rc4-cipher

问题 I pulled this code from here for asp http://bytes.com/topic/access/insights/906671-rc4-encryption-algorithm-vba-vbscript, which i then run thru base64. I am wonder if anyone can help me figure out how to write the decryption piece but in Python. As the decryption will happen on my Python Server Page. Found this http://www.id-snippet.com/20801/python-rc4-cipher/, but it doesn't decrypt the RC4 asp from the first link. -Jim %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ASP page 'Base64

问题 I pulled this code from here for asp http://bytes.com/topic/access/insights/906671-rc4-encryption-algorithm-vba-vbscript, which i then run thru base64. I am wonder if anyone can help me figure out how to write the decryption piece but in Python. As the decryption will happen on my Python Server Page. Found this http://www.id-snippet.com/20801/python-rc4-cipher/, but it doesn't decrypt the RC4 asp from the first link. -Jim %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ASP page 'Base64

问题 This question already has an answer here : Encrypting files using RC4 encryption algorithm in C# (1 answer) Closed 4 years ago . I'm trying to make a file encryption and I really had no clue how to do it with RC4 with these code , text encryption and decryption are fine. button1 is for text encryption and button3 is for text decryption. The problem comes when I tried to encrypt an image. button2 is use to open and encrypt/decrypt a file private void button1_Click(object sender, EventArgs e) {

问题 I have been trying to implement RC4 in Matlab but due to unknown reason the following code is not giving the right output. Please give me suggestion on improving this Matlab code: function ef = rc4full(pf,ki) s = rc4key(ki); disp(s); s = uint8(s); j0 = 0; i0 = 0; r = prga(s, pf); disp(r); v = uint8(pf); C = bitxor(v,r); disp(C); data_show =dec2hex(C); ef = data_show; function sc=rc4key(key) for i0 = 0:255 sc(i0+1) = i0+1; end j0 = 0; for i0 = 0:255 j0 = mod(j0 + sc(i0+1) + key(mod(i0, length

问题 My question is, how do I encrypt and decrypt a file in C# using the RC4 encryption algorithm? This is not a duplicate of these questions: What is a NullReferenceException, and how do I fix it? RC4 Algorithm: Unable to Encrypt / Decrypt data where client uses Javascript and Server c# RC4 128 bit encryption in C# I do however acknowledge that at first glance, this question will appear like a duplicate of this question, however, it is around 7 months old, and still has no answer with working

问题 I'm trying to implement RC4 and DH key exchange in python. Problem is that I have no idea about how to convert the python long/int from the key exchange to the byte array I need for the RC4 implementation. Is there a simple way to convert a long to the required length byte array? Update : forgot to mention that the numbers I'm dealing with are 768 bit unsigned integers. 回答1: I haven't done any benchmarks, but this recipe "works for me". The short version: use '%x' % val , then unhexlify the

问题 I need to pass encrypted (and base64 encoded) string data between a .NET 4.0 WCF application hosted in IIS (basicHttpBinding) and an internal client application system that uses a JavaScript RC4 algorithm implementation to encrypt / decrypt data. So far I have not succeeded in sending data encrypted by the client to the server and then decrypting it on the server (or the reverse - where the client decrypts data received from a server response). We have tried a few variations of RC4 algorithms

问题 This below program is a converted version from another C program. Function rc4key is showing correct result but function prga is showing incorrect result (comparing to the C, the correct program), I am trying for quite long time but can't understand why the j0 is showing 178, 255, 255, 255, 255 instead of 178, 174, 22, 42, 76. Your suggestion and input is very much needed. I used rc4('Hello','Hi') in this function: function ef = rc4(pf,ki)%Please ignore this function for this time being s =

问题 Is there a way to make this work in an ASP page? It was working fine with charset windows-1253 but now I have to convert my site to UTF-8 and the only problem I have is encryption and decryption. I have encrypted members registration passwords and now with UTF-8, after decryption passwords looks like this: 2��8��6 Please I nead some help (sorry for my English). This is RC4 code: Dim sbox(255) Dim rc4Key(255) Sub RC4Initialize(strPwd) dim tempSwap, a, b intLength = len(strPwd) for a = 0 To 255

问题 I tried running my application on my pc, but I keep getting this thing. Is it possible that I'm missing some libraries? fabsam.crypto.CryptoException: java.security.InvalidKeyException: No installed provider supports this key: javax.crypto.spec.SecretKeySpec at fabsam.crypto.RC4Decoder.decode(RC4Decoder.java:37) ~[bin/:na] ... (skipped my projects stack trace) at java.lang.Thread.run(Thread.java:662) [na:1.6.0_25] Caused by: java.security.InvalidKeyException: No installed provider supports