Category Archives: Security

openssl: Verifiy failed with error 3 at 0 depth lookup: unable to get certificate CRL

Hi,

openssl can verify certificates against the root CA/intermediate CA chain and also can check a crl list if a certificate is revoked.
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Linux: Place own/custom certificates in /etc/ssl/certs

Hi,

sometimes it is necessary to add an own root/intermediate CA top your machine CA store.

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C#: Import a rsa public key generated by openssl

Hi,

the C# (.NET 4) RSACryptoServiceProvider->ImportCspBlob methode has the ability to import RSA (public) keys.
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openssl: Sign a file and verify it.

Hi,

openssl can be used to create signature of a file and check the file against the signature to prevent unauthorized changes.

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openssl: List ciphersuites from SSL_CTX_set_cipher_list

Hi,

a customer needs a list of valid ciphersuites from a given allowed SSL_CTX_set_cipher_list.
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