SQL 加密方法(MD5,SHA1,MD2,MD3,MD4等)
常用于找回密码时,系统生成随机密码的情况.
1
--
=============================================
2--
Author: 飘渺峰
3--
Create date: 2009-03-30
4--
Description: 获取指定长度的随机字符串
5--
=============================================
6
ALTER
PROCEDURE
Proc_GetRankString
7
@iLen
INT
,
8
@result
VARCHAR
(
MAX
) OUTPUT
9
10
/*
11
DECLARE @temp VARCHAR(50)
12 SET @temp = '';
13 EXEC PROC_GETRankString 15, @temp OUTPUT
14 SELECT @temp
15
*/
16
AS
17
BEGIN
18
SET
@result
=
''
;
19
DECLARE
@STR
VARCHAR
(
MAX
),
@INT
INT
,
@iCount
INT
20
SET
@STR
=
''
;
SET
@INT
=
0
;
SET
@iCount
=
0
;
21
IF
@ilen
<=
0
SET
@ilen
=
8
;
22
IF
@ilen
>=
30
SET
@ilen
=
30
;
23
24
WHILE
@ilen
>
@iCount
25
BEGIN
26
SET
@INT
=
CAST
(
CEILING
(
RAND
()
*
38
)
AS
INT
)
27
SET
@STR
=
CASE
28
WHEN
@INT
=
1
THEN
@STR
+
'
A
'
29
WHEN
@INT
=
2
THEN
@STR
+
'
B
'
30
WHEN
@INT
=
3
THEN
@STR
+
'
C
'
31
WHEN
@INT
=
4
THEN
@STR
+
'
D
'
32
WHEN
@INT
=
5
THEN
@STR
+
'
E
'
33
WHEN
@INT
=
6
THEN
@STR
+
'
F
'
34
WHEN
@INT
=
7
THEN
@STR
+
'
G
'
35
WHEN
@INT
=
8
THEN
@STR
+
'
H
'
36
--
WHEN @INT = 9 THEN @STR + 'I'
37
WHEN
@INT
=
10
THEN
@STR
+
'
J
'
38
WHEN
@INT
=
11
THEN
@STR
+
'
K
'
39
WHEN
@INT
=
12
THEN
@STR
+
'
L
'
40
WHEN
@INT
=
13
THEN
@STR
+
'
M
'
41
WHEN
@INT
=
14
THEN
@STR
+
'
N
'
42
WHEN
@INT
=
15
THEN
@STR
+
'
O
'
43
WHEN
@INT
=
16
THEN
@STR
+
'
P
'
44
WHEN
@INT
=
17
THEN
@STR
+
'
Q
'
45
WHEN
@INT
=
18
THEN
@STR
+
'
R
'
46
WHEN
@INT
=
19
THEN
@STR
+
'
S
'
47
WHEN
@INT
=
20
THEN
@STR
+
'
T
'
48
WHEN
@INT
=
21
THEN
@STR
+
'
U
'
49
WHEN
@INT
=
22
THEN
@STR
+
'
V
'
50
WHEN
@INT
=
23
THEN
@STR
+
'
W
'
51
WHEN
@INT
=
24
THEN
@STR
+
'
X
'
52
WHEN
@INT
=
25
THEN
@STR
+
'
Y
'
53
WHEN
@INT
=
26
THEN
@STR
+
'
Z
'
54
WHEN
@INT
=
27
THEN
@STR
+
'
1
'
55
WHEN
@INT
=
28
THEN
@STR
+
'
2
'
56
WHEN
@INT
=
29
THEN
@STR
+
'
3
'
57
WHEN
@INT
=
30
THEN
@STR
+
'
4
'
58
WHEN
@INT
=
31
THEN
@STR
+
'
5
'
59
WHEN
@INT
=
32
THEN
@STR
+
'
6
'
60
WHEN
@INT
=
33
THEN
@STR
+
'
7
'
61
WHEN
@INT
=
34
THEN
@STR
+
'
8
'
62
WHEN
@INT
=
35
THEN
@STR
+
'
9
'
63
WHEN
@INT
=
36
THEN
@STR
+
'
_
'
64
WHEN
@INT
=
37
THEN
@STR
+
'
%
'
65
WHEN
@INT
=
38
THEN
@STR
+
'
$
'
66
ELSE
67
@STR
+
'
A
'
68
END
69
SET
@iCount
=
@iCount
+
1
;
70
END
71
SET
@result
=
@STR
