oc客服端向服务端传输数据的加密
来源：互联网 发布：网络艺术研究 编辑：程序博客网 时间：2024/05/27 12:21
1.加密解码代码
//获取加密的字符串+ (NSString *)getJiamiString:(NSDictionary *)dic{ //Token_Psd 密码 NSString *token_psd = [AppTool getMD5:Token_Psd]; NSString *prmStr = [AppTool dictionaryToString:dic]; NSString *prmPsdStr = [CommonFunc base64StringFromText:prmStr]; NSMutableArray *arr = [NSMutableArray array]; long index = 0; for (int i = 0; i<prmPsdStr.length; i++) { if (i > token_psd.length - 1) { index = token_psd.length - 1; }else{ index = i; } char c1 = [token_psd characterAtIndex:index]; char c2 = [prmPsdStr characterAtIndex:i]; long c = c1 + c2; // NSLog(@"%c%c %ld",c1,c2,c); [arr addObject:[NSString stringWithFormat:@"%ld",c]]; } NSString *arrStr = [AppTool arrayToString:arr]; NSString *endStr = [CommonFunc base64StringFromText:arrStr]; return endStr;}//获取解密的字典+ (NSDictionary *)getJieMiDicFromStr:(NSString *)string64{ NSString *token_psd = [AppTool getMD5:Token_Psd]; NSString *strText = [CommonFunc textFromBase64String:string64]; NSArray *arr = [AppTool stringToDictionary:strText]; long index = 0; NSMutableArray *mutArr = [NSMutableArray array]; for (int i = 0; i<arr.count; i++) { if (i > token_psd.length - 1) { index = token_psd.length - 1; }else{ index = i; } char c1 = [token_psd characterAtIndex:index]; NSString *str = [NSString stringWithFormat:@"%@",arr[i]]; NSInteger c2 = [str integerValue]; long c = c2 - c1; //NSLog(@"%ld",c); // NSLog(@"%c%c %ld",c1,c2,c); [mutArr addObject:[NSString stringWithFormat:@"%c",c]]; } NSString *endStr = [AppTool arrayToStringEmpty:mutArr]; // NSLog(@"%@",endStr); NSString *str = [CommonFunc textFromBase64String:endStr]; NSDictionary *dic = [AppTool stringToDictionaryEnd:str]; return dic;}//字符串转字典+ (NSDictionary *)stringToDictionaryEnd:(NSString *)str{ NSError *error; NSData *resData = [[NSData alloc] initWithData:[str dataUsingEncoding:NSUTF8StringEncoding]]; NSDictionary *resultDic = [NSJSONSerialization JSONObjectWithData:resData options:NSJSONReadingMutableLeaves error:nil]; //解析 return resultDic;}//字典转字符串+ (NSString *)dictionaryToString:(id)dic{ NSError *parseError = nil; NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&parseError]; return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];}//字符串转字典+ (id *)stringToDictionary:(NSString *)str{ NSError *error; NSData *resData = [[NSData alloc] initWithData:[str dataUsingEncoding:NSUTF8StringEncoding]]; id resultDic = [NSJSONSerialization JSONObjectWithData:resData options:NSJSONReadingMutableLeaves error:nil]; //解析 return resultDic;}//数组转字符串+ (NSString *)arrayToString:(NSArray *)arr{ NSString *string = [arr componentsJoinedByString:@","]; NSString *str = [NSString stringWithFormat:@"[%@]",string]; return str;}//数组转字符串 “”+ (NSString *)arrayToStringEmpty:(NSArray *)arr{ NSString *string = [arr componentsJoinedByString:@""]; NSString *str = [NSString stringWithFormat:@"%@",string]; return str;}CommonFunc.h
//// CommonFunc.h// PRJ_base64//// Created by wangzhipeng on 12-11-29.// Copyright (c) 2012年 com.comsoft. All rights reserved.//#import <Foundation/Foundation.h>#define __BASE64( text ) [CommonFunc base64StringFromText:text]#define __TEXT( base64 ) [CommonFunc textFromBase64String:base64]@interface CommonFunc : NSObject/****************************************************************************** 函数名称 : + (NSString *)base64StringFromText:(NSString *)text 函数描述 : 将文本转换为base64格式字符串 输入参数 : (NSString *)text 文本 输出参数 : N/A 返回参数 : (NSString *) base64格式字符串 备注信息 : ******************************************************************************/+ (NSString *)base64StringFromText:(NSString *)text;/****************************************************************************** 函数名称 : + (NSString *)textFromBase64String:(NSString *)base64 函数描述 : 将base64格式字符串转换为文本 输入参数 : (NSString *)base64 base64格式字符串 输出参数 : N/A 返回参数 : (NSString *) 文本 备注信息 : ******************************************************************************/+ (NSString *)textFromBase64String:(NSString *)base64;@endCommonFunc.m
