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-b bits Specifies the length of the key in bits (default 2048).
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-t dsa|rsa Selects the type of the key. Valid options are dsa (default) and rsa.
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-c comment_string Specifies the key's comment string.
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-e file Edits the specified key. Makes ssh-keygen2 interactive. You can change the key's passphrase or comment.
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-p passphrase Specifies the passphrase used.
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-P Specifies that the key will be saved with an empty passphrase.
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-h | -? Prints a short summary of ssh-keygen2 commands.
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-q Hides the progress indicator.
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-1 file Converts a key from the SSH1 format to the SSH2 format.
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-i file Loads and displays information on file.
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-D file Derives the public key from the private key file.
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-B number Specifies the number base for displaying key information (default 10).
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-V Prints version string and exits.
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-r file Adds entropy from file to the random pool. If file contains 'relatively random' data (i.e. data unpredictable by a potential attacker), the randomness of the pool is increased. Good randomness is essential for the security of the generated keys.
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-x file Converts a private key from the X.509 format to the SSH2 format.
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-k file Converts a PKCS #12 file to an SSH2-format certificate and private key.
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-7 file Extracts certificates from a PKCS #7 file.
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-F file
Dumps the fingerprint of the given public key. The fingerprint is given in the Bubble Babble format, which makes the fingerprint look like a string of "real" words (making it easier to pronounce).
