docs: clarify references to md5 hash and md5 crypt in pgcrypto docs

Suggestion from Richard Neill

diff --git a/doc/src/sgml/pgcrypto.sgml b/doc/src/sgml/pgcrypto.sgml
index a0eead7b84e9698b88ee18c18cb0568fbc7ebcaa..976c7db130fc694e8029cab3f0a58392050e2749 100644 (file)
--- a/doc/src/sgml/pgcrypto.sgml
+++ b/doc/src/sgml/pgcrypto.sgml
@@ -95,8 +95,8 @@ hmac(data bytea, key text, type text) returns bytea
   
 
   
-   The algorithms in crypt() differ from usual hashing algorithms
-   like MD5 or SHA1 in the following respects:
+   The algorithms in crypt() differ from the usual 
+   MD5 or SHA1 hashing algorithms in the following respects:
   
 
   
@@ -142,6 +142,7 @@ hmac(data bytea, key text, type text) returns bytea
       Max Password Length
       Adaptive?
       Salt Bits
+      Output length
       Description
      
     
@@ -151,6 +152,7 @@ hmac(data bytea, key text, type text) returns bytea
       72
       yes
       128
+      60
       Blowfish-based, variant 2a
      
      
@@ -158,6 +160,7 @@ hmac(data bytea, key text, type text) returns bytea
       unlimited
       no
       48
+      34
       MD5-based crypt
      
      
@@ -165,6 +168,7 @@ hmac(data bytea, key text, type text) returns bytea
       8
       yes
       24
+      20
       Extended DES
      
      
@@ -172,6 +176,7 @@ hmac(data bytea, key text, type text) returns bytea
       8
       no
       12
+      13
       Original UNIX crypt
      
     
@@ -205,7 +210,7 @@ UPDATE ... SET pswhash = crypt('new password', gen_salt('md5'));
    
     Example of authentication:
 
-SELECT pswhash = crypt('entered password', pswhash) FROM ... ;
+SELECT (pswhash = crypt('entered password', pswhash)) AS pswmatch FROM ... ;
 
     This returns true if the entered password is correct.
    
@@ -353,7 +358,7 @@ gen_salt(type text [, iter_count integer ]) returns text
        12 years
       
       
-       md5
+       md5 hash
        2345086
        1 day
        3 years
@@ -380,7 +385,7 @@ gen_salt(type text [, iter_count integer ]) returns text
     
     
      
-      md5 numbers are from mdcrack 1.2.
+      md5 hash numbers are from mdcrack 1.2.
      
     
     
@@ -1343,7 +1348,7 @@ gen_random_bytes(count integer) returns bytea
       OpenBSD sys/crypto
      
      
-      MD5 and SHA1
+      MD5 hash and SHA1
       WIDE Project
       KAME kame/sys/crypto