Cryptographic algorithms Security policy details

Security policies for Amazon Transfer Family servers

Server security policies in Amazon Transfer Family allow you to limit the set of cryptographic algorithms (message authentication codes (MACs), key exchanges (KEXs), cipher suites, content encryption ciphers, and hash algorithms) associated with your server.

Amazon Transfer Family supports post-quantum security policies that use hybrid key exchange algorithms, combining traditional cryptographic methods with post-quantum algorithms to provide enhanced security against future quantum computing threats. For more information, see Using hybrid post-quantum key exchange with Amazon Transfer Family.

For a list of supported cryptographic algorithms, see Cryptographic algorithms. For a list of supported key algorithms for use with server host keys and service-managed user keys, see Managing SSH and PGP keys in Transfer Family.

Note

Starting in 2025, all new Amazon Transfer Family security policies include post-quantum cryptographic support using hybrid key exchange algorithms. For more information about post-quantum security, see Using hybrid post-quantum key exchange with Amazon Transfer Family.

Note

We strongly recommend updating your servers to our latest security policy.

TransferSecurityPolicy-2024-01 is the default security policy attached to your server when creating a server using the console, API, or CLI.
If you create a Transfer Family server using CloudFormation and accept the default security policy, the server is assigned TransferSecurityPolicy-2018-11.

If you are concerned about client compatibility, please affirmatively state which security policy you wish to use when creating or updating a server rather than using the default policy, which is subject to change. To change the security policy for a server, see Edit the security policy.

Note

The earlier post quantum policies (TransferSecurityPolicy-PQ-SSH-Experimental-2023-04 and TransferSecurityPolicy-PQ-SSH-FIPS-Experimental-2023-04) are deprecated. We recommend that you use the new policies instead.

For more information on security in Transfer Family, see the following blog posts:

Cryptographic algorithms

For host keys, we support the following algorithms:

rsa-sha2-256
rsa-sha2-512
ecdsa-sha2-nistp256
ecdsa-sha2-nistp384
ecdsa-sha2-nistp521
ssh-ed25519

Additionally, the following security policies allow ssh-rsa:

TransferSecurityPolicy-2018-11
TransferSecurityPolicy-2020-06
TransferSecurityPolicy-FIPS-2020-06
TransferSecurityPolicy-FIPS-2023-05
TransferSecurityPolicy-FIPS-2024-01

Note

It is important to understand the distinction between the RSA key type—which is always ssh-rsa—and the RSA host key algorithm, which can be any of the supported algorithms.

The following is a list of supported cryptographic algorithms for each security policy.

Note

In the following table and policies, note the following use of algorithm types.

SFTP servers only use algorithms in the SshCiphers, SshKexs, and SshMacs sections.
FTPS servers only use algorithms in the TlsCiphers section.
FTP servers, since they don't use encryption, do not use any of these algorithms.
AS2 servers only use algorithms in the ContentEncryptionCiphers and HashAlgorithms sections. These sections define algorithms used for encrypting and signing file content.
The FIPS-2024-05 and FIPS-2024-01 security policies are identical, except that FIPS-2024-05 doesn't support the ssh-rsa algorithm.
Transfer Family has introduced new restricted policies that closely parallel existing policies:
- The TransferSecurityPolicy-Restricted-2018-11 and TransferSecurityPolicy-2018-11 security policies are identical, except that the restricted policy doesn't support the chacha20-poly1305@openssh.com cipher.
- The TransferSecurityPolicy-Restricted-2020-06 and TransferSecurityPolicy-2020-06 security policies are identical, except that the restricted policy doesn't support the chacha20-poly1305@openssh.com cipher.
^*In the following table, the chacha20-poly1305@openssh.com cipher is included in the non-restricted policy only,

