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core/crypto/poly1305: Cleanups

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- Use `encoding/endian`
This commit is contained in:
Yawning Angel
2023-11-17 16:53:29 +09:00
parent aa5a95a4d1
commit 1279ebe948
2 changed files with 24 additions and 37 deletions
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core/crypto/poly1305/poly1305.odin
+4 -4
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@@ -1,8 +1,8 @@
package poly1305
import "core:crypto"
import "core:crypto/util"
import field "core:crypto/_fiat/field_poly1305"
import "core:encoding/endian"
import "core:mem"
KEY_SIZE :: 32
@@ -52,8 +52,8 @@ init :: proc (ctx: ^Context, key: []byte) {
// r = le_bytes_to_num(key[0..15])
// r = clamp(r) (r &= 0xffffffc0ffffffc0ffffffc0fffffff)
tmp_lo := util.U64_LE(key[0:8]) & 0x0ffffffc0fffffff
tmp_hi := util.U64_LE(key[8:16]) & 0xffffffc0ffffffc
tmp_lo := endian.unchecked_get_u64le(key[0:]) & 0x0ffffffc0fffffff
tmp_hi := endian.unchecked_get_u64le(key[8:]) & 0xffffffc0ffffffc
field.fe_from_u64s(&ctx._r, tmp_lo, tmp_hi)
// s = le_bytes_to_num(key[16..31])
@@ -151,7 +151,7 @@ _blocks :: proc (ctx: ^Context, msg: []byte, final := false) {
data_len := len(data)
for data_len >= _BLOCK_SIZE {
// n = le_bytes_to_num(msg[((i-1)*16)..*i*16] | [0x01])
field.fe_from_bytes(&n, data[:_BLOCK_SIZE], final_byte, false)
field.fe_from_bytes(&n, data[:_BLOCK_SIZE], final_byte)
// a += n
field.fe_add(field.fe_relax_cast(&ctx._a), &ctx._a, &n) // _a unreduced