comodo rsa

Burpsuite plug-in development-RSA encryption and decryption This article mainly records the development process of a plug-in that decrypts the request packet, inserts payload, and encrypts. The plug-in application scenario is mainly used to analyze the implementation of the apk. The purpose of this discussion is to facilitate the personal study of security testers, orPenetrationTest. 1. Overview Burpsuite is a very easy-to-use packet capture tool. I a

Java Implementation of Radius secondary verification based on RSA securID (PAP authentication method) and securidradius Secondary Verification Based on rsa SecurID. The RSA server itself can be used as a Radius server, RSA can also be used with other software sets, and other servers can be used as a Radius server. The

Encryption of common Asp. Net tools-asymmetric encryption RSA algorithm, asp. netrsa 　　　　 After several years of entering the programmer industry, there have been gains (enhanced technology) and efforts (time and sub-health status) in the past few years ). Of course, there is no regret, and the code is still long !!! On The Way, never stop !!! In the development process, I have also accumulated some experience, code blocks, and help classes. With

{Code...} phpinfo (); you can see that openssl extensions are installed, but all openssl _ * functions return false, Extension_loaded ('openssl ') or die ('openssl extension not installed '); $ pukey = '----- begin public key ----- %756snyzjcpf2sbfuqxi8u/TFY72y5U4EdbgQMF + %/ I %+ %58q%h + FI1D48kTNwIDAQAB ----- END PUBLIC KEY -----'; $ pikey = '----- begin rsa private key ----- encrypt/TF encrypt + encrypt/decrypt od0LzdLTLg + encrypt + FI1D48kTNwIDA

1. calculation principle of large numbersThe RSA algorithm relies on the calculation of large numbers. Currently, mainstream RSA Algorithms are based on the calculation of large numbers ranging from 512 to 1024 bits. Therefore, we need to first master the calculation principle of large numbers (such as 1024 bits.Most compilers only support 32-bit (or 64-bit) integer operations, that is, the integer used in

RSA private key signature is based on a hash algorithm, such as MD5 or SHA1. I have always thought that the signature process is: first hash of the plaintext, and then use the private key to encrypt the hash value directly. It is not so simple recently that it needs to be BER-encoded and then encrypted after the hash data.Let's look at an example first.Public Key Module : E6-C1-DB ED, 5B, AD B3 D2 A7 A9 8F E8 D8, B2, E5 E4 7A 7B EE, E3 C0, D2 F9 A D C

#regionRsa Public Static byte[] GetBytes (String num) {BigInteger n=NewBigInteger (NUM,Ten); String s= N.tostring (2); if(S.length%8>0) {s=NewString ('0',8-S.length%8) +s; } byte[] data =New byte[S.length/8]; String Ocetstr; for(inti =0; I ) {Ocetstr= S.substring (8I8); Data[i]= Convert.tobyte (Ocetstr,2); } returndata; } /// ///byte array to 16 binary string/// /// /// Public StaticString Convbytearraytohex (byte[] da

Using. NET-brought RSA, you need to reference System.Security.CryptographyTest environment. net4.6Static voidMain (string[] args) { varRSA =NewRSACryptoServiceProvider (); varPublickkey = RSA. Toxmlstring (false); varPrivatekey = RSA. Toxmlstring (true); varPublickeyrsa =NewRSACryptoServiceProvider (); Publickeyrsa.fromxmlstring (Publickkey); varPrivatekeyr

, including secure data encoding and decoding, and many other operations, such as hash, random number generation, and message authentication.System. Security. cryptography. x509certificatesThe namespace provides the implementation of the public Language Runtime Library for the Authenticode X.509 V.3 certificate. Back to the problem we encountered last time ,. in the. NET environment, each time the RSA algorithm is used for encryption, different result

In encryption and decryption, we need to know what is the basic principle of OPENSSL;RSA encryption algorithm, and how to generate the Der and P12 files that we need in the end through OpenSSL.Nonsense not much to say, direct writing steps:The first step: OpenSSL to generate public and private key certificates, and finally a public key certificate and a private key certificate are required。This is the certificate shown under the Mac Ox System, and if

A simple implementation: a three-class keygenerater generates a public key private key pair, the signaturer class uses the Private Key signature, and the signprovider uses the public key for verification. The public key and private key use base64 to encrypt base64. Public class keygenerater {Private byte [] prikey;Private byte [] pubkey; Public void generater (){Try {Java. Security. keypairgenerator keygen = java. Security. keypairgenerator. Getinstance ("RS