NSTimeZone * zone = [NSTimeZone timeZoneForSecondsFromGMT:[NSTimeZone systemTimeZone]];
NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
formatter.timeZone = zone;
[formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSString * locationString = [formatter stringFromDate:[NSDate date]];
NSDateFormatter * formatter1 = [[NSDateFormatter alloc]init];
[formatter1 setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate * date = [formatter dateFromString:locationString];
NSTimeInterval time = [date timeIntervalSince1970];
//yyyyMMdd
NSString *timeStr = [Common timeWithTimeIntervalString:[[NSNumber numberWithLongLong:time] stringValue]];
//The time AES256 key is encrypted with SHA256
NSString *sha256TimeStr = [SHA256 SHA256String:timeStr];
//AES256 encryption
NSString *aesStr = [SecurityUtil encryptAESData:txtPwd key:sha256TimeStr];
#import <Foundation/Foundation.h>
@interface SHA256 : NSObject
//sha256 encryption method prevents data from being tampered with
+ (NSString *)SHA256String:(NSString *)srcString;
@end
#import "SHA256.h"
#import<CommonCrypto/CommonDigest.h>
@implementation SHA256
//sha256 encryption method
+ (NSString *)SHA256String:(NSString *)srcString
{
const char *cstr = [srcString cStringUsingEncoding:NSUTF8StringEncoding];
NSData *data = [NSData dataWithBytes:cstr length:srcString.length];
uint8_t digest[CC_SHA256_DIGEST_LENGTH];
CC_SHA256(data.bytes, (CC_LONG)data.length, digest);
NSMutableString* result = [NSMutableString stringWithCapacity:CC_SHA256_DIGEST_LENGTH * 2];
for (int i = 0; i < CC_SHA256_DIGEST_LENGTH; i++) {
[result appendFormat:@"%02x", digest[i]];
}
return result;
}
@end
#import <Foundation/Foundation.h>
@class NSString;
@interface NSData (Encryption)
- (NSData *)AES128EncryptWithKey:(NSString *)key gIv:(NSString *)Iv; //加密
- (NSData *)AES128DecryptWithKey:(NSString *)key gIv:(NSString *)Iv; //解密
@end
#import "NSData+AES.h"
#import <CommonCrypto/CommonCryptor.h>
@implementation NSData (Encryption)
//(key和iv向量这里是16位的) 这里是CBC加密模式，安全性更高
- (NSData *)AES128EncryptWithKey:(NSString *)key gIv:(NSString *)Iv{ //加密
char keyPtr[kCCKeySizeAES128+1];
bzero(keyPtr, sizeof(keyPtr));
[key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
char ivPtr[kCCKeySizeAES128+1];
memset(ivPtr, 0, sizeof(ivPtr));
[Iv getCString:ivPtr maxLength:sizeof(ivPtr) encoding:NSUTF8StringEncoding];
NSUInteger dataLength = [self length];
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);
size_t numBytesEncrypted = 0;
//以前加密的字节数组是写死的
//Byte byte[] = {90, 74, 32, 114, -25, -16, 89, -24, -39, 41, -117, -115, 0, 54, -37, -124};
//日期加密后的字节数据 服务器说太长 他不能解析 所以和安卓取加密后字节数组的前16位
NSData* keyData = [key dataUsingEncoding:NSUTF8StringEncoding];
Byte *keyByte = (Byte *)[keyData bytes];
Byte byte[16];
for(int i = 0; i < 16; i++) {
byte[i] = keyByte[i];
//printf("keyByte = %d\n",keyByte[i]);
}
// for(int i = 0; i < 16; i++) {
// printf("byte[%d] = %d\n", i, byte[i]);
// }
NSData *salt = [NSData dataWithBytes:byte length:kCCKeySizeAES128];
CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt,
kCCAlgorithmAES128,
kCCOptionPKCS7Padding,
salt.bytes,
kCCBlockSizeAES128,
ivPtr,
[self bytes],
dataLength,
buffer,
bufferSize,
&numBytesEncrypted);
if (cryptStatus == kCCSuccess) {
return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
}
free(buffer);
return nil;
}
- (NSData *)AES128DecryptWithKey:(NSString *)key gIv:(NSString *)Iv{ //解密
