SFTP external storage cannot read RSA private key entered in the web form: “Unable to read key”

[jeroen1602]

⚠️ This issue respects the following points: ⚠️

• This is not a troubleshooting question, general support matter, or webserver/proxy problem, but likely a bug (if unsure, ask the Community Help Forum).
• This issue is not already reported on Github OR solved at the Community Help Forum (I've searched!).
• I'm using a maintained major version of Nextcloud Server and tested against the latest patch level. (Supported major versions and current patch levels).
• I agree to follow Nextcloud's Code of Conduct.
• I've tried my best to provide clear reproduction steps that someone unfamiliar with this bug could use to reproduce it.

Bug description

I'm using files_external using the RSA private key authentication method.

However, when trying to use it after the update I'm getting the error Unable to read key from phpseclib3

I believe the problem is that the private key is stored without its enters. This is because the form for inserting the private key uses an input element and not a textarea element, so the enters of the key will be lost.

Setting the private key using: ./occ -vvv files_external:config --value-from-file <mount-id> private_key ./key.pem preserves the enters and fixes the issue.

Steps to reproduce

1. Create a new external storage
2. Select SFTP as the storage type
3. And RSA private key as the authentication method
4. Set up the rest of the form further
5. Try to open this external storage folder
6. Check the logs and see the Unable to read key error.

Expected behavior

It should store the private key correctly so it works.

Nextcloud Server version

35

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.5

Web server

Nginx

Database engine version

PostgreSQL

Is this bug present after an update or on a fresh install?

Upgraded to a MAJOR version (ex. 31 to 32)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

{
    "system": {
        "overwriteprotocol": "https",
        "htaccess.RewriteBase": "\/",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "apps_paths": [
            {
                "path": "\/var\/www\/html\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/www\/html\/custom_apps",
                "url": "\/custom_apps",
                "writable": true
            }
        ],
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
        ],
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "allow_local_remote_servers": true,
        "default_phone_region": "NL",
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "version": "35.0.0.10",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "theme": "",
        "log_type": "file",
        "logfile": "\/tmp\/nextcloud.log",
        "loglevel": 2,
        "maintenance": false,
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpauth": 1,
        "mail_smtpport": "587",
        "mail_smtpauthtype": "PLAIN",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "has_rebuilt_cache": true,
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "password": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "maintenance_window_start": 1,
        "serverid": "0"
    }
}

List of activated Apps

Enabled:
  - activity: 8.0.0
  - admin_audit: 2.0.0-dev.0
  - app_api: 35.0.0
  - appstore: 2.0.0-dev.0
  - bruteforcesettings: 8.0.0
  - calendar: 6.6.1
  - circles: 35.0.0
  - cloud_federation_api: 2.0.0-dev.0
  - comments: 2.0.0-dev.0
  - contacts: 8.9.0
  - contactsinteraction: 2.0.0-dev.0
  - dashboard: 8.0.0-dev.0
  - dav: 2.0.0-dev.1
  - federatedfilesharing: 2.0.0-dev.1
  - federation: 2.0.0-dev.0
  - files: 3.0.0-dev.0
  - files_downloadlimit: 5.3.0
  - files_external: 2.0.0-dev.0
  - files_lock: 35.0.0
  - files_pdfviewer: 8.0.0
  - files_reminders: 2.0.0-dev.0
  - files_sharing: 2.0.0-dev.1
  - files_trashbin: 2.0.0-dev.0
  - files_versions: 2.0.0-dev.0
  - firstrunwizard: 8.0.0
  - logreader: 8.0.0
  - lookup_server_connector: 2.0.0-dev.0
  - nextcloud_announcements: 7.0.0
  - notes: 6.1.0
  - notifications: 8.0.0
  - oauth2: 2.0.0-dev.0
  - office: 1.1.0
  - password_policy: 7.0.0
  - photos: 8.0.0
  - privacy: 7.0.0
  - profile: 2.0.0-dev.0
  - provisioning_api: 2.0.0-dev.0
  - recommendations: 8.0.0
  - related_resources: 6.0.0
  - richdocuments: 12.0.0
  - serverinfo: 7.0.0
  - settings: 2.0.0-dev.0
  - sharebymail: 2.0.0-dev.0
  - sharing: 1.0.4
  - support: 7.0.0
  - survey_client: 7.0.0
  - suspicious_login: 13.0.0
  - systemtags: 2.0.0-dev.0
  - text: 9.0.0
  - theming: 3.0.0-dev.0
  - twofactor_backupcodes: 2.0.0-dev.0
  - twofactor_nextcloud_notification: 9.0.0
  - twofactor_totp: 17.1.0
  - twofactor_webauthn: 2.7.1
  - updatenotification: 2.0.0-dev.0
  - user_oidc: 8.11.0
  - user_status: 2.0.0-dev.0
  - viewer: 8.0.0
  - weather_status: 2.0.0-dev.0
  - webhook_listeners: 2.0.0-dev.0
  - workflowengine: 3.0.0-dev.0
Disabled:
  - carnet: 0.25.13 (installed 0.25.13)
  - encryption: 3.0.0-dev.0
  - files_antivirus: 6.3.0 (installed 6.3.0)
  - previewgenerator: 5.13.0 (installed 5.13.0)
  - sharelisting: 1.3.0 (installed 1.3.0)
  - tasks: 0.18.0 (installed 0.18.0)
  - user_ldap: 2.0.0-dev.0

