![]() It will ask for to set password for certificate. PKCS#12 file is a way of storing private keys, and certificates in a single encrypted file. To convert CRT to PKCS#7, we can use # openssl crl2pkcs7 -nocrl -certfile domain.crt -out domain.p7b Convert CRT to PKCS#12 format: To convert a CRT to a DER, we can use # openssl x509 -in domain.crt -outform DER -out r Convert CRT to PKCS#7 To convert a CRT to a CER, we can use # openssl x509 -in domain.crt -outform DER -out domain.cer Convert CRT to DER format: # openssl pkcs12 -export -out domain.pfx -inkey privatekey.key -in domain.crt PFX file is a way of storing private keys, and certificates in a single encrypted file. # openssl rsa -in privatekey.key -out privatekey.pem -outform pem Convert CRT to PFX format: If the certificate is not open in text file then the certificate and key content is binary, To find out the format use # openssl x509 -in domain.crt -inform DER -textįor binary format CRT and KEY use # openssl x509 -in domain.crt -inform der -out domain.pem -outform pem # cat privatekey.key domain.crt > domain.pem We can read the contents of a certificate using # openssl x509 -in domain.crt -text If the certificate and key is in text format, not in binary format then certificate and key is already in PEM format. Convert CRT Certificates Convert CRT to PEM format: Use this combined domain.crt and privatekey.key to convert certificate into different formatsġ. (Primary SSL certificate: domain_name.crt) # cat DomainValidationSecureServerCA.crt AddTrustCA.crt AddTrustExternalCARoot.crt > domain.crt # cat intermediate.crt rootca.crt > domain.crt If we have a certificate bundle then we can combine them into one single certificate which contain domain certificate, intermediate certificate and root CA certificate. Use the following OpenSSL commands to convert SSL certificate to different formats on your own machine: Merge SSL Certificate bundle OpenSSL Commands to Convert SSL Certificates JKS is encrypted with a password used in a Java program. PPK is a private key file created by the putty key generator software used for ssh. PKCS#12 certificates are commonly used in Microsoft Windows environments. PKCS#12 certificates have a “.pfx” or “.p12” file extension. PKCS#12 is a format that is used to store SSL certificates, private keys, and any intermediate certificates. PKCS#12 (Public Key Cryptography Standards #12) Format:.PKCS#7 certificates are used by Microsoft Windows and Java Tomcat servers. PKCS#7 certificates have a “.p7b” or “.p7c” file extension. PKCS#7 is a format that is used to store SSL certificates, certificate chains, and any associated private keys. PKCS#7 (Public Key Cryptography Standards #7) Format:.DER certificates are less common than PEM certificates and are not supported by all web servers and applications. DER certificates have a “.der” or “.cer” file extension. DER (Distinguished Encoding Rules) Format:ĭER is a binary format that is used to store SSL certificates.PEM certificates are Base64-encoded ASCII files that contain the certificate, private key, and any intermediate certificates in a single file. PEM is the most commonly used SSL certificate format and is supported by most web servers and applications. Convert SSL Certificates SSL Certificate format and extension: SSL certificate format The OpenSSL convert SSL certificates to key, cer, pem, crt, pfx, der, p7b, p12, p7c, PKCS#12 and PKCS#7 format. If you want to create self-signed certificate using OpenSSL Click here or want to install latest OpenSSL 3.0 Click here However, SSL certificates are available in various formats such as CRT, PEM, DER, PFX, PKCS#7, PKCS#12, etc., which can create compatibility issues when using them with different servers and services. SSL certificates can be obtained from certificate authorities (CA) or self-signed using OpenSSL. ![]() In this blog, we will discuss the OpenSSL SSL certificate converter, a useful tool for converting SSL certificates from one format to another. ![]() OpenSSL is a widely used open-source tool that provides cryptographic functionality for SSL and TLS protocols. SSL certificates encrypt data and establish secure connections between users and websites, protecting sensitive information like passwords, credit card details, and other personal data. ![]() In the world of internet security, SSL certificates are crucial for ensuring that websites and online services are secure and safe to use. ![]()
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