iOS加密解密算法-白红宇

最近项目中对接微软小冰的业务,大厂都对内部的资源有相当的保密措施,对给到第三方的数据都是加密的,下面是应用到的相关的加密解密函数:异或加密解密及base64的加密解密

异或加密算法

static NSString *secretKey =@"XiaoBing_Qitianzhen";/** *  异或加密算法 * *  @param sourceData 需要加密的字节流 *  @param key        加密的key * *  @return 加密后的字节流 */- (NSString *)encryptForPlainText:(NSString *)plainText{    //保存加密后的字符    NSMutableString *encryption=[NSMutableString string];    //编码转换后的字符串 UTF_8->iso-8859-1    NSString *encoding=[[NSString alloc]initWithData:[plainText dataUsingEncoding:NSUTF8StringEncoding] encoding:NSISOLatin1StringEncoding];        for(int i=0,j=0;i

异或解密

- (NSString *)decryptForEncryption:(NSString *)encryption {    //保存解密后的字符    NSMutableString *decryption=[NSMutableString string];    //解码字符    NSString *decoding=nil;        for(int i=0,j=0;i
    
      UTF_8        decoding=[[NSString alloc]initWithData:[[decryption copy] dataUsingEncoding:NSISOLatin1StringEncoding] encoding:NSUTF8StringEncoding];    }    if (decoding==nil) {        decoding=encryption;    }    return decoding;}复制代码

base64的加密解密

//把字符串转成Base64编码- (NSString *)base64EncodeString:(NSString *)string{    NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];        return [data base64EncodedStringWithOptions:0];}//字符串解码- (NSString *)stringEncodeBase64:(NSString *)encodeStr{    NSData *nsdataFromBase64String = [[NSData alloc] initWithBase64EncodedString:encodeStr options:0];        NSString *base64Decoded = [[NSString alloc]initWithData:nsdataFromBase64String encoding:NSUTF8StringEncoding];    return base64Decoded;}复制代码

此文只为记录笔记,以后查阅方便!有哪些写的不对的地方,欢迎指正!!!