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

{
	"reqId": "hzaIhqkFWcPeo0nTPRi7",
	"level": 2,
	"time": "2026-09-23T18:48:07+00:00",
	"remoteAddr": "2001:4c3c:7300:48de:4691:8e78:5b95:1791",
	"user": "jeroen",
	"app": "no app in context",
	"method": "PROPFIND",
	"url": "/remote.php/dav/files/jeroen/",
	"scriptName": "/remote.php",
	"message": "Error while getting quota info, using root quota",
	"userAgent": "Mozilla/5.0 (X11; Linux x86_64; rv:156.0) Gecko/20100101 Firefox/156.0",
	"version": "35.0.0.10",
	"exception": {
		"Exception": "OCP\\Files\\StorageNotAvailableException",
		"Message": "Unable to read key",
		"Code": 0,
		"Trace": [
			{
				"file": "/var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php",
				"line": 323,
				"function": "getAvailability",
				"class": "OC\\Files\\Storage\\FailedStorage",
				"type": "->",
				"args": []
			},
			{
				"file": "/var/www/html/lib/private/Files/Storage/Wrapper/Availability.php",
				"line": 61,
				"function": "getAvailability",
				"class": "OC\\Files\\Storage\\Wrapper\\Wrapper",
				"type": "->",
				"args": []
			},
			{
				"file": "/var/www/html/lib/private/Files/Storage/Wrapper/Availability.php",
				"line": 74,
				"function": "isAvailable",
				"class": "OC\\Files\\Storage\\Wrapper\\Availability",
				"type": "->",
				"args": []
			},
			{
				"file": "/var/www/html/lib/private/Files/Storage/Wrapper/Availability.php",
				"line": 83,
				"function": "checkAvailability",
				"class": "OC\\Files\\Storage\\Wrapper\\Availability",
				"type": "->",
				"args": []
			},
			{
				"file": "/var/www/html/lib/private/Files/Storage/Wrapper/Availability.php",
				"line": 217,
				"function": "handleAvailability",
				"class": "OC\\Files\\Storage\\Wrapper\\Availability",
				"type": "->",
				"args": [
					"free_space",
					""
				]
			},
			{
				"file": "/var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php",
				"line": 186,
				"function": "free_space",
				"class": "OC\\Files\\Storage\\Wrapper\\Availability",
				"type": "->",
				"args": [
					""
				]
			},
			{
				"file": "/var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php",
				"line": 186,
				"function": "free_space",
				"class": "OC\\Files\\Storage\\Wrapper\\Wrapper",
				"type": "->",
				"args": [
					""
				]
			},
			{
				"file": "/var/www/html/lib/private/legacy/OC_Helper.php",
				"line": 231,
				"function": "free_space",
				"class": "OC\\Files\\Storage\\Wrapper\\Wrapper",
				"type": "->",
				"args": [
					""
				]
			},
			{
				"file": "/var/www/html/apps/dav/lib/Connector/Sabre/Directory.php",
				"line": 349,
				"function": "getStorageInfo",
				"class": "OC_Helper",
				"type": "::",
				"args": [
					"/home-Jeroen",
					{
						"__class__": "OC\\Files\\Node\\Folder"
					},
					false
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/CorePlugin.php",
				"line": 770,
				"function": "getQuotaInfo",
				"class": "OCA\\DAV\\Connector\\Sabre\\Directory",
				"type": "->",
				"args": []
			},
			{
				"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/PropFind.php",
				"line": 95,
				"function": "{closure:Sabre\\DAV\\CorePlugin::propFind():768}",
				"class": "Sabre\\DAV\\CorePlugin",
				"type": "->",
				"args": [
					"*** sensitive parameters replaced ***"
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/CorePlugin.php",
				"line": 768,
				"function": "handle",
				"class": "Sabre\\DAV\\PropFind",
				"type": "->",
				"args": [
					"{DAV:}quota-available-bytes",
					{
						"__class__": "Closure"
					}
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
				"line": 89,
				"function": "propFind",
				"class": "Sabre\\DAV\\CorePlugin",
				"type": "->",
				"args": [
					{
						"__class__": "Sabre\\DAV\\PropFind"
					},
					{
						"__class__": "OCA\\DAV\\Connector\\Sabre\\Directory"
					}
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
				"line": 1052,
				"function": "emit",
				"class": "Sabre\\DAV\\Server",
				"type": "->",
				"args": [
					"propFind",
					[
						{
							"__class__": "Sabre\\DAV\\PropFind"
						},
						{
							"__class__": "OCA\\DAV\\Connector\\Sabre\\Directory"
						}
					]
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
				"line": 984,
				"function": "getPropertiesByNode",
				"class": "Sabre\\DAV\\Server",
				"type": "->",
				"args": [
					{
						"__class__": "Sabre\\DAV\\PropFind"
					},
					{
						"__class__": "OCA\\DAV\\Connector\\Sabre\\Directory"
					}
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
				"line": 1664,
				"function": "getPropertiesIteratorForPath",
				"class": "Sabre\\DAV\\Server",
				"type": "->",
				"args": [
					"files/jeroen",
					[
						"{DAV:}getcontentlength",
						"{DAV:}getcontenttype",
						"{DAV:}getetag",
						"{DAV:}getlastmodified",
						"{DAV:}creationdate",
						"And 33 more entries, set log level to debug to see all entries"
					],
					1
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
				"line": 1649,
				"function": "writeMultiStatus",
				"class": "Sabre\\DAV\\Server",
				"type": "->",
				"args": [
					{
						"__class__": "Sabre\\Xml\\Writer",
						"elementMap": [],
						"contextUri": "/remote.php/dav/",
						"namespaceMap": {
							"DAV:": "d",
							"http://sabredav.org/ns": "s",
							"http://owncloud.org/ns": "oc",
							"http://nextcloud.org/ns": "nc"
						},
						"classMap": []
					},
					{
						"__class__": "Generator"
					},
					false
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/CorePlugin.php",
				"line": 346,
				"function": "generateMultiStatus",
				"class": "Sabre\\DAV\\Server",
				"type": "->",
				"args": [
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						"__class__": "Generator"
					},
					false
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
				"line": 89,
				"function": "httpPropFind",
				"class": "Sabre\\DAV\\CorePlugin",
				"type": "->",
				"args": [
					{
						"__class__": "Sabre\\HTTP\\Request"
					},
					{
