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arXiv · 1807.10554

Coloured Ring Confidential Transactions

Felix Engelmann·Frank Kargl·Christoph Bösch
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Abstract

Privacy in block-chains is considered second to functionality, but a vital requirement for many new applications, e.g., in the industrial environment. We propose a novel transaction type, which enables privacy preserving trading of independent assets on a common block-chain. This is achieved by extending the ring confidential transaction with an additional commitment to a colour and a publicly verifiable proof of conservation. With our coloured confidential ring signatures, new token types can be introduced and transferred by any participant using the same sized anonymity set as single-token privacy aware block-chains. Thereby, our system facilitates tracking assets on an immutable ledger without compromising the confidentiality of transactions.

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Felix Engelmann, Frank Kargl, Christoph Bösch. 2018-07-27. Coloured Ring Confidential Transactions. https://arxiv.org/abs/1807.10554

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