Digital Certificates - Reading Assignment

[flrnblock]

1 - Digital certificates prove the authenticity of a device, server, or user through the use of cryptography and the public key infrastructure

2 - Digital certificate is the encrypted output containing user information and private key

3 - 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

4 - It’s the entity that stores, signs and issues digital certificates

[magicrypto]

1.what is a digital certificate?
Is a cryptographic link ownership of a public key with the entity that it owns.
2.what is the difference between a digital certificate and a public key?
digital certification contains also a public key and excists out of different components.
Digital certificates are used in public key cryptography functions most commonly for initializing Secure Sockets Layer 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.
public key is:
Public key cryptography depends on key pairs: one private key to be held by the owner and used for signing and decrypting and one public key that can be used for encrypting data sent to the public key owner or authenticating the certificate holder’s signed data.
3.what is the most common use case for digital certificates?
Digital certificates are mostly used by web browsers & servers to provide assurance that published content has not been modified by unauthorized actors & for sharing the keys for encrypting & decrypting web content.
4.what is a certificate authority?
third party that issues digital certificates.

[Selim]

Hi everyone,

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 the certificate issuer created.
3. Encrypting communications and authentication
4. Trusted third parties in the context of a Public Key Infrastructure

[Mroman]

1.Also known as public key certificate, it is used to prove ownership on a cryptography form.
2. Digital certificate include the public key being certified, identifying information about the person that owns the public key. Public key cryptography depends on key pairs; one to be held by owner and uses for signing and decrypting, and one a public key that can be used for encryption.
3. Credit cards and debit cards use chip digital certificate to communicate between merchants and banks. Websites use it for domain validations. To secure email to identify users.
4. CAS are trusted third parties that can be validators.

[gunnarseay]

1.) A digital certificate is a cryptographic link of a public key ownership to an entity who owns it. Digital certificates are mainly for sharing of public keys to be used for encryption and authentication.
2.) The difference between a digital certificate and a public key is that a public key requires a private key to be held by the public key recipient for the use of signing and decrypting (as well as another public key used by the owner for encrypting data sent to said recipient, or authenticating the certificate owner’s signed data). A digital certificate, however, enables entities to share their public key initially so it can be authenticated.
3.) The most common use case for digital certificates are in public key cryptography functions that initialize Secure Socket Layer (SSL) connections between web browsers and web servers.
4.) A certificate authority is a trusted third party in the context of private key infrastructures and are the ones who issue most digital certificates. By the use of this third party in the issuance of digital certificates, individuals can extend their trust into these certificate authorities.

[cotts31]

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?
   Public key cryptography depends on key pairs: one private key to be held by the owner and used for signing and decrypting and one public key that can be used for encrypting data sent to the public key owner or authenticating the certificate holder’s signed data. 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?
   Digital certificates are used in public key cryptography functions most commonly for initializing Secure Sockets Layer (SSL) connections between web browsers and web servers .

4. What is a certificate authority?
   A certificate authority is a an organization that acts to validate identities and bind them to cryptographic key pairs with digital certificates.

[Capig]

1. What is a digital certificate?
   A. 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. Digital key is also known as 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.
3. What is the most common use case for digital certificates?
   A. Initializing Secure Sockets Layer (SSL) connections between web browsers and web servers.
4. What is a certificate authority?
   A. A trusted party that issues a digital security certificate.

[HolistikBit]

• What is a digital certificate?
  A digital artifact that authenticates the owner of a public key and its private key counterpart. The reason to trust the digital certificate is based on trusting the issuer (a CA).

• 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.

• What is the most common use case for digital certificates?

1. To retrieve the public key of, and information about an entity and verify this ownership. This implies functionality of a public/private key pair, e.g.

• privacy (sending messages only readable by the communicating parties) and

• message integrity (ensuring that messages stay intact, not modified by any third party).

• What is a certificate authority?
  An entity that issues certificates and provides trust, i.e. if you’re trusting the CA, you trust the certificates they store. Technically, a CA is endorsing ownership of a public key and the accompanied identity information etc. by signing the corresponding digital certificate with its own private key. If you trust the that the CA’s owns the public key, you’re trusting the digital certificate. This could be chained, having a “parent CA” signing the public key ownership of the child CA in another digital certificate. The CA at the end of the chain, the anchor of trust, is called the root CA.

[azeque]

1. What is a digital certificate?
   A proof of ownership of a public key by an entity.

2. What is the difference between a digital certificate and a public key?
   Digital certificate contains public key information, metadata, digital signature, whereas public keys are used to authenticate data sent/received.

3. What is the most common use case for digital certificates?
   Secure SSL connection between web servers and web browsers.

4. What is a certificate authority?
   Trusted third party entity that issues digital certificates.

[Mohammed_Al_Arab]

1. A digital certificate links a public key with the authorized owner of that public key.
2. A digital certificate contains the public key and specifies the owner. The public key is the key used for cryptographic functions
3. Digital certificates verify the ownership of a public key and information about the entity that owns it.
4. Certificate Authority (CA) is a trusted part of Public Key Infrastructure (PKI) that issues digital certificates after thorough verification.