						"__class__": "Sabre\\HTTP\\Response"
					}
				]
			},
			{
				"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
				"line": 472,
				"function": "emit",
				"class": "Sabre\\DAV\\Server",
				"type": "->",
				"args": [
					"method:PROPFIND",
					[
						{
							"__class__": "Sabre\\HTTP\\Request"
						},
						{
							"__class__": "Sabre\\HTTP\\Response"
						}
					]
				]
			},
			{
				"file": "/var/www/html/apps/dav/lib/Connector/Sabre/Server.php",
				"line": 216,
				"function": "invokeMethod",
				"class": "Sabre\\DAV\\Server",
				"type": "->",
				"args": [
					{
						"__class__": "Sabre\\HTTP\\Request"
					},
					{
						"__class__": "Sabre\\HTTP\\Response"
					}
				]
			},
			{
				"file": "/var/www/html/apps/dav/lib/Server.php",
				"line": 436,
				"function": "start",
				"class": "OCA\\DAV\\Connector\\Sabre\\Server",
				"type": "->",
				"args": []
			},
			{
				"file": "/var/www/html/apps/dav/appinfo/v2/remote.php",
				"line": 25,
				"function": "exec",
				"class": "OCA\\DAV\\Server",
				"type": "->",
				"args": []
			},
			{
				"file": "/var/www/html/remote.php",
				"line": 158,
				"args": [
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				],
				"function": "require"
			},
			{
				"file": "/var/www/html/lib/OC.php",
				"line": 1397,
				"function": "{closure:/var/www/html/remote.php:102}",
				"args": [
					"*** sensitive parameters replaced ***"
				]
			},
			{
				"file": "/var/www/html/remote.php",
				"line": 102,
				"function": "handleRequests",
				"class": "OC",
				"type": "::",
				"args": [
					{
						"__class__": "Closure"
					}
				]
			}
		],
		"File": "/var/www/html/lib/private/Files/Storage/FailedStorage.php",
		"Line": 225,
		"Hint": "Storage is temporarily not available",
		"Previous": {
			"Exception": "OCP\\Files\\StorageNotAvailableException",
			"Message": "Unable to read key",
			"Code": 0,
			"Trace": [
				{
					"file": "/var/www/html/apps/files_external/lib/Config/ConfigAdapter.php",
					"line": 124,
					"function": "getAvailability",
					"class": "OC\\Files\\Storage\\FailedStorage",
					"type": "->",
					"args": []
				},
				{
					"function": "{closure:OCA\\Files_External\\Config\\ConfigAdapter::getAvailableStorages():122}",
					"class": "OCA\\Files_External\\Config\\ConfigAdapter",
					"type": "->",
					"args": [
						"*** sensitive parameters replaced ***"
					]
				},
				{
					"file": "/var/www/html/apps/files_external/lib/Config/ConfigAdapter.php",
					"line": 122,
					"function": "array_map",
					"args": [
						{
							"__class__": "Closure"
						},
						{
							"6": "*** sensitive parameters replaced ***",
							"7": "*** sensitive parameters replaced ***",
							"8": "*** sensitive parameters replaced ***",
							"14": "*** sensitive parameters replaced ***"
						},
						{
							"6": "*** sensitive parameters replaced ***",
							"7": "*** sensitive parameters replaced ***",
							"8": "*** sensitive parameters replaced ***",
							"14": "*** sensitive parameters replaced ***"
						}
					]
				},
				{
					"file": "/var/www/html/apps/files_external/lib/Config/ConfigAdapter.php",
					"line": 144,
					"function": "getAvailableStorages",
					"class": "OCA\\Files_External\\Config\\ConfigAdapter",
					"type": "->",
					"args": [
						{
							"6": "*** sensitive parameters replaced ***",
							"7": "*** sensitive parameters replaced ***",
							"8": "*** sensitive parameters replaced ***",
							"14": "*** sensitive parameters replaced ***"
						},
						{
							"__class__": "OC\\User\\User"
						}
					]
				},
				{
					"file": "/var/www/html/lib/private/Files/Config/MountProviderCollection.php",
					"line": 62,
					"function": "getMountsForUser",
					"class": "OCA\\Files_External\\Config\\ConfigAdapter",
					"type": "->",
					"args": [
						{
							"__class__": "OC\\User\\User"
						},
						{
							"__class__": "OC\\Files\\Storage\\StorageFactory"
						}
					]
				},
				{
					"file": "/var/www/html/lib/private/Files/Config/MountProviderCollection.php",
					"line": 177,
					"function": "getMountsFromProvider",
					"class": "OC\\Files\\Config\\MountProviderCollection",
					"type": "->",
					"args": [
						{
							"__class__": "OCA\\Files_External\\Config\\ConfigAdapter"
						},
						{
							"__class__": "OC\\User\\User"
						},
						{
							"__class__": "OC\\Files\\Storage\\StorageFactory"
						}
					]
				},
				{
					"file": "/var/www/html/lib/private/Files/SetupManager.php",
					"line": 290,
					"function": "addMountForUser",
					"class": "OC\\Files\\Config\\MountProviderCollection",
					"type": "->",
					"args": [
						{
							"__class__": "OC\\User\\User"
						},
						{
							"__class__": "OC\\Files\\Mount\\Manager"
						},
						{
							"__class__": "Closure"
						}
					]
				},
				{
					"file": "/var/www/html/lib/private/Files/SetupManager.php",
					"line": 415,
					"function": "{closure:OC\\Files\\SetupManager::setupForUser():289}",
					"class": "OC\\Files\\SetupManager",
					"type": "->",
					"args": [
						"*** sensitive parameters replaced ***"
					]
				},
				{
					"file": "/var/www/html/lib/private/Files/SetupManager.php",
					"line": 289,
					"function": "setupForUserWith",
					"class": "OC\\Files\\SetupManager",
					"type": "->",
					"args": [
						{
							"__class__": "OC\\User\\User"
						},
						{
							"__class__": "Closure"
						}
					]
				},
				{
					"file": "/var/www/html/lib/private/Files/SetupManager.php",
					"line": 501,
					"function": "setupForUser",
					"class": "OC\\Files\\SetupManager",
					"type": "->",
					"args": [
						{
							"__class__": "OC\\User\\User"
						}
					]
				},
				{
					"file": "/var/www/html/lib/private/Files/Mount/Manager.php",
					"line": 116,
					"function": "setupForPath",
					"class": "OC\\Files\\SetupManager",
					"type": "->",
					"args": [
						"/jeroen/files",
						true
					]
				},
				{
					"file": "/var/www/html/lib/private/Files/View.php",
