iOS MD5加密

导入

#include <CommonCrypto/CommonDigest.h>

+ (NSString *)md5HexDigest:(NSString*)input

{

const char* str = [input
UTF8String];

unsigned
char result[CC_MD5_DIGEST_LENGTH];

CC_MD5(str, (CC_LONG)(strlen(str)), result);

NSMutableString *ret = [NSMutableString
stringWithCapacity:CC_MD5_DIGEST_LENGTH*2];//

for(int i =
0; i<CC_MD5_DIGEST_LENGTH; i++) {

[ret appendFormat:@"%02x",result[i]];

}

return ret;

}