iOS NSString类别的常用加密+验证方法
2017-04-19 本文已影响89人
huangxiongbiao
使用背景：
app开发过程中，经常需要对输入提交的内容进行验证格式（如：电话号码，身份证等）可以使用类别的方法简单搞定。另外常用加密也可以进行封装，方方便正常开发使用
代码如下：
.h文件
#import <Foundation/Foundation.h>
#import <CommonCrypto/CommonCryptor.h>
#import <CommonCrypto/CommonDigest.h>
#import "GTMBase64.h"
#define iOSLess8_0 [[[UIDevice currentDevice] systemVersion] doubleValue] < 8.0
@interface NSString (Category)
+ (const char *)UnicodeToISO88591:(NSString *)src;
+ (NSString *)_859ToUTF8:(NSString *)oldStr;
+ (NSString *)stringFromHexString:(NSString *)hexString;
+ (NSString *)hexStringFromString:(NSString *)string;
+ (NSData *)DESEncrypt:(NSData *)data WithKey:(NSString *)key;
+ (NSData *)DESDecrypt:(NSData *)data WithKey:(NSString *)key;
+(NSData *)TripleDES:(NSString *)plainText encryptOrDecrypt:(CCOperation)encryptOrDecrypt encryptOrDecryptKey:(NSString *)encryptOrDecryptKey;
+ (NSString *)md5:(NSString *)str;
//验证
+ (BOOL) validateEmail:(NSString *)email;
+ (BOOL) validateMobile:(NSString *)mobile;
+ (BOOL) validateCarNo:(NSString *)carNo;
+ (BOOL) validateCarType:(NSString *)CarType;
+ (BOOL) validateUserName:(NSString *)name;
+ (BOOL) validateNickname:(NSString *)nickname;
+ (BOOL) validateIdentityCard: (NSString *)identityCard;
#ifdef iOSLess8_0
-(BOOL)containsString:(NSString *)str;
#endif
@end
.m文件
#import "NSString+Category.h"
#import <CommonCrypto/CommonDigest.h>
//threeKey=====57566778E82E07A12017042283723415==
//keyId====F3EFC2F26C66006D===
//pinkdata ==<47dff4b5 dad06c1e>==(null)+
//pinkey====<47dff4b5 dad06c1e>==
//randomstr+pid==4634313234454142==7a9860eca85a1e56==
//key+data===<47dff4b5 dad06c1e>+<46343132 34454142>
//=0
//key+data===<47dff4b5 dad06c1e>+<7a9860ec a85a1e56>
//data1+data2==<821da271 e37b4b0b>+<3cf9d4f1 0c03d3cd>
//key+data===<821da271 e37b4b0b>+<3cf9d4f1 0c03d3cd>
//keyData====<57488727 1c7dcdfc>
@implementation NSString (Category)
+ (const char *)UnicodeToISO88591:(NSString *)src
{
NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingISOLatin1);
return [src cStringUsingEncoding:enc];
}
+ (NSString *)_859ToUTF8:(NSString *)oldStr
{
NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingISOLatin1);
return [NSString stringWithUTF8String:[oldStr cStringUsingEncoding:enc]];
}
// 十六进制转换为普通字符串的。
+ (NSString *)stringFromHexString:(NSString *)hexString { //
char *myBuffer = (char *)malloc((int)[hexString length] / 2 + 1);
bzero(myBuffer, [hexString length] / 2 + 1);
for (int i = 0; i < [hexString length] - 1; i += 2) {
unsigned int anInt;
NSString * hexCharStr = [hexString substringWithRange:NSMakeRange(i, 2)];
NSScanner * scanner = [[NSScanner alloc] initWithString:hexCharStr];
[scanner scanHexInt:&anInt];
myBuffer[i / 2] = (char)anInt;
}
NSString *unicodeString = [NSString stringWithCString:myBuffer encoding:4];
// NSLog(@"------字符串=======%@",unicodeString);
return unicodeString;
}
//普通字符串转换为十六进制的。
+ (NSString *)hexStringFromString:(NSString *)string{
NSData *myD = [string dataUsingEncoding:NSUTF8StringEncoding];
Byte *bytes = (Byte *)[myD bytes];
//下面是Byte 转换为16进制。
NSString *hexStr=@"";
for(int i=0;i<[myD length];i++)
{
NSString *newHexStr = [NSString stringWithFormat:@"%x",bytes[i]&0xff];///16进制数
if([newHexStr length]==1)
hexStr = [NSString stringWithFormat:@"%@0%@",hexStr,newHexStr];
else
hexStr = [NSString stringWithFormat:@"%@%@",hexStr,newHexStr];
}
return hexStr;
}
/******************************************************************************
函数名称 : + (NSData *)DESEncrypt:(NSData *)data WithKey:(NSString *)key
函数描述 : 文本数据进行DES加密
输入参数 : (NSData *)data
(NSString *)key
输出参数 : N/A
返回参数 : (NSData *)
