SFTP (SSH) Host Key

SFTP, along with its foundational protocol SSH, employs a mechanism known as Host Keys.

This mechanism allows clients to securely verify, through cryptographic methods, that they are connecting to the intended server (host).

Typically, in SSH, each host is assigned a unique host key, which is generated and linked specifically to that host.

However, in a business-to-business context like SFTP, it is advisable to maintain a single host key consistently over time.

This approach ensures that clients can reliably recognize the service each time they connect.

Overview

This document provides the SSH host key fingerprints for Thru’s automated file transfer servers across different locations.

These fingerprints are crucial for verifying the identity of the servers during SSH connections.

Fingerprint Locations

US Central (sftps.thruinc.com)

ECDSA (SHA2-NISTP256):

CODE

AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBNm0GEWPNfs3Pqj7Djox/QQg+Iukh+5IK2Lr6SlssPENnxcUO4kmRI92hpKUeGPmt6Z7PV2Xng+NEZvLMxLbrTE=

ED25519:

CODE

AAAAC3NzaC1lZDI1NTE5AAAAIKAN/6bLcIECLBmzKMWALK3OzCXZMmNyVJRTR1nT3ZpL

RSA:

CODE

AAAAB3NzaC1yc2EAAAADAQABAAACAQDhVhuFs71mXSLHE2gKXGXWvodKlMZFghAZDBHCUYCcCRlW5ICAUyxruhhcPO9eWfIhU/quK3cIFlHvzGC/0PFNuZGz45GafA7ewtAJFPXl+zYXpte+8y2zSBsSjN7Kg5C9mbhlcsU6NinK635cQD0LYg+PViYxdBrB6c423mij5pE3wPqLmo6dnWeqbcB8tG8I8DYnrd+re7ReQX7grWZaFe/OdTmCNU4gixjEA+O3RAlEIsSH074L8cSnHa/m5F8eATh5jdsc/vMdMk8+kMsGmp2qrM+RXset7LTiJ3/xyzc5eF/gYur8Y3trOgRbMBLA0c+Jj27vCU1zOOSeZhvGwtq4mEIkyjbQ6eAYRgJU9dCAZN5D/nUAqhC+OANA4wWNy8+Ed/+QotX810GMLhtJOYcEL438MTow5nZ73Y2/pCH6XqyKv4xeWYwuHCdBa437WmXm9Gn7AFhp4zDPYlZru0AtEgc9Gl08jWulJIduYBm56r7gEFsfZrP+ZIemdk/dicipWA03/bxVCiEOpeoEfZa9cojBmNQPk3Yyl2FGT5GF5tOvDXq26jHFPv0TrkLeITUL2fj5j1nwolTCrGMA0YQZ3TdN3i1bCXPUpVnGh8J05R+qwh8z6QgiwSnee6bG79P9LDXeRItlOyqRpL3Uc7digvy30COT3swgozqnWw==

United Kingdom (uk-sftps.thruinc.com)

ECDSA (SHA2-NISTP256):

CODE

AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBKZMA2pJdP+Er6VdQWKpw0zR8n5wcJlWmZ2ouK8qEEMcRKouDd0j1oeLLtXXROs3XclIlKIEeba50q80KtXjfY0=

ED25519:

CODE

AAAAC3NzaC1lZDI1NTE5AAAAINQTbnrO5hzIJCQ/2uCE/LH1D9TAde3/vY9M/tGqtGyq

RSA:

CODE

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

Germany (eu-sftps.thruinc.com)

ECDSA (SHA2-NISTP256):

CODE

AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBNm0GEWPNfs3Pqj7Djox/QQg+Iukh+5IK2Lr6SlssPENnxcUO4kmRI92hpKUeGPmt6Z7PV2Xng+NEZvLMxLbrTE=

ED25519:

CODE

AAAAC3NzaC1lZDI1NTE5AAAAIKAN/6bLcIECLBmzKMWALK3OzCXZMmNyVJRTR1nT3ZpL

RSA:

CODE

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

Australia (au-sftps.thruinc.com)

ECDSA (SHA2-NISTP256):

CODE

AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBBpriw96cuSKnOWsS029/brxtRkLaqEydTO89y1C8LCysqrt5/YD7Vxr6I1gPO4yEL+JBmmyNhHS6qGteAOa/5c=

ED25519:

CODE

AAAAC3NzaC1lZDI1NTE5AAAAICEcUuykr/UJ1JmahfDxI/lLa0/DalOkKi/LoTdhSMiF

RSA:

CODE

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

Staging (staging-sftps.thruinc.com)

ECDSA (SHA2-NISTP256):

CODE

AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBK1GPtr7m9IQ6pJzJ3cURKH40y/KRNHEgYwk6rQNBK3auSNV0RURZeIAdQHfc44k8U1+X6Wi6NbwyOtzn+h7ilg=

ED25519:

CODE

AAAAC3NzaC1lZDI1NTE5AAAAIOVAKFxxFqsbuBsij8OLnmksRw2bCO0cu3u/+VAn5HAy

RSA:

CODE

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

How to Use These Fingerprints

When connecting to any of these servers via SSH, verify the host key fingerprint against the corresponding entry in this guide.
If the fingerprint matches, you can proceed with the connection.
If the fingerprint does not match, do not connect and contact the system administrator.

Key Types Explained

ECDSA (Elliptic Curve Digital Signature Algorithm): A modern, efficient cryptographic algorithm using elliptic curve cryptography.
ED25519: A high-speed, high-security elliptic curve signature scheme.
RSA: A widely-used public-key cryptosystem for secure data transmission.

Security Recommendations

Always verify host key fingerprints before establishing an SSH connection.
Keep this document updated with the latest fingerprints.
Rotate keys periodically to maintain security.

Last Updated: [26/03/25]