#pragma mark -从字符串中取字节数组
-(NSData*)stringToByte:(NSString*)string{
NSString *hexString=[[string uppercaseString] stringByReplacingOccurrencesOfString:@" " withString:@""];
if ([hexString length]%2!=0) {
return nil;
}
Byte tempbyt[1]={0};
NSMutableData* bytes=[NSMutableData data];
for(int i=0;i<[hexString length];i++){
unichar hex_char1 = [hexString characterAtIndex:i]; ////两位16进制数中的第一位(高位*16)
int int_ch1;
if(hex_char1 >= '0' && hex_char1 <='9')
int_ch1 = (hex_char1-48)*16; //// 0 的Ascll - 48
else if(hex_char1 >= 'A' && hex_char1 <='F')
int_ch1 = (hex_char1-55)*16; //// A 的Ascll - 65
else
return nil;
i++;
unichar hex_char2 = [hexString characterAtIndex:i]; ///两位16进制数中的第二位(低位)
int int_ch2;
if(hex_char2 >= '0' && hex_char2 <='9')
int_ch2 = (hex_char2-48); //// 0 的Ascll - 48
else if(hex_char2 >= 'A' && hex_char2 <='F')
int_ch2 = hex_char2-55; //// A 的Ascll - 65
else
return nil;
tempbyt[0] = int_ch1+int_ch2; ///将转化后的数放入Byte数组里
[bytes appendBytes:tempbyt length:1];
}
return bytes;
}
#pragma mark - 十六进制转化为Byte数组
- (NSData *)pppp:(NSString *)str{
NSString *hexString = str; //16进制字符串
int j=0;
Byte bytes[1024];
///3ds key的Byte 数组， 128位
for(int i=0;i<[hexString length];i++){
int int_ch; /// 两位16进制数转化后的10进制数
unichar hex_char1 = [hexString characterAtIndex:i]; ////两位16进制数中的第一位(高位*16)
int int_ch1;
if(hex_char1 >= '0' && hex_char1 <='9')
int_ch1 = (hex_char1-48)*16; //// 0 的Ascll - 48
else if(hex_char1 >= 'A' && hex_char1 <='F')
int_ch1 = (hex_char1-55)*16; //// A 的Ascll - 65
else
int_ch1 = (hex_char1-87)*16; //// a 的Ascll - 97
i++;
unichar hex_char2 = [hexString characterAtIndex:i]; ///两位16进制数中的第二位(低位)
int int_ch2;
if(hex_char2 >= '0' && hex_char2 <='9')
int_ch2 = (hex_char2-48); //// 0 的Ascll - 48
else if(hex_char1 >= 'A' && hex_char1 <='F')
int_ch2 = hex_char2-55; //// A 的Ascll - 65
else
int_ch2 = hex_char2-87; //// a 的Ascll - 97
int_ch = int_ch1+int_ch2;
NSLog(@"int_ch=%d",int_ch);
bytes[j] = int_ch; ///将转化后的数放入Byte数组里
j++;
}
NSData *newData = [[NSData alloc] initWithBytes:bytes length:128];
NSLog(@"newData=%@",newData);
return newData;
}
#pragma mark - ASCll转十六进制
- (Byte)ASCLL_HEX:(unsigned char)aHex{
if((aHex>=0)&&(aHex<=9))
aHex += 0x30;
else if((aHex>=10)&&(aHex<=15))//A-F
aHex += 0x37;
else aHex = 0xff;
return aHex;
}
#pragma mark - 十进制转化为十六进制
- (NSString *)ToHex:(uint16_t)tmpid{
NSString *nLetterValue;
NSString *str =@"";
uint16_t ttmpig;
for (int i = 0; i<9; i++) {
ttmpig=tmpid%16;
tmpid=tmpid/16;
switch (ttmpig){
case 10:
nLetterValue =@"A";break;
case 11:
nLetterValue =@"B";break;
case 12:
nLetterValue =@"C";break;
case 13:
nLetterValue =@"D";break;
case 14:
nLetterValue =@"E";break;
case 15:
nLetterValue =@"F";break;
default:
nLetterValue = [NSString stringWithFormat:@"%u",ttmpig];
}str = [nLetterValue stringByAppendingString:str];
if (tmpid == 0) {
break;
}
}return str;
}
#pragma mark - 16进制转10进制
+ (NSNumber *) numberHexString:(NSString *)aHexString{
if (nil == aHexString){
return nil;
}
NSScanner * scanner = [NSScanner scannerWithString:aHexString];
unsigned long long longlongValue;
[scanner scanHexLongLong:&longlongValue];
//将整数转换为NSNumber,存储到数组中,并返回.
NSNumber * hexNumber = [NSNumber numberWithLongLong:longlongValue];
return hexNumber;
}
#pragma mark - 字符串转十六进制
+ (NSString *) stringToHex:(NSString *)str{
NSUInteger len = [str length];
unichar *chars = malloc(len * sizeof(unichar));
[str getCharacters:chars];
NSMutableString *hexString = [[NSMutableString alloc] init];
for(NSUInteger i = 0; i < len; i++ ){
[hexString appendString:[NSString stringWithFormat:@"%x", chars[i]]];
}free(chars);
return hexString;
}
#pragma mark - 字符串转十六进制
+ (NSString *)convertStringToHexStr:(NSString *)str {
if (!str || [str length] == 0) {
return @"";
}
NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];
NSMutableString *string = [[NSMutableString alloc] initWithCapacity:[data length]];
[data enumerateByteRangesUsingBlock:^(const void *bytes, NSRange byteRange, BOOL *stop) {
unsigned char *dataBytes = (unsigned char*)bytes;
for (NSInteger i = 0; i < byteRange.length; i++) {
NSString *hexStr = [NSString stringWithFormat:@"%x", (dataBytes[i]) & 0xff];
if ([hexStr length] == 2) {
[string appendString:hexStr];
} else {
[string appendFormat:@"0%@", hexStr];
}
}
}];return string;
}
#pragma mark 字符串转十六进制
+ (NSString *)hexStringFromString:(NSString *)string{
NSData *myD = [string dataUsingEncoding:NSUTF8StringEncoding];
Byte *bytes = (Byte *)[myD bytes];
//下面是Byte 转换为16进制。
NSString *hexStr=@"";
for(int i=0;i<[myD length];i++){
NSString *newHexStr = [NSString stringWithFormat:@"%x",bytes[i]&0xff];///16进制数
if([newHexStr length]==1)
hexStr = [NSString stringWithFormat:@"%@0%@",hexStr,newHexStr];
else
hexStr = [NSString stringWithFormat:@"%@%@",hexStr,newHexStr];
}return hexStr;
}