//// CommonFunc.m// PRJ_base64//// Created by wangzhipeng on 12-11-29.// Copyright (c) 2012年 com.comsoft. All rights reserved.//#import "CommonFunc.h"//引入IOS自带密码库#import <CommonCrypto/CommonCryptor.h>//空字符串#define LocalStr_None @""static const char encodingTable[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";@implementation CommonFunc+ (NSString *)base64StringFromText:(NSString *)text{ if (text && ![text isEqualToString:LocalStr_None]) { //取项目的bundleIdentifier作为KEY 改动了此处 //NSString *key = [[NSBundle mainBundle] bundleIdentifier]; NSData *data = [text dataUsingEncoding:NSUTF8StringEncoding]; //IOS 自带DES加密 Begin 改动了此处 //data = [self DESEncrypt:data WithKey:key]; //IOS 自带DES加密 End return [self base64EncodedStringFrom:data]; } else { return LocalStr_None; }}+ (NSString *)textFromBase64String:(NSString *)base64{ if (base64 && ![base64 isEqualToString:LocalStr_None]) { //取项目的bundleIdentifier作为KEY 改动了此处 //NSString *key = [[NSBundle mainBundle] bundleIdentifier]; NSData *data = [self dataWithBase64EncodedString:base64]; //IOS 自带DES解密 Begin 改动了此处 //data = [self DESDecrypt:data WithKey:key]; //IOS 自带DES加密 End return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; } else { return LocalStr_None; }}/****************************************************************************** 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]; NSUInteger dataLength = [data length]; size_t bufferSize = dataLength + kCCBlockSizeAES128; void *buffer = malloc(bufferSize); size_t numBytesEncrypted = 0; CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmDES, kCCOptionPKCS7Padding | kCCOptionECBMode, keyPtr, kCCBlockSizeDES, NULL, [data bytes], dataLength, buffer, bufferSize, &numBytesEncrypted); if (cryptStatus == kCCSuccess) { return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted]; } 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;}/****************************************************************************** 函数名称 : + (NSData *)dataWithBase64EncodedString:(NSString *)string 函数描述 : base64格式字符串转换为文本数据 输入参数 : (NSString *)string 输出参数 : N/A 返回参数 : (NSData *) 备注信息 : ******************************************************************************/+ (NSData *)dataWithBase64EncodedString:(NSString *)string{ if (string == nil) [NSException raise:NSInvalidArgumentException format:nil]; if ([string length] == 0) return [NSData data]; static char *decodingTable = NULL; if (decodingTable == NULL) { decodingTable = malloc(256); if (decodingTable == NULL) return nil; memset(decodingTable, CHAR_MAX, 256); NSUInteger i; for (i = 0; i < 64; i++) decodingTable[(short)encodingTable[i]] = i; } const char *characters = [string cStringUsingEncoding:NSASCIIStringEncoding]; if (characters == NULL) // Not an ASCII string! return nil; char *bytes = malloc((([string length] + 3) / 4) * 3); if (bytes == NULL) return nil; NSUInteger length = 0; NSUInteger i = 0; while (YES) { char buffer[4]; short bufferLength; for (bufferLength = 0; bufferLength < 4; i++) { if (characters[i] == '\0') break; if (isspace(characters[i]) || characters[i] == '=') continue; buffer[bufferLength] = decodingTable[(short)characters[i]]; if (buffer[bufferLength++] == CHAR_MAX) // Illegal character! { free(bytes); return nil; } } if (bufferLength == 0) break; if (bufferLength == 1) // At least two characters are needed to produce one byte! { free(bytes); return nil; } // Decode the characters in the buffer to bytes. bytes[length++] = (buffer[0] << 2) | (buffer[1] >> 4); if (bufferLength > 2) bytes[length++] = (buffer[1] << 4) | (buffer[2] >> 2); if (bufferLength > 3) bytes[length++] = (buffer[2] << 6) | buffer[3]; } bytes = realloc(bytes, length); return [NSData dataWithBytesNoCopy:bytes length:length];}/****************************************************************************** 函数名称 : + (NSString *)base64EncodedStringFrom:(NSData *)data 函数描述 : 文本数据转换为base64格式字符串 输入参数 : (NSData *)data 输出参数 : N/A 返回参数 : (NSString *) 备注信息 : ******************************************************************************/+ (NSString *)base64EncodedStringFrom:(NSData *)data{ if ([data length] == 0) return @""; char *characters = malloc((([data length] + 2) / 3) * 4); if (characters == NULL) return nil; NSUInteger length = 0; NSUInteger i = 0; while (i < [data length]) { char buffer[3] = {0,0,0}; short bufferLength = 0; while (bufferLength < 3 && i < [data length]) buffer[bufferLength++] = ((char *)[data bytes])[i++]; // Encode the bytes in the buffer to four characters, including padding "=" characters if necessary. characters[length++] = encodingTable[(buffer[0] & 0xFC) >> 2]; characters[length++] = encodingTable[((buffer[0] & 0x03) << 4) | ((buffer[1] & 0xF0) >> 4)]; if (bufferLength > 1) characters[length++] = encodingTable[((buffer[1] & 0x0F) << 2) | ((buffer[2] & 0xC0) >> 6)]; else characters[length++] = '='; if (bufferLength > 2) characters[length++] = encodingTable[buffer[2] & 0x3F]; else characters[length++] = '='; } return [[NSString alloc] initWithBytesNoCopy:characters length:length encoding:NSASCIIStringEncoding freeWhenDone:YES];}@end 0 0
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