Overview#

Commitment Scheme is a Cryptographic Primitive that allows one to commit to a chosen value (message) while keeping it hidden to others, with the ability to reveal the committed value later.

Commitment Scheme are designed so that a party cannot change the message after they have committed to it: that is, Commitment Schemes are binding.

Commitment Schemes have important applications in a number of cryptographic protocols including secure coin flipping, Zero-knowledge proofs, and secure computation.

Commitment Schemes MUST have two properties:

• Hiding - Bob shouldn't be able to figure out the Message from the commitment.
• Binding (Second Preimage Resistance) - The Alice shouldn't be able to change the Message after she made the commitment.

More Information#

There might be more information for this subject on one of the following:

• Cryptographic Primitive

---

• [#1] - Commitment_scheme - based on information obtained 2018-08-08
• [#2] - Commitment schemes - based on information obtained 2018-08-08