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core/crypto/chacha20poly1305: Cleanups

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- Use `encoding/endian`
This commit is contained in:
Yawning Angel
2023-11-14 15:50:36 +09:00
parent fa1cb28c8f
commit aa5a95a4d1
1 changed files with 5 additions and 5 deletions
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10
core/crypto/chacha20poly1305/chacha20poly1305.odin
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@@ -3,7 +3,7 @@ package chacha20poly1305
import "core:crypto"
import "core:crypto/chacha20"
import "core:crypto/poly1305"
import "core:crypto/util"
import "core:encoding/endian"
import "core:mem"
KEY_SIZE :: chacha20.KEY_SIZE
@@ -87,8 +87,8 @@ encrypt :: proc (ciphertext, tag, key, nonce, aad, plaintext: []byte) {
// mac_data |= num_to_8_le_bytes(aad.length)
// mac_data |= num_to_8_le_bytes(ciphertext.length)
l_buf := otk[0:16] // Reuse the scratch buffer.
util.PUT_U64_LE(l_buf[0:8], u64(aad_len))
util.PUT_U64_LE(l_buf[8:16], u64(ciphertext_len))
endian.unchecked_put_u64le(l_buf[0:8], u64(aad_len))
endian.unchecked_put_u64le