SSH, The Secure Shell: The Definitive Guide, 2nd Edition

ssh-keygen Options

OpenSSH	Tectia	Option	Meaning
a The output filename is given as the final argument to ssh-keygen.
b You may need to escape the question mark in your shell, e.g.,-\?
	✓	-1 filename	Convert SSH1 key file to Tectia
	✓	-7 filename	Convert PKCS #7 key file to Tectia
	✓	-a trials	DH-GEX: number of primality
✓	✓	-b bits	# of bits in generated key
	✓	-B positive_integer	Specify numeric base for displaying key
✓		-B	Print fingerprint of key in BubbleBabble format
✓		-c	Change comment (with -C )
	✓	-c comment	Change comment
✓		-C comment	Specify new comment (with -c)
✓		-d	Generate DSA key
	✓	-D filename	Derive public key from private-key file
✓		-D reader	Download public key from smartcard reader
	✓	-e filename	Edit key file interactively
✓		-e	Export OpenSSH public key to Tectia format
✓		-f filename a	Output filename
	✓	-F filename	Print fingerprint of public key
✓		-G filename	DH-GEX: output file to generate candidate primes
	✓	-h	Print help and exit
	✓	-i	Display key information
✓		-i	Convert Tectia public key to OpenSSH
✓		-k	Convert PKCS #12 key file to Tectia
✓		-l	Print fingerprint of public key
✓		-M memory	DH-GEX: set amount of memory to use
	✓	-N passphrase	Specify new passphrase
	✓	-o filename	Output filename
✓		--overwrite (yes |no)	Overwrite output file or not
✓		-p	Change passphrase (with -P and -N)
	✓	-P passphrase	Specify old passphrase (with -p)
✓	-P	Use empty passphrase	✓
	✓	-q	Quiet: suppress progress indicator
✓