MD5 IOS
#import <CommonCrypto/CommonDigest.h>
+(NSString*)md5:(NSString *)str
{
const char *cStr = [str UTF8String];
unsigned char result[CC_MD5_DIGEST_LENGTH];
CC_MD5(cStr, (CC_LONG)strlen(cStr), result);
NSMutableString *hash = [NSMutableString string];
for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)
[hash appendFormat:@"%02X", result[i]];
return [hash lowercaseString];
}
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