Why Am I Getting \'x509: no DEK-Info header in block\' Error When Decrypting My PKCS8 Private Key in Go?

Troubleshooting Encrypted Private Key Decryption Error

When attempting to read an encrypted PKCS8 private key file in Go, developers may encounter the following error: "x509: no DEK-Info header in block." This error indicates that the library cannot decrypt the key.

The user provided an example key generation process using OpenSSL:

openssl genrsa -out file.pem -passout pass:file -aes256 1024
openssl pkcs8 -topk8 -inform pem -in file.pem -outform pem -out filePKCS8.pem

And attempted to decrypt the key in Go:

<code class="go">block, _ := pem.Decode(key)
return x509.DecryptPEMBlock(block, password)</code>

However, the standard Go library lacks a function to decrypt encrypted PKCS8 keys. To resolve this issue, consider using a third-party package like:

<code class="go">https://github.com/youmark/pkcs8/blob/master/pkcs8.go#L103</code>

This package provides the necessary functionality for decrypting encrypted PKCS8 keys in Go.

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