Island: Revert "Island: remove unfinished ssh key processor"

This reverts commit 0cbfc79a92.

monkey/monkey_island/cc/services/telemetry/processing/credentials/secrets/ssh_key_processor.py

@@ -0,0 +1,42 @@
+from common.common_consts.credentials_type import CredentialComponentType
+from monkey_island.cc.models import Monkey
+from monkey_island.cc.server_utils.encryption import get_datastore_encryptor
+from monkey_island.cc.services.config import ConfigService
+
+
+class SSHKeyProcessingError(ValueError):
+    def __init__(self, msg=""):
+        self.msg = f"Error while processing ssh keypair: {msg}"
+        super().__init__(self.msg)
+
+
+def process_ssh_key(credentials: dict, monkey_guid: str):
+    if len(credentials["identities"]) != 1:
+        raise SSHKeyProcessingError(
+            f'SSH credentials have {len(credentials["identities"])}' f" users associated with it!"
+        )
+
+    for ssh_key in credentials["secrets"]:
+        if not ssh_key["credential_type"] == CredentialComponentType.SSH_KEYPAIR.value:
+            raise SSHKeyProcessingError("SSH credentials contain secrets that are not keypairs")
+
+        if not ssh_key["public_key"] or not ssh_key["private_key"]:
+            raise SSHKeyProcessingError("Private or public key missing!")
+
+        # TODO SSH key should be associated with IP that monkey exploited
+        ip = Monkey.get_single_monkey_by_guid(monkey_guid).ip_addresses[0]
+        username = credentials["identities"][0]["username"]
+
+        encrypt_system_info_ssh_keys(ssh_key)
+
+        ConfigService.ssh_add_keys(
+            user=username,
+            public_key=ssh_key["public_key"],
+            private_key=ssh_key["private_key"],
+            ip=ip,
+        )
+
+
+def encrypt_system_info_ssh_keys(ssh_key: dict):
+    for field in ["public_key", "private_key"]:
+        ssh_key[field] = get_datastore_encryptor().encrypt(ssh_key[field])