Provided by: opensc_0.11.12-1ubuntu3_i386 bug


       pkcs15-crypt - perform crypto operations using pkcs15 smart card


       pkcs15-crypt [OPTIONS]


       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.


       --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

           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

           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.

           This option tells pkcs15-crypt that the input file is the result of
           an SHA1 hash operation, rather than an MD5 hash. Again, the data
           must be in binary representation.

       --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

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

       --reader N, -r N
           Selects the N-th smart card reader configured by the system. If
           unspecified, pkcs15-crypt will use the first reader found.

       --input file, -i file
           Specifies the input file to use.

       --output file, -o file
           Any output will be sent to the specified file.

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

       --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

           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.

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


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