Verification method and device suitable for block chain
A verification method, blockchain technology, applied in the field of financial technology and computer software
Active Publication Date: 2020-05-15
WEBANK (CHINA) +1
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[0004] The embodiment of the present application provides a verification method and device suitable for blockchain, which solves the problem in the prior art that the correctness of the ciphertext decryption process cannot be verified without revealing the shared private key
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[0056] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solution of the present application. To illustrate, rather than limit, the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments can be combined without conflict.
[0057] The nouns appearing in the embodiments of the present application are firstly explained below.
[0058] Blockchain: such as figure 1 As shown, the blockchain is a chain composed of a series of blocks. In addition to recording the data of this block, each block also records the hash value of the previous block. In this way, a chain is formed. There are two core...
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The invention discloses a verification method and device suitable for a block chain. The method comprises the steps that a first decryption node obtains an encrypted ciphertext from the block chain; the first decryption node determines a decryption intermediate result of the encrypted ciphertext on the first decryption node according to the private key of the first decryption node and the sub-ciphertext in the N + 1 sub-ciphertexts; the first decryption node obtains the plaintext of the encrypted ciphertext according to the decryption intermediate result of each decryption node; and the firstdecryption node uploads the plaintext and a decryption key certificate to the blockchain, wherein the decryption key certificate is used for verifying that the plaintext is obtained by decryption according to the private key of the first decryption node. When the method is applied to the financial technology, the private key of the first decryption node is not exposed, and the plaintext can be verified to be obtained by decryption according to the private key of the first decryption node.
Description
technical field [0001] The present invention relates to the fields of financial technology (Fintech) and computer software, in particular to a verification method and device suitable for blockchain. Background technique [0002] With the development of computer technology, more and more technologies (big data, distributed, blockchain (Blockchain), artificial intelligence, etc.) are applied in the financial field, and the traditional financial industry is gradually transforming into financial technology (Fintech). At present, in the field of financial technology, the security of financial data is very important, so financial data needs to be encrypted and decrypted during transmission. [0003] In the prior art, each decryptor has a shared private key. After decrypting the ciphertext through the shared private key, the final result is only a decrypted plaintext. To verify the correctness of decrypting the ciphertext, you need Obtain the private key shared by the decryptor, w...
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IPC IPC(8): H04L9/32H04L29/06
CPCH04L9/3236H04L63/0428H04L63/12H04L9/50
Inventor 王朝阳严强李昊轩李辉忠张开翔范瑞彬刘雪峰裴庆祺
Owner WEBANK (CHINA)