阅读版本：2.0
sha1(tsk_sha1.h)
接口：
tsk_sha1_errcode_t tsk_sha1compute(const char* input, tsk_size_t size, tsk_sha1string_t *result);
在此此接口实现中，使用string中hex值转为字符串的函数接口tsk_str_from_hex
结合uuid来看此接口的应用
time(tsk_time.h)
接口：
uint64_t tsk_time_now();
返回当前时间的无符号整数
UUID(tsk_uuid.h)
接口：
int tsk_uuidgenerate(tsk_uuidstring_t *result);
在此接口实现中应用上述两个接口，看下源代码：
1 /**@defgroup tsk_uuid_group niversally Unique Identifier (UUID version 5) implementation (RFC 4122). 2 */ 3 4 /**@ingroup tsk_uuid_group 5 */ 6 int tsk_uuidgenerate(tsk_uuidstring_t *result) 7 { 8 /* From wikipedia 9 * Version 5 UUIDs use a scheme with SHA-1 hashing, otherwise it is the same idea as in version 3. 10 * RFC 4122 states that version 5 is preferred over version 3 name based UUIDs. 11 * Note that the 160 bit SHA-1 hash is truncated to 128 bits to make the length work out. 12 */ 13 tsk_sha1string_t sha1result; 14 tsk_istr_t now; 15 unsigned i, k; 16 static char HEX[] = "0123456789abcdef"; 17 18 tsk_itoa(tsk_time_now(), &now);// tsk_itoa用法 19 tsk_sha1compute(now, sizeof(now), &sha1result);// tsk_sha1compute用法 20 21 /* XOR the SHA-1 result with random numbers. */ 22 for(i=0; i<(TSK_UUID_DIGEST_SIZE*2); i+=4){ 23 #if 0 24 *((uint32_t*)&sha1result[i]) ^= rand(); 25 #else 26 k = rand(); 27 sha1result[i] ^= k, sha1result[i + 1] ^= k, 28 sha1result[i + 2] ^= k, sha1result[i + 3] ^= k; 29 #endif 30 31 for(k=0; k<sizeof(uint32_t); k++){ 32 sha1result[i+k] = HEX[sha1result[i+k] & 0x0F]; /* To hexa. */ 33 } 34 } 35 36 /* f47ac10b-58cc-4372-a567-0e02b2c3d479 */ 37 memcpy(&(*result)[0], &sha1result[0], 8); 38 (*result)[8] = '-'; 39 40 memcpy(&(*result)[9], &sha1result[8], 4); 41 (*result)[13] = '-'; 42 43 memcpy(&(*result)[14], &sha1result[12], 4); 44 (*result)[18] = '-'; 45 46 memcpy(&(*result)[19], &sha1result[16], 4); 47 (*result)[23] = '-'; 48 49 memcpy(&(*result)[24], &sha1result[20], 12); 50 (*result)[36] = '\0'; 51 52 return 0; 53 }
md5(tsk_md5.h)
接口：
int tsk_md5compute(const char* input, tsk_size_t size, tsk_md5string_t *result);
eg，简单调用：
tsk_md5compute(msgs_md5[i].msg, strlen(msgs_md5[i].msg), &md5result);
base64(tsk_base64.h)
接口：
tsk_size_t tsk_base64_encode(const uint8_t* input, tsk_size_t input_size, char **output);
tsk_size_t tsk_base64_decode(const uint8_t* input, tsk_size_t input_size, char **output);
eg.
size = tsk_base64_encode((const uint8_t*)b64_msgs[i].ascii, strlen(b64_msgs[i].ascii), &output_e);
HMAC(tsk_hmac.h)
HMAC是密钥相关的哈希运算消息认证码（Hash-based Message Authentication Code）,HMAC运算利用哈希算法，以一个密钥和一个消息为输入，生成一个消息摘要作为输出。
接口:
int hmac_md5_compute(const uint8_t* input, tsk_size_t input_size, const char* key, tsk_size_t key_size, tsk_md5string_t *result);
int hmac_md5digest_compute(const uint8_t* input, tsk_size_t input_size, const char* key, tsk_size_t key_size, tsk_md5digest_t result);
int hmac_sha1_compute(const uint8_t* input, tsk_size_t input_size, const char* key, tsk_size_t key_size, tsk_sha1string_t *result);
int hmac_sha1digest_compute(const uint8_t* input, tsk_size_t input_size, const char* key, tsk_size_t key_size, tsk_sha1digest_t result);
【备注】tinySAK部分的代码就阅读到此，其他源码后续应用中阅读
比如，线程，timer，互斥锁等，可以在实际中应用，也可以依据平台使用该平台下提供的对象...
努力学习...