SSL Complete Guide 2021: HTTP to HTTPS - Exploring Certificate of Instagram

The video tutorial covers encryption algorithms, PKI, and certificate details. It explains the structure and components of website certificates, focusing on instagram.com. The tutorial delves into certificate chains, validity, issuer information, and signature creation. It also discusses public keys, certificate extensions, and fingerprints, providing a comprehensive understanding of digital certificates and their role in secure communications.

What is the primary purpose of symmetric encryption algorithms?

• To use different keys for encryption and decryption

• To encrypt data using a single key for both encryption and decryption

• To generate hash values

• To create digital signatures

What role does the root certification authority play in the chain of trust?

• It issues certificates directly to websites

• It acts as the root entity and does not usually issue certificates

• It verifies the identity of users

• It encrypts data for secure transmission

What is a wildcard common name in a certificate?

• A name that is unique to a single domain

• A name that is used for encryption

• A name that is used for decryption

• A name that applies to multiple subdomains

What is the role of the intermediate certification authority?

• It verifies the identity of the root CA

• It encrypts data for secure transmission

• It acts as a bridge between the root CA and the end entity

• It directly issues certificates to end-users

Which organization is listed as the owner of the certificate for instagram.com?

• Twitter

• Microsoft

• Google

• Facebook

What is the purpose of a signature algorithm in a certificate?

• To verify the identity of the certificate owner

• To generate a public key

• To create a digital signature for the certificate

• To encrypt the entire certificate

How is a digital signature created for a certificate?

• By using a symmetric key to encrypt the certificate

• By hashing the certificate data and encrypting the hash with a private key

• By signing the certificate with a public key

• By encrypting the certificate with a public key

What does the 'not valid before' and 'not valid after' fields indicate in a certificate?

• The encryption strength of the certificate

• The validity period of the certificate

• The issuer of the certificate

• The public key size

What is the significance of the public key in a certificate?

• It is used to encrypt data sent to the certificate owner

• It is the same as the private key

• It verifies the certificate's authenticity

• It is used to decrypt data sent to the certificate owner

What information can be found in the subject alternative name section of a certificate?

• The issuer's public key

• The validity period of the certificate

• The list of DNS names for which the certificate is valid

• The encryption algorithm used