					"line": 1577,
					"function": "findIn",
					"class": "OC\\Files\\Mount\\Manager",
					"type": "->",
					"args": [
						"/jeroen/files"
					]
				},
				{
					"file": "/var/www/html/lib/private/Files/Node/Folder.php",
					"line": 89,
					"function": "getDirectoryContent",
					"class": "OC\\Files\\View",
					"type": "->",
					"args": [
						"/jeroen/files",
						null,
						{
							"__class__": "OC\\Files\\Node\\LazyUserFolder"
						}
					]
				},
				{
					"file": "/var/www/html/apps/dav/lib/Connector/Sabre/Directory.php",
					"line": 267,
					"function": "getDirectoryListing",
					"class": "OC\\Files\\Node\\Folder",
					"type": "->",
					"args": []
				},
				{
					"file": "/var/www/html/apps/dav/lib/Connector/Sabre/CommentPropertiesPlugin.php",
					"line": 59,
					"function": "getChildren",
					"class": "OCA\\DAV\\Connector\\Sabre\\Directory",
					"type": "->",
					"args": []
				},
				{
					"file": "/var/www/html/apps/dav/lib/Connector/Sabre/CommentPropertiesPlugin.php",
					"line": 108,
					"function": "cacheDirectory",
					"class": "OCA\\DAV\\Connector\\Sabre\\CommentPropertiesPlugin",
					"type": "->",
					"args": [
						{
							"__class__": "OCA\\DAV\\Files\\FilesHome"
						},
						{
							"__class__": "Sabre\\DAV\\PropFind"
						}
					]
				},
				{
					"file": "/var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
					"line": 89,
					"function": "preloadCollection",
					"class": "OCA\\DAV\\Connector\\Sabre\\CommentPropertiesPlugin",
					"type": "->",
					"args": [
						{
							"__class__": "Sabre\\DAV\\PropFind"
						},
						{
							"__class__": "OCA\\DAV\\Files\\FilesHome"
						}
					]
				},
				{
					"file": "/var/www/html/apps/dav/lib/Connector/Sabre/PropFindPreloadNotifyPlugin.php",
					"line": 46,
					"function": "emit",
					"class": "Sabre\\DAV\\Server",
					"type": "->",
					"args": [
						"preloadCollection",
						[
							{
								"__class__": "Sabre\\DAV\\PropFind"
							},
							{
								"__class__": "OCA\\DAV\\Files\\FilesHome"
							}
						]
					]
				},
				{
					"file": "/var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
					"line": 89,
					"function": "collectionPreloadNotifier",
					"class": "OCA\\DAV\\Connector\\Sabre\\PropFindPreloadNotifyPlugin",
					"type": "->",
					"args": [
						{
							"__class__": "Sabre\\DAV\\PropFind"
						},
						{
							"__class__": "OCA\\DAV\\Files\\FilesHome"
						}
					]
				},
				{
					"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
					"line": 1052,
					"function": "emit",
					"class": "Sabre\\DAV\\Server",
					"type": "->",
					"args": [
						"propFind",
						[
							{
								"__class__": "Sabre\\DAV\\PropFind"
							},
							{
								"__class__": "OCA\\DAV\\Files\\FilesHome"
							}
						]
					]
				},
				{
					"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
					"line": 984,
					"function": "getPropertiesByNode",
					"class": "Sabre\\DAV\\Server",
					"type": "->",
					"args": [
						{
							"__class__": "Sabre\\DAV\\PropFind"
						},
						{
							"__class__": "OCA\\DAV\\Files\\FilesHome"
						}
					]
				},
				{
					"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
					"line": 1664,
					"function": "getPropertiesIteratorForPath",
					"class": "Sabre\\DAV\\Server",
					"type": "->",
					"args": [
						"files/jeroen",
						[
							"{DAV:}getcontentlength",
							"{DAV:}getcontenttype",
							"{DAV:}getetag",
							"{DAV:}getlastmodified",
							"{DAV:}creationdate",
							"And 33 more entries, set log level to debug to see all entries"
						],
						1
					]
				},
				{
					"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
					"line": 1649,
					"function": "writeMultiStatus",
					"class": "Sabre\\DAV\\Server",
					"type": "->",
					"args": [
						{
							"__class__": "Sabre\\Xml\\Writer",
							"elementMap": [],
							"contextUri": "/remote.php/dav/",
							"namespaceMap": {
								"DAV:": "d",
								"http://sabredav.org/ns": "s",
								"http://owncloud.org/ns": "oc",
								"http://nextcloud.org/ns": "nc"
							},
							"classMap": []
						},
						{
							"__class__": "Generator"
						},
						false
					]
				},
				{
					"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/CorePlugin.php",
					"line": 346,
					"function": "generateMultiStatus",
					"class": "Sabre\\DAV\\Server",
					"type": "->",
					"args": [
						{
							"__class__": "Generator"
						},
						false
					]
				},
				{
					"file": "/var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
					"line": 89,
					"function": "httpPropFind",
					"class": "Sabre\\DAV\\CorePlugin",
					"type": "->",
					"args": [
						{
							"__class__": "Sabre\\HTTP\\Request"
						},
						{
							"__class__": "Sabre\\HTTP\\Response"
						}
					]
				},
				{
					"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
					"line": 472,
					"function": "emit",
					"class": "Sabre\\DAV\\Server",
					"type": "->",
					"args": [
						"method:PROPFIND",
						[
							{
								"__class__": "Sabre\\HTTP\\Request"
							},
							{
								"__class__": "Sabre\\HTTP\\Response"
							}
						]
					]
				},
				{
					"file": "/var/www/html/apps/dav/lib/Connector/Sabre/Server.php",
					"line": 216,
					"function": "invokeMethod",
					"class": "Sabre\\DAV\\Server",
					"type": "->",
					"args": [
						{
							"__class__": "Sabre\\HTTP\\Request"
						},
						{
							"__class__": "Sabre\\HTTP\\Response"
						}
					]
				},
				{
					"file": "/var/www/html/apps/dav/lib/Server.php",
					"line": 436,
					"function": "start",
					"class": "OCA\\DAV\\Connector\\Sabre\\Server",
					"type": "->",
					"args": []
				},
				{
					"file": "/var/www/html/apps/dav/appinfo/v2/remote.php",
					"line": 25,
					"function": "exec",
					"class": "OCA\\DAV\\Server",
					"type": "->",
					"args": []
				},
				{
					"file": "/var/www/html/remote.php",
					"line": 158,
					"args": [
