
    Trusted third party for issuing certificates (valid relation private-public-key)
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#240

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 certificate enables entities to share their public key in a way that can be authenticated. The public key is the cryptographic data that is used when preforming cryptographic functions.

3: Digital certificates are used to intnitialize secure connections between web servers and web browsers using secure SSL connection

4: Its is the authority able to issue digital certificates

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#241
  1. What is a digital certificate?
    A digital certificate, also known as a public key certificate (PKC) is used to cryptographically link ownership of a public key with the entity that owns it.

Digital Certificates are used for sharing public keys to be used for encryption and authentication.

Digital Certificates include:

i) The Public Key being certified.
ii) Identifying information about the entity that owns the public key.
iii) Metadata relating to the digital certificate.
iv) A digital signature of the public key created by the user of the certificate.

  1. What is the difference between a digital certificate and a public key?
    Public Key Cryptography depends on key pairs: One, a private Key to be held by the owner and used for signing 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 holder’s signed data.
    The digital certificate enables entities to share their public key in a way that can be authenticated.
    The PKI or Public Key infrastructure is the system by which public keys are distributed and authenticated.
    The distribution, authentification and revocation of the digital certificates are the primary purpose of the Public Key Infrastructure (PKI).
  2. What is the most common use case for digital certificates?
    Digital Certificates are used in:
    Public Key Cryptography functions; They are most commonly used for public key encryption and authentfiication of digital signatures.
  3. What is a certificate authority?
    Digital certificates are used by all major web browsers and web servers to provide assurance that published content has not been modified by any unauthorised actors, and to share keys for encrypting and decrypting web content.
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