备注信息 : 此函数不可用于过长文本
******************************************************************************/
+ (NSData *)DESEncrypt:(NSData *)data WithKey:(NSString *)key
{
// char keyPtr[kCCKeySizeAES256+1];
// bzero(keyPtr, sizeof(keyPtr));
//
// [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
const void *vkey ;//= (const void *)[encryptOrDecryptKey UTF8String];
DDLog(@"key+data===%@+%@",[NSData dataWithHexString:key],data);
vkey = [[NSData dataWithHexString:key] bytes];
NSUInteger dataLength = [data length];
// CCCryptorStatus ccStatus;
// uint8_t *bufferPtr = NULL;
// size_t bufferPtrSize = 0;
// size_t movedBytes = 0;
// ccStatus = CCCrypt(encryptOrDecrypt,
// kCCAlgorithm3DES,
// kCCOptionPKCS7Padding | kCCOptionECBMode,
// vkey,
// kCCKeySize3DES,
// nil,
// vplainText,
// plainTextBufferSize,
// (void *)bufferPtr,
// bufferPtrSize,
// &movedBytes);
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);
// uint8_t *buffer = malloc(8);
// size_t bufferSize = 8;
size_t numBytesEncrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmDES,
kCCOptionPKCS7Padding | kCCOptionECBMode,
vkey, 8,
nil,
[data bytes], 8,
(void*)buffer, bufferSize
,&numBytesEncrypted);
NSLog(@"=%d",cryptStatus);
if (cryptStatus == kCCSuccess) {
return [NSData dataWithBytesNoCopy:buffer length:8];
}
free(buffer);
return nil;
}
/******************************************************************************
函数名称 : + (NSData *)DESEncrypt:(NSData *)data WithKey:(NSString *)key
函数描述 : 文本数据进行DES解密
输入参数 : (NSData *)data
(NSString *)key
输出参数 : N/A
返回参数 : (NSData *)
备注信息 : 此函数不可用于过长文本
******************************************************************************/
+ (NSData *)DESDecrypt:(NSData *)data WithKey:(NSString *)key
{
char keyPtr[kCCKeySizeAES256+1];
bzero(keyPtr, sizeof(keyPtr));
[key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
NSUInteger dataLength = [data length];
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);
size_t numBytesDecrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, kCCAlgorithmDES,
kCCOptionPKCS7Padding | kCCOptionECBMode,
keyPtr, kCCBlockSizeDES,
NULL,
[data bytes], dataLength,
buffer, bufferSize,
&numBytesDecrypted);
if (cryptStatus == kCCSuccess) {
return [NSData dataWithBytesNoCopy:buffer length:numBytesDecrypted];
}
free(buffer);
return nil;
}
+(NSData *)TripleDES:(NSString *)plainText encryptOrDecrypt:(CCOperation)encryptOrDecrypt encryptOrDecryptKey:(NSString *)encryptOrDecryptKey
{
const void *vplainText;
size_t plainTextBufferSize;
if (encryptOrDecrypt == kCCDecrypt)//解密
{
// NSData *EncryptData = [GTMBase64 decodeData:[plainText dataUsingEncoding:NSUTF8StringEncoding]];
// NSData *EncryptData = [GTMBase64 decodeData:[NSData dataWithHexString:plainText]];
NSData *EncryptData = [NSData dataWithHexString:plainText];
plainTextBufferSize = [EncryptData length];
vplainText = [EncryptData bytes];
}
else //加密
{
NSData* data = [plainText dataUsingEncoding:NSUTF8StringEncoding];
plainTextBufferSize = [data length];
vplainText = (const void *)[data bytes];
}
CCCryptorStatus ccStatus;
uint8_t *bufferPtr = NULL;
size_t bufferPtrSize = 0;
size_t movedBytes = 0;
bufferPtrSize = (plainTextBufferSize + kCCBlockSize3DES) & ~(kCCBlockSize3DES - 1);
bufferPtr = malloc( bufferPtrSize * sizeof(uint8_t));
memset((void *)bufferPtr, 0x0, bufferPtrSize);
// memset((void *) iv, 0x0, (size_t) sizeof(iv));
// NSNEXTSTEPStringEncoding
const void *vkey ;//= (const void *)[encryptOrDecryptKey UTF8String];
vkey = [[NSData dataWithHexString:encryptOrDecryptKey] bytes];
// NSString *initVec = @"init Vec";
//const void *vinitVec = (const void *) [initVec UTF8String];
