diff options
Diffstat (limited to 'manual/crypt.texi')
| -rw-r--r-- | manual/crypt.texi | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/manual/crypt.texi b/manual/crypt.texi index 2e08abe753..68ae6dd651 100644 --- a/manual/crypt.texi +++ b/manual/crypt.texi @@ -152,14 +152,11 @@ For the DES-based algorithm, the @var{salt} should consist of two characters from the alphabet @code{./0-9A-Za-z}, and the result of @code{crypt} will be those two characters followed by 11 more from the same alphabet, 13 in total. Only the first 8 characters in the -@var{key} are significant. If the @code{crypt} add-on is not installed, -trying to use the DES-based algorithm will return an empty string and -set @code{errno} to @code{EOPNOTSUPP}. +@var{key} are significant. -The MD5-based algorithm is available in the GNU C library even if the -@code{crypt} add-on is not installed. It also has no limit on the -useful length of the password used, and is slightly more secure. It is -therefore preferred over the DES-based algorithm. +The MD5-based algorithm has no limit on the useful length of the +password used, and is slightly more secure. It is therefore preferred +over the DES-based algorithm. When the user enters their password for the first time, the @var{salt} should be set to a new string which is reasonably random. To verify a @@ -271,11 +268,6 @@ The @code{setkey_r} and @code{encrypt_r} functions are GNU extensions. @code{setkey}, @code{encrypt}, @code{setkey_r}, and @code{encrypt_r} are defined in @file{crypt.h}. -If the @code{crypt} add-on is not used to build the library, programs -that use these four functions will crash when the functions are called. -If this is a problem, the @code{ecb_crypt} function described below is -recommended instead. - @comment rpc/des_crypt.h @comment SUNRPC @deftypefun int ecb_crypt (char *@var{key}, char *@var{blocks}, unsigned @var{len}, unsigned @var{mode}) @@ -340,9 +332,7 @@ The encryption succeeded, but there was no hardware device available. @comment rpc/des_crypt.h @comment SUNRPC @item DESERR_HWERROR -The encryption failed because of a hardware problem. In the GNU -library, this error code is also returned if the @code{crypt} add-on was -not used to build the library. +The encryption failed because of a hardware problem. @comment rpc/des_crypt.h @comment SUNRPC |