ios--md5加密

#import <CommonCrypto/CommonDigest.h>

- (NSString *)md5HexDigest:(NSString*)password
{
const char *original_str = [password UTF8String];
unsigned char result[CC_MD5_DIGEST_LENGTH];
CC_MD5(original_str, strlen(original_str), result);
NSMutableString *hash = [NSMutableString string];
for (int i = 0; i < 16; i++)
{
[hash appendFormat:@"%02X", result[i]];
}
NSString *mdfiveString = [hash lowercaseString];

NSLog(@"Encryption Result = %@",mdfiveString);
return mdfiveString;
}