// Byte iv[] = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};
ccStatus = CCCrypt(encryptOrDecrypt,
kCCAlgorithm3DES,
kCCOptionPKCS7Padding | kCCOptionECBMode,
vkey,
16,
nil,
vplainText,
8,
(void *)bufferPtr,
bufferPtrSize,
&movedBytes);
//if (ccStatus == kCCSuccess) NSLog(@"SUCCESS");
/*else if (ccStatus == kCC ParamError) return @"PARAM ERROR";
else if (ccStatus == kCCBufferTooSmall) return @"BUFFER TOO SMALL";
else if (ccStatus == kCCMemoryFailure) return @"MEMORY FAILURE";
else if (ccStatus == kCCAlignmentError) return @"ALIGNMENT";
else if (ccStatus == kCCDecodeError) return @"DECODE ERROR";
else if (ccStatus == kCCUnimplemented) return @"UNIMPLEMENTED"; */
NSString *result;
NSData *resultData;
if (encryptOrDecrypt == kCCDecrypt)
{
result = [[NSString alloc] initWithData:[NSData dataWithBytes:(const void *)bufferPtr
length:(NSUInteger)movedBytes]
encoding:NSUTF8StringEncoding];
resultData = [NSData dataWithBytes:(const void *)bufferPtr length:(NSUInteger)movedBytes];
NSLog(@"pinkdata ==%@==%@+%d",resultData,result,ccStatus);
}
else
{
resultData = [NSData dataWithBytes:(const void *)bufferPtr length:(NSUInteger)movedBytes];
result = [GTMBase64 stringByEncodingData:resultData];
}
return resultData;
}
+ (NSString *)md5:(NSString *)str
{
const char *cStr = [str UTF8String];
unsigned char result[16];
CC_MD5(cStr, strlen(cStr), result); // This is the md5 call
return [NSString stringWithFormat:
@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
result[0], result[1], result[2], result[3],
result[4], result[5], result[6], result[7],
result[8], result[9], result[10], result[11],
result[12], result[13], result[14], result[15]
];
}
#ifdef iOSLess8_0
-(BOOL)containsString:(NSString *)str
{
NSRange range = [self rangeOfString:str];
if(range.location != NSNotFound) return YES;
return NO;
}
#endif
//邮箱
+ (BOOL) validateEmail:(NSString *)email
{
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
return [emailTest evaluateWithObject:email];
}
//手机号码验证
+ (BOOL) validateMobile:(NSString *)mobile
{
//手机号以13， 15，18开头，八个 \d 数字字符
NSString *phoneRegex = @"^((13[0-9])|(15[^4,\\D])|(18[0,0-9]))\\d{8}$";
NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];
return [phoneTest evaluateWithObject:mobile];
}
//车牌号验证
+ (BOOL) validateCarNo:(NSString *)carNo
{
NSString *carRegex = @"^[\u4e00-\u9fa5]{1}[a-zA-Z]{1}[a-zA-Z_0-9]{4}[a-zA-Z_0-9_\u4e00-\u9fa5]$";
NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",carRegex];
NSLog(@"carTest is %@",carTest);
return [carTest evaluateWithObject:carNo];
}
//车型
+ (BOOL) validateCarType:(NSString *)CarType
{
NSString *CarTypeRegex = @"^[\u4E00-\u9FFF]+$";
NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CarTypeRegex];
return [carTest evaluateWithObject:CarType];
}
//用户名
+ (BOOL) validateUserName:(NSString *)name
{
NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$";
NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];
BOOL B = [userNamePredicate evaluateWithObject:name];
return B;
}
//昵称
+ (BOOL) validateNickname:(NSString *)nickname
{
NSString *nicknameRegex = @"^[\u4e00-\u9fa5]{4,8}$";
NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",nicknameRegex];
return [passWordPredicate evaluateWithObject:nickname];
}
//身份证号
+ (BOOL) validateIdentityCard: (NSString *)identityCard
{
BOOL flag;
if (identityCard.length <= 0) {
flag = NO;
return flag;
}
NSString *regex2 = @"^(\\d{14}|\\d{17})(\\d|[xX])$";
NSPredicate *identityCardPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex2];
return [identityCardPredicate evaluateWithObject:identityCard];
}
@end
