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skidecrypt (1)
  • >> skidecrypt (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
  • 
    NAME
         skidecrypt - decrypt file
    
    SYNOPSIS
         skidecrypt [-s | -v] [-c cipher_file] [-i input_file]
         [-o output_file]
    
    AVAILABILITY
         SUNWski
    
    DESCRIPTION
         The skidecrypt utility decrypts data that was  encrypted  by
         an encryption utility such as skiencrypt(1).
    
         skidecrypt reads input from input_file and  produces  clear-
         text  data  which is stored in output_file. If no input_file
         is provided, the input  data  is  read  from  stdin.  If  no
         output_file  is  given,  the  cleartext  data  is printed to
         stdout.
    
         The data provided in input_file must be formatted as a  PKCS
         #7  message,  and must be provided in the printable encoding
         format as defined in the Internet RFC1421 standard.
    
         If the PKCS #7 input has content type "enveloped-data",  the
         content-encryption key under which the data was encrypted is
         recovered using the user's private key.  The  ciphertext  is
         then  decrypted  using  the recovered content-encryption key
         and the appropriate decryption algorithm.
    
         If the content type of the  PKCS  #7  input  is  "encrypted-
         data",  the  user is prompted for a password, from which the
         content-encryption key is derived. The  ciphertext  is  then
         decrypted  using the derived content- encryption key and the
         appropriate (password-based) decryption algorithm.  The only
         supported    password-based    decryption   algorithms   are
         pbeWithMD2AndDES-CBC and pbeWithMD5AndDES-CBC, as defined in
         the PKCS #5 standard.
    
         If the skiencrypt -x option was  used  when  encrypting  the
         data  (see  skiencrypt(1)),  the data provided in input_file
         will not contain the ciphertext. In this  case,  a  separate
         file,  cipher_file,  containing  the  ciphertext may be pro-
         vided.  If cipher_file is not provided,  skidecrypt  assumes
         the ciphertext is stored in a file named by input_file, suf-
         fixed by ".cipherdata".  If the  input  data  is  read  from
         stdin  (no  input_file  is provided) then skidecrypt assumes
         the ciphertext is stored in a file named "cipherdata" in the
         current  working  directory. The ciphertext must be provided
         in printable (ASCII) encoding.
    
    
         skidecrypt requires that the user has registered his or  her
         private key with the SKI keyserver (see skilogin(1)), unless
         password-based decryption is being used.
    
    OPTIONS
         The following options are supported:
    
         -s      Run application silently (no status or error  infor-
                 mation displayed).
    
         -v      Give verbose output.  If both  the  -v  and  the  -s
                 options are specified, the -v option is ignored.
    
         -c cipher_file
                 File containing the  ciphertext  (only  required  if
                 ciphertext  is not included in input_file). Defaults
                 to  input_file,  suffixed   by   ".cipherdata",   if
                 input_file is provided,  or to a file named "cipher-
                 data" in the current working directory if input data
                 is  read  from  stdin ( input_file is not provided).
                 The ciphertext must be provided in printable (ASCII)
                 encoding,  as  defined by the Internet RFC1421 stan-
                 dard.
    
         -i input_file
                 File containing the decryption information (that is,
                 the  decryption mechanism and optionally the decryp-
                 tion key) and optionally the ciphertext.
    
         -o output_file
                 File where cleartext data is stored.
    
    EXAMPLES
         This example decrypts the file "encrypted"  (which  contains
         the ciphertext and the decryption key/algorithm), and stores
         the recovered cleartext in the file "cleartxt":
    
              example% skidecrypt -i encrypted -o cleartxt
    
         The following example obtains the  decryption  key/algorithm
         from  the file "decrinfo", decrypts the ciphertext stored in
         "ciphertxt",  and  stores   the   recovered   cleartext   in
         "cleartxt":
    
              example%  skidecrypt  -i  decrinfo  -c   ciphertxt   -o
              cleartxt
    
         In the following example, the file "decrinfo" only  contains
         the  decryption key/algorithm information.  skidecrypt reads
         this information from stdin and by default assumes that  the
         ciphertext  is  stored  in  a file named "cipherdata" in the
         current working directory.  The ciphertext from "cipherdata"
         is decrypted and the cleartext is stored in "cleartxt":
    
              example% skidecrypt -o cleartxt < decrinfo
    
    EXIT STATUS
         The skidecrypt command exits with 0 if successful and 1 oth-
         erwise.
    
    SEE ALSO
         skiencrypt(1), skisign(1), skiverify(1), skilogin(1)
    
    
    
    


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