Under section 2 of the Electronic Transactions Ordinance (Cap. 553), the following terms are defined as :
Electronic record
It means as a record generated in digital form by an information system, which can be-
1) transmitted within an information system or from one information system to another; and
2) stored in an information system or other medium.
Electronic signature
It means any letters, characters, numbers or other symbols in digital form attached to or logically associated with an electronic record, and executed or adopted for the purpose of authenticating or approving the electronic record.
Digital signature
In relation to an electronic record, Digital Signature means an electronic signature of the signer generated by the transformation of the electronic record using an asymmetric cryptosystem and a hash function such that a person having the initial untransformed electronic record and the signer's public key can determine-
1) whether the transformation was generated using the private key that corresponds to the signer's public key; and
2) whether the initial electronic record has been altered since the transformation was generated.
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