Security policy	TransferSecurityPolicy-2025-03	TransferSecurityPolicy-FIPS-2025-03	TransferSecurityPolicy-SshAuditCompliant-2025-02	TransferSecurityPolicy-AS2Restricted-2025-07	TransferSecurityPolicy-2024-01	TransferSecurityPolicy-FIPS-2024-01/TransferSecurityPolicy-FIPS-2024-05	TransferSecurityPolicy-2023-05	TransferSecurityPolicy-FIPS-2023-05	TransferSecurityPolicy-2022-03	TransferSecurityPolicy-2020-06 and TransferSecurityPolicy-Restricted-2020-06	TransferSecurityPolicy-FIPS-2020-06	TransferSecurityPolicy-2018-11 and TransferSecurityPolicy-Restricted-2018-11
SshCiphers
aes128-ctr	♦	♦	♦	♦	♦	♦				♦	♦	♦
aes128-gcm@openssh.com	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
aes192-ctr	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
aes256-ctr	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
aes256-gcm@openssh.com	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
chacha20-poly1305@openssh.com										♦^*		♦^*
SshKexs
mlkem768x25519-sha256	♦	♦		♦
mlkem768nistp256-sha256	♦	♦		♦
mlkem1024nistp384-sha384	♦	♦		♦
curve25519-sha256	♦		♦	♦	♦		♦		♦			♦
curve25519-sha256@libssh.org	♦		♦	♦	♦		♦		♦			♦
diffie-hellman-group14-sha1												♦
diffie-hellman-group14-sha256										♦	♦	♦
diffie-hellman-group16-sha512	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
diffie-hellman-group18-sha512	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
diffie-hellman-group-exchange-sha256	♦	♦	♦	♦	♦		♦	♦	♦	♦	♦	♦
ecdh-sha2-nistp256	♦	♦		♦	♦	♦				♦	♦	♦
ecdh-sha2-nistp384	♦	♦		♦	♦	♦				♦	♦	♦
ecdh-sha2-nistp521	♦	♦		♦	♦	♦				♦	♦	♦
SshMacs
hmac-sha1												♦
hmac-sha1-etm@openssh.com												♦
hmac-sha2-256									♦	♦	♦	♦
hmac-sha2-256-etm@openssh.com	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
hmac-sha2-512									♦	♦	♦	♦
hmac-sha2-512-etm@openssh.com	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
umac-128-etm@openssh.com										♦		♦
umac-128@openssh.com										♦		♦
umac-64-etm@openssh.com												♦
umac-64@openssh.com												♦
ContentEncryptionCiphers
aes256-cbc	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
aes192-cbc	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
aes128-cbc	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
3des-cbc	♦	♦	♦		♦	♦	♦	♦	♦	♦	♦	♦
HashAlgorithms
sha256	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
sha384	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
sha512	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
sha1	♦	♦	♦		♦	♦	♦	♦	♦	♦	♦	♦
TlsCiphers
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦	♦
TLS_RSA_WITH_AES_128_CBC_SHA256												♦
TLS_RSA_WITH_AES_256_CBC_SHA256												♦

Security policy details

The following sections contain the JSON representation of each security policy.

TransferSecurityPolicy-2025-03

The following shows the TransferSecurityPolicy-2025-03 security policy.


{
    "SecurityPolicy": {
        "Fips": false,
        "SecurityPolicyName": "TransferSecurityPolicy-2025-03",
        "SshCiphers": [
            "aes256-gcm@openssh.com",
            "aes128-gcm@openssh.com",
            "aes128-ctr",
            "aes256-ctr",
            "aes192-ctr"
        ],
        "SshKexs": [
            "mlkem768x25519-sha256",
            "mlkem768nistp256-sha256",
            "mlkem1024nistp384-sha384",
            "ecdh-sha2-nistp256",
            "ecdh-sha2-nistp384",
            "ecdh-sha2-nistp521",
            "curve25519-sha256",
            "curve25519-sha256@libssh.org",
            "diffie-hellman-group16-sha512",
            "diffie-hellman-group18-sha512",
            "diffie-hellman-group-exchange-sha256"
        ],
        "SshMacs": [
            "hmac-sha2-256-etm@openssh.com",
            "hmac-sha2-512-etm@openssh.com"
        ],
        "ContentEncryptionCiphers": [
            "aes256-cbc",
            "aes192-cbc",
            "aes128-cbc",
            "3des-cbc"
        ],
        "HashAlgorithms": [
            "sha256",
            "sha384",
            "sha512",
            "sha1"
        ],
        "TlsCiphers": [
            "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
        ],
        "Type": "SERVER",
        "Protocols": [
           "SFTP",
           "FTPS"
        ]
    }
}

TransferSecurityPolicy-FIPS-2025-03

The following shows the TransferSecurityPolicy-FIPS-2025-03 security policy.


