各种常用的加密(MD5,SHA,)

使用之前需要导入:   #import
<CommonCrypto/CommonDigest.h> 

- (IBAction)commonMd5BtnPressed:(id)sender {

    [entryptTypeLabel
setText:@"常规md5加密"];

    

    [introLabel1
setText:@"32位小写"];

    [resultLabel1
setText:[self
getMd5_32Bit_String:srcStringTextField.text]];

   

   
//只需将得到的加密字串转化成大写即可

    [introLabel2
setText:@"32位大写"];

    [resultLabel2
setText:[[self
getMd5_32Bit_String:srcStringTextField.text]
uppercaseString]];

    

    [introLabel3
setText:@"16位小写"];

    [resultLabel3
setText:[self
getMd5_16Bit_String:srcStringTextField.text]];

    

    [introLabel4
setText:@"16位大写"];

    [resultLabel4
setText:[[self
getMd5_16Bit_String:srcStringTextField.text]
uppercaseString]];

    

}

- (IBAction)secondaryMd5BtnPressed:(id)sender {

   
//实际上就是做两次常规转化

    [entryptTypeLabel
setText:@"二次md5加密"];

    

    [introLabel1
setText:@"32位小写"];

    [resultLabel1
setText:[self
getMd5_32Bit_String:[self
getMd5_32Bit_String:srcStringTextField.text]]];

    

   
//只需将得到的加密字串转化成大写即可

    [introLabel2
setText:@"32位大写"];

    [resultLabel2
setText:[[self
getMd5_32Bit_String:[[self
getMd5_32Bit_String:srcStringTextField.text]
uppercaseString]]uppercaseString]];

    

    [introLabel3
setText:@"16位小写"];

    [resultLabel3
setText:[self
getMd5_16Bit_String:[self
getMd5_16Bit_String:srcStringTextField.text]]];

    

    [introLabel4
setText:@"16位大写"];

    [resultLabel4
setText:[[self
getMd5_16Bit_String:[[self
getMd5_16Bit_String:srcStringTextField.text]
uppercaseString]] uppercaseString]];

}

//sha加密

- (IBAction)shaBtnPressed:(id)sender{

    [entryptTypeLabel
setText:@"sha安全哈希加密"];

    

    [introLabel1
setText:@"sha1加密"];

    [resultLabel1
setText:[self
getSha1String:srcStringTextField.text]];

    

    [introLabel2
setText:@"sha256加密"];

    [resultLabel2
setText:[self
getSha256String:srcStringTextField.text]];

    

    [introLabel3
setText:@"sha384加密"];

    [resultLabel3
setText:[self
getSha384String:srcStringTextField.text]];

    

    [introLabel4
setText:@"sha512加密"];

    [resultLabel4
setText:[self
getSha512String:srcStringTextField.text]];

    

}

//16位MD5加密方式

- (NSString *)getMd5_16Bit_String:(NSString *)srcString{

    //提取32位MD5散列的中间16位

    NSString *md5_32Bit_String=[self
getMd5_32Bit_String:srcString];

    NSString *result = [[md5_32Bit_String
substringToIndex:24]
substringFromIndex:8];//即9～25位

 

    return result;

}

//32位MD5加密方式

- (NSString *)getMd5_32Bit_String:(NSString *)srcString{

    const
char *cStr = [srcString UTF8String];

    unsigned
char digest[CC_MD5_DIGEST_LENGTH];

    CC_MD5( cStr,
strlen(cStr), digest );

    NSMutableString *result = [NSMutableString
stringWithCapacity:CC_MD5_DIGEST_LENGTH *
2];

    for(int i =
0; i < CC_MD5_DIGEST_LENGTH; i++)

        [result appendFormat:@"%02x", digest[i]];

    

    return result;

}

//sha1加密方式

- (NSString *)getSha1String:(NSString *)srcString{

    const
char *cstr = [srcString cStringUsingEncoding:NSUTF8StringEncoding];

    NSData *data = [NSData
dataWithBytes:cstr length:srcString.length];

    

    uint8_t digest[CC_SHA1_DIGEST_LENGTH];

    

    CC_SHA1(data.bytes, data.length, digest);

    

    NSMutableString* result = [NSMutableString
stringWithCapacity:CC_SHA1_DIGEST_LENGTH *
2];

    

    for(int i =
0; i < CC_SHA1_DIGEST_LENGTH; i++) {

        [result appendFormat:@"%02x", digest[i]];

    }

    

    return result;

}

//sha256加密方式

- (NSString *)getSha256String:(NSString *)srcString {

    const
char *cstr = [srcString cStringUsingEncoding:NSUTF8StringEncoding];

    NSData *data = [NSData
dataWithBytes:cstr length:srcString.length];

    

    uint8_t digest[CC_SHA256_DIGEST_LENGTH];

    

    CC_SHA1(data.bytes, data.length, digest);

    

    NSMutableString* result = [NSMutableString
stringWithCapacity:CC_SHA256_DIGEST_LENGTH *
2];

    

    for(int i =
0; i < CC_SHA256_DIGEST_LENGTH; i++) {

        [result appendFormat:@"%02x", digest[i]];

    }

    

    return result;

}

//sha384加密方式

- (NSString *)getSha384String:(NSString *)srcString {

    const
char *cstr = [srcString cStringUsingEncoding:NSUTF8StringEncoding];

    NSData *data = [NSData
dataWithBytes:cstr length:srcString.length];

    

    uint8_t digest[CC_SHA384_DIGEST_LENGTH];

    

    CC_SHA1(data.bytes, data.length, digest);

    

    NSMutableString* result = [NSMutableString
stringWithCapacity:CC_SHA384_DIGEST_LENGTH *
2];

    

    for(int i =
0; i < CC_SHA384_DIGEST_LENGTH; i++) {

        [result appendFormat:@"%02x", digest[i]];

    }

    

    return result;

}

//sha512加密方式

- (NSString*) getSha512String:(NSString*)srcString {

    const
char *cstr = [srcString cStringUsingEncoding:NSUTF8StringEncoding];

    NSData *data = [NSData
dataWithBytes:cstr length:srcString.length];

    uint8_t digest[CC_SHA512_DIGEST_LENGTH];

    

    CC_SHA512(data.bytes, data.length, digest);

    

    NSMutableString* result = [NSMutableString
stringWithCapacity:CC_SHA512_DIGEST_LENGTH *
2];

    for(int i =
0; i < CC_SHA512_DIGEST_LENGTH; i++)

        [result appendFormat:@"%02x", digest[i]];

    return result;

}