Thanks, David. It does read without error using readBin. And using file.info as you suggest seem to be a step in the right direction (the length of foo agrees with 'wc -l' on the file). I just get different errors on subsequent attempts to use it.
(I should have mentioned in the beginning, whatever I do, I'd like it to work on both Mac and Linux.) And thanks again to all three of you. I'm about ready to give up on an R solution, and call an external script as Marc suggests. -Don -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 11/9/16, 11:27 AM, "David Winsemius" <dwinsem...@comcast.net> wrote: > >> On Nov 9, 2016, at 10:35 AM, MacQueen, Don <macque...@llnl.gov> wrote: >> >> Bob, >> >> Thanks for responding. I've tried the functions in bcrypt, and get, for >> example, >> >>> infl <- 'path.to.the.encrypted.file' >>> junk <- 'the.password' >>> foo <- readLines(infl) >> Warning message: >> In readLines(infl) : >> incomplete final line found on 'path.to.the.encrypted.file' > >I would not have expected that to succeed. readLines drops cr's and lf's >and it certainly seems possible that those characters might be encrypted >values randomly sprinkled through the image. What happens when you read >it as raw? (may need to first get `file.info` to determine file length.) > >perhaps something along the lines of > >foo <- readBin( infl, "raw", file.info(infl)[1, "size"]) > >-- >David > > >>> tmp <- checkpw(junk, foo) >> Error in hashpw(password, hash) : Invalid salt >> >> Thus demonstrating that I don't know what I'm doing. >> >> If it's easy to expand, as you mention, I would indeed appreciate it. >> >> -Don >> >> >> -- >> Don MacQueen >> >> Lawrence Livermore National Laboratory >> 7000 East Ave., L-627 >> Livermore, CA 94550 >> 925-423-1062 >> >> >> >> >> >> On 11/7/16, 5:29 PM, "Bob Rudis" <b...@rud.is> wrote: >> >>> Perhaps https://cran.r-project.org/web/packages/bcrypt/index.html >>> might be of assistance. >>> >>> If not, drop a note back to the list as it'll be trivial to expand on >>> that to give you an R alternative to Perl. >>> >>> On Mon, Nov 7, 2016 at 5:47 PM, MacQueen, Don <macque...@llnl.gov> >>>wrote: >>>> I have a file containing encrypted contents. The contents can be >>>> decrypted >>>> using perl, like this: >>>> >>>> open (FILEHANDLE, "/path/to/file") >>>> chomp ($ciphertext = <FILEHANDLE>); >>>> >>>> >>>> use Crypt::CBC; >>>> $cipher = Crypt::CBC->new( -key => 'my secret key', >>>> -cipher => 'Blowfish' >>>> ); >>>> >>>> $plaintext = $cipher->decrypt($ciphertext); >>>> >>>> >>>> (See http://search.cpan.org/~lds/Crypt-CBC-2.33/CBC.pm) >>>> >>>> M goal is to have the value of $plaintext in an R object, so, is there >>>> an >>>> R equivalent to this decrypt() perl function? >>>> >>>> I've found R packages >>>> bcrypt >>>> sodium >>>> that appear to have potential, but I don't understand this business >>>>well >>>> enough to figure out how to use them, if indeed they can be used, for >>>> this. Help would be much appreciated. >>>> >>>> Thanks >>>> -Don >>>> >>>> -- >>>> Don MacQueen >>>> >>>> Lawrence Livermore National Laboratory >>>> 7000 East Ave., L-627 >>>> Livermore, CA 94550 >>>> 925-423-1062 >>>> >>>> ______________________________________________ >>>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >>>> https://stat.ethz.ch/mailman/listinfo/r-help >>>> PLEASE do read the posting guide >>>> http://www.R-project.org/posting-guide.html >>>> and provide commented, minimal, self-contained, reproducible code. >> >> ______________________________________________ >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >>http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > >David Winsemius >Alameda, CA, USA > ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.