char keyPtr[kCCKeySizeAES128+1];
bzero(keyPtr, sizeof(keyPtr));
[key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
char ivPtr[kCCKeySizeAES128+1];
memset(ivPtr, 0, sizeof(ivPtr));
[Iv getCString:ivPtr maxLength:sizeof(ivPtr) encoding:NSUTF8StringEncoding];
NSUInteger dataLength = [self length];
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);
size_t numBytesDecrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt,
kCCAlgorithmAES128,
kCCOptionPKCS7Padding,
keyPtr,
kCCBlockSizeAES128,
ivPtr,
[self bytes],
dataLength,
buffer,
bufferSize,
&numBytesDecrypted);
if (cryptStatus == kCCSuccess) {
return [NSData dataWithBytesNoCopy:buffer length:numBytesDecrypted];
}
free(buffer);
return nil;
}
#import <Foundation/Foundation.h>
@interface SecurityUtil : NSObject
#pragma mark - base64
+ (NSString*)encodeBase64String:(NSString *)input;
+ (NSString*)decodeBase64String:(NSString *)input;
+ (NSString*)encodeBase64Data:(NSData *)data;
+ (NSString*)decodeBase64Data:(NSData *)data;
#pragma mark - AES加密
//将string转成带密码的data
+ (NSString*)encryptAESData:(NSString*)string;
//将带密码的data转成string
+ (NSString*)decryptAESData:(NSString*)string;
//将string转成带密码的data 带key
+(NSString*)encryptAESData:(NSString*)string key:(NSString *)key;
@end
#import "SecurityUtil.h"
#import "GTMBase64.h"
#import "NSData+AES.h"
#define Iv @"0392039203920300" //偏移量,可自行修改
#define KEY @"smkldospdosldaaa" //key，可自行修改
@implementation SecurityUtil
#pragma mark - base64
+ (NSString*)encodeBase64String:(NSString * )input {
NSData *data = [input dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
data = [GTMBase64 encodeData:data];
NSString *base64String = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
return base64String;
}
+ (NSString*)decodeBase64String:(NSString * )input {
NSData *data = [input dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
data = [GTMBase64 decodeData:data];
NSString *base64String = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
return base64String;
}
+ (NSString*)encodeBase64Data:(NSData *)data {
data = [GTMBase64 encodeData:data];
NSString *base64String = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
return base64String;
}
+ (NSString*)decodeBase64Data:(NSData *)data {
data = [GTMBase64 decodeData:data];
NSString *base64String = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
return base64String;
}
#pragma mark - AES加密
//将string转成带密码的data
+(NSString*)encryptAESData:(NSString*)string
{
//将nsstring转化为nsdata
NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
//使用密码对nsdata进行加密
NSData *encryptedData = [data AES128EncryptWithKey:KEY gIv:Iv];
//返回进行base64进行转码的加密字符串
return [self encodeBase64Data:encryptedData];
}
//将string转成带密码的data 带key
+(NSString*)encryptAESData:(NSString*)string key:(NSString *)key
{
//将nsstring转化为nsdata
NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
//使用密码对nsdata进行加密
NSData *encryptedData = [data AES128EncryptWithKey:key gIv:Iv];
//返回进行base64进行转码的加密字符串
return [self encodeBase64Data:encryptedData];
}
#pragma mark - AES解密
//将带密码的data转成string
+(NSString*)decryptAESData:(NSString *)string
{
//base64解密
NSData *decodeBase64Data=[GTMBase64 decodeString:string];
//使用密码对data进行解密
NSData *decryData = [decodeBase64Data AES128DecryptWithKey:KEY gIv:Iv];
//将解了密码的nsdata转化为nsstring
NSString *str = [[NSString alloc] initWithData:decryData encoding:NSUTF8StringEncoding];
return str;
}
@end