cac digital signature

in the payment business, you need to verify the correctness of the information, so choose to use the digital signature, streamlined as follows:Private key signature, public key authentication signature.Business platform (information transfer side): The private key is used to sign the transfer data (sign)Payment platform (Information Receiver): Public key for veri

Original address: an example of Java digital signature based on RSA algorithmFirst, preface:Network data security includes the security of the data itself, the integrity of the data (to prevent tampering), the non-repudiation of the data source, and other elements. Encryption algorithm for data encryption can ensure the security of the data itself, the use of Message digest can guarantee the integrity of th

The digital signature and encryption technologies based on public key algorithms provide theoretical basis and technical feasibility for solving the above problems, the promulgation and implementation of the Electronic Signature Law of the People's Republic of China provide a legal basis for the use of digital signatur

; Vfs:tfilestream; vstr:string; Begin Result: =-1; Vstr:= '; Try vfs:= tfilestream.create (Fvfilename, Fmopenread); Open in read mode Vfs.position:= Fvhexdz; Set Start position Vfs.readbuffer (Vbuffer, SizeOf (Vbuffer)); Read data to Buffer For vint:=0 to 3 do Vstr:=inttohex (Vbuffer[vint], 2) + vstr; Get 16 in. result:= strtoint (' $ ' +vstr); Except Result: =-1 End; Vfs.free; End Procedure Tform1.button1click (Sender:tobject); Begin Self.close; End Procedure Tform1.button

is 1, what is the use of this encryption? But my good friend X said someone was impersonating me and sending him a letter. How to do it. I sent my letter, the content is C, with my private key 2, encrypted, encrypted content is D, to X, and then tell himDecryption look is not C. He decrypted it with my public key 1 and found that it was c.At this point, he would think that the data that can be decrypted with my public key must be encrypted with my private key. Only I knew I had the private key,

Encryption and digital signature Copyright Disclaimer: csdn is the hosting service provider of this blog. If this article involves copyright issues, csdn does not assume relevant responsibilities, ask the copyright owner to directlyArticleContact the author. Encryption and digital signature I.

Java digital signature algorithm-RSA Signature features: Security Anti-denial Digital Signature: a message digest algorithm with a key (Public Key and private key). The algorithm uses the private key for signature and public k

Referring to RSA, you will think of public key, private key, encryption, decryption, digital signature, digital envelope ... But perhaps everyone and I have, some of the understanding of which there are misunderstandings, recently looked at the RSA RFC 2313 document, coupled with some of their own tests, finally cleared up some of these relationships, mainly incl

Digital signatures can verify data integrity, source of authentication data, and play a role in anti-repudiation, which corresponds to the data integrity service, authentication (identification) service, and anti-repudiation service in the OSI Reference Model (3 points). The Message digest algorithm is the best algorithm to verify the integrity of the data, so the algorithm becomes a necessary part of the digital