[zlr1984]

1. What is a digital certificate?

A digital certificate is a proof of ownership of a public key by an entity, thru cryptography linking the public key to the entity that owns it.

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

The Digital Certificate includes 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,

A Public Key is used for encrypting data sent to the public key owner or authenticating the certificate holder’s signed data.

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

Digital certificates are most commonly used for initializing Secure Sockets Layer (SSL) connections between web browsers and web servers.

4. What is a certificate authority?

A certificate authority is a trusted third party entity that issues digital certificates.

[PaulS96]

1. What is a digital certificate?
   proof of ownership on a public key.
2. What is the difference between a digital certificate and a public key?
   a digital certificate is held by the owner and is used for signing and decrypting. the public key is to send and receive data.
3. What is the most common use case for digital certificates?
   credit and debit cards, domain validation, SSL for connecting web servers and web browsers.
4. What is a certificate authority?
   a trusted third party issuing certificates and validating identities.

[alhabi]

1.) A digital certificate includes certification of a public key, identifying information about the entity that owns the public key, metadata relating to the digital certificate and a digital signature of the public key.
A digital certificate is used to cryptographically link ownership of a public key with the entity that owns it.
2.) The digital certificate only certifies the public key, in order to make it trustworthy in a system of incomplete trustlessness. The public key itself, however, is derived from the private key and allows encryption of data, which can then be decrypted with the private key. Hence, the private key is private, because otherwise, the purpose of encryption is defeated. The public key is public, in order to allow other parties to send encrypted data, which only the holder(s) of the private key can decrypt.
3.) Initializing SSL connections between web browsers and web servers.
4.) The trusted party or entity, that issues a digital certificate.

[MrGanD]

1. What is a digital certificate?

A digital certificate (AKA 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?

Public key is a cryptographic key that can be obtained and used by anyone to encrypt messages intended for a particular recipient while 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?

Most common use case for digital certificates is initializing Secure Sockets Layer (SSL) connections between web browsers and web servers.

4. What is a certificate authority?

Certificate authorities (CAs) are considered trusted third parties in the context of a public key infrastructure (PKI) that issue most digital certificates.

[CipherGrind]

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

What is the difference between a digital certificate and a public key?
A public key depends on key pairs. The public key can be used for encrypting data sent to the public key owner or authenticating the certificate holder’s signed data. And then the private key held by the owner is used for signing and decrypting. The digital certificate enables entities to share their public key so it can be authenticated.

What is the most common use case for digital certificates?
– Securing domains with SSL.
– Credit Card Chips
– Digital payment systems
– Secure email

What is a certificate authority?
Trusted 3rd parties, in the context of a PKI Public Key Infrastructure, that issue most digital certificates. Examples are web domain and hosting companies such as Digicert, Comodo, GoDaddy, BlueHost, etc…

[arminoovic]

*Digital Certificate - or Public Key Certificate - cryptographically links ownership of the public key with the entity that owns it. The certificate incorporates among other things - the certified public key, the digital signature of the public key and some other metadata. *

2. Digital Certificates incorporate more metadata than the ‘plain’ public key. The public key is included within the digital certificate.

3. Mostly for establishing secure connections between web browsers and web servers - aiming at sharing keys for encrypting and decrypting web content.

4. A third party which can issue digital certificates.

[aldrin]

1. What is a digital certificate?

Public Key Certificates, an electronic credentials that confirsm the identity of the certificate holder using public and private keys

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

main difference is that a digital certificate validates the sender, and public key is a shared key to validate the sender using the private key(s)

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

sending secured emails, or to etablish secure connections (SSL) to access a system.

4. What is a certificate authority?

an entity that issues the certificate, usually a third party

[gmfaraaz]

A1. A certificates that links a public key to an entity.
A2. Public key is generated through private key and an algorithm. Digital certificates are issued with the combination of public key. the entity information and issuers public key.
A3. For access. identification and authorization
A4. The issuer of certificate.

[ARK]

1. What is a digital certificate?

2. What is the difference between a digital certificate and a public key?
   A public key is the public part of a public-private key pair, used in blockchain. A digital certificate connects the public key with its owner.

3. What is the most common use case for digital certificates?
   among the common uses for this technology are: digital payments, including for debit and credit cards, as well as website and email security.

Blockquote

“Digital certificates include the public key being certified, identifying information about the entity that owns the public key, metadata relating to the digital certificate” " 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, and networking and software applications help protect websites, wireless networks and virtual private networks"

4. What is a certificate authority?
   The trusted entity that gives a digital certificate.

[Vendi]

@filip

• What is a digital certificate?
• What is the difference between a digital certificate and a public key?
• What is the most common use case for digital certificates?
• What is a certificate authority?

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

2. A public key is just the key is used for encryption, while the certificate of the public key is used to verify ownership of it.

3. Protcol encryption such as SSL/TSL certificates, used for websites and emails for example.

4. A third party authority that is able to issue a digital certificate.