Digital Certificates - Reading Assignment

[Native_Loup]

• What is a digital certificate?
  A digital certificate is commonly known as a public key certificate and is used to distribute and authenticate public keys. The digital certificate is also used to initialize secure SSL connections and verify public key pairs to decrypt digital signatures.

• What is the difference between a digital certificate and a public key?
  A digital certificate enables entities to share public keys in a way that can be authenticated but are not to be trusted unless public keys can be verified. The public key is essentially the private portion/cryptographic data of the pair that validates the certificate.

• What is the most common use case for digital certificates?
  The most common use case for digital certificates are to verify the irrefutable authenticity of identity and ownership of an entity.

• What is a certificate authority?
  Certificate Authority, known as CA’s, are trusted 3rd party entities in the public key infrastructure (PKI). This CA issues certificates and provides trust by endorsing ownership and verifying the pairs.

[Gagnon]

(1) What is a digital certificate? - also known as a public key certificate and 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? - Digital Certificates include the public key and other 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? - distribution, authentication and revocation of digital certificates are the primary purposes.
(4) What is a certificate authority? - generally it is who is able to issue digital certificates. A trusted third party.

[tjourneyinge]

1. What is a digital certificate? It is a public key certificate issued by an authority, used to cryptographically link its ownership with the entity owning it.
2. What is the difference between a digital certificate and a public key? The public key is the one being certified by the digital certificate.
3. What is the most common use case for digital certificates? Digital certificates are used by all major web browsers and 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? This is a trusted third party issuing digital certificates

[Tillo]

1. What is a digital certificate?
   it is a public key 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?
   The Public Key is a part of the data that are authenticated by the digital certificate

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.

4. What is a certificate authority?
   trusted third parties in the context of a public key infrastructure

[paul1]

1. A digital certificate is a kind of electronic document that contains information that links ownership of a public key with its owner. It contains

2. a digital certificate is the overall “container” that contains the public key alongside other ownership details and metadata.

3. SSL communications

4. The third party issuer of the digital certificate.

[Raffaele]

1. What is a digital certificate? A digital certificate or public key certificate is a cryptographical link between a public key and its owner. It’ used for encryption and authentication of digital documents.
2. What is the difference between a digital certificate and a public key? A digital certificate enable an entity to share its public key with the indication that it is the owner of that private key.
3. What is the most common use case for digital certificates? Encryption (i.e. SSL connections) and digital signature.
4. What is a certificate authority? A third part company that issues digital certificates.

[pazzi]

This article is very poor. Has anyone found a better one?
A graphical representation would have been really useful.

[Andreita]

One. Digital certificates are used to cryptographically link owners of public keys with entities that own them. Used to give access to change data in hyper ledger’s.
Two. Public key depends on two pairs. The first is that private keys to be held by owner and used for signing and decrypting. The second is the public key can be used for encryption of data Sent to the public key owner or authentication of certified holders signed data.
Three. Digital certificates are used to ensure that only authorized users can change data and to share keys for encrypting and decrypting the content.

Four. CA Rare trusted third party authorities that issue digital certificates.

[Capaburro]

1. What is a digital certificate?
   It is used to encrypt communication and to make sure that only the users that are allowed to see that communication can decrypt it. This is done by means of public keys and private keys (asymmetric or public key cryptograpy).

2. What is the difference between a digital certificate and a public key?
   The public key is part of a digital certificate and is needed at both ends of the communication to be able to encrypt/decrypt the communication in a fast way (symmetric)

3. What is the most common use case for digital certificates?
   Most commonly used to encrypt communications between webbrowsers and webservices.
   Also to ensure data privacy (online and offline) and authentication

4. What is a certificate authority?
   A CA is a trusted third party that issues the certificates and is part of the PKI (public key infrastructure)

[Capaburro]

If you look in Youtube and search for “digital certificate” you will find good resources. I don’t know if I am allowed to post a link otherwise I would have posted the link.

[Coltrain]

1. What is a digital certificate?

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

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

A digital certificate, usually contains info, like the name of the issuer, or other info about the entity that owns the public key, and has a digital signature that proves the entity owns the public key.

