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

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Suggestion from Richard Neill
This commit is contained in:
Bruce Momjian 2013-10-08 12:24:02 -04:00
parent 9299f61798
commit 9c29138c75
1 changed files with 11 additions and 6 deletions
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17
doc/src/sgml/pgcrypto.sgml
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@ -95,8 +95,8 @@ hmac(data bytea, key text, type text) returns bytea
</para>
<para>
The algorithms in <function>crypt()</> differ from usual hashing algorithms
like MD5 or SHA1 in the following respects:
The algorithms in <function>crypt()</> differ from the usual
MD5 or SHA1 hashing algorithms in the following respects:
</para>
<orderedlist>
@ -142,6 +142,7 @@ hmac(data bytea, key text, type text) returns bytea
<entry>Max Password Length</entry>
<entry>Adaptive?</entry>
<entry>Salt Bits</entry>
<entry>Output length</entry>
<entry>Description</entry>
</row>
</thead>
@ -151,6 +152,7 @@ hmac(data bytea, key text, type text) returns bytea
<entry>72</entry>
<entry>yes</entry>
<entry>128</entry>
<entry>60</entry>
<entry>Blowfish-based, variant 2a</entry>
</row>
<row>
@ -158,6 +160,7 @@ hmac(data bytea, key text, type text) returns bytea
<entry>unlimited</entry>
<entry>no</entry>
<entry>48</entry>
<entry>34</entry>
<entry>MD5-based crypt</entry>
</row>
<row>
@ -165,6 +168,7 @@ hmac(data bytea, key text, type text) returns bytea
<entry>8</entry>
<entry>yes</entry>
<entry>24</entry>
<entry>20</entry>
<entry>Extended DES</entry>
</row>
<row>
@ -172,6 +176,7 @@ hmac(data bytea, key text, type text) returns bytea
<entry>8</entry>
<entry>no</entry>
<entry>12</entry>
<entry>13</entry>
<entry>Original UNIX crypt</entry>
</row>
</tbody>
@ -205,7 +210,7 @@ UPDATE ... SET pswhash = crypt('new password', gen_salt('md5'));
<para>
Example of authentication:
<programlisting>
SELECT pswhash = crypt('entered password', pswhash) FROM ... ;
SELECT (pswhash = crypt('entered password', pswhash)) AS pswmatch FROM ... ;
</programlisting>
This returns <literal>true</> if the entered password is correct.
</para>
@ -353,7 +358,7 @@ gen_salt(type text [, iter_count integer ]) returns text
<entry>12 years</entry>
</row>
<row>
<entry><literal>md5</></entry>
<entry><literal>md5 hash</></entry>
<entry>2345086</entry>
<entry>1 day</entry>
<entry>3 years</entry>
@ -380,7 +385,7 @@ gen_salt(type text [, iter_count integer ]) returns text
</listitem>
<listitem>
<para>
<literal>md5</> numbers are from mdcrack 1.2.
<literal>md5 hash</> numbers are from mdcrack 1.2.
</para>
</listitem>
<listitem>
@ -1343,7 +1348,7 @@ gen_random_bytes(count integer) returns bytea
<entry>OpenBSD sys/crypto</entry>
</row>
<row>
<entry>MD5 and SHA1</entry>
<entry>MD5 hash and SHA1</entry>
<entry>WIDE Project</entry>
<entry>KAME kame/sys/crypto</entry>
</row>