tripledes

问题 I have an android project in which am getting an Triple DES encrypted piece of text from my web services. I need to Triple DES decrypt. However, I am getting invalid key exceptions. My key is converted to HEX format and I got an error: W/System.err﹕ java.security.InvalidKeyException: DES key too long - should be 8 bytes I found here a forum explaining that hex may cause issue "DES keys are 56 bits normally packaged in 8 bytes so the chances are that the 16 bytes/characters they have given you

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 10 months ago . I need a way to encrypt and decrypt with 3des. I'm currently using php 7.1 I found this question, but mcrypt is deprecated as of php 7.1 and I can't find any other resource for this. 回答1: Continue to the Comments section of the function's manual and you'll see the following: If

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 10 months ago . I need a way to encrypt and decrypt with 3des. I'm currently using php 7.1 I found this question, but mcrypt is deprecated as of php 7.1 and I can't find any other resource for this. 回答1: Continue to the Comments section of the function's manual and you'll see the following: If

问题 I'm encrypting a big string with TDES and trying to decrypt it. Can't understand what's is wrong. When it does the READ function in decryption I get "Bad Data" from the Cryptographic Exception. (I marked the line with comments) To generate and encrypt the string: public void MssGenerateKeyPair(string ssSymmetricKey, out string ssCipheredKeyPair, out string ssPublicKey) { ssCipheredKeyPair = string.Empty; ssPublicKey = string.Empty; //Symmetric key is the hash of user's signing password

问题 I have Key Serial Number (KSN) , Base Derivation Key (BDK) , and encrypted string. KSN = 9500030000044520002B BDK = 0123456789ABCDEFFEDCBA9876543210 Encrypted string

问题 I'm working on decrypting something I didn't create. The authors encrypted it from a java program, and I'm trying to decrypt it in C#. They have given me the logic behind their encryption (the integer key array, encoding type, and TripleDES), and I've been trying to figure this out. Long story short, I have been able to decrypt most of the text, however, the middle is always scrambled. I've researched this a lot trying to figure it out, notably, the issue of Java's negative byte numbers. This

问题 public static string Encrypt(string toEncrypt, string secretKey) { byte[] keyArray; byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt); var md5Serv = System.Security.Cryptography.MD5.Create(); keyArray = md5Serv.ComputeHash(UTF8Encoding.UTF8.GetBytes(secretKey)); md5Serv.Dispose(); var tdes = System.Security.Cryptography.TripleDES.Create(); //set the secret key for the tripleDES algorithm tdes.Key = keyArray; //mode of operation. there are other 4 modes. //We choose ECB(Electronic

问题 I use a web service to authenticate. And this web service use the TripleDes algorithm to encrypt to user name and password. Im my silverlight application I have to encrypt these value for calling web service but I can not add reference of System.Security.Cryptography dll. How can I use this dll file for Silverlight application? 回答1: There is no such thing as a System.Security.Cryptography dll. System.Security.Cryptography is a namespace present in several assemblies that Microsoft ships. In

问题 According to Wikipedia, TripleDES supports 56, 112, and 168-bit key lengths, but the System.Cryptography.TripleDESCryptoServiceProvider.LegalKeySizes says it only accepts 128 and 192-bit key lengths. The system I'm developing needs to be interoperable (data encrypted by my code needs to be decryptable in PHP, Java, and Objective-C) and I don't who is correct in this case. So who should I believe? And how can I be sure my encrypted data is portable? 回答1: Wikipedia does not say TripleDES

问题 Here is my problem: I've got a legacy code in C++ (using crypto++ v5.6.1) and I develop a new one in C# (.NET 3.5 using System.Security.Cryptography). I can't change the C++ code, but I need to be able to decrypt data previously encrypted and previous applications has to be able to decrypt the data I will crypt with my new C# code. The algorithm used is TripleDES with CFB cipher mode in both cases, but in the end, the encrypted data are not the same, the number of bytes are identical as well