diff options
Diffstat (limited to 'lib/libc/gen/crypt.3')
| -rw-r--r-- | lib/libc/gen/crypt.3 | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/lib/libc/gen/crypt.3 b/lib/libc/gen/crypt.3 index 7ecf0cf..8e19bd9 100644 --- a/lib/libc/gen/crypt.3 +++ b/lib/libc/gen/crypt.3 @@ -29,9 +29,9 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" @(#)crypt.3 8.1.1.1 (Berkeley) 8/18/93 +.\" @(#)crypt.3 8.2 (Berkeley) 12/11/93 .\" -.Dd August 18, 1993 +.Dd December 11, 1993 .Dt CRYPT 3 .Os .Sh NAME @@ -54,7 +54,7 @@ .Fn des_cipher "const char *in" "char *out" "long salt" "int count" .Sh DESCRIPTION The -.Xr crypt +.Fn crypt function performs password encryption. It is derived from the @@ -161,8 +161,9 @@ If the value of is 0, the argument .Fa block -is encrypted, otherwise it fails. -The encryption is returned in the original +is encrypted, otherwise it +is decrypted. +The encryption or decryption is returned in the original array .Fa block after using the @@ -188,7 +189,9 @@ significant bit in each character is ignored and the next 7 bits of each character are concatenated to yield a 56-bit key. The function .Fn des_cipher -encrypts the 64-bits stored in the 8 characters at +encrypts (or decrypts if +.Fa count +is negative) the 64-bits stored in the 8 characters at .Fa in using .Xr abs 3 @@ -223,12 +226,27 @@ They have been provided return values primarily to distinguish implementations where hardware support is provided but not available or where the DES encryption is not available due to the usual political silliness. +.Pp +Use of +.Fn crypt +requires linking with the +.Nm libcrypt +library. The +.Fn setkey , +.Fn encrypt , +.Fn des_setkey +and +.Fn des_cipher +can be found in the +.Nm libcipher +library (the standard C library, +.Nm libc , +only contains stubs to these routines). .Sh SEE ALSO .Xr login 1 , .Xr passwd 1 , .Xr getpass 3 , .Xr passwd 5 -.sp .Rs .%T "Mathematical Cryptology for Computer Scientists and Mathematicians" .%A Wayne Patterson |
