Digital Certificates - Reading Assignment

[rom]

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.

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 issuer of the certificate.

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

Initializing secure [SSL] connections between web browsers and web servers.

4. What is a certificate authority?

CAs are trusted third parties in the context of a PKI.

[FunsyH]

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. 1. Digital certificate enables sharing of public key and that can be authenticated. Public key is used for signing and encrypted messages that can only be read by a private key holder. Both keys belong to the same entity.

3. To provide assurance that published content has not been modified by any unauthorized actors, and to share keys for encrypting and decrypting content.

4. trusted third parties in the context of a Public Key Insfrasctructure that can issue digital certificates.

[cm006]

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.
2. What is the difference between a digital certificate and a public key?
   A public key is cryptographic data that is based on the key value pair concept (public and private key). A digital certificate verifies that an entity is the owner 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?
   A trusted third party that issues digital certificates.

[c1cag1b3]

1. Cryptographical link of ownership of a public key with the entity that owns it, for encryption and authentication.
2. Digital certificates are products of encrypted information of owners public and private keys.
3. Most commonly used for initializing secure SSL connections between web browsers and web servers.
4. Thrusted third party authority which issue digital certificates.

[RayUtik]

1. Shared public keys to be used for encryption and authentication
2. The main difference is that the former is a certification or electronic document issued by a Certification Authority (trusted third party) that links a person with a public key and confirms his or her identity. This allows you to carry out certain processes and procedures online, including signing documents electronically.
3. SSL connection between web browser and web services
4. Trusted third party that issue digital certificates

[Guavajelly]

1). A digital certificate is for sharing public key for use for encryption and authentication.

2). In cryptography, a public key is a large numerical value that is used to encrypt data and a digital certificate includes a certified public key, information about the entity that owns the public key, and a digital signature of the public key created by the issuer of the certificate.

3). Digital certificates are commonly used by web browers and web servers to provide assurance that content that is being published has not been compromised by unauthorized users. Digital certificates also share keys for encrypting and decrypting web content.

4). A certificate authority is a third party that issues a digital certificate.

[Zinar6]

1. A digital certificate is a public key.
2. A certificate derives from the private key to openly send and receive data. A signature is a verification that you have access to the public key. Through a hashing algorithm the hash of your private key matches the public key and you use this to sign the data you send.
3. The common use cases for digital certificate are privacy and assurance of data.
4. Certificate authorities are trusted third parties in the state of public key infrastructure.

[CryptoKnight84]

1, Digital certificates link public keys to their intended users by authenticating the intended user via the digital signature of a trusted certificate issuing authority (CA).
2, The digital certificate includes a public key, but also metadata and a CA digital signature vouching for the user of the key.
3, Initializing secure SSL connections between web browsers and servers.
4, A trusted 3rd party mediating the connection and insuring that the identity of receiver of the public key.

[steve]

Q1, It is a process that uses a cryptographic link to prove ownership of a public key with the entity that owns it.
Q2, A digital cert is for sharing public keys to be used for encryption and authentication. A public key is used for encryption of data sent to the public key owner.
Q3, They’re most commonly used for SSL connections between a web browser and web servers. Also for sharing keys to be used for the public encryption and authentication of digital signatures.
Q4, It’s a trusted third party that issues digital certificates in the context of a PKI, public key infrastructure.

[Alex_L]

What is a digital certificate?

Digital certificate is used to link, authenticate, Identify the owner in the digital world.

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

A Digital certificate identifies the user sending the message the public key is the encryption of the digital item.

What is the most common use case for digital certificates?

Common use case is to identify the persons, permissions, and assurance of the correct party receiving or sending data.

What is a certificate authority?

It is a trusted third party that issues and authenticates public keys as part of the public key infrastructure.

[jelle_van_der_meer]

1. What is a digital certificate?
A digital certificate is also known as a public key certificate. This way a public key is cryptographically linked to the ownership of the public key that an entity owns. And can be accessed with the private key that person owns.

2. What is the difference between a digital certificate and a public key?
With a digital certificate, the public key is being certified. This means that the metadata from the certificate is linked to the owner/entity of that public key. And a normal public key is not linked to a specific person.

3. What is the most common use case for digital certificates?
Digital certificates are most used in web browsers and web servers to provide assurance that the published content has not been modified by anyone.

4. What is a certificate authority?
This is usually a company that issues these certificates so-called CA (Certificate Authority) which are considered trusted third parties.

[Andycoins]

1. public key certificate , used to cryptographically link ownership of a public key with the entity/person that owns it to be used for encryption and authentication

2. digital certificate is the secure link which connects the public key to the entity related and authenticates public key , public key is address shared to other entities without compromising sensitive metadata used in PKI

3. initializing secure SSL connections between web browsers and web servers, also for sharing keys for public key encryption and authentication of digital signatures.

4. a trusted third party in context of PKI,

[Crypto-Dylan]

1. What is a digital certificate?
   A digital 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?
   The digital certificate contains the public key and is a declaration of who owns the of the public key. The public key is the “cryptographic data” that is used when performing cryptographic functions.
3. What is the most common use case for digital certificates?
   To provide assurance that published content has not been modified by any unauthorizes actors, and to share keys for encrypting and decrypting content.
4. What is a certificate authority?
   Ironically for a trusted third party.

