Confidential Transactions 机密交易

(ri1*G + vi1*H) + (ri2*G + vi2*H) = (ro3*G + vo3*H)

An input or output value in a transaction can then be expressed as:

C = r*G + v*H

Where:

• r _is a private key used as a blinding factor, _G _is an elliptic curve and their productr*Gis the public key for _r _on _G
• _v _is the value of an input or output and _H _is another elliptic curve.

Neither v nor r can be deduced, leveraging the fundamental properties of Elliptic Curve Cryptography.r*G + v*His called a_Pedersen Commitment.

机密交易包含了 Pedersen Commitment。前者是一个公式，后者只是这个公式里的一个变量。