pem | 易学教程

How to extract the RSA public key from a .cer and store it in a .pem using OpenSSL?

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问题 I have the requirement to extract the public key (RSA) from a *.cer file. I wish to extract the key and store it in a .pem file so I can use its value to encrypt values using jsencrypt. The following command converts a .cer to .pem : openssl x509 -inform der -in certificate.cer -out certificate.pem Yet it doesn't generate a file with the public key but a file with the contents of the *.cer file. -----BEGIN CERTIFICATE----- MIICPDCCAamgAwIBAg............ *lots of extra contents* -----END

What is a .pem file and How to use it?

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问题 I am designing a new chrome extension and when I package it then I get 2 file: a .crx file and a .pem file. I want to distribuite my extension on my server ( shared ) and on Chrome webstore. Could you tell me what is a pem file and how to use it ? I can't find documentation about it. 回答1: The packager creates two files: a .crx file, which is the actual extension that can be installed. a .pem file, which contains the private key. You'll need the .pem later if you want to: Update the extension

How to renew a self-signed openssl PEM certificate

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I have a self-signed certificate for a SSL Web browser named shttpd.pem My Problem is certificate expired and need renew expiry date Validity Not Before: Sep 16 03:21:22 2008 GMT Not After : Sep 16 03:21:22 2009 GMT I need renew certificate for ten years this is a capture of certificate openssl x509 -text -in shttpd.pem Certificate: Data: Version: 3 (0x2) Serial Number: 86:22:84:0d:ba:09:d4:ca Signature Algorithm: sha1WithRSAEncryption Issuer: C=PL, ST=Some-State, O=Mini Webservice Ltd Validity Not Before: Sep 16 03:21:22 2008 GMT Not After : Sep 16 03:21:22 2009 GMT Subject: C=PL, ST=Some

Correctly creating a new certificate with an intermediate certificate using bouny castle

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问题 So my problem is as follows, Basically I want to create a certificate chain using bouncy castle (jdk16 version 1.46). I am rather new to bouncy castle and java.security in general so if my approach might be completely wrong, but anyway this is what I did: So far I am able to create a self signed certificate which I use as the root certificate. This is done using the following code: //-----create CA certificate with key KeyPair caPair = Signing.generateKeyPair("DSA", 1024, null, null); This

How to build a SSLSocketFactory from PEM certificate and key without converting to keystore?

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问题 I'm given a self-signed client certificate kit that is to be used to access a server via HTTPS. The kit consists of the following PEM files: client.crt (client certificate) client.key (client private key) ca.crt (CA certificate) One way to solve the task is to generate a Java keystore: Use openssl to convert client certificate and key to PKCS12 keystore Use keytool to import CA certificate to the store ... and then use code like the following to build SSLSocketFactory instance: InputStream

Apache HttpClient and PEM certificate files

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问题 I'd like to programmatically access a site that requires Client certificates, which I have in PEM files. In this application I don't want to add them to my keystore, use keytool, or openssl if I can avoid doing so. I need to deal with them directly in code. HttpClient httpclient = new DefaultHttpClient(); HttpGet httpget = new HttpGet("https://my.secure.site.com/url"); // TODO: Specify ca.pem and client.pem here? HttpResponse response = httpclient.execute(httpget); HttpEntity entity =

Get bundle id from p12/pem file

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Is it possible to get application's bundle id from p12/pem file for APNS? I have a system where user can upload his push certificate (p12 or pem) and would be great to show him an info about bundle id so user will be able to check what he uploaded I'm not sure whether it's 100% helpful but you can use command line tool from openssl library in the following manner openssl pkcs12 -info -in mycert.p12 -passin pass:MyCertPassPhrase this will produce the output you can parse MAC Iteration 1 MAC verified OK PKCS7 Encrypted data: pbeWithSHA1And40BitRC2-CBC, Iteration 2048 Certificate bag Bag

Convert PEM traditional private key to PKCS8 private key

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've been given a PEM file with a certificate and pub/private keys. Specifically it includes the headers -----BEGIN CERTIFICATE----- -----END CERTIFICATE----- -----BEGIN RSA PRIVATE KEY----- -----END RSA PRIVATE KEY----- -----BEGIN RSA PUBLIC KEY----- -----END RSA PUBLIC KEY----- in that specific order. My understanding is without a header following the BEGIN RSA PRIVATE KEY header that this pem file contains a private key in the traditional format (PKCS1) without encryption. I need to convert this private key to a DER encoded PKCS8

Creating .pem file programmatically in Objective-C?

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I am trying to create a PEM file programmatically from a Certificate Signing Request using Objective-C and the OpenSSL library in an iPhone app. I have generated the CSR (of type X509_REQ *) by following Adria Navarro's answer to this question: Generating an OpenSSL Certificate Signing Request in iOS with Keychain stored keys I've confirmed that the CSR is valid by printing it out to the console. Below is my code for creating the PEM file (CertificateSigningRequest.pem). It ends up creating a blank file (0 bytes and no text). Am I doing something wrong, such that it is not able to write to the

pyOpenSSL creating a pem file

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've created a key pair using the following code in python with pyOpenSSL: from OpenSSL import crypto k = crypto.PKey() k.generate_key(crypto.TYPE_RSA, 2048) Now how can I create the private and public key .pem files from the key object? If there is any tutorial available please let me know. I found none. From the manual, it's difficult to know as I'm new to OpenSSL. What are the chances that the same code will create two same key pairs is there is no specific unique key is being used in RSA? 回答1: I hope this will help people in the future,