;
72
END
73
/*
74转载请说明出处,谢谢
75*/
--
=============================================
2
--
Author: 飘渺峰
3
--
Create date: 2009-03-30
4
--
Description: 获取指定长度的随机字符串
5
--
=============================================
6
ALTER
PROCEDURE
Proc_GetRankString 7
@iLen
INT
,8
@result
VARCHAR
(
MAX
) OUTPUT9
10
/*
11
DECLARE @temp VARCHAR(50)12
SET @temp = '';13
EXEC PROC_GETRankString 15, @temp OUTPUT14
SELECT @temp15
*/
16
AS
17
BEGIN
18
SET
@result
=
''
;19
DECLARE
@STR
VARCHAR
(
MAX
),
@INT
INT
,
@iCount
INT
20
SET
@STR
=
''
;
SET
@INT
=
0
;
SET
@iCount
=
0
;21
IF
@ilen
<=
0
SET
@ilen
=
8
;22
IF
@ilen
>=
30
SET
@ilen
=
30
;23
24
WHILE
@ilen
>
@iCount
25
BEGIN
26
SET
@INT
=
CAST
(
CEILING
(
RAND
()
*
38
)
AS
INT
)27
SET
@STR
=
CASE
28
WHEN
@INT
=
1
THEN
@STR
+
'
A
'
29
WHEN
@INT
=
2
THEN
@STR
+
'
B
'
30
WHEN
@INT
=
3
THEN
@STR
+
'
C
'
31
WHEN
@INT
=
4
THEN
@STR
+
'
D
'
32
WHEN
@INT
=
5
THEN
@STR
+
'
E
'
33
WHEN
@INT
=
6
THEN
@STR
+
'
F
'
34
WHEN
@INT
=
7
THEN
@STR
+
'
G
'
35
WHEN
@INT
=
8
THEN
@STR
+
'
H
'
36
--
WHEN @INT = 9 THEN @STR + 'I'
37
WHEN
@INT
=
10
THEN
@STR
+
'
J
'
38
WHEN
@INT
=
11
THEN
@STR
+
'
K
'
39
WHEN
@INT
=
12
THEN
@STR
+
'
L
'
40
WHEN
@INT
=
13
THEN
@STR
+
'
M
'
41
WHEN
@INT
=
14
THEN
@STR
+
'
N
'
42
WHEN
@INT
=
15
THEN
@STR
+
'
O
'
43
WHEN
@INT
=
16
THEN
@STR
+
'
P
'
44
WHEN
@INT
=
17
THEN
@STR
+
'
Q
'
45
WHEN
@INT
=
18
THEN
@STR
+
'
R
'
46
WHEN
@INT
=
19
THEN
@STR
+
'
S
'
47
WHEN
@INT
=
20
THEN
@STR
+
'
T
'
48
WHEN
@INT
=
21
THEN
@STR
+
'
U
'
49
WHEN
@INT
=
22
THEN
@STR
+
'
V
'
50
WHEN
@INT
=
23
THEN
@STR
+
'
W
'
51
WHEN
@INT
=
24
THEN
@STR
+
'
X
'
52
WHEN
@INT
=
25
THEN
@STR
+
'
Y
'
53
WHEN
@INT
=
26
THEN
@STR
+
'
Z
'
54
WHEN
@INT
=
27
THEN
@STR
+
'
1
'
55
WHEN
@INT
=
28
THEN
@STR
+
'
2
'
56
WHEN
@INT
=
29
THEN
@STR
+
'
3
'
57
WHEN
@INT
=
30
THEN
@STR
+
'
4
'
58
WHEN
@INT
=
31
THEN
@STR
+
'
5
'
59
WHEN
@INT
=
32
THEN
@STR
+
'
6
'
60
WHEN
@INT
=
33
THEN
@STR
+
'
7
'
61
WHEN
@INT
=
34
THEN
@STR
+
'
8
'
62
WHEN
@INT
=
35
THEN
@STR
+
'
9
'
63
WHEN
@INT
=
36
THEN
@STR
+
'
_
'
64
WHEN
@INT
=
37
THEN
@STR
+
'
%
'
65
WHEN
@INT
=
38
THEN
@STR
+
'
$
'
66
ELSE
67
@STR
+
'
A
'
68
END
69
SET
@iCount
=
@iCount
+
1
; 70
END
71
SET
@result
=
@STR
;72
END
73
/*74
转载请说明出处,谢谢75
*/