NETKEY-TOOL(1) OpenSC Tools NETKEY-TOOL(1) (NAME) netkey-tool - Netkey E4 (SYNOPSIS) netkey-tool [OPTIONS] [COMMAND] (DESCRIPTION) netkey-tool NetKey E4 OpenSC PIN NetKey E4 PUK. (OPTIONS) --help, -h . --pin pin, -p pin PIN (global PIN) . --puk pin, -u pin PUK (global PUK) . --pin0 pin, -0 pin PIN0 ( PIN ) . --pin1 pin, -1 pin PIN1 ( PUK ) . --reader arg, -r arg . . arg ATR . -v netkey-tool . . PIN (PIN FORMAT) -p -u -0 -1 pin . (ascii) ( 123456) ( 31:32:33:34:35:36) . n n-1 . ascii . :12:34: 1:2:3:4 pin 12:34 01:02:03:04 pin . (COMMANDS) netkey-tool pin . ( netkey-tool ). pin . PIN --pin netkey-tool PUK . PUK netkey-tool . PUK . PUK PIN . netkey-tool pin . nullpin NetKey E4 . cert number filename ( number ) PEM filename . NetKey E4 pin pin . cert filename number PEM filename number . number . pin . pin netkey-tool pin . change {pin | puk | pin0 | pin1} new-pin pin . pin pin pin netkey-tool . nullpin initial-pin PIN nullpin . PIN nullpin . nullpin pin . nullpin netkey-tool PUK . unblock {pin | pin0 | pin1} pin . pin netkey-tool pin . (SEE ALSO) opensc-explorer(1) (AUTHORS) netkey-tool Peter Koch . opensc 06/02/2026 NETKEY-TOOL(1)