title: Can't get private key with openssl (no start line:pem_lib.c:703:Expecting: ANY PRIVATE KEY)
body: <p>I have a .key file, when I do</p>
  
  <p><code>openssl rsa -text -in file.key</code></p>
  
  <p>I get</p>
  
  <pre><code>unable to load Private Key
  140000419358368:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:703:Expecting: ANY PRIVATE KEY
  </code></pre>
  
  <hr>
  
  <p>Also I have a .cer file and when I do </p>
  
  <p><code>openssl x509 -text -in file.cer</code></p>
  
  <p>I get </p>
  
  <pre><code>unable to load certificate
  140387178489504:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:703:Expecting: TRUSTED CERTIFICATE
  </code></pre>
  
  <hr>
  
  <p>But if as pointed <a href="https://stackoverflow.com/a/20837236/3080244">here</a> I run the command like:</p>
  
  <p><code>openssl x509 -text -inform DER -in file.cer</code></p>
  
  <p>I get</p>
  
  <pre><code>Certificate:
      Data:
          Version: 3 (0x2)
          Some more information
          ...
  -----BEGIN CERTIFICATE-----
  MIIEdDCCA1ygAwIBAgIUMjAwMDEwMDAwMDAxMDAwMDU4NjcwDQYJKoZIhvcNAQEF
  ...
  -----END CERTIFICATE-----
  </code></pre>
  
  <p>But that doesn't seem to work with the key, because when I run</p>
  
  <p><code>openssl rsa -text -inform DER -in aaa010101aaa__csd_10.key</code></p>
  
  <p>I get </p>
  
  <pre><code>unable to load Private Key
  140004844304032:error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag:tasn_dec.c:1337:
  140004844304032:error:0D06C03A:asn1 encoding routines:ASN1_D2I_EX_PRIMITIVE:nested asn1 error:tasn_dec.c:849:
  140004844304032:error:0D08303A:asn1 encoding routines:ASN1_TEMPLATE_NOEXP_D2I:nested asn1 error:tasn_dec.c:769:Field=version, Type=RSA
  140004844304032:error:04093004:rsa routines:OLD_RSA_PRIV_DECODE:RSA lib:rsa_ameth.c:115:
  140004844304032:error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag:tasn_dec.c:1337:
  140004844304032:error:0D06C03A:asn1 encoding routines:ASN1_D2I_EX_PRIMITIVE:nested asn1 error:tasn_dec.c:849:
  140004844304032:error:0D08303A:asn1 encoding routines:ASN1_TEMPLATE_NOEXP_D2I:nested asn1 error:tasn_dec.c:769:Field=version, Type=PKCS8_PRIV_KEY_INFO
  </code></pre>
  
  <p><strong>How can I get the private key and its certificate?</strong></p>