DATA ENCRYPTION AND DECRYPTION METHOD, DEVICE, STORAFE MEDIUM AND ENCRYPTED FILE

The present application relates to the technical field of data processing, and provided are methods and apparatuses for encrypting and decrypting data, a storage medium, and an encrypted file. The method for encrypting data comprises: acquiring a first key, and performing an obfuscation operation on the first key and data to be encrypted to obtain obfuscation operation result data; acquiring a second key, and obtaining a first signature of the obfuscation operation result data according to the second key; acquiring a third key, and using the third key to encrypt the first key, the data, and the first signature to obtain target ciphertext; acquiring a fourth key, and obtaining a second signature of the target ciphertext according to the fourth key; and generating an encrypted file comprising the target ciphertext and the second signature. The security of data protection may be improved by using the technical solution of the present application.

The present application relates to the technical field of data processing, and provided are methods and apparatuses for encrypting and decrypting data, a storage medium, and an encrypted file. The method for encrypting data comprises: acquiring a first key, and performing an obfuscation operation on the first key and data to be encrypted to obtain obfuscation operation result data; acquiring a second key, and obtaining a first signature of the obfuscation operation result data according to the second key; acquiring a third key, and using the third key to encrypt the first key, the data, and the first signature to obtain target ciphertext; acquiring a fourth key, and obtaining a second signature of the target ciphertext according to the fourth key; and generating an encrypted file comprising the target ciphertext and the second signature. The security of data protection may be improved by using the technical solution of the present application.