演示樣例項目下載地址 ?https://github.com/cerastes/Encryption

1MD5

創建MD5類

#import <Foundation/Foundation.h>@interface CJMD5 : NSObject +(NSString *)md5HexDigest:(NSString *)input; @end
#import "CJMD5.h" #import <CommonCrypto/CommonDigest.h>@implementation CJMD5 +(NSString *)md5HexDigest:(NSString *)input{const char* str = [input UTF8String];unsigned char result[CC_MD5_DIGEST_LENGTH];CC_MD5(str, strlen(str), result);NSMutableString *ret = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH];for(int i = 0; i<CC_MD5_DIGEST_LENGTH; i++) {[ret appendFormat:@"%02X",result];}return ret; } @end
MD5是不可逆的僅僅有加密沒有解密使用方式例如以下

NSString *userName = @"cerastes"; NSString *password = @"hello Word"; // MD5加密 NSString *md5 = [CJMD5 md5HexDigest:password]; NSLog(@"%@",md5);
2AES加密

AES加密開源碼git下載地址

https://github.com/Gurpartap/AESCrypt-ObjC

用法

// AES加密NSString *encryptedData = [AESCrypt encrypt:userName password:password];//加密NSString *message = [AESCrypt decrypt:encryptedData password:password]; //解密NSLog(@"加密結果 = %@",encryptedData);NSLog(@"解密結果 = %@",message);
3 BASE64加密

下載地址?https://code.google.com/p/google-toolbox-for-mac/source/browse/trunk/Foundation/?r=87

?加入例如以下方法

.h

+ (NSString*)encodeBase64String:(NSString *)input; + (NSString*)decodeBase64String:(NSString *)input; + (NSString*)encodeBase64Data:(NSData *)data; + (NSString*)decodeBase64Data:(NSData *)data;
.m

+ (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; }
用法

// BASE64加密NSString *baseEncodeString = [GTMBase64 encodeBase64String:password];NSString *baseDecodeString = [GTMBase64 decodeBase64String:baseEncodeString];NSLog(@"baseEncodeString = %@",baseEncodeString);NSLog(@"baseDecodeString = %@",baseDecodeString);

轉載于:https://www.cnblogs.com/mfrbuaa/p/3890328.html

總結

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