NAME

       pkcs15-crypt - perform crypto operations using PKCS#15 smart cards

SYNOPSIS

       pkcs15-crypt [OPTIONS]

DESCRIPTION

       The pkcs15-crypt utility can be used from the command line to perform cryptographic operations such as
       computing digital signatures or decrypting data, using keys stored on a PKCS#15 compliant smart card.

OPTIONS

       --version,
           Print the OpenSC package release version.

       --aid aid
           Specify the AID of the on-card PKCS#15 application to bind to. The aid must be in hexadecimal form.

       --decipher, -c
           Decrypt the contents of the file specified by the --input option. The result of the decryption
           operation is written to the file specified by the --output option. If this option is not given, the
           decrypted data is printed to standard output, displaying non-printable characters using their hex
           notation xNN (see also --raw).

       --input file, -i file
           Specifies the input file to use. Defaults to stdin if not specified.

       --key id, -k id
           Selects the ID of the key to use.

       --output file, -o file
           Any output will be sent to the specified file. Defaults to stdout if not specified.

       --pin pin, -p pin
           When the cryptographic operation requires a PIN to access the key, pkcs15-crypt will prompt the user
           for the PIN on the terminal. Using this option allows you to specify the PIN on the command line.

           Note that on most operating systems, the command line of a process can be displayed by any user using
           the ps(1) command. It is therefore a security risk to specify secret information such as PINs on the
           command line. If you specify '-' as PIN, it will be read from STDIN.

       --pkcs1
           By default, pkcs15-crypt assumes that input data has been padded to the correct length (i.e. when
           computing an RSA signature using a 1024 bit key, the input must be padded to 128 bytes to match the
           modulus length). When giving the --pkcs1 option, however, pkcs15-crypt will perform the required
           padding using the algorithm outlined in the PKCS #1 standard version 1.5.

       --raw, -R
           Outputs raw 8 bit data.

       --reader arg, -r arg
           Number of the reader to use. By default, the first reader with a present card is used. If arg is an
           ATR, the reader with a matching card will be chosen.

       --md5 --sha-1 --sha-224 --sha-256 --sha-384 --sha-512
           These options tell pkcs15-crypt that the input file is the result of the specified hash operation. By
           default, an MD5 hash is expected. Again, the data must be in binary representation.

       --sign, -s
           Perform digital signature operation on the data read from a file specified using the --input option.
           By default, the contents of the file are assumed to be the result of an MD5 hash operation. Note that
           pkcs15-crypt expects the data in binary representation, not ASCII.

           The digital signature is stored, in binary representation, in the file specified by the --output
           option. If this option is not given, the signature is printed on standard output, displaying
           non-printable characters using their hex notation xNN (see also --raw).

       --signature-format, --f
           When signing with ECDSA key this option indicates to pkcs15-crypt the signature output format.
           Possible values are 'rs'(default) -- two concatenated integers (PKCS#11), 'sequence' or 'openssl' --
           DER encoded sequence of two integers (OpenSSL).

       --wait, -w
           Causes pkcs15-crypt to wait for a card insertion.

       --verbose, -v
           Causes pkcs15-crypt to be more verbose. Specify this flag several times to enable debug output in the
           OpenSC library.

SEE ALSO

       pkcs15-init(1), pkcs15-tool(1)

AUTHORS

       pkcs15-crypt was written by Juha Yrjölä <juha.yrjola@iki.fi>.