我正在尝试计算info_hash
种子的价值。我将整个洪流读入StringBuffer
,然后将其剪切如下:
d8:announce...info[d6:length...e]e
我似乎无法获得正确的哈希值。将洪流读入StringBuffer
最后会损坏字节字符串吗?我错过了什么吗?
public void calculateInfoHash( ){
try{
int index = rawData.indexOf("4:info") + 6;
int end = rawData.length() - 1;
String info = rawData.substring( index , end );
MessageDigest md = MessageDigest.getInstance( "SHA" );
md.update( info.getBytes() );
byte[] digest = md.digest();
for ( byte b : digest ) {
// print byte as 2 hex digits with lead 0.
//Separate pairs of digits with space
//System.out.print( "%" );
System.out.printf( "%02X", b & 0xff );
}
System.out.println( );
}catch( Exception e ) {
System.out.println( e.toString() );
}
}