Blockchain Private Key Storage Algorithm Based on Image Information Hiding

摘要

The private key is the unique credential of the blockchain asset and can be used to sign and authenticate transactions. Losing the private key also loses the control of the account, so the leakage of the private key is one of the major factors affecting the security of the blockchain. In order to improve the security of blockchain private key storage technology in transactions, this paper proposes a blockchain private key storage algorithm based on image information hiding. In order to improve the camouflage ability and reduce the bit error rate, the algorithm adds random numbers and error correction code to the original private key to provide double protection. After generating the watermark information, the watermark information is embedded into the digital image by means of discrete wavelet transform and quantized index modulation to realize the process of information hiding. Finally, it is proved that this algorithm has good transparency and robustness, can hide the private key information visually, and extract it accurately.