MD5

Usage

g++ src_code -o nome_output
./nome_output

Paddings

There are three types of padding (the index can be 0,1 or 2 and it is the parameter of the initializer of the MD5 class).

• 0: complete padding (0x80, zeros and length)
• 1: only 0x80 and zeros (at least one byte of padding is added)
• 2: simple padding: only 0x80 and zeros, but it is not required if the message length is a multiple of 64 bytes (512 bits)

Examples

In the main function there is an example of the usage.

Remark

update(msg1);
update(msg2);

is the same of

update(msg1 + msg2);

meaning that two updates give the same result of a single update with the message composed by the concatenation of the messages.