No, it is not possible to generate the private.key file from the certificate.crt file. You will need to generate a new key and a new certificate, if the below does not apply to you. You may ask your certificate provider if they're willing to re-generate your certificate, a few companies offer the possibility. Crt and key files represent both parts of a certificate, key being the private key to the certificate and crt being the signed certificate. It's only one of the ways to generate certs, another way would be having both inside a pem file or another in a p12 container. In principle, it would be possible to create an RSA private key from which the corresponding public key cannot be easily obtained, but this would require using both a non-standard key generation method and a non-standard private key storage format. Nov 09, 2019 A.PFX (Personal Information Exchange) file is used to store a certificate and its private and public keys. For example, if we need to transfer SSL certificate from one windows server to another, You can simply export it as.pfx file using IIS SSL export wizard or MMC console. Jul 25, 2017 It’s kind of ridiculous how easy it is to generate the files needed to become a certificate authority. It only takes two commands. First, we generate our private key: openssl genrsa -des3 -out myCA.key 2048 You will be prompted for a pass phrase, which I recommend not skipping and keeping safe.

• Is It Possible To Generate Key File From Crtv
• Generate Private Key File

How do I make my own bundle file from CRT files?
Answer: You may do this using you favorite text editor or by using the command line.
Example:
# Root CA Certificate - AddTrustExternalCARoot.crt
# Intermediate CA Certificate 1 - ComodoRSAAddTrustCA.crt OR ComodoECCAddTrustCA.crt
# Intermediate CA Certificate 2 - ComodoRSADomain/Organization/ExtendedvalidationSecureServerCA.crt OR ComodoRSAECCDomain/Organization/ExtendedvalidationSecureServerCA.crt
# Intermediate CA Certificate 3 - ComodoSHA256SecureServerCA.crt
# Your SSL Certificate - yourDomain.crt
Note: You will not need your SSL certificate for this exercise.
GUI Text Editor
1. Open All files in a text editor. (Remember, not your domain certificate.)
2. Create a new blank text file.
3. Copy contents of all files in reverse order and paste them into the new file.
Example: Intermediate 3, Intermediate 2, Intermediate 1, Root Certificate.
4. Save newly created file as 'yourDomain.ca-bundle'.
Command Line
Linux or UNIX-like Operating Systems:
-- cat ComodoRSAAddTrustCA.crt ComodoRSADomain/Organization/ExtendedvalidationSecureServerCA.crt AddTrustExternalCARoot.crt > yourDomain.ca-bundle

Or

-- cat ComodoSHA256SecureServerCA.crt AddTrustExternalCARoot.crt > yourDomain.ca-bundle
Windows or DOS:
-- copy ComodoRSAAddTrustCA.crt + ComodoRSADomain/Organization/ExtendedvalidationSecureServerCA.crt + AddTrustExternalCARoot.crt yourDomain.ca-bundle

Or

-- copy ComodoSHA256SecureServerCA.crt + AddTrustExternalCARoot.crt yourDomain.ca-bundle
Note: 'yourDomain.ca-bundle' is only a place holder file name. You may call it anything you want.

Is It Possible To Generate Key File From Crtv

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