encryption

问题 I was wondering if my idea is possible with hibernate. What I want is that there is one table with usernames and every table wich has a reference to this table has the username encrypted in a column. So the username doesn't stand in normal text but encrypted in every table which have a reference to the user table. So I need something like: @ManyToOne @JoinColumn(name = "userName", insertable=false, updatable=false, encrypted="md5") public User getUser(){ return this.user; } public void

问题 I have IDs from a database, and I want them to be short and easily differentiatable by eye (i.e., two close numbers look different). Like this: 13892359163211 -> ALO2WE7 13992351216421 -> 52NBEK3 or similar, algorithmically. So kind of like a hash, except it needs to be reversible? An encryption algorithm like AES is almost ideal, except that its outputs are way too long. (and overkill). I'm using Python (3), although I don't think that should really matter 回答1: New answer with 'close'

问题 I have a C++ std::string which is encrypted using AES128 and want to write it into a sqllite database. I figured out already, that I have to escape ' characters with '' and " with "" , but there seems to be another problem. It says: unrecognized token: "'""\235\211g\264\376\247\3348( ]tu\202\346\360\226h\205D\322-\373\347y" My query looks like: UPDATE tablename SET column='""\235\211g\264\376\247\3348( ]tu\202\346\360\226h\205D\322-\373\347y\315\|`\3206\245\220j6 \215&\301ww/\222R\352]\253,

问题 My problem is that the newer versions of OpenSSL aren't compatible with default settings of CryptoJS. The default hash used by openssl enc for password-based key derivation changed in 1.1.0 to SHA256 versus MD5 in lower versions. https://unix.stackexchange.com/questions/344150/why-can-one-box-decrypt-a-file-with-openssl-but-another-one-cant/344586#344586 By default, CryptoJS uses MD5 for its key derivation. OpenSSL used MD5, but now in OpenSSL versions >=1.1.0 it's using SHA256. So if I pass

问题 I am porting some C# code to C++, and trying to encrypt a textfile with Triple DES encryption. But I am confused; some encryption APIs only require one key for Triple DES (C# for example: How to implement Triple DES in C# (complete example) ), while others require 2 or 3 keys (in several C++ implementations I've found). Why is that? 回答1: The TDEA keying is maybe better understood here considering the key length over just a simple key. Depending on the keying option used, it can be a single

问题 I created decrypt.py two days ago. It's quite a funny program. It reads from stdin and prints the contents garbled to the screen using curses. However, when there are special characters like ansi color codes or tabs present in the input, they don't get displayed properly. Is there a good way to map these characters to the way curses handles tabs and colors on the terminal window? Your help is much appreciated. 回答1: This is a pretty niche function, so I'm not surprised there's been no answer.

问题 For my purpose all I need to know is drive's BitLocker encryption status by its DOS path. Something like this: enum DriveEncryptionStatus{ Unprotected, Protected, Unknown }; DriveEncryptionStatus = GetDriveBitlockerEncryptionStatus(L"C:\\"); I was able to find the Win32_EncryptableVolume class that unfortunately comes with this caveat: To use the Win32_EncryptableVolume methods, the following conditions must be met: You must have administrator privileges. Any idea how to do this without

问题 I have the following code in javascript, running on NodeJs: encryptPassword: function(password) { if (!password || !this.salt) return ''; var salt = new Buffer(this.salt, 'base64'); return crypto.pbkdf2Sync(password, salt, 10000, 64).toString('base64'); } How can I implement the decrypt function? It can be in java or in javascript. Thx! 回答1: PBKDF2 is a one-way hashing algorithm. It's not possible to decrypt the generated hash. You can read more about this here. A one way hash performs a

问题 I have the following code in javascript, running on NodeJs: encryptPassword: function(password) { if (!password || !this.salt) return ''; var salt = new Buffer(this.salt, 'base64'); return crypto.pbkdf2Sync(password, salt, 10000, 64).toString('base64'); } How can I implement the decrypt function? It can be in java or in javascript. Thx! 回答1: PBKDF2 is a one-way hashing algorithm. It's not possible to decrypt the generated hash. You can read more about this here. A one way hash performs a

问题 So, I'm interested in obfuscating the SharedPreferences xml file of my app, much like Android LVL does to obfuscate it's license cahce data. Would this be conceivable? Plenty of google-digging has yielded little results that might address my question. And I'm certainly no cryptologist. What about other forms of encryption? My end goal isn't to try making the xml bulletproof, I just want to block out the lower 90% of people who would refrain from messing around with it if it's not in plain