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Question 26 - Vault Associate 002 discussion

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How many Shamir's key shares are required to unseal a Vault instance?

A.
All key shares
Answers
A.
All key shares
B.
A quorum of key shares
Answers
B.
A quorum of key shares
C.
One or more keys
Answers
C.
One or more keys
D.
The threshold number of key shares
Answers
D.
The threshold number of key shares
Suggested answer: D

Explanation:

Shamir's Secret Sharing is a cryptographic algorithm that allows a secret to be split into multiple parts, called key shares, such that a certain number of key shares are required to reconstruct the secret. The number of key shares and the threshold number are configurable parameters that depend on the desired level of security and availability. Vault uses Shamir's Secret Sharing to protect its master key, which is used to encrypt and decrypt the data encryption key that secures the Vault data. When Vault is initialized, it generates a master key and splits it into a configured number of key shares, which are then distributed to trusted operators. To unseal Vault, the threshold number of key shares must be provided to reconstruct the master key and decrypt the data encryption key.This process ensures that no single operator can access the Vault data without the cooperation of other key holders.Reference: https://developer.hashicorp.com/vault/docs/concepts/seal4, https://developer.hashicorp.com/vault/docs/commands/operator/init5, https://developer.hashicorp.com/vault/docs/commands/operator/unseal6

asked 18/09/2024
Yedron Rojas Acosta
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