Method and system for private decentralized forward-secure confidential transactions

A computing apparatus for preserving an anonymity of a recipient of a payment, the computing apparatus comprising:

• a processor;
• a memory;
• and
• a communication interface coupled to each of the processor and the memory,
• wherein the processor is configured to:
• receive, from a payor via the communication interface, first information that relates to an amount of a first payment being made to a first recipient;
• receive, from the payor via the communication interface, second information that relates to a first secret key that corresponds to a first public key associated with the payor;
• receive, from the payor via the communication interface, third information that indicates that a sender has generated a first ciphertext message that relates to the first payment;
• and
• receive, from the payor via the communication interface, fourth information that proves that the amount of the first payment does not exceed an account balance of an account from which the first payment is withdrawn.

A non-transitory computer readable storage medium storing instructions for preserving an anonymity of a recipient of a payment, the storage medium comprising executable code which, when executed by a processor, causes the processor to:

• receive, from a payor, first information that relates to an amount of a first payment being made to a first recipient;
• receive, from the payor, second information that relates to a first secret key that corresponds to a first public key associated with the payor;
• receive, from the payor, third information that indicates that a sender has generated a first ciphertext message that relates to the first payment;
• and
• receive, from the payor, fourth information that proves that the amount of the first payment does not exceed an account balance of an account from which the first payment is withdrawn.