						"/var/www/html/apps/dav/appinfo/v2/remote.php"
					],
					"function": "require"
				},
				{
					"file": "/var/www/html/lib/OC.php",
					"line": 1397,
					"function": "{closure:/var/www/html/remote.php:102}",
					"args": [
						"*** sensitive parameters replaced ***"
					]
				},
				{
					"file": "/var/www/html/remote.php",
					"line": 102,
					"function": "handleRequests",
					"class": "OC",
					"type": "::",
					"args": [
						{
							"__class__": "Closure"
						}
					]
				}
			],
			"File": "/var/www/html/lib/private/Files/Storage/FailedStorage.php",
			"Line": 225,
			"Hint": "Storage is temporarily not available",
			"Previous": {
				"Exception": "phpseclib3\\Exception\\NoKeyLoadedException",
				"Message": "Unable to read key",
				"Code": 0,
				"Trace": [
					{
						"file": "/var/www/html/apps/files_external/lib/Lib/Auth/PublicKey/RSAPrivateKey.php",
						"line": 56,
						"function": "load",
						"class": "phpseclib3\\Crypt\\PublicKeyLoader",
						"type": "::",
						"args": [
							false,
							""
						]
					},
					{
						"file": "/var/www/html/apps/files_external/lib/Config/ConfigAdapter.php",
						"line": 77,
						"function": "manipulateStorageConfig",
						"class": "OCA\\Files_External\\Lib\\Auth\\PublicKey\\RSAPrivateKey",
						"type": "->",
						"args": [
							"*** sensitive parameters replaced ***",
							{
								"__class__": "OC\\User\\User"
							}
						]
					},
					{
						"file": "/var/www/html/apps/files_external/lib/Config/ConfigAdapter.php",
						"line": 82,
						"function": "prepareStorageConfig",
						"class": "OCA\\Files_External\\Config\\ConfigAdapter",
						"type": "->",
						"args": [
							"*** sensitive parameters replaced ***",
							{
								"__class__": "OC\\User\\User"
							}
						]
					},
					{
						"file": "/var/www/html/apps/files_external/lib/Config/ConfigAdapter.php",
						"line": 111,
						"function": "constructStorageForUser",
						"class": "OCA\\Files_External\\Config\\ConfigAdapter",
						"type": "->",
						"args": [
							{
								"__class__": "OC\\User\\User"
							},
							"*** sensitive parameters replaced ***"
						]
					},
					{
						"function": "{closure:OCA\\Files_External\\Config\\ConfigAdapter::getAvailableStorages():109}",
						"class": "OCA\\Files_External\\Config\\ConfigAdapter",
						"type": "->",
						"args": [
							"*** sensitive parameters replaced ***"
						]
					},
					{
						"file": "/var/www/html/apps/files_external/lib/Config/ConfigAdapter.php",
						"line": 109,
						"function": "array_map",
						"args": [
							{
								"__class__": "Closure"
							},
							{
								"6": "*** sensitive parameters replaced ***",
								"7": "*** sensitive parameters replaced ***",
								"8": "*** sensitive parameters replaced ***",
								"14": "*** sensitive parameters replaced ***"
							}
						]
					},
					{
						"file": "/var/www/html/apps/files_external/lib/Config/ConfigAdapter.php",
						"line": 144,
						"function": "getAvailableStorages",
						"class": "OCA\\Files_External\\Config\\ConfigAdapter",
						"type": "->",
						"args": [
							{
								"6": "*** sensitive parameters replaced ***",
								"7": "*** sensitive parameters replaced ***",
								"8": "*** sensitive parameters replaced ***",
								"14": "*** sensitive parameters replaced ***"
							},
							{
								"__class__": "OC\\User\\User"
							}
						]
					},
					{
						"file": "/var/www/html/lib/private/Files/Config/MountProviderCollection.php",
						"line": 62,
						"function": "getMountsForUser",
						"class": "OCA\\Files_External\\Config\\ConfigAdapter",
						"type": "->",
						"args": [
							{
								"__class__": "OC\\User\\User"
							},
							{
								"__class__": "OC\\Files\\Storage\\StorageFactory"
							}
						]
					},
					{
						"file": "/var/www/html/lib/private/Files/Config/MountProviderCollection.php",
						"line": 177,
						"function": "getMountsFromProvider",
						"class": "OC\\Files\\Config\\MountProviderCollection",
						"type": "->",
						"args": [
							{
								"__class__": "OCA\\Files_External\\Config\\ConfigAdapter"
							},
							{
								"__class__": "OC\\User\\User"
							},
							{
								"__class__": "OC\\Files\\Storage\\StorageFactory"
							}
						]
					},
					{
						"file": "/var/www/html/lib/private/Files/SetupManager.php",
						"line": 290,
						"function": "addMountForUser",
						"class": "OC\\Files\\Config\\MountProviderCollection",
						"type": "->",
						"args": [
							{
								"__class__": "OC\\User\\User"
							},
							{
								"__class__": "OC\\Files\\Mount\\Manager"
							},
							{
								"__class__": "Closure"
							}
						]
					},
					{
						"file": "/var/www/html/lib/private/Files/SetupManager.php",
						"line": 415,
						"function": "{closure:OC\\Files\\SetupManager::setupForUser():289}",
						"class": "OC\\Files\\SetupManager",
						"type": "->",
						"args": [
							"*** sensitive parameters replaced ***"
						]
					},
					{
						"file": "/var/www/html/lib/private/Files/SetupManager.php",
						"line": 289,
						"function": "setupForUserWith",
						"class": "OC\\Files\\SetupManager",
						"type": "->",
						"args": [
							{
								"__class__": "OC\\User\\User"
							},
							{
								"__class__": "Closure"
							}
						]
					},
					{
						"file": "/var/www/html/lib/private/Files/SetupManager.php",
						"line": 501,
						"function": "setupForUser",
						"class": "OC\\Files\\SetupManager",
						"type": "->",
						"args": [
							{
								"__class__": "OC\\User\\User"
							}
						]
					},
					{
						"file": "/var/www/html/lib/private/Files/Mount/Manager.php",
						"line": 116,
						"function": "setupForPath",
						"class": "OC\\Files\\SetupManager",
						"type": "->",
						"args": [
							"/jeroen/files",
							true
						]
					},
					{
						"file": "/var/www/html/lib/private/Files/View.php",
						"line": 1577,
						"function": "findIn",
