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This commit is contained in:
Nicholas Ward 2022-12-01 21:49:06 -08:00
parent 778aec627b
commit 50ffb9072a
1 changed files with 18 additions and 1 deletions
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19
evm/src/cpu/kernel/asm/hash/blake2b/compression.asm
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@ -5,6 +5,8 @@ global blake2b_compression:
%blake2b_initial_hash_value
compression_loop:
// stack: h_0, ..., h_7, cur_block, retdest
// Store the hash values.
%blake2b_hash_value_addr
// stack: addr, h_0, ..., h_7, cur_block, retdest
%rep 8
@ -13,6 +15,7 @@ compression_loop:
%mstore_kernel_general
%increment
%endrep
// stack: addr, cur_block, retdest
POP
// stack: cur_block, retdest
@ -30,6 +33,8 @@ compression_loop:
PUSH 1
%mload_kernel_general
// stack: num_bytes, cur_block, is_last_block, retdest
// Calculate t counter value.
DUP3
// stack: is_last_block, num_bytes, cur_block, is_last_block, retdest
MUL
@ -54,6 +59,8 @@ compression_loop:
%mul_const(128)
%add_const(2)
// stack: cur_block_start_byte, t, cur_block, is_last_block, retdest
// Copy the message from the input space to the message working space.
%blake2b_message_addr
// stack: message_addr, cur_block_start_byte, t, cur_block, is_last_block, retdest
%rep 16
@ -100,9 +107,11 @@ compression_loop:
// stack: addr, h_0, ..., h_7, invert_if_last_block, t, cur_block, retdest
POP
// stack: h_0, ..., h_7, invert_if_last_block, t, cur_block, retdest
// Store the initial 16 values of the internal state.
%blake2b_internal_state_addr
// stack: start, h_0, ..., h_7, invert_if_last_block, t, cur_block, retdest
// First eight words of compression state: current state h_0, ..., h_7.
// First eight words of internal state: current state h_0, ..., h_7.
%rep 8
SWAP1
DUP2
@ -171,6 +180,8 @@ compression_loop:
// stack: start, cur_block, retdest
PUSH 0
// stack: round=0, start, cur_block, retdest
// Run 12 rounds of G functions.
%rep 12
// stack: round, start, cur_block, retdest
%call_blake2b_g_function(0, 4, 8, 12, 0, 1)
@ -188,6 +199,8 @@ compression_loop:
// stack: 12, start, cur_block, retdest
POP
POP
// Finalize hash value.
// stack: cur_block, retdest
%blake2b_generate_new_hash_value(7)
%blake2b_generate_new_hash_value(6)
@ -217,6 +230,8 @@ compression_end:
// stack: h_0', h_1', h_2', h_3', h_4', h_5', h_6', h_7', cur_block + 1, retdest
PUSH 0
// stack: dummy=0, h_0', h_1', h_2', h_3', h_4', h_5', h_6', h_7', cur_block + 1, retdest
// Invert the bytes of each hash value.
SWAP1
%invert_bytes_blake2b_word
SWAP1
@ -242,6 +257,8 @@ compression_end:
%invert_bytes_blake2b_word
SWAP8
POP
// Combine hash values.
%shl_const(64)
OR
%shl_const(64)