使用明文密钥的 3DES 加密

3DES encryption with clear key

我正在尝试使用以下接口编写 Cobol 程序:

Objective

收到明文加密密钥和明文以及 returns 使用 3DES 算法的密文。

输入:

输出:

我可以访问 DB2 and ICSF callable services

我尝试了这三种方法:

使用CSNBSYE

77 CSNBSYE                  PIC X(7) VALUE 'CSNBSYE'.
01 CSNBSYE-PARAMETERS.
   02 RETURN-CODE           PIC 9(8) COMP.
   02 REASON-CODE           PIC 9(8) COMP.
   02 EXIT-DATA-LENGTH      PIC 9(8) COMP.
   02 EXIT-DATA             PIC X(32).
   02 RULE-ARRAY-COUNT      PIC 9(8) COMP.
   02 RULE-ARRAY            PIC X(8).
   02 KEY-IDENTIFIER-LENGTH PIC 9(8) COMP.
   02 KEY-IDENTIFIER        PIC X(32).
   02 KEY-PARMS-LENGTH      PIC 9(8) COMP.
   02 KEY-PARMS             PIC X(32).
   02 BLOCK-SIZE            PIC 9(8) COMP.
   02 INIT-VECTOR-LENGTH    PIC 9(8) COMP.
   02 INIT-VECTOR           PIC X(8).
   02 CHAIN-DATA-LENGTH     PIC 9(8) COMP.
   02 CHAIN-DATA            PIC X(16).
   02 CLEAR-TEXT-LENGTH     PIC 9(8) COMP.
   02 CLEAR-TEXT            PIC X(16).
   02 CYPHERED-TEXT-LENGTH  PIC 9(8) COMP.
   02 CYPHERED-TEXT         PIC X(16).
   02 OPTIONAL-DATA-LENGTH  PIC 9(8) COMP.
   02 OPTIONAL-DATA         PIC X(32).

INITIALIZE CSNBSYE-PARAMETERS.

MOVE 1                                  TO RULE-ARRAY-COUNT.
MOVE 'DES     '                         TO RULE-ARRAY.
MOVE 16                                 TO KEY-IDENTIFIER-LENGTH.
MOVE '2DF65FD88EA9E17E3C66950387F91DE2' TO KEY-IDENTIFIER.
MOVE 8                                  TO BLOCK-SIZE
                                           INIT-VECTOR-LENGTH.
MOVE ALL ZEROS                          TO INIT-VECTOR.
MOVE 16                                 TO CHAIN-DATA-LENGTH.
MOVE LOW-VALUES                         TO CHAIN-DATA.
MOVE 16                                 TO CLEAR-TEXT-LENGTH
                                           CYPHERED-TEXT-LENGTH.
MOVE ALL ZEROS                          TO CLEAR-TEXT.

CALL CSNBSYE USING RETURN-CODE,
                   REASON-CODE,           
                   EXIT-DATA-LENGTH,      
                   EXIT-DATA,             
                   RULE-ARRAY-COUNT,      
                   RULE-ARRAY,            
                   KEY-IDENTIFIER-LENGTH, 
                   KEY-IDENTIFIER,        
                   KEY-PARMS-LENGTH,      
                   KEY-PARMS,             
                   BLOCK-SIZE,           
                   INIT-VECTOR-LENGTH,    
                   INIT-VECTOR,           
                   CHAIN-DATA-LENGTH,    
                   CHAIN-DATA,            
                   CLEAR-TEXT-LENGTH,     
                   CLEAR-TEXT,            
                   CYPHERED-TEXT-LENGTH,  
                   CYPHERED-TEXT,         
                   OPTIONAL-DATA-LENGTH,  
                   OPTIONAL-DATA.

使用CSNBECO

77 CSNBECO                  PIC X(7) VALUE 'CSNBECO'.
01 CSNBECO-PARAMETERS.
   02 RETURN-CODE           PIC 9(8) COMP.
   02 REASON-CODE           PIC 9(8) COMP.
   02 EXIT-DATA-LENGTH      PIC 9(8) COMP.
   02 EXIT-DATA             PIC X(32).
   02 CLEAR-KEY             PIC X(32).
   02 CLEAR-TEXT            PIC X(16).
   02 CYPHERED-TEXT         PIC X(16).

