We have created an Advanced Decoder that's available on our Cert Logik site.
Cert Logik is a collection of Certificate and PKI tools developed by Red Kestrel Consulting Limited.
Here are some of the features that the Advanced CSR and Cert Decoder provides
- Decodes X.509 Certificates
- Decodes SSL Certificates
- Decodes PKCS#7 Certificate Chains
- Decodes CSRs or PKCS#10 requests
- Validates CSR signatures
- Checks the key size of CSRs and Certificates
- Checks the subject field of CSRs and Certificates
- Checks a Debian weak key is not used in CSRs and Certificates
- Checks the signature algorithm of Certificates
- Checks the validity period of Certificates