{
    "SecurityPolicy": {
        "Fips": true,
        "SecurityPolicyName": "TransferSecurityPolicy-FIPS-2025-03",
        "SshCiphers": [
            "aes256-gcm@openssh.com",
            "aes128-gcm@openssh.com",
            "aes256-ctr",
            "aes192-ctr",
            "aes128-ctr"
        ],
        "SshKexs": [
            "mlkem768x25519-sha256",
            "mlkem768nistp256-sha256",
            "mlkem1024nistp384-sha384",
            "ecdh-sha2-nistp256",
            "ecdh-sha2-nistp384",
            "ecdh-sha2-nistp521",
            "diffie-hellman-group-exchange-sha256",
            "diffie-hellman-group16-sha512",
            "diffie-hellman-group18-sha512"
        ],
        "SshMacs": [
            "hmac-sha2-512-etm@openssh.com",
            "hmac-sha2-256-etm@openssh.com"
        ],
        "ContentEncryptionCiphers": [
            "aes256-cbc",
            "aes192-cbc",
            "aes128-cbc",
            "3des-cbc"
        ],
        "HashAlgorithms": [
            "sha256",
            "sha384",
            "sha512",
            "sha1"
        ],
        "TlsCiphers": [
            "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
        ],
        "Type": "SERVER",
        "Protocols": [
           "SFTP",
           "FTPS"
        ]
    }
}

TransferSecurityPolicy-AS2Restricted-2025-07

This security policy is designed for AS2 file transfers that require enhanced security by excluding legacy cryptographic algorithms. It supports modern AES encryption and SHA-2 hash algorithms while removing support for weaker algorithms like 3DES and SHA-1.

Note

This security policy is identical to TransferSecurityPolicy-2025-03, except that it does not support 3DES (in ContentEncryptionCiphers) and does not support SHA1 (in HashAlgorithms). It includes all algorithms from 2025-03, including post-quantum cryptographic algorithms (mlkem* KEXs).


{
    "SecurityPolicy": {
        "Fips": false,
        "SecurityPolicyName": "TransferSecurityPolicy-AS2Restricted-2025-07",
        "SshCiphers": [
            "aes256-gcm@openssh.com",
            "aes128-gcm@openssh.com",
            "aes128-ctr",
            "aes256-ctr",
            "aes192-ctr"
        ],
        "SshKexs": [
            "mlkem768x25519-sha256",
            "mlkem768nistp256-sha256",
            "mlkem1024nistp384-sha384",
            "ecdh-sha2-nistp256",
            "ecdh-sha2-nistp384",
            "ecdh-sha2-nistp521",
            "curve25519-sha256",
            "curve25519-sha256@libssh.org",
            "diffie-hellman-group16-sha512",
            "diffie-hellman-group18-sha512",
            "diffie-hellman-group-exchange-sha256"
        ],
        "SshMacs": [
            "hmac-sha2-256-etm@openssh.com",
            "hmac-sha2-512-etm@openssh.com"
        ],
        "ContentEncryptionCiphers": [
            "aes256-cbc",
            "aes192-cbc",
            "aes128-cbc"
        ],
        "HashAlgorithms": [
            "sha256",
            "sha384",
            "sha512"
        ],
        "TlsCiphers": [
            "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
        ],
        "Type": "SERVER",
        "Protocols": [
           "SFTP",
           "FTPS"
        ]
    }
}

TransferSecurityPolicy-SshAuditCompliant-2025-02

The following shows the TransferSecurityPolicy-SshAuditCompliant-2025-02 security policy.

Note

This security policy is designed around the recommendations provided by the ssh-audit tool, and is 100% compliant with that tool.


{
  "SecurityPolicy": {
    "Fips": false,
    "Protocols": [
      "SFTP",
      "FTPS"
    ],
    "SecurityPolicyName": "TransferSecurityPolicy-SshAuditCompliant-2025-02",
    "SshCiphers": [
      "aes128-gcm@openssh.com",
      "aes256-gcm@openssh.com",
      "aes128-ctr",
      "aes256-ctr",
      "aes192-ctr"
    ],
    "SshKexs": [
      "curve25519-sha256",
      "curve25519-sha256@libssh.org",
      "diffie-hellman-group18-sha512",
      "diffie-hellman-group16-sha512",
      "diffie-hellman-group-exchange-sha256"
    ],
    "SshMacs": [
      "hmac-sha2-256-etm@openssh.com",
      "hmac-sha2-512-etm@openssh.com"
    ],
    "ContentEncryptionCiphers": [
      "aes256-cbc",
      "aes192-cbc",
      "aes128-cbc",
      "3des-cbc"
    ],
    "HashAlgorithms": [
      "sha256",
      "sha384",
      "sha512",
      "sha1"
    ],
    "TlsCiphers": [
      "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
    ],
    "Type": "SERVER"
  }
}

TransferSecurityPolicy-2024-01

The following shows the TransferSecurityPolicy-2024-01 security policy.