						"class": "OC\\Files\\Mount\\Manager",
						"type": "->",
						"args": [
							"/jeroen/files"
						]
					},
					{
						"file": "/var/www/html/lib/private/Files/Node/Folder.php",
						"line": 89,
						"function": "getDirectoryContent",
						"class": "OC\\Files\\View",
						"type": "->",
						"args": [
							"/jeroen/files",
							null,
							{
								"__class__": "OC\\Files\\Node\\LazyUserFolder"
							}
						]
					},
					{
						"file": "/var/www/html/apps/dav/lib/Connector/Sabre/Directory.php",
						"line": 267,
						"function": "getDirectoryListing",
						"class": "OC\\Files\\Node\\Folder",
						"type": "->",
						"args": []
					},
					{
						"file": "/var/www/html/apps/dav/lib/Connector/Sabre/CommentPropertiesPlugin.php",
						"line": 59,
						"function": "getChildren",
						"class": "OCA\\DAV\\Connector\\Sabre\\Directory",
						"type": "->",
						"args": []
					},
					{
						"file": "/var/www/html/apps/dav/lib/Connector/Sabre/CommentPropertiesPlugin.php",
						"line": 108,
						"function": "cacheDirectory",
						"class": "OCA\\DAV\\Connector\\Sabre\\CommentPropertiesPlugin",
						"type": "->",
						"args": [
							{
								"__class__": "OCA\\DAV\\Files\\FilesHome"
							},
							{
								"__class__": "Sabre\\DAV\\PropFind"
							}
						]
					},
					{
						"file": "/var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
						"line": 89,
						"function": "preloadCollection",
						"class": "OCA\\DAV\\Connector\\Sabre\\CommentPropertiesPlugin",
						"type": "->",
						"args": [
							{
								"__class__": "Sabre\\DAV\\PropFind"
							},
							{
								"__class__": "OCA\\DAV\\Files\\FilesHome"
							}
						]
					},
					{
						"file": "/var/www/html/apps/dav/lib/Connector/Sabre/PropFindPreloadNotifyPlugin.php",
						"line": 46,
						"function": "emit",
						"class": "Sabre\\DAV\\Server",
						"type": "->",
						"args": [
							"preloadCollection",
							[
								{
									"__class__": "Sabre\\DAV\\PropFind"
								},
								{
									"__class__": "OCA\\DAV\\Files\\FilesHome"
								}
							]
						]
					},
					{
						"file": "/var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
						"line": 89,
						"function": "collectionPreloadNotifier",
						"class": "OCA\\DAV\\Connector\\Sabre\\PropFindPreloadNotifyPlugin",
						"type": "->",
						"args": [
							{
								"__class__": "Sabre\\DAV\\PropFind"
							},
							{
								"__class__": "OCA\\DAV\\Files\\FilesHome"
							}
						]
					},
					{
						"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
						"line": 1052,
						"function": "emit",
						"class": "Sabre\\DAV\\Server",
						"type": "->",
						"args": [
							"propFind",
							[
								{
									"__class__": "Sabre\\DAV\\PropFind"
								},
								{
									"__class__": "OCA\\DAV\\Files\\FilesHome"
								}
							]
						]
					},
					{
						"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
						"line": 984,
						"function": "getPropertiesByNode",
						"class": "Sabre\\DAV\\Server",
						"type": "->",
						"args": [
							{
								"__class__": "Sabre\\DAV\\PropFind"
							},
							{
								"__class__": "OCA\\DAV\\Files\\FilesHome"
							}
						]
					},
					{
						"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
						"line": 1664,
						"function": "getPropertiesIteratorForPath",
						"class": "Sabre\\DAV\\Server",
						"type": "->",
						"args": [
							"files/jeroen",
							[
								"{DAV:}getcontentlength",
								"{DAV:}getcontenttype",
								"{DAV:}getetag",
								"{DAV:}getlastmodified",
								"{DAV:}creationdate",
								"And 33 more entries, set log level to debug to see all entries"
							],
							1
						]
					},
					{
						"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
						"line": 1649,
						"function": "writeMultiStatus",
						"class": "Sabre\\DAV\\Server",
						"type": "->",
						"args": [
							{
								"__class__": "Sabre\\Xml\\Writer",
								"elementMap": [],
								"contextUri": "/remote.php/dav/",
								"namespaceMap": {
									"DAV:": "d",
									"http://sabredav.org/ns": "s",
									"http://owncloud.org/ns": "oc",
									"http://nextcloud.org/ns": "nc"
								},
								"classMap": []
							},
							{
								"__class__": "Generator"
							},
							false
						]
					},
					{
						"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/CorePlugin.php",
						"line": 346,
						"function": "generateMultiStatus",
						"class": "Sabre\\DAV\\Server",
						"type": "->",
						"args": [
							{
								"__class__": "Generator"
							},
							false
						]
					},
					{
						"file": "/var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
						"line": 89,
						"function": "httpPropFind",
						"class": "Sabre\\DAV\\CorePlugin",
						"type": "->",
						"args": [
							{
								"__class__": "Sabre\\HTTP\\Request"
							},
							{
								"__class__": "Sabre\\HTTP\\Response"
							}
						]
					},
					{
						"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
						"line": 472,
						"function": "emit",
						"class": "Sabre\\DAV\\Server",
						"type": "->",
						"args": [
							"method:PROPFIND",
							[
								{
									"__class__": "Sabre\\HTTP\\Request"
								},
								{
									"__class__": "Sabre\\HTTP\\Response"
								}
							]
						]
					},
					{
						"file": "/var/www/html/apps/dav/lib/Connector/Sabre/Server.php",
						"line": 216,
						"function": "invokeMethod",
						"class": "Sabre\\DAV\\Server",
						"type": "->",
						"args": [
							{
								"__class__": "Sabre\\HTTP\\Request"
							},
							{
								"__class__": "Sabre\\HTTP\\Response"
							}
						]
					},
					{
						"file": "/var/www/html/apps/dav/lib/Server.php",
						"line": 436,
						"function": "start",
						"class": "OCA\\DAV\\Connector\\Sabre\\Server",
						"type": "->",
						"args": []
					},
					{
						"file": "/var/www/html/apps/dav/appinfo/v2/remote.php",
