What ciphers, key exchange algorithms, key types/formats and lengths are supported by Control-M for Advanced File Transfer (AFT) 8.2.00 when transferring files over encrypted data channels using SFTP (SSH) or FTP over TLS (FTPS)? 

For AFT 8.0, refer to article 000287912
For MFT, refer to article 000214495

For SSH (SFTP), AFT 8.2 supports the following:

- MAC algorithms:  hmac-md5, hmac-md5-96, hmac-sha1, hmac-sha1-96, hmac-sha-256 
- Ciphers: aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, 3des-cbc, 3des-ctr, blowfish-cbc, arcfour256, arcfour128, arcfour
- Key EXchange: ecdsa-sha2-nistp256, ecdsa-sha2-nistp384, ecdsa-sha2-nistp521, ecdh-sha2-nistp256, ecdh-sha2-nistp384, ecdh-sha2-nistp521, diffie-hellman-group-exchange-sha256, diffie-hellman-group-exchange-sha1, diffie-hellman-group14-sha1, diffie-hellman-group1-sha1
- Generated keys: type=RSA,  sizes = 1024, 2048, 3072, 4096 

Note: in JRE 1.8 u121, 3DES has been marked as a Legacy cipher and is thus disabled by default, causing AFT 8.2 to not be able to use the 3dses-cbc and 3des-ctr ciphers. BMC recommends enabling stronger and more current cipher suites on the remote server to resolve Algorithm negotiation failures.

For FTP over SSL/TLS (FTPS):

Since AFT 8.2 is using the standard Java security provider for SSL (over FTP), the complete list of ciphers, signature algorithms and key exchange algorithms supported can be found in the link:
http://docs.oracle.com/javase/8/docs/technotes/guides/security/SunProviders.html#SunJSSEProvider
Please look under “The SunJSSE Provider” section. The Signature Algorithm list is under the “Cipher Suites” section. The current version of Java used by MFT is JDK8, so look under that column.