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What are the supported PGP key algorithms in Robo-FTP 3.5 and previous?

This information applies to version 3.5.0 and previous. Click here for information on more recent versions.

A number of factors go into accurately describing a key. These include the key type, size, cipher, compression, and hash.

Robo-FTP supports the following in any combination.


  • RSA
  • RSA-E
  • RSA-S
  • ELG-E
  • DSA
  • ELG (sometimes also called Diffie-Hellman)


  • Robo-FTP supports any key size up to 4096 bits.


  • 3DES
  • CAST5
  • AES (AES-128)
  • AES-192
  • AES-256


  • Uncompressed
  • ZIP
  • ZLIB


  • MD5
  • SHA1
  • RIPEMD160

Robo-FTP can import public keys that use any combination of the above.

When creating keys Robo-FTP automatically chooses a sensible default, DH/DSS (Diffie-Hellman) with the AES-128 cipher. Robo-FTP gives you an option to choose a key size of 768, 1024, or 2048.

If you wish to create keys with a combination of options other than what is offered by the Configurator you can do so from the command line.

Simply open a command prompt (cmd.exe) and type the following:

cd C:\Program Files\Robo-FTP
gpg --homedir . --gen-key

Just follow the prompts to generate a key pair with your choice of options.

Article last updated: 2017-08-23

Tags: GPG, PGP

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