public-key-encryption

Encrypting string in javascript and decryption in java

由 大城市里の小女人 提交于 2020-01-12 10:06:11
问题 I would like to know if someone know any library to do encryption in javascript and decryption in java. I have already tried many API, But getting not not getting same values in java. I want public-private key encryption and hence try to use RSA. Few i have used are: http://www-cs-students.stanford.edu/~tjw/jsbn/ http://ats.oka.nu/titaniumcore/js/crypto/readme.txt http://www.ohdave.com/rsa/ Few thing i checked, javascript breaks string into small chunks and then encrypt them which make cipher

Enable Passwordless Authentication with ssh [duplicate]

由 折月煮酒 提交于 2020-01-06 19:59:41
问题 This question already has answers here : Bash: controlling SSH (8 answers) Closed 4 years ago . How can I enable password less authentication with SSH. This is what I have when I was looking for /.ssh folder. bash-3.00$ cd ~/.ssh bash-3.00$ pwd /home/uname/.ssh bash-3.00$ ls -lt total 2 -rw-r--r-- 1 uname gid-uname 489 Jul 26 18:55 known_hosts And I don't know what next I have to do here? I need to change the permission of known_hosts folder? Or something else? 回答1: Add your public key to a

How to generate PublicKey for PrivateKey in X25519?

由 匆匆过客 提交于 2020-01-05 06:27:16
问题 I'm working with X25519-keys based encryption at the moment. My question is, basically, how to derive PublicKey from existing X25519 PrivateKey ? I have found the code in the XDHKeyPairGenerator : BigInteger publicKey = ops.computePublic(privateKey.clone()); But this package is platform-specific, thus not accessible. And I can't find a method to do it through publicly-accessible interfaces. 回答1: You must scalar multiply the private key (which is just a big number) by the 25519 curve generator

Javascript RSA decryption using private key

由 大城市里の小女人 提交于 2020-01-03 03:12:13
问题 Hello I have this script that I set in Javascript : <!DOCTYPE html> <html lang="en"> <head> <script src="jquery-1.7.2.min.js" type="text/javascript"></script> <script language="JavaScript" type="text/javascript" src="jsbn.js"></script> <script language="JavaScript" type="text/javascript" src="rsa.js"></script> <script language="JavaScript"> function encryptData(){ var pem ="-----BEGIN PUBLIC KEY-----\ MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC+tii3IwzHa4i142kAB0dRVXoXA2Q8oF48UgMA\ AV54

C# generate a public and private keys for the DSA encryption algorithm [closed]

由 时间秒杀一切 提交于 2020-01-02 18:25:13
问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 8 years ago . How do I generate a public and a private key for the DSA algorithm in byte array format? 回答1: In DSA algorithm (from wiki): Public key is (p, q, g, y). Private key is x. var dsa = new DSACryptoServiceProvider();

How do I verify a JSON Web Token using a Public RSA key?

由 心不动则不痛 提交于 2020-01-01 09:58:34
问题 New question to keep this question specific and to the point. I have a JWT from Azure and now I need verify the signature in my application. The public keys from Microsoft can be found here: https://login.windows.net/common/discovery/keys How do I use these keys to verify a signature? I can tell these these are the public keys I need as the X5T header in the JWT matches those on this public key list. I am using the JWT PHP library but everything I enter as the public key seems to fail.

How do I verify a JSON Web Token using a Public RSA key?

由 旧城冷巷雨未停 提交于 2020-01-01 09:58:10
问题 New question to keep this question specific and to the point. I have a JWT from Azure and now I need verify the signature in my application. The public keys from Microsoft can be found here: https://login.windows.net/common/discovery/keys How do I use these keys to verify a signature? I can tell these these are the public keys I need as the X5T header in the JWT matches those on this public key list. I am using the JWT PHP library but everything I enter as the public key seems to fail.

Java public private key decryption issue

由 烂漫一生 提交于 2020-01-01 03:38:05
问题 I am trying to encrypt and decrypt a message as mentioned in the below code. Basically I want to encrypt a message with a public key and convert that encrypted message from byte array to String. And decrypt this string into original text. Here are the both methods. Here encryption works fine but decryption fails (error is "Data must start with zero"). I think this is causing because I convert encrypted byte array into String. How do I solve this? (I want to have encrypted byte array as string

openSSL: how to initialize keys for public key encryption?

由 南楼画角 提交于 2019-12-31 07:04:09
问题 For using openSSL API for public key encryption, how is the key (public & private) initialized in a C program, given private key in *.key file format, and public key in *.pem file format: EVP_PKEY *key; /* How is key initialized ? */ ctx = EVP_PKEY_CTX_new(key); Thanks. 回答1: try this: EVP_PKEY *pkey; FILE *f = fopen("<path for your PEM or DER encoded key>", "rb"); if (f == NULL){ // error handling... } //if your key is PEM encoded use this pkey = PEM_read_PUBKEY(f, NULL, NULL, NULL); // pkey

How does a public key verify a signature?

由 陌路散爱 提交于 2019-12-29 10:04:57
问题 I am trying to get a better grapple on how public/private keys work. I understand that a sender may add a digital signature to a document using his/her private key to essentially obtain a hash of the document, but what I do not understand is how the public key can be used to verify that signature. My understanding was that public keys encrypt, private keys decrypt... can anyone help me understand? 回答1: Your understanding of "public keys encrypt, private keys decrypt" is correct... for data
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