						"line": 25,
						"function": "exec",
						"class": "OCA\\DAV\\Server",
						"type": "->",
						"args": []
					},
					{
						"file": "/var/www/html/remote.php",
						"line": 158,
						"args": [
							"/var/www/html/apps/dav/appinfo/v2/remote.php"
						],
						"function": "require"
					},
					{
						"file": "/var/www/html/lib/OC.php",
						"line": 1397,
						"function": "{closure:/var/www/html/remote.php:102}",
						"args": [
							"*** sensitive parameters replaced ***"
						]
					},
					{
						"file": "/var/www/html/remote.php",
						"line": 102,
						"function": "handleRequests",
						"class": "OC",
						"type": "::",
						"args": [
							{
								"__class__": "Closure"
							}
						]
					}
				],
				"File": "/var/www/html/custom_apps/richdocuments/vendor/phpseclib/phpseclib/phpseclib/Crypt/PublicKeyLoader.php",
				"Line": 64
			}
		},
		"message": "Error while getting quota info, using root quota",
		"exception": "{\"class\":\"OCP\\Files\\StorageNotAvailableException\",\"message\":\"Unable to read key\",\"code\":0,\"file\":\"/var/www/html/lib/private/Files/Storage/FailedStorage.php:225\",\"trace\":\"#0 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(323): OC\\Files\\Storage\\FailedStorage->getAvailability()\\n#1 /var/www/html/lib/private/Files/Storage/Wrapper/Availability.php(61): OC\\Files\\Storage\\Wrapper\\Wrapper->getAvailability()\\n#2 /var/www/html/lib/private/Files/Storage/Wrapper/Availability.php(74): OC\\Files\\Storage\\Wrapper\\Availability->isAvailable()\\n#3 /var/www/html/lib/private/Files/Storage/Wrapper/Availability.php(83): OC\\Files\\Storage\\Wrapper\\Availability->checkAvailability()\\n#4 /var/www/html/lib/private/Files/Storage/Wrapper/Availability.php(217): OC\\Files\\Storage\\Wrapper\\Availability->handleAvailability('free_space', '')\\n#5 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(186): OC\\Files\\Storage\\Wrapper\\Availability->free_space('')\\n#6 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(186): OC\\Files\\Storage\\Wrapper\\Wrapper->free_space('')\\n#7 /var/www/html/lib/private/legacy/OC_Helper.php(231): OC\\Files\\Storage\\Wrapper\\Wrapper->free_space('')\\n#8 /var/www/html/apps/dav/lib/Connector/Sabre/Directory.php(349): OC_Helper::getStorageInfo('/home-Jeroen', Object(OC\\Files\\Node\\Folder), false)\\n#9 /var/www/html/3rdparty/sabre/dav/lib/DAV/CorePlugin.php(770): OCA\\DAV\\Connector\\Sabre\\Directory->getQuotaInfo()\\n#10 /var/www/html/3rdparty/sabre/dav/lib/DAV/PropFind.php(95): Sabre\\DAV\\CorePlugin->{closure:Sabre\\DAV\\CorePlugin::propFind():768}()\\n#11 /var/www/html/3rdparty/sabre/dav/lib/DAV/CorePlugin.php(768): Sabre\\DAV\\PropFind->handle('{DAV:}quota-ava...', Object(Closure))\\n#12 /var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php(89): Sabre\\DAV\\CorePlugin->propFind(Object(Sabre\\DAV\\PropFind), 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/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php(472): Sabre\\DAV\\Server->emit('method:PROPFIND', Array)\\n#20 /var/www/html/apps/dav/lib/Connector/Sabre/Server.php(216): Sabre\\DAV\\Server->invokeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\\n#21 /var/www/html/apps/dav/lib/Server.php(436): OCA\\DAV\\Connector\\Sabre\\Server->start()\\n#22 /var/www/html/apps/dav/appinfo/v2/remote.php(25): OCA\\DAV\\Server->exec()\\n#23 /var/www/html/remote.php(158): require('/var/www/html/a...')\\n#24 /var/www/html/lib/OC.php(1397): {closure:/var/www/html/remote.php:102}()\\n#25 /var/www/html/remote.php(102): OC::handleRequests(Object(Closure))\\n#26 {main}\",\"previous\":{\"class\":\"OCP\\Files\\StorageNotAvailableException\",\"message\":\"Unable to read key\",\"code\":0,\"file\":\"/var/www/html/lib/private/Files/Storage/FailedStorage.php:225\",\"trace\":\"#0 /var/www/html/apps/files_external/lib/Config/ConfigAdapter.php(124): OC\\Files\\Storage\\FailedStorage->getAvailability()\\n#1 [internal function]: OCA\\Files_External\\Config\\ConfigAdapter->{closure:OCA\\Files_External\\Config\\ConfigAdapter::getAvailableStorages():122}(Object(OC\\Files\\Storage\\FailedStorage), Object(OCA\\Files_External\\Lib\\StorageConfig))\\n#2 /var/www/html/apps/files_external/lib/Config/ConfigAdapter.php(122): array_map(Object(Closure), Array, Array)\\n#3 /var/www/html/apps/files_external/lib/Config/ConfigAdapter.php(144): OCA\\Files_External\\Config\\ConfigAdapter->getAvailableStorages(Array, Object(OC\\User\\User))\\n#4 /var/www/html/lib/private/Files/Config/MountProviderCollection.php(62): OCA\\Files_External\\Config\\ConfigAdapter->getMountsForUser(Object(OC\\User\\User), Object(OC\\Files\\Storage\\StorageFactory))\\n#5 /var/www/html/lib/private/Files/Config/MountProviderCollection.php(177): OC\\Files\\Config\\MountProviderCollection->getMountsFromProvider(Object(OCA\\Files_External\\Config\\ConfigAdapter), 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/var/www/html/apps/dav/lib/Connector/Sabre/CommentPropertiesPlugin.php(108): OCA\\DAV\\Connector\\Sabre\\CommentPropertiesPlugin->cacheDirectory(Object(OCA\\DAV\\Files\\FilesHome), Object(Sabre\\DAV\\PropFind))\\n#19 /var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php(89): OCA\\DAV\\Connector\\Sabre\\CommentPropertiesPlugin->preloadCollection(Object(Sabre\\DAV\\PropFind), Object(OCA\\DAV\\Files\\FilesHome))\\n#20 /var/www/html/apps/dav/lib/Connector/Sabre/PropFindPreloadNotifyPlugin.php(46): Sabre\\DAV\\Server->emit('preloadCollecti...', Array)\\n#21 /var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php(89): OCA\\DAV\\Connector\\Sabre\\PropFindPreloadNotifyPlugin->collectionPreloadNotifier(Object(Sabre\\DAV\\PropFind), Object(OCA\\DAV\\Files\\FilesHome))\\n#22 /var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php(1052): Sabre\\DAV\\Server->emit('propFind', Array)\\n#23 /var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php(984): 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		"CustomMessage": "Error while getting quota info, using root quota"
	},
	"id": "6ab41eeccec45"
}

