Page MenuHomeFreeBSD
Files F167549556

D25277.id73129.diff
No OneTemporary
Actions

D25277.id73129.diff
View Options

Index: head/sbin/md5/md5.1
===================================================================
--- head/sbin/md5/md5.1
+++ head/sbin/md5/md5.1
@@ -1,5 +1,5 @@
.\" $FreeBSD$
-.Dd July 9, 2018
+.Dd June 15, 2020
.Dt MD5 1
.Os
.Sh NAME
@@ -16,8 +16,8 @@
(All other hashes have the same options and usage.)
.Sh DESCRIPTION
The
-.Nm md5 , sha1 , sha224 , sha256 , sha384 , sha512, sha512t256, rmd160,
-.Nm skein256, skein512,
+.Nm md5 , sha1 , sha224 , sha256 , sha384 , sha512 , sha512t256 , rmd160 ,
+.Nm skein256 , skein512 ,
and
.Nm skein1024
utilities take as input a message of arbitrary length and produce as
@@ -29,43 +29,29 @@
It is conjectured that it is computationally infeasible to
produce two messages having the same message digest, or to produce any
message having a given prespecified target message digest.
-The
-.Tn SHA-224 , SHA-256 , SHA-384 , SHA-512, RIPEMD-160,
-and
-.Tn SKEIN
+The SHA-224 , SHA-256 , SHA-384 , SHA-512, RIPEMD-160,
+and SKEIN
algorithms are intended for digital signature applications, where a
large file must be
.Dq compressed
in a secure manner before being encrypted with a private
(secret)
-key under a public-key cryptosystem such as
-.Tn RSA .
+key under a public-key cryptosystem such as RSA.
.Pp
-The
-.Tn MD5
-and
-.Tn SHA-1
-algorithms have been proven to be vulnerable to practical collision
-attacks and should not be relied upon to produce unique outputs,
+The MD5 and SHA-1 algorithms have been proven to be vulnerable to practical
+collision attacks and should not be relied upon to produce unique outputs,
.Em nor should they be used as part of a cryptographic signature scheme.
As of 2017-03-02, there is no publicly known method to
.Em reverse
-either algorithm, i.e. to find an input that produces a specific
+either algorithm, i.e., to find an input that produces a specific
output.
.Pp
-.Tn SHA-512t256
-is a version of
-.Tn SHA-512
-truncated to only 256 bits.
-On 64-bit hardware, this algorithm is approximately 50% faster than
-.Tn SHA-256
-but with the same level of security.
+SHA-512t256 is a version of SHA-512 truncated to only 256 bits.
+On 64-bit hardware, this algorithm is approximately 50% faster than SHA-256 but
+with the same level of security.
The hashes are not interchangeable.
.Pp
-It is recommended that all new applications use
-.Tn SHA-512
-or
-.Tn SKEIN-512
+It is recommended that all new applications use SHA-512 or SKEIN-512
instead of one of the other hash functions.
.Pp
The following options may be used in any combination and must
@@ -101,7 +87,7 @@
.Sh EXIT STATUS
The
.Nm md5 , sha1 , sha224 , sha256 , sha512 , sha512t256 , rmd160 ,
-.Nm skein256 , skein512,
+.Nm skein256 , skein512 ,
and
.Nm skein1024
utilities exit 0 on success,
@@ -114,7 +100,6 @@
.Xr md5 3 ,
.Xr ripemd 3 ,
.Xr sha 3 ,
-.Xr sha224 3 ,
.Xr sha256 3 ,
.Xr sha384 3 ,
.Xr sha512 3 ,

File Metadata

Mime Type
text/plain
Expires
Sun, Aug 23, 3:17 PM (7 h, 43 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
37093534
Default Alt Text
D25277.id73129.diff (2 KB)

Event Timeline