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SSL Converter

Convert SSL Certificates to different formats

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What this tool can

    Convert an SSL certificate to another format.
  • PEM to DER / Binary, P7B / PKCS # 7, PFX / PKCS # 12
  • DER / Binary to PEM
  • P7B / PKCS # 7 to PEM, PFX / PKCS # 12
  • PEM from PFX / PKCS # 12


PEM format

One of the most used certificate file formats. (Extensions are .pem, .crt, .cer, key)
Write text between '----- BEGIN CERTIFICATE -----' and '----- END CERTIFICATE -----'.
You can store server certificates, intermediate certificates, and private keys.
PEM format certificates are used by various servers including Apache.
You can combine the PEM certificate and private key into a single file, but most platforms require that you separate the certificate and private key.



DER format

This is a format encoded by the DER method. (Extensions are .der and .cer)
Certificates and private keys can be represented in DER format regardless of type.
This format is usually used on the Java platform.



PKCS # 7 / P7B

One file can contain multiple certificates and can be distributed including intermediate certificates.(Extensions are .spc, .p7a, .p7b, .p7c)
Write text between '----- BEGIN PKCS7 -----' and '----- END PKCS7 -----'.
The P7B format is supported on platforms such as Microsoft IIS and Tomcat.



PKCS # 12 / PFX

A format that can include an intermediate certificate, server certificate, and private key. (Extensions are .pfx and .p12)
Used by Windows for importing and exporting private keys and certificates.
* When converting PFX to PEM, it is necessary to open the resulting file with a text editor, enclose each certificate and private key in BEGIN / END, and save them in a text file (cert.cer, CA_Cert.cer, private.key, etc.)

Useful for

  • Converting a certificate that the server does not accept into a form that it accepts.
SSL Convert

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