[Tito_RuizG]

1. Digital 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, metadata relating to the digital certificate and a digital signature of the public key the certificate issuer created

3. Most commonly used 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. It is an authority that issues certificates. A trusted 3rd party that authenticates a digital certificate

[MichaelW]

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.

2. What is the difference between a digital certificate and a public key?
   The digital certificate enables entities to share their public key so it can be authenticated.

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

4. What is a certificate authority?
   The vast majority of digital certificates are issued by a certificate authority (CA). CAs are considered trusted third parties.

[porte01]

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 of the public key the certificate issuer created.

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

Digital certificates are used in public key cryptography functions most commonly for initializing Secure Sockets Layer (SSL) connections between web browsers and web servers. Digital certificates are also used for sharing keys used for public key encryption and authentication of digital signatures.

4. What is a certificate authority?

Trusted third parties in the context of a PKI – issue most digital certificates. Using a trusted third party to issue digital certificates enables individuals to extend their trust in the CA to the digital certificates it issues.

[theosebagh]

Digital Certificates – Questions

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?

A digital certificate cryptographically links a public key with the entity that owns it.

Public key cryptography depends on key pairs: one is a private key to be held by the owner and used for signing and decrypting, and the other is 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. What is the most common use case for digital certificates?

Digital certificates are used in public-key cryptography functions most commonly for initializing Secure Sockets Layer (SSL) connections between web browsers and web servers. Digital certificates are also used for sharing keys used for public-key encryption and authentication of digital signatures.

All major web browsers and web servers use digital certificates to provide assurance that unauthorized actors have not modified published content and to share keys for encrypting and decrypting web content. Digital certificates are also used in other contexts, online and offline, for providing cryptographic assurance and data privacy.

Digital certificates that are supported by mobile operating environments, laptops, tablet computers, internet of things (IoT) devices, and networking and software applications help protect websites, wireless networks, and virtual private networks.

Digital certificates are used in the following ways:
• Credit and debit cards use chip-embedded digital certificates that connect with merchants and banks to ensure that the transactions performed are secure and authentic.
• Digital payment companies use digital certificates to authenticate their automated teller machines, kiosks, and point-of-sale equipment in the field with a central server in their data center.
• Websites use digital certificates for domain validation to show they are trusted and authentic.
• Digital certificates are used in secure email to identify one user to another and may also be used for electronic document signing. The sender digitally signs the email, and the recipient verifies the signature.
• Computer hardware manufacturers embed digital certificates into cable modems to help prevent the theft of broadband service through device cloning.

4. What is a certificate authority?

Certificate authorities (CAs) - considered trusted third parties in the context of a public key infrastructure (PKI) - issue most digital (security) certificates. Using a trusted third party to issue digital certificates enables individuals to extend their trust in the CA to the digital certificates it issues.

Source: https://searchsecurity.techtarget.com/definition/digital-certificate

[BlissBang]

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. 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 the certificate issuer created.

• Credit and debit cards use chip-embedded digital certificates that connect with merchants and banks to ensure that the transactions performed are secure and authentic.
• Digital payment companies use digital certificates to authenticate their automated teller machines, kiosks and point-of-sale equipment in the field with a central server in their data center.
• Websites use digital certificates for domain validation to show they are trusted and authentic.
• Digital certificates are used in secure email to identify one user to another and may also be used for electronic document signing. The sender digitally signs the email, and the recipient verifies the signature.
• Computer hardware manufacturers embed digital certificates into cable modems to help prevent the theft of broadband service through device cloning.

4. Certificate authorities are considered trusted third parties in the context of a PKI – issue most digital certificates.

[Lennart_Lucas]

1. A cryptographic link ownership connecting 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, metadata relating to the digital certificate and a digital signature of the public key the certificate issuer created. Meanwhile a public key is used to encrypt / decrypt information alongside a private key.
3. It’s to ensure someone is who they say they are. For instance when connecting with banks or online stores, it’s important to know that the connection is authentic.
   4.It’s a thrusted third party providing certificates.

[Acex13]

1. What is a digital certificate?
   AKA a “public key certificate”, it cryptographically links ownership of a public key with the entity that owns it, for sharing public keys to be used for encryption and authentication.

2. What is the difference between a digital certificate and a public key?
   Public keys are just one component of digital certificates. Digital certificates enable entities to share their public key to be authenticated. The public key is used for encrypting data sent to a public key owner, which can then be decrypted using their private key. Digital certificates include the public key being certified, identifying info about the entity that owns the public key, metadata relating to the digital certificate and a digital signature of the public key the certificate issuer created.

3. What is the most common use case for digital certificates?
   The most common use case for digital certificates is ensuring content published to web browsers is secure and authentic (unmodified by unauthorized actors) via public key cryptography. This is the initializing of Secure Sockets Layer connections between web browsers and servers.

4. What is a certificate authority?
   A certificate authority is a trusted entity that issues SSL (Secure Sockets Layer) certificates.