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What is the password technology to solve the threat of tampering and modifying information?
Symmetric password and asymmetric password, hash function, digital signature. The cryptographic techniques to solve the threat of tampering with information include symmetric passwords and asymmetric passwords, hash functions and digital signatures. The so-called information tampering refers to the active attacker modifying the eavesdropped information (such as deleting and/or replacing part or all of the information) and then transmitting the information to the original receiver.