The Cemetery Language
What is it?
The idea is to have a yacc-like tool to generate cryptographic algorithms from a language on which it's easy to think about them. Handling the buffers when writing a cryptographic algorithm in C is very cumbersome, even if the algorithm is a very simple one.
Cemetery tries to be a solution to that problem by allowing you to write the algorithms in a clear language, which can then be compiled to C code.
Example:
Cemetery source:
static fun pad(m : bits) : bits
var l = length(m)
var k = (447 - l) % 512
var r : bits
r = m ||| <1 :: 1> ||| <0 :: k> ||| tobits(l, 64)
return r
Output C code:
static cmt_bits_t pad(cmt_bits_t m)
{
int l, k;
cmt_bits_t r, t0, t1, t2, t3, t4, t5;
l = cmt_length(m);
k = __cmt_mod(447 - l, 512);
t0 = __cmt_init(&__cmt_buf_literal_0, 1);
t1 = __cmt_bconcat(m, t0);
cmt_free(t0);
t2 = __cmt_zero(k);
t3 = __cmt_bconcat(t1, t2);
cmt_free(t1);
cmt_free(t2);
t4 = __cmt_tobits(l, 64);
t5 = __cmt_bconcat(t3, t4);
cmt_free(t3);
cmt_free(t4);
r = t5;
return r;
}