Use PKCS#8 format for SSL private keys (#15594)

* Modify CA key file to use PKCS#8 instead of PKCS#1

* Output PKCS#8 not PKCS#1 (TraditionalOpenSSL)

chia/ssl/chia_ca.key

@@ -1,27 +1,28 @@
------BEGIN RSA PRIVATE KEY-----
-MIIEowIBAAKCAQEAzz/L219Zjb5CIKnUkpd2julGC+j3E97KUiuOalCH9wdqgpJi
-9nBqLccwPCSFXFew6CNBIBM+CW2jT3UVwgzjdXJ7pgtu8gWj0NQ6NqSLiXV2WbpZ
-ovfrVh3x7Z4bjPgI3ouWjyehUfmK1GPIld4BfUSQtPlUJ53+XT32GRizUy+b0CcJ
-84jp1XvyZAMajYnclFRNNJSw9WXtTlMUu+Z1M4K7c4ZPwEqgEnCgRc0TCaXj180v
-o7mCHJQoDiNSCRATwfH+kWxOOK/nePkq2t4mPSFaX8xAS4yILISIOWYn7sNgdy9D
-6gGNFo2SZ0FR3x9hjUjYEV3cPqg3BmNE3DDynQIDAQABAoIBAGupS4BJdx8gEAAh
-2VDRqAAzhHTZb8j9uoKXJ+NotEkKrDTqUMiOu0nOqOsFWdYPo9HjxoggFuEU+Hpl
-a4kj4uF3OG6Yj+jgLypjpV4PeoFM6M9R9BCp07In2i7DLLK9gvYA85SoVLBd/tW4
-hFH+Qy3M+ZNZ1nLCK4pKjtaYs0dpi5zLoVvpEcEem2O+aRpUPCZqkNwU0umATCfg
-ZGfFzgXI/XPJr8Uy+LVZOFp3PXXHfnZZD9T5AjO/ViBeqbMFuWQ8BpVOqapNPKj8
-xDY3ovw3uiAYPC7eLib3u/WoFelMc2OMX0QljLp5Y+FScFHAMxoco3AQdWSYvSQw
-b5xZmg0CgYEA6zKASfrw3EtPthkLR5NBmesI4RbbY6iFVhS5loLbzTtStvsus8EI
-6RQgLgAFF14H21YSHxb6dB1Mbo45BN83gmDpUvKPREslqD3YPMKFo5GXMmv+JhNo
-5Y9fhiOEnxzLJGtBB1HeGmg5NXp9mr2Ch9u8w/slfuCHckbA9AYvdxMCgYEA4ZR5
-zg73+UA1a6Pm93bLYZGj+hf7OaB/6Hiw9YxCBgDfWM9dJ48iz382nojT5ui0rClV
-5YAo8UCLh01Np9AbBZHuBdYm9IziuKNzTeK31UW+Tvbz+dEx7+PlYQffNOhcIgd+
-9SXjoZorQksImKdMGZld1lEReHuBawq92JQvtY8CgYEAtNwUws7xQLW5CjKf9d5K
-5+1Q2qYU9sG0JsmxHQhrtZoUtRjahOe/zlvnkvf48ksgh43cSYQF/Bw7lhhPyGtN
-6DhVs69KdB3FS2ajTbXXxjxCpEdfHDB4zW4+6ouNhD1ECTFgxBw0SuIye+lBhSiN
-o6NZuOr7nmFSRpIZ9ox7G3kCgYA4pvxMNtAqJekEpn4cChab42LGLX2nhFp7PMxc
-bqQqM8/j0vg3Nihs6isCd6SYKjstvZfX8m7V3/rquQxWp9oRdQvNJXJVGojaDBqq
-JdU7V6+qzzSIufQLpjV2P+7br7trxGwrDx/y9vAETynShLmE+FJrv6Jems3u3xy8
-psKwmwKBgG5uLzCyMvMB2KwI+f3np2LYVGG0Pl1jq6yNXSaBosAiF0y+IgUjtWY5
-EejO8oPWcb9AbqgPtrWaiJi17KiKv4Oyba5+y36IEtyjolWt0AB6F3oDK0X+Etw8
-j/xlvBNuzDL6gRJHQg1+d4dO8Lz54NDUbKW8jGl+N/7afGVpGmX9
------END RSA PRIVATE KEY-----
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----

chia/ssl/create_ssl.py

@@ -95,7 +95,7 @@ def generate_ca_signed_cert(ca_crt: bytes, ca_key: bytes, cert_out: Path, key_ou
     cert_pem = cert.public_bytes(encoding=serialization.Encoding.PEM)
     key_pem = cert_key.private_bytes(
         encoding=serialization.Encoding.PEM,
-        format=serialization.PrivateFormat.TraditionalOpenSSL,
+        format=serialization.PrivateFormat.PKCS8,
         encryption_algorithm=serialization.NoEncryption(),
     )
 
@@ -126,7 +126,7 @@ def make_ca_cert(cert_path: Path, key_path: Path):
     cert_pem = root_cert.public_bytes(encoding=serialization.Encoding.PEM)
     key_pem = root_key.private_bytes(
         encoding=serialization.Encoding.PEM,
-        format=serialization.PrivateFormat.TraditionalOpenSSL,
+        format=serialization.PrivateFormat.PKCS8,
         encryption_algorithm=serialization.NoEncryption(),
     )