Approved Algorithms

1. Server Host Key Algorithm:

- Server Host Key: RSA (2048-bit, displayed as ssh-rsa 2048)
- Signature Method: rsa-sha2-512 (RSA with SHA-512 hashing)
The SHA256 fingerprint is solely for key verification and unrelated to signature strength.

2. Key Exchange (KEX) Algorithms:

- curve25519-sha256@libssh.org
- ecdh-sha2-nistp256
- ecdh-sha2-nistp384
- ecdh-sha2-nistp521
- diffie-hellman-group14-sha256
Deprecated: diffie-hellman-group1-sha1, diffie-hellman-group14-sha1

3. Ciphers (Encryption Algorithms):

- aes256-gcm@openssh.com
- aes128-gcm@openssh.com
- aes256-ctr
- aes192-ctr
- aes128-ctr
Deprecated: 3des-cbc, arcfour, blowfish-cbc, aes-cbc variants

4. MACs (Message Authentication Codes):

- hmac-sha2-512-etm@openssh.com
- hmac-sha2-256-etm@openssh.com
- hmac-sha2-512
- hmac-sha2-256
- hmac-sha256
Deprecated: hmac-md5, hmac-sha1, non-ETM variants

First Horizon Bank. Member FDIC.