Additional info

No response

[joshtrichards]

I believe the problem is that the private key is stored without its enters. This is because the form for inserting the private key uses an input element and not a textarea element, so the enters of the key will be lost.

I agree the field input explains the formatting problem, but not sure why the loaded raw key from the config is false rather than just mis-formatted. They key itself is being sent, stored, and retrieved from the backend.

Also best as I can tell, phpseclib parses without the original line breaks anyhow.

Is the key (albeit formatted in a single line) still present when you edit the config in the UI?

[jeroen1602]

When I used ./occ -vvv files_external:config <mount-id> private_key the key was in a single line.

I also edited the following file to echo what it was trying to send to phpseclib3

server/apps/files_external/lib/Lib/Auth/PublicKey/RSAPrivateKey.php

Lines 47 to 69 in 1cc43e3

	public function manipulateStorageConfig(StorageConfig &$storage, ?IUser $user = null) {
	try {
	$auth = PublicKeyLoader::load(
	$storage->getBackendOption('private_key'),
	$this->config->getSystemValue('secret', ''),
	);
	} catch (NoKeyLoadedException) {
	// Add fallback routine for a time where secret was not enforced to be exists
	$auth = PublicKeyLoader::load(
	$storage->getBackendOption('private_key'),
	'',
	);
	}
	if (!$auth instanceof RSA\PrivateKey) {
	throw new \RuntimeException('Loaded key is not a private key');
	}
	$auth = $auth->withPassword('');
	$storage->setBackendOption('public_key_auth', $auth);
	}
	}

And both printed the private key without any enters. As far as I know you can't get the key in the UI since the form fills that field with __unmodified__ to keep the key safe.

I myself thought it might be a problem because Nextcloud 35 is the first release that uses phpseclib3 over phpseclib2.
See this commit: c4544e3 and the changelog at https://nextcloud.com/changelog/#latest35