here's an "expect"-based function i use in a bash script for just such purpose,
# function: "DO_GENKEY_SESSION"
# auto-execute a GPG --gen-key session
# usage:
# DO_GENKEY_SESSION (SELECTION) $NOTATION $COMMENT
# gen-key dialog options (SELECTION):
# Please select what kind of key you want:
# (1) DSA and Elgamal (default)
# (2) DSA (sign only)
# (3) DSA (set your own capabilities)
# (5) RSA (sign only)
# (7) RSA (set your own capabilities)
DO_GENKEY_SESSION () {
echo "START: $COMMENT"
VAR=$($EXPECT -c "
spawn $GPG $GPG_RING_OPTS --expert --cert-notation $NOTATION
--gen-key
set timeout -1
stty -echo
expect \"Your selection? \"
exp_send \"$1\n\"
expect -re \"(What keysize do you want\?).*\\\\(\[0-9\]*\\\\) \"
exp_send \"$BITS\n\"
expect \"Key is valid for? (0) \"
exp_send \"0\n\"
expect \"Is this correct? (y/N) \"
exp_send \"y\n\"
expect \"Real name: \"
exp_send \"$NAME_REAL\n\"
expect \"Email address: \"
exp_send \"$EMAIL\n\"
expect \"Comment: \"
exp_send \"$SIG_COMMENT\n\"
expect \"(O)kay/(Q)uit? \"
exp_send \"O\n\"
expect \"Enter passphrase: \"
exp_send \"$PASS\n\"
expect \"Repeat passphrase: \"
exp_send \"$PASS\n\"
expect exp_continue -continue_timer
")
echo " DONE"
}
of course, you define/pass/replace the various vars as you need/like ...
hth!
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