INITIALIZE CSNBECO-PARAMETERS.

MOVE '2DF65FD88EA9E17E3C66950387F91DE2' TO CLEAR-KEY.
MOVE ALL ZEROS                          TO CLEAR-TEXT.

CALL CSNBSYE USING RETURN-CODE,
                   REASON-CODE,           
                   EXIT-DATA-LENGTH,      
                   EXIT-DATA,             
                   CLEAR-KEY,          
                   CLEAR-TEXT,            
                   CYPHERED-TEXT.

使用DB2's ENCRYPT_TDES

01 WS.
   02 CLEAR-TEXT            PIC X(16).
   02 CYPHERED-TEXT         PIC X(16).

   MOVE ALL ZEROS TO CLEAR-TEXT.

   EXEC SQL
        SELECT ENCRYPT_TDES(:CLEAR-TEXT, '2DF65FD88EA9E17E3C66950387F91DE2')
        INTO   :CYPHERED-TEXT
        FROM   SYSIBM.SYSDUMMY1
   END-EXEC.

但是 none 这些方法返回了我预期的结果。我期待的结果与从本网站测试获得的结果相同: http://tripledes.online-domain-tools.com/ ,具有以下数据:

输入类型:文本

输入文本:0000000000000000(十六进制)

函数:3DES

模式:CBC

密钥:2DF65FD88EA9E17E3C66950387F91DE2(十六进制)

初始向量:00 00 00 00 00 00 00 00

加密!

加密文本(结果):87 30 e1 ef 98 3d f2 b4(十六进制)| . 0 á ï = ò ´ (字符串)

我的问题是:如何使用 IBM 提供的任何工具在 Cobol 程序中获得上述结果?

谢谢!

您的大部分困惑似乎来自于您将 hex-strings 误认为 byte-values。例如。您认为您传递 CSNBSYE 一个 '2DF65FD88EA9E17E3C66950387F91DE2'X 的 16 字节密钥,而您传递的是一个以 'F2C4C6F6F5C6C429F8'X 开头的 32 字节字符串 - 即您传递的字符的 EBCDIC-representation。要使用 byte-values 的实际 hex-representation,您必须在文字的结束撇号后附加一个 X

另请注意,将 ZERO 移动到 PIC X 项会导致 'F0'X,而使用 LOW-VALUE 会导致 '00'

另一点是,您似乎将网站的 3DES 结果与 CSNBECO 或 CSNBSYE 的 DES 结果进行比较 - 但它们是不同的密码,因此应该 return 不同的结果。

最后但并非最不重要的一点ENCRYPT_TDES:此函数使用 3DES 但它不接受明文密钥。相反,第二个参数是经过哈希处理以获得最终加密密钥的密码。

因此,在您调查的替代方案中,似乎只有 CSNBSYE 符合您的要求,但您必须研究其确切的 parameter-formats 和用法。

我做到了!代码如下:

77 CT-cENC-ROUTINE                  PIC X(7) VALUE 'CSNBSYE'.
05 WS-ENC.                                        
   10 WS-ENC-nRETURN-CODE           PIC 9(8) COMP.
   10 WS-ENC-nREASON-CODE           PIC 9(8) COMP.
   10 WS-ENC-nEXIT-DATA-LENGTH      PIC 9(8) COMP.
   10 WS-ENC-cEXIT-DATA             PIC X(4).     
   10 WS-ENC-nRULE-ARRAY-COUNT      PIC 9(8) COMP.
   10 WS-ENC-RULE-ARRAY.                          
      15 WS-ENC-cRULE-ALGO          PIC X(8).     
   10 WS-ENC-cKEY-IDENT-LENGTH      PIC 9(8) COMP.
   10 WS-ENC-cKEY-IDENT             PIC X(32).    
   10 WS-ENC-nKEY-PARMS-LENGTH      PIC 9(8) COMP.
   10 WS-ENC-nKEY-PARMS             PIC X(64).    
   10 WS-ENC-nBLOCK-SIZE            PIC 9(8) COMP.
   10 WS-ENC-nINIT-VECTOR-LENGTH    PIC 9(8) COMP.
   10 WS-ENC-cINIT-VECTOR           PIC X(16).    
   10 WS-ENC-nCHAIN-DATA-LENGTH     PIC 9(8) COMP.
   10 WS-ENC-cCHAIN-DATA            PIC X(32).    
   10 WS-ENC-nCLEAR-TEXT-LENGTH     PIC 9(8) COMP.
   10 WS-ENC-cCLEAR-TEXT            PIC X(16).    
   10 WS-ENC-nCYPHER-TEXT-LENGTH    PIC 9(8) COMP.
   10 WS-ENC-cCYPHER-TEXT           PIC X(16).    
   10 WS-ENC-nOPTIONAL-DATA-LENGTH  PIC 9(8) COMP.
   10 WS-ENC-cOPTIONAL-DATA         PIC X(32).    

INITIALIZE WS-ENC                                          

MOVE 1                          TO WS-ENC-nRULE-ARRAY-COUNT
MOVE 'DES'                      TO WS-ENC-cRULE-ALGO       

EXEC SQL                                                 
     SELECT VARCHAR_BIT_FORMAT('2DF65FD88EA9E17E3C66950387F91DE2')
     INTO   :WS-ENC-cKEY-IDENT                                
     FROM   SYSIBM.SYSDUMMY1                             
END-EXEC       

MOVE 16                         TO WS-ENC-cKEY-IDENT-LENGTH   
MOVE 8                          TO WS-ENC-nBLOCK-SIZE                                          
                                   WS-ENC-nINIT-VECTOR-LENGTH
MOVE ALL ZEROS                  TO WS-ENC-cINIT-VECTOR       

MOVE LENGTH OF WS-ENC-cCHAIN-DATA                            
                                TO WS-ENC-nCHAIN-DATA-LENGTH 
MOVE LOW-VALUES                 TO WS-ENC-cCHAIN-DATA        

MOVE LENGTH OF WS-ENC-cCLEAR-TEXT                            
                                TO WS-ENC-nCLEAR-TEXT-LENGTH 
                                   WS-ENC-nCYPHER-TEXT-LENGTH
MOVE '0000000000000000'         TO WS-ENC-cCLEAR-TEXT        

CALL CT-cENC-ROUTINE USING WS-ENC-nRETURN-CODE,         
                           WS-ENC-nREASON-CODE,         
                           WS-ENC-nEXIT-DATA-LENGTH,    
                           WS-ENC-cEXIT-DATA,           
                           WS-ENC-nRULE-ARRAY-COUNT,    
                           WS-ENC-RULE-ARRAY,           
                           WS-ENC-cKEY-IDENT-LENGTH,    
                           WS-ENC-cKEY-IDENT,           
                           WS-ENC-nKEY-PARMS-LENGTH,    
                           WS-ENC-nKEY-PARMS,           
                           WS-ENC-nBLOCK-SIZE,          
                           WS-ENC-nINIT-VECTOR-LENGTH,  
                           WS-ENC-cINIT-VECTOR,         
                           WS-ENC-nCHAIN-DATA-LENGTH,   
                           WS-ENC-cCHAIN-DATA,          
                           WS-ENC-nCLEAR-TEXT-LENGTH,   
                           WS-ENC-cCLEAR-TEXT,          
                           WS-ENC-nCYPHER-TEXT-LENGTH,  
                           WS-ENC-cCYPHER-TEXT          
                           WS-ENC-nOPTIONAL-DATA-LENGTH,
                           WS-ENC-cOPTIONAL-DATA    

因此,缺少的是:1) 将 32 字节的十六进制字符串转换为其 16 字节的字符串表示形式。 2) 链数据大小设为32。