{
    "SecurityPolicy": {
        "Fips": false,
        "SecurityPolicyName": "TransferSecurityPolicy-2024-01",
        "SshCiphers": [
            "aes128-gcm@openssh.com",
            "aes256-gcm@openssh.com",
            "aes128-ctr",
            "aes256-ctr",
            "aes192-ctr"
        ],
        "SshKexs": [
            "ecdh-sha2-nistp256",
            "ecdh-sha2-nistp384",
            "ecdh-sha2-nistp521",
            "curve25519-sha256",
            "curve25519-sha256@libssh.org",
            "diffie-hellman-group18-sha512",
            "diffie-hellman-group16-sha512",
            "diffie-hellman-group-exchange-sha256"
        ],
        "SshMacs": [
            "hmac-sha2-256-etm@openssh.com",
            "hmac-sha2-512-etm@openssh.com"
        ],
        "ContentEncryptionCiphers": [
            "aes256-cbc",
            "aes192-cbc",
            "aes128-cbc",
            "3des-cbc"
        ],
        "HashAlgorithms": [
            "sha256",
            "sha384",
            "sha512",
            "sha1"
        ],
        "TlsCiphers": [
            "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
        ]
    }
}

TransferSecurityPolicy-FIPS-2024-01/TransferSecurityPolicy-FIPS-2024-05

The following shows the TransferSecurityPolicy-FIPS-2024-01 and TransferSecurityPolicy-FIPS-2024-05 security policies.

Note

The FIPS service endpoint and TransferSecurityPolicy-FIPS-2024-01 and TransferSecurityPolicy-FIPS-2024-05 security policies are only available in some Amazon Regions. For more information, see Amazon Transfer Family endpoints and quotas in the Amazon Web Services General Reference.

The only difference between these two security policies is that TransferSecurityPolicy-FIPS-2024-01 supports the ssh-rsa algorithm, and TransferSecurityPolicy-FIPS-2024-05 doesn't.


{
    "SecurityPolicy": {
        "Fips": true,
        "SecurityPolicyName": "TransferSecurityPolicy-FIPS-2024-01",
        "SshCiphers": [
            "aes128-gcm@openssh.com",
            "aes256-gcm@openssh.com",
            "aes128-ctr",
            "aes256-ctr",
            "aes192-ctr"
        ],
        "SshKexs": [
            "ecdh-sha2-nistp256",
            "ecdh-sha2-nistp384",
            "ecdh-sha2-nistp521",
            "diffie-hellman-group18-sha512",
            "diffie-hellman-group16-sha512",
            "diffie-hellman-group-exchange-sha256"
        ],
        "SshMacs": [
            "hmac-sha2-256-etm@openssh.com",
            "hmac-sha2-512-etm@openssh.com"
        ],
        "ContentEncryptionCiphers": [
            "aes256-cbc",
            "aes192-cbc",
            "aes128-cbc",
            "3des-cbc"
        ],
        "HashAlgorithms": [
            "sha256",
            "sha384",
            "sha512",
            "sha1"
        ],
        "TlsCiphers": [
            "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
        ]
    }
}

TransferSecurityPolicy-2023-05

The following shows the TransferSecurityPolicy-2023-05 security policy.


{
    "SecurityPolicy": {
        "Fips": false,
        "SecurityPolicyName": "TransferSecurityPolicy-2023-05",
        "SshCiphers": [
            "aes256-gcm@openssh.com",
            "aes128-gcm@openssh.com",
            "aes256-ctr",
            "aes192-ctr"
        ],
        "SshKexs": [
            "curve25519-sha256",
            "curve25519-sha256@libssh.org",
            "diffie-hellman-group16-sha512",
            "diffie-hellman-group18-sha512",
            "diffie-hellman-group-exchange-sha256"
        ],
        "SshMacs": [
            "hmac-sha2-512-etm@openssh.com",
            "hmac-sha2-256-etm@openssh.com"
        ],
        "ContentEncryptionCiphers": [
            "aes256-cbc",
            "aes192-cbc",
            "aes128-cbc",
            "3des-cbc"
        ],
        "HashAlgorithms": [
            "sha256",
            "sha384",
            "sha512",
            "sha1"
        ],
        "TlsCiphers": [
            "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
        ]
    }
}

TransferSecurityPolicy-FIPS-2023-05

The FIPS certification details for Amazon Transfer Family can be found at https://csrc.nist.gov/projects/cryptographic-module-validation-program/validated-modules/search/all

The following shows the TransferSecurityPolicy-FIPS-2023-05 security policy.

