Rearranged = " " if defined? ( " has_ord? ". digest end # This is the bit that uses to64() in the original code.
#SHA512 CRYPT3 UPDATE#
update ( password ) end if ( i & 1 ) != 0 m2. update ( salt ) end if ( i % 7 ) != 0 m2. update ( final ) end if ( i % 3 ) != 0 m2.
digest # and now, just to make sure things don't run too fastġ000.
# Also really broken, as far as I can tell. update ( password + magic + salt ) # Then just as many characters of the MD5(pw,salt,pw) upcase ) # The password first, since that is what is most unknown. john -formatcrypt -test Benchmarking: generic crypt(3) /64. Is the sha512 hash, or something else, to blame on this poor performance Why such a hudge difference between the test and actual john-1.7.8-jumbo-5-Solaris-x86-64: bash-3.00. crypt ( password, algo = :md5, salt = nil, magic = ' $1$ ' ) salt ||= generate_salt ( 8 ) case algo when :md5 require " digest/md5 " when :sha1 require " digest/sha1 " when :rmd160 require " digest/rmd160 " when :sha256, :sha384, :sha512 require " digest/sha2 " else raise ( ArgumentError, " unknown algorithm " ) end digest_class = Digest. Well, maybe just two builds, since omp4 and omp7 performed about the same. Result example: and you'll get your SHA512 hashed string.# File 'lib/crypt3.rb', line 50 def self. Also I changed the 1 to the 6, since the manpage of crypt says that this would create an SHA512 hash. I have pretty much copied the examplecode from the GNU, even though I know the salt calculation isnt very good. You can use the doveadm utility, which is included in the dovecot package. As the title is saying I want to implement a simple Sha512 encryption with the C function crypt (3). If you need to generate bcrypt passwords, you can do it fairly simply with the Crypt::Eksblowfish::Bcrypt Perl module. R also works on sha-512, but I'm not sure if its PBKDF-2 or not. If your C library does, it should (and the manpage gives a -R option to set the strength). Unfortunately, my version at least doesn't do bcrypt. Yes, you're looking for mkpasswd, which (at least on Debian) is part of the whois package. Both examples are using $6$ which denotes that you want crypt to use SHA-512. In these examples the password is the string "password" and the salt is "saltsalt". Perl $ perl -e 'print crypt("password","\$6\$saltsalt\$"). Support for this method of specifying the algorithm is dependent on support in OS level crypt(3) library function (usually in libcrypt). $6$saltsalt$qFmFH.bQmmtXzyBY0s9v7Oicd2z4XSIecDzlB5KiA2/jctKu9YterLp8wwnSq.qc.eoxqOmSuNp2xS0kt元nh/ Python (2.x or 3.x) $ python -c "import crypt, getpass, pwd \ or scripted- $ python -c 'import crypt print(crypt.crypt("somesecret", crypt.mksalt(crypt.METHOD_SHA512)))' Take note that these are salted: Python (>= 3.3) $ python -c 'import crypt,getpass print(crypt.crypt(getpass.getpass(), crypt.mksalt(crypt.METHOD_SHA512)))' To work around this you can use the following Python or Perl one-liners to generate SHA-512 passwords. $ yum whatprovides "*/mkpasswd"īoth of these methods are superior to using rpm since the packages do not have to be installed to locate */mkpasswd. You can find out what package it belongs to with either of these commands. NOTE: The command mkpasswd is actually part of the expect package, and should probably be avoided. On any of the Red Hat distros such as Fedora, CentOS, or RHEL the command mkpasswd doesn't include the same set of switches as the version typically included with Debian/Ubuntu.
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