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

To provide assurance that published content has not been modified by any unauthorised actors.

4. What is certificate authority?

CAs are considered trusted third parties.

[msofley]

1. What is a digital certificate?
   A digital certificate is used to link a public key to the entity that owns it.
2. What is the difference between a digital certificate and a public key?
   Each digital certificate has a public key, as well as a private key, however the digital certificate also has other properties which gives certificate holders different permissions such as signing documents, authenticating in websites, etc.
3. What is the most common use case for digital certificates?
   The most common use case for digital certificates is authentication of users on websites using SSL, they are also commonly used for digital signatures of documents as well as user authentication into secure systems (can be used as of the 2 factors of authentication, etc.)
4. What is a certificate authority?
   A CA is a “trusted” certificate authority who issues digital certificates to certificate holders.

[Oded_Ami]

1. A Digital Certificate is an electronic “password” that allows a person, organization to exchange data securely over the Internet using the public key infrastructure (PKI). Digital Certificate is also known as a public key certificate or identity certificate.
2. The signing software by creating a one-way hash ( function that converts one value to another) of the data creates the digital certificate then, this bundle is encrypted with the sender’s private key, and again with the receiver’s 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. 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. That is the authority that issue the digital certificate.

The vast majority of digital certificates are issued by a certificate authority (CA).

[bugiiiii]

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. Public key cryptographydepends 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 holder’s signed data. The digital certificate enables entities to share their public key in a way that can be authenticated
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.
4. a trusted third party to issue digital certificates

[Plamen_Petrov]

1. What is a digital certificate? - enables entities to share their public key in a way that can be authenticated.

2. What is the difference between a digital certificate and a public key? - 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 most commonly used for initializing secure SSL connections between web browsers and web servers.

4. What is a certificate authority? - trusted third parties in the context of a PKI

[MFLittle]

1. What is a digital certificate?

Links ownership of a public key with the entity that owns it.

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

Digital certificates include the public key, metadata relating to the cert and the digital signature of the public key.

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

Initiating SSL connections and ensuring that content has not been modified between server/sender and reciever

4. What is a certificate authority?

Trusted third parties who issue digital certificates

[Goosie]

1. What is a digital certificate?
   Its a digital document, which can be used to prove ownership of a public key. It ussually contains info like the name of the user. Further more it has a digital signature to proof the ownership.

2. What is the difference between a digital certificate and a public key?
   digital certificates shares publickeys
   public keys (has an address you share with others to be able to encrypt data) A public key has no link to a related ownership

3. What is the most common use case for digital certificates?
   SSL connections, be able to browse to pages you can trust because you have setup a connection earliers and received a certificate which able you to get access to a site.

4. What is a certificate authority?
   A Trusted third party organisation which gives the digital certificates to end users.

[paschkka86]

1. Digital certificate is used to cryptographically link ownership of a public key with the entity that owns it.

2. Difference between a digital certificate and a public key:

   • digital certificates include the public key being certified, so its possible to share an authentic public key
   • public key is used for receiving and sending data

3. The most common use case for digital certificates is for initializing secure SSL connections between web browsers and web servers. Also for sharing keys to be used for public key encryption and authentication of digital signatures.

4. What is a certificate authority?
   It´s a trusted third party that issue digital certificates

[mkhuang]

1. What is a digital certificate?
   digital certificate, is a public key certificate
2. What is the difference between a digital certificate and a public key?A digital certificate shares public keys and a public key encrypts data.
3. What is the most common use case for digital certificates?
   to prove that information transmitted to the receiver, has not been tempered before getting to the receiver.
4. What is a certificate authority?**
   Certificate Authority, or CA’s, are considered trusted third parties in the context of a Publick Key Infrastructure; 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.

[dave-dave]

• What is a digital certificate?
  A 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?
  Digital certificates include the public key being certified, identifying information about the entity that owns the public key.

• What is the most common use case for digital certificates?
  Encryptions, authentications and digital signatures.

• What is a certificate authority?
  It is a trusted third party that issues digital certificates.