Shinichi Fuchita / Mbed 2 deprecated Twitter

Twitter with OAuth Example.\\ see also http://www.soramimi.jp/twicpp/index.html

Dependencies:   mbed HTTPClient NTPClient_NetServices EthernetNetIf

hash.cpp@0:7ddb56bfde0c, 2011-03-23 (annotated)

Committer:
soramimi
Date:
Wed Mar 23 19:53:42 2011 +0000
Revision:
0:7ddb56bfde0c

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


soramimi

0:7ddb56bfde0c


     1







soramimi

0:7ddb56bfde0c


     2

#include "oauth.h" // base64 encode fn's.





soramimi

0:7ddb56bfde0c


     3

#include "sha1.h"





soramimi

0:7ddb56bfde0c


     4







soramimi

0:7ddb56bfde0c


     5

#include <string.h>





soramimi

0:7ddb56bfde0c


     6







soramimi

0:7ddb56bfde0c


     7

void hmac_sha1(unsigned char const *key, size_t keylen, unsigned char const *in, size_t inlen, unsigned char *resbuf)





soramimi

0:7ddb56bfde0c


     8

{





soramimi

0:7ddb56bfde0c


     9

    struct SHA1Context inner;





soramimi

0:7ddb56bfde0c


    10

    struct SHA1Context outer;





soramimi

0:7ddb56bfde0c


    11

    unsigned char tmpkey[20];





soramimi

0:7ddb56bfde0c


    12

    unsigned char digest[20];





soramimi

0:7ddb56bfde0c


    13

    unsigned char block[64];





soramimi

0:7ddb56bfde0c


    14







soramimi

0:7ddb56bfde0c


    15

    const int IPAD = 0x36;





soramimi

0:7ddb56bfde0c


    16

    const int OPAD = 0x5c;





soramimi

0:7ddb56bfde0c


    17







soramimi

0:7ddb56bfde0c


    18

    if (keylen > 64) {





soramimi

0:7ddb56bfde0c


    19

        struct SHA1Context keyhash;





soramimi

0:7ddb56bfde0c


    20

        SHA1Reset(&keyhash);





soramimi

0:7ddb56bfde0c


    21

        SHA1Input(&keyhash, key, keylen);





soramimi

0:7ddb56bfde0c


    22

        SHA1Result(&keyhash, tmpkey);





soramimi

0:7ddb56bfde0c


    23

        key = tmpkey;





soramimi

0:7ddb56bfde0c


    24

        keylen = 20;





soramimi

0:7ddb56bfde0c


    25

    }





soramimi

0:7ddb56bfde0c


    26







soramimi

0:7ddb56bfde0c


    27

    for (size_t i = 0; i < sizeof(block); i++) {





soramimi

0:7ddb56bfde0c


    28

        block[i] = IPAD ^ (i < keylen ? key[i] : 0);





soramimi

0:7ddb56bfde0c


    29

    }





soramimi

0:7ddb56bfde0c


    30

    SHA1Reset(&inner);





soramimi

0:7ddb56bfde0c


    31

    SHA1Input(&inner, block, 64);





soramimi

0:7ddb56bfde0c


    32

    SHA1Input(&inner, in, inlen);





soramimi

0:7ddb56bfde0c


    33

    SHA1Result(&inner, digest);





soramimi

0:7ddb56bfde0c


    34







soramimi

0:7ddb56bfde0c


    35

    for (size_t i = 0; i < sizeof(block); i++) {





soramimi

0:7ddb56bfde0c


    36

        block[i] = OPAD ^ (i < keylen ? key[i] : 0);





soramimi

0:7ddb56bfde0c


    37

    }





soramimi

0:7ddb56bfde0c


    38

    SHA1Reset(&outer);





soramimi

0:7ddb56bfde0c


    39

    SHA1Input(&outer, block, 64);





soramimi

0:7ddb56bfde0c


    40

    SHA1Input(&outer, digest, 20);





soramimi

0:7ddb56bfde0c


    41

    SHA1Result(&outer, resbuf);





soramimi

0:7ddb56bfde0c


    42

}





soramimi

0:7ddb56bfde0c


    43







soramimi

0:7ddb56bfde0c


    44







soramimi

0:7ddb56bfde0c


    45

std::string oauth_sign_hmac_sha1(const char *m, const char *k)





soramimi

0:7ddb56bfde0c


    46

{





soramimi

0:7ddb56bfde0c


    47

    return oauth_sign_hmac_sha1_raw(m, strlen(m), k, strlen(k));





soramimi

0:7ddb56bfde0c


    48

}





soramimi

0:7ddb56bfde0c


    49







soramimi

0:7ddb56bfde0c


    50

std::string oauth_sign_hmac_sha1_raw(const char *m, const size_t ml, const char *k, const size_t kl)





soramimi

0:7ddb56bfde0c


    51

{





soramimi

0:7ddb56bfde0c


    52

    unsigned char result[20];





soramimi

0:7ddb56bfde0c


    53

    hmac_sha1((unsigned char const *)k, kl, (unsigned char const *)m, ml, result);





soramimi

0:7ddb56bfde0c


    54

    return oauth_encode_base64(result, 20);





soramimi

0:7ddb56bfde0c


    55

}





soramimi

0:7ddb56bfde0c


    56