Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
43 words
A process for making an authenticatable copy of an original document supplied by an entity, including making a hard copy of the original document and incorporating on the document a digital signature representing the document contents and the identity of the said entity.
Claim 2
Dependent Claim
43 words
A process for making an authenticatable copy of an original document supplied by an entity, including making a hard copy of the original document and incorporating on the document a digital signature representing the document contents and the identity of the said entity.
Claim 3
Dependent Claim
27 words
A process as claimed in claim 1, wherein the identity of the said entity is represented by a secret signing key of a dual key authentication system.
Claim 4
Dependent Claim
23 words
A process as claimed in claim 2, wherein the document incorporates a public key that is mathematically related to the secret signing key.
Claim 5
Dependent Claim
67 words
A process for validating the authenticity of a signed copy of an original document supplied by an entity, said signed copy having been provided with a digital signature using a secret signing key supplied by the entity including (a) checking the digital signature of the signed copy using a public key mathematically related to the secret key, (b) indicating whether the signed copy is valid or invalid.
Claim 6
Dependent Claim
67 words
A process for validating the authenticity of a signed copy of an original document supplied by an entity, said signed copy having been provided with a digital signature using a secret signing key supplied by the entity including (a) checking the digital signature of the signed copy using a public key mathematically related to the secret key, (b) indicating whether the signed copy is valid or invalid.
Claim 7
Dependent Claim
28 words
A process as claimed in claim 4 wherein, (c) if the signed copy is valid, generating a hard copy of the signed copy but without a digital signature.
Claim 8
Independent Claim
78 words
A system for authenticating hard copies of original documents comprising: (a) a copying machine, said copying machine including, (i) means for receiving from an entity an original document, (ii) means for generating a digital signature from a document, (iii) means for receiving information uniquely identifying the entity supplying the original document, (iv) means for incorporating in the digital signature information representative of the entity's identification, (v) means for producing a signed document first copy incorporating the digital signature.
Claim 9
Independent Claim
78 words
A system for authenticating hard copies of original documents comprising: (a) a copying machine, said copying machine including, (i) means for receiving from an entity an original document, (ii) means for generating a digital signature from a document, (iii) means for receiving information uniquely identifying the entity supplying the original document, (iv) means for incorporating in the digital signature information representative of the entity's identification, (v) means for producing a signed document first copy incorporating the digital signature.
Claim 10
Dependent Claim
17 words
A system as claimed in claim 6, further comprising means for indicating whetherthe signed copy is authentic.
Claim 11
Dependent Claim
26 words
A system as claimed in claim 7, further comprising means for making a second hard copy from the first copy when the signed copy is authentic.
Claim 12
Dependent Claim
25 words
Asystem as claimed in claim 7 or claim 8, wherein the digital signatures incorporates information representative of a secret signing key owned by the entity.
Claim 13
Dependent Claim
21 words
A system as claimed in claim 9, wherein the indicating means use a public key mathematically related to the secret key.