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IOS 数据加密方式（加盐，MD5加密，）
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加密方式封装
@interface NSString (Hash)@property (readonly) NSString *md5String;
@property (readonly) NSString *sha1String;
@property (readonly) NSString *sha256String;
@property (readonly) NSString *sha512String;- (NSString *)hmacSHA1StringWithKey:(NSString *)key;
- (NSString *)hmacSHA256StringWithKey:(NSString *)key;
- (NSString *)hmacSHA512StringWithKey:(NSString *)key;@end
#import "NSString+hash.h"#import <CommonCrypto/CommonDigest.h>
#import <CommonCrypto/CommonHMAC.h>@implementation NSString (Hash)- (NSString *)md5String
{
const char *string = self.UTF8String;
int length = (int)strlen(string);
unsigned char bytes[CC_MD5_DIGEST_LENGTH];
CC_MD5(string, length, bytes);
return [self stringFromBytes:bytes length:CC_MD5_DIGEST_LENGTH];
}- (NSString *)sha1String
{
const char *string = self.UTF8String;
int length = (int)strlen(string);
unsigned char bytes[CC_SHA1_DIGEST_LENGTH];
CC_SHA1(string, length, bytes);
return [self stringFromBytes:bytes length:CC_SHA1_DIGEST_LENGTH];
}- (NSString *)sha256String
{
const char *string = self.UTF8String;
int length = (int)strlen(string);
unsigned char bytes[CC_SHA256_DIGEST_LENGTH];
CC_SHA256(string, length, bytes);
return [self stringFromBytes:bytes length:CC_SHA256_DIGEST_LENGTH];
}- (NSString *)sha512String
{
const char *string = self.UTF8String;
int length = (int)strlen(string);
unsigned char bytes[CC_SHA512_DIGEST_LENGTH];
CC_SHA512(string, length, bytes);
return [self stringFromBytes:bytes length:CC_SHA512_DIGEST_LENGTH];
}- (NSString *)hmacSHA1StringWithKey:(NSString *)key
{
NSData *keyData = [key dataUsingEncoding:NSUTF8StringEncoding];
NSData *messageData = [self dataUsingEncoding:NSUTF8StringEncoding];
NSMutableData *mutableData = [NSMutableData dataWithLength:CC_SHA1_DIGEST_LENGTH];
CCHmac(kCCHmacAlgSHA1, keyData.bytes, keyData.length, messageData.bytes, messageData.length, mutableData.mutableBytes);
return [self stringFromBytes:(unsigned char *)mutableData.bytes length:mutableData.length];
}- (NSString *)hmacSHA256StringWithKey:(NSString *)key
{
NSData *keyData = [key dataUsingEncoding:NSUTF8StringEncoding];
NSData *messageData = [self dataUsingEncoding:NSUTF8StringEncoding];
NSMutableData *mutableData = [NSMutableData dataWithLength:CC_SHA256_DIGEST_LENGTH];
CCHmac(kCCHmacAlgSHA256, keyData.bytes, keyData.length, messageData.bytes, messageData.length, mutableData.mutableBytes);
return [self stringFromBytes:(unsigned char *)mutableData.bytes length:mutableData.length];
}- (NSString *)hmacSHA512StringWithKey:(NSString *)key
{
NSData *keyData = [key dataUsingEncoding:NSUTF8StringEncoding];
NSData *messageData = [self dataUsingEncoding:NSUTF8StringEncoding];
NSMutableData *mutableData = [NSMutableData dataWithLength:CC_SHA512_DIGEST_LENGTH];
CCHmac(kCCHmacAlgSHA512, keyData.bytes, keyData.length, messageData.bytes, messageData.length, mutableData.mutableBytes);
return [self stringFromBytes:(unsigned char *)mutableData.bytes length:mutableData.length];
}#pragma mark - Helpers- (NSString *)stringFromBytes:(unsigned char *)bytes length:(int)length
{
NSMutableString *mutableString = @"".mutableCopy;
for (int i = ; i < length; i++)
[mutableString appendFormat:@"%02x", bytes[i]];
return [NSString stringWithString:mutableString];
}@end
#import "HMViewController.h"
#import "NSString+Hash.h"#define Salt @"fsdhjkfhjksdhjkfjhkd546783765"@interface HMViewController ()@end@implementation HMViewController- (void)viewDidLoad
{
[super viewDidLoad]; [self digest4:@""]; // [self digest4:@"abc"];
[self digest4:@""];
}/**
* 直接用MD5加密
*/
- (NSString *)digest:(NSString *)str
{
NSString *anwen = [str md5String];
NSLog(@"%@ - %@", str, anwen);
return anwen;
}/**
* 加盐
*/
- (NSString *)digest2:(NSString *)str
{
str = [str stringByAppendingString:Salt]; NSString *anwen = [str md5String];
NSLog(@"%@ - %@", str, anwen);
return anwen;
}/**
* 多次MD5
*/
- (NSString *)digest3:(NSString *)str
{
NSString *anwen = [str md5String]; anwen = [anwen md5String]; NSLog(@"%@ - %@", str, anwen);
return anwen;
}/**
* 先加密, 后乱序
*/
- (NSString *)digest4:(NSString *)str
{
NSString *anwen = [str md5String]; // 注册: 123 ---- 2CB962AC59075B964B07152D234B7020 // 登录: 123 --- 202CB962AC59075B964B07152D234B70 NSString *header = [anwen substringToIndex:];
NSString *footer = [anwen substringFromIndex:]; anwen = [footer stringByAppendingString:header]; NSLog(@"%@ - %@", str, anwen); return anwen;
}@end