Note

The FIPS service endpoint and TransferSecurityPolicy-FIPS-2023-05 security policy is only available in some Amazon Regions. For more information, see Amazon Transfer Family endpoints and quotas in the Amazon Web Services General Reference.


{
    "SecurityPolicy": {
        "Fips": true,
        "SecurityPolicyName": "TransferSecurityPolicy-FIPS-2023-05",
        "SshCiphers": [
            "aes256-gcm@openssh.com",
            "aes128-gcm@openssh.com",
            "aes256-ctr",
            "aes192-ctr"
        ],
        "SshKexs": [
            "diffie-hellman-group16-sha512",
            "diffie-hellman-group18-sha512",
            "diffie-hellman-group-exchange-sha256"
        ],
        "SshMacs": [
            "hmac-sha2-256-etm@openssh.com",
            "hmac-sha2-512-etm@openssh.com"
        ],
        "ContentEncryptionCiphers": [
            "aes256-cbc",
            "aes192-cbc",
            "aes128-cbc",
            "3des-cbc"
        ],
        "HashAlgorithms": [
            "sha256",
            "sha384",
            "sha512",
            "sha1"
        ],
        "TlsCiphers": [
            "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
        ]
    }
}

TransferSecurityPolicy-2022-03

The following shows the TransferSecurityPolicy-2022-03 security policy.


{
  "SecurityPolicy": {
    "Fips": false,
    "SecurityPolicyName": "TransferSecurityPolicy-2022-03",
    "SshCiphers": [
      "aes256-gcm@openssh.com",
      "aes128-gcm@openssh.com",
      "aes256-ctr",
      "aes192-ctr"
    ],
    "SshKexs": [
      "curve25519-sha256",
      "curve25519-sha256@libssh.org",
      "diffie-hellman-group16-sha512",
      "diffie-hellman-group18-sha512",
      "diffie-hellman-group-exchange-sha256"
    ],
    "SshMacs": [
      "hmac-sha2-512-etm@openssh.com",
      "hmac-sha2-256-etm@openssh.com",
      "hmac-sha2-512",
      "hmac-sha2-256"
    ],
    "ContentEncryptionCiphers": [
      "aes256-cbc",
      "aes192-cbc",
      "aes128-cbc",
      "3des-cbc"
    ],
    "HashAlgorithms": [
      "sha256",
      "sha384",
      "sha512",
      "sha1"
    ],
    "TlsCiphers": [
      "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
    ]
  }
}

TransferSecurityPolicy-2020-06 and TransferSecurityPolicy-Restricted-2020-06

The following shows the TransferSecurityPolicy-2020-06 security policy.

Note

The TransferSecurityPolicy-Restricted-2020-06 and TransferSecurityPolicy-2020-06 security policies are identical, except that the restricted policy doesn't support the chacha20-poly1305@openssh.com cipher.


{
  "SecurityPolicy": {
    "Fips": false,
    "SecurityPolicyName": "TransferSecurityPolicy-2020-06",
    "SshCiphers": [
      "chacha20-poly1305@openssh.com", //Not included in TransferSecurityPolicy-Restricted-2020-06
      "aes128-ctr",
      "aes192-ctr",
      "aes256-ctr",
      "aes128-gcm@openssh.com",
      "aes256-gcm@openssh.com"
    ],
    "SshKexs": [
      "ecdh-sha2-nistp256",
      "ecdh-sha2-nistp384",
      "ecdh-sha2-nistp521",
      "diffie-hellman-group-exchange-sha256",
      "diffie-hellman-group16-sha512",
      "diffie-hellman-group18-sha512",
      "diffie-hellman-group14-sha256"
    ],
    "SshMacs": [
      "umac-128-etm@openssh.com",
      "hmac-sha2-256-etm@openssh.com",
      "hmac-sha2-512-etm@openssh.com",
      "umac-128@openssh.com",
      "hmac-sha2-256",
      "hmac-sha2-512"
    ],
    "ContentEncryptionCiphers": [
      "aes256-cbc",
      "aes192-cbc",
      "aes128-cbc",
      "3des-cbc"
    ],
    "HashAlgorithms": [
      "sha256",
      "sha384",
      "sha512",
      "sha1"
    ],
    "TlsCiphers": [
      "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
    ]
  }
}

TransferSecurityPolicy-FIPS-2020-06

The FIPS certification details for Amazon Transfer Family can be found at https://csrc.nist.gov/projects/cryptographic-module-validation-program/validated-modules/search/all

The following shows the TransferSecurityPolicy-FIPS-2020-06 security policy.

