openssl s_client using a proxy
You can use proxytunnel: proxytunnel -p yourproxy:8080 -d www.google.com:443 -a 7000 and then you can do this: openssl s_client -connect localhost:7000 -showcerts Hope this can help you!
openssl
is it possible making openssl skipping the country/common name prompts?
thanks to @indiv according to this guide -subj is the way to go, e.g. -subj ‘/CN=www.mydom.com/O=My Company Name LTD./C=US’
How to save public key from a certificate in .pem format
There are a couple ways to do this. First, instead of going into openssl command prompt mode, just enter everything on one command line from the Windows prompt: E:\> openssl x509 -pubkey -noout -in cert.pem > pubkey.pem If for some reason, you have to use the openssl command prompt, just enter everything up to the … Read more
Unable to load Private Key. (PEM routines:PEM_read_bio:no start line:pem_lib.c:648:Expecting: ANY PRIVATE KEY) [closed]
Open the key file in Notepad++ and verify the encoding. If it says UTF-8-BOM then change it to UTF-8. Save the file and try again.
What is the purpose of the -nodes argument in openssl?
The option -nodes is not the English word “nodes”, but rather is “no DES”. When given as an argument, it means OpenSSL will not encrypt the private key in a PKCS#12 file. To encrypt the private key, you can omit -nodes and your key will be encrypted with 3DES-CBC. To encrypt the key, OpenSSL prompts … Read more
How to generate an openSSL key using a passphrase from the command line?
If you don’t use a passphrase, then the private key is not encrypted with any symmetric cipher – it is output completely unprotected. You can generate a keypair, supplying the password on the command-line using an invocation like (in this case, the password is foobar): openssl genrsa -aes128 -passout pass:foobar 3072 However, note that this … Read more
How can I transform between the two styles of public key format, one “BEGIN RSA PUBLIC KEY”, the other is “BEGIN PUBLIC KEY”
I wanted to help explain what’s going on here. An RSA “Public Key” consists of two numbers: the modulus (e.g. a 2,048 bit number) the exponent (usually 65,537) Using your RSA public key as an example, the two numbers are: Modulus: 297,056,429,939,040,947,991,047,334,197,581,225,628,107,021,573,849,359,042,679,698,093,131,908,015,712,695,688,944,173,317,630,555,849,768,647,118,986,535,684,992,447,654,339,728,777,985,990,170,679,511,111,819,558,063,246,667,855,023,730,127,805,401,069,042,322,764,200,545,883,378,826,983,730,553,730,138,478,384,327,116,513,143,842,816,383,440,639,376,515,039,682,874,046,227,217,032,079,079,790,098,143,158,087,443,017,552,531,393,264,852,461,292,775,129,262,080,851,633,535,934,010,704,122,673,027,067,442,627,059,982,393,297,716,922,243,940,155,855,127,430,302,323,883,824,137,412,883,916,794,359,982,603,439,112,095,116,831,297,809,626,059,569,444,750,808,699,678,211,904,501,083,183,234,323,797,142,810,155,862,553,705,570,600,021,649,944,369,726,123,996,534,870,137,000,784,980,673,984,909,570,977,377,882,585,701 Exponent: 65,537 The question then becomes how do we want to store these … Read more
How to extract public key using OpenSSL?
openssl rsa -in privkey.pem -pubout > key.pub That writes the public key to key.pub
Converting pfx to pem using openssl
Another perspective for doing it on Linux… here is how to do it so that the resulting single file contains the decrypted private key so that something like HAProxy can use it without prompting you for passphrase. openssl pkcs12 -in file.pfx -out file.pem -nodes Then you can configure HAProxy to use the file.pem file. This … Read more
Convert pem key to ssh-rsa format
No need to compile stuff. You can do the same with ssh-keygen: ssh-keygen -f pub1key.pub -i will read the public key in openssl format from pub1key.pub and output it in OpenSSH format. Note: In some cases you will need to specify the input format: ssh-keygen -f pub1key.pub -i -mPKCS8 From the ssh-keygen docs (From man … Read more