1#include "libc.h" 2#include <crypt.h> 3 4struct crypt_data; 5 6char* __crypt_des(const char*, const char*, char*); 7char* __crypt_md5(const char*, const char*, char*); 8char* __crypt_blowfish(const char*, const char*, char*); 9char* __crypt_sha256(const char*, const char*, char*); 10char* __crypt_sha512(const char*, const char*, char*); 11 12char* __crypt_r(const char* key, const char* salt, struct crypt_data* data) { 13 /* Per the crypt_r API, the caller has provided a pointer to 14 * struct crypt_data; however, this implementation does not 15 * use the structure to store any internal state, and treats 16 * it purely as a char buffer for storing the result. */ 17 char* output = (char*)data; 18 if (salt[0] == '$' && salt[1] && salt[2]) { 19 if (salt[1] == '1' && salt[2] == '$') 20 return __crypt_md5(key, salt, output); 21 if (salt[1] == '2' && salt[3] == '$') 22 return __crypt_blowfish(key, salt, output); 23 if (salt[1] == '5' && salt[2] == '$') 24 return __crypt_sha256(key, salt, output); 25 if (salt[1] == '6' && salt[2] == '$') 26 return __crypt_sha512(key, salt, output); 27 } 28 return __crypt_des(key, salt, output); 29} 30 31weak_alias(__crypt_r, crypt_r); 32