Note

The FIPS service endpoint and TransferSecurityPolicy-FIPS-2020-06 security policy are only available in some Amazon Regions. For more information, see Amazon Transfer Family endpoints and quotas in the Amazon Web Services General Reference.


{
  "SecurityPolicy": {
    "Fips": true,
    "SecurityPolicyName": "TransferSecurityPolicy-FIPS-2020-06",
    "SshCiphers": [
      "aes128-ctr",
      "aes192-ctr",
      "aes256-ctr",
      "aes128-gcm@openssh.com",
      "aes256-gcm@openssh.com"
    ],
    "SshKexs": [
      "ecdh-sha2-nistp256",
      "ecdh-sha2-nistp384",
      "ecdh-sha2-nistp521",
      "diffie-hellman-group-exchange-sha256",
      "diffie-hellman-group16-sha512",
      "diffie-hellman-group18-sha512",
      "diffie-hellman-group14-sha256"
    ],
    "SshMacs": [
      "hmac-sha2-256-etm@openssh.com",
      "hmac-sha2-512-etm@openssh.com",
      "hmac-sha2-256",
      "hmac-sha2-512"
    ],
    "ContentEncryptionCiphers": [
      "aes256-cbc",
      "aes192-cbc",
      "aes128-cbc",
      "3des-cbc"
    ],
    "HashAlgorithms": [
      "sha256",
      "sha384",
      "sha512",
      "sha1"
    ],
    "TlsCiphers": [
      "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
    ]
  }
}

TransferSecurityPolicy-2018-11 and TransferSecurityPolicy-Restricted-2018-11

The following shows the TransferSecurityPolicy-2018-11 security policy.

Note

The TransferSecurityPolicy-Restricted-2018-11 and TransferSecurityPolicy-2018-11 security policies are identical, except that the restricted policy doesn't support the chacha20-poly1305@openssh.com cipher.


{
  "SecurityPolicy": {
    "Fips": false,
    "SecurityPolicyName": "TransferSecurityPolicy-2018-11",
    "SshCiphers": [
      "chacha20-poly1305@openssh.com", //Not included in TransferSecurityPolicy-Restricted-2018-11
      "aes128-ctr",
      "aes192-ctr",
      "aes256-ctr",
      "aes128-gcm@openssh.com",
      "aes256-gcm@openssh.com"
    ],
    "SshKexs": [
      "curve25519-sha256",
      "curve25519-sha256@libssh.org",
      "ecdh-sha2-nistp256",
      "ecdh-sha2-nistp384",
      "ecdh-sha2-nistp521",
      "diffie-hellman-group-exchange-sha256",
      "diffie-hellman-group16-sha512",
      "diffie-hellman-group18-sha512",
      "diffie-hellman-group14-sha256",
      "diffie-hellman-group14-sha1"
    ],
    "SshMacs": [
      "umac-64-etm@openssh.com",
      "umac-128-etm@openssh.com",
      "hmac-sha2-256-etm@openssh.com",
      "hmac-sha2-512-etm@openssh.com",
      "hmac-sha1-etm@openssh.com",
      "umac-64@openssh.com",
      "umac-128@openssh.com",
      "hmac-sha2-256",
      "hmac-sha2-512",
      "hmac-sha1"
    ],
    "ContentEncryptionCiphers": [
      "aes256-cbc",
      "aes192-cbc",
      "aes128-cbc",
      "3des-cbc"
    ],
    "HashAlgorithms": [
      "sha256",
      "sha384",
      "sha512",
      "sha1"
    ],
    "TlsCiphers": [
      "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384",
      "TLS_RSA_WITH_AES_128_CBC_SHA256",
      "TLS_RSA_WITH_AES_256_CBC_SHA256"
    ]
  }
}

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Security

Security policies for SFTP connectors