csr | 易学教程

What RSA key length should I use for my SSL certificates?

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问题 I'm in the process of creating a CSR, and I wonder which is arguably the best length for my RSA key. Of course, 384 is probably too weak, and 16384 is probably too slow. Is there a consensus on the key length one should use, depending on the certificate lifetime? Edit : Like most people, I want my key to be reasonably strong. I'm not concerned that the NSA could maybe break my key in 2019. I just want to know what's the best practice when one plan to do normal business (for example an e

BouncyCastle RSAPrivateKey to .NET RSAPrivateKey

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I'm creating a certificate distribution system to keep track of clients and stuff. What happens is: Client send CSR to Server Server checks and signs certificate Server sends Signed certificate to Client Client puts Signed certificate plus Private key in Windows store. So on the client this happens: //Pseudo Server Object: Server s = new Server(); //Requested Certificate Name and things X509Name name = new X509Name("CN=Client Cert, C=NL"); //Key generation 2048bits RsaKeyPairGenerator rkpg = new RsaKeyPairGenerator(); rkpg.Init(new KeyGenerationParameters(new SecureRandom(), 2048));

Generate a CSR in iOS Library? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . I want to see if is possible to generate a CSR (Certificate Signing Request) in iOS, and if there is a library for it. I want to generate a request, sign it with a private key from an extension, and then send the CSR request back to the server. Is this possible, and is there a good library for it? Thanks 回答1:

Access value, column index, and row_ptr data from scipy CSR sparse matrix

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问题 I have a large matrix that I would like to convert to sparse CSR format. When I do: import scipy as sp Ks = sp.sparse.csr_matrix(A) print Ks Where A is dense, I get (0, 0) -2116689024.0 (0, 1) 394620032.0 (0, 2) -588142656.0 (0, 12) 1567432448.0 (0, 14) -36273164.0 (0, 24) 233332608.0 (0, 25) 23677192.0 (0, 26) -315783392.0 (0, 45) 157961968.0 (0, 46) 173632816.0 etc... I can get vectors of row index, column index, and value using: Knz = Ks.nonzero() sparserows = Knz[0] sparsecols = Knz[1]

iPhone Developer Portal won't accept my CSR

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问题 I am using the Development Provisioning Assistant in the iPhone Developer Portal, but when I get to the part where it asks me to generate and upload my CSR, I try to upload it and it just gives me this error: The CSR selected is invalid. Please check the file and try again. Does anyone know what this means or what I can do about it?? Thanks! 回答1: Also make sure you use Safari for uploading. I tried Chrome and it always failed. Then I switched to Safari and it worked with the same CSR. 回答2:

Creating an x509 v3 user certificate by signing CSR

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问题 I know how to sign a CSR using openssl , but the result certificate is an x509 v1, and not v3. I'm using the following commands: x509 -req -days 365 -in myCSR.csr -CA myCA.crt -CAkey myCA.key -CAcreateserial -out userCertificate.crt I've searched but have not been able to find a solution. Is there another way to do this programmatically? 回答1: You need to specify an extensions file. For example: openssl x509 -days 365 -in myCSR.csr -extfile v3.ext -CA myCA.crt -CAkey myCA.key -CAcreateserial

BouncyCastle RSAPrivateKey to .NET RSAPrivateKey

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问题 I'm creating a certificate distribution system to keep track of clients and stuff. What happens is: Client send CSR to Server Server checks and signs certificate Server sends Signed certificate to Client Client puts Signed certificate plus Private key in Windows store. So on the client this happens: //Pseudo Server Object: Server s = new Server(); //Requested Certificate Name and things X509Name name = new X509Name("CN=Client Cert, C=NL"); //Key generation 2048bits RsaKeyPairGenerator rkpg =

Certificate enrollment process

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问题 I am looking for a procedure of enroll a certificate. I have search a lot but didn\'t find a good answer.Till now I get that firstly I have to generate a Key store (For creating a public key and a private key)then private key should be kept private and public key is send with other information (like name ,organization )to the CA.Then CA will generate something and give me back which contain the public key and information. Till now i get this but What CA generate? What is P12 file and what is

How do you sign a Certificate Signing Request with your Certification Authority?

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问题 During my search, I found several ways of signing a SSL Certificate Signing Request: Using the x509 module: openssl x509 -req -days 360 -in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out server.crt Using the ca module: openssl ca -cert ca.crt -keyfile ca.key -in server.csr -out server.crt Note: I am unsure of the use of the right parameters for this one. Please advise correct usage if I am to use it. What way should one use to sign certificate requests with your Certification