如何把MD5Digest转成字符串 ( 积分: 5 )

我有一个MD5加密函数,定义是这样的,不知道如何得到转换后的字符串
function MD5String(M: string): MD5Digest;

定义如下
type
MD5Count = array[0..1] of DWORD;
MD5State = array[0..3] of DWORD;
MD5Block = array[0..15] of DWORD;
MD5CBits = array[0..7] of byte;
MD5Digest = array[0..15] of byte;
MD5Buffer = array[0..63] of byte;
MD5Context = record
State: MD5State;
Count: MD5Count;
Buffer: MD5Buffer;
end;

edit1.text:= MD5pring(MD5String('abcgdd'));

接受答案了.