DSA signed message of smime-example-07 document

["Masui, Takanori" <takanori.masui@xxxxxxxxxxxxxxx>]

I have a following question on this document.


5.1(Basic signed content,DSS) and 5.3(Basic signed content,detached
content)
are signed message which are signed by Alice's DSA private key.

5.1 has internal content included in eConente, 
which is "This is some sample content."

and

5.3 has external content,
which is "This is some sample content."

So the same content was signed by Alice in 5.1 and 5.2.

However,the signature value is different.
These example has no signed attribute,
then I expect they have same signature.

5.1 signature

   881 04   48:           OCTET STRING, encapsulates {
   883 30   45:               SEQUENCE {
   885 02   20:                 INTEGER
              :                   08 D0 45 7D 63 E1 39 EC 62 B0 30 C2 29
AD 42 EA
              :                   96 4F 91 86
   907 02   21:                 INTEGER
              :                   00 A6 86 EE 8A 7A 05 A7 E0 07 E6 F9 88
BF 93 FB
              :                   96 4D 76 D3 92
	   			}
			}
5.3 signature

   849 04   48:           OCTET STRING, encapsulates {
   851 30   44:               SEQUENCE {
   853 02   20:                 INTEGER
              :                   15 D0 DC EE FF D4 36 5B 93 0D CF 69 3D
37 45 A0
              :                   34 9A 63 35
   875 02   20:                 INTEGER
              :                   49 75 76 4C 33 00 0A AB 90 FD EF 9C 47
80 21 F1
              :                   49 EA 02 15
				}
			  }

I wonder if I am misunderstanding.

Signature calculating process which I'm understading is following

"This is some sample content." ->digest(SHA1)->406a ec08 5279 ba6e 1602
2d9e 0629 c022 9687 dd48
->DSASign(AlicePrivKey)

Please clarify my understading.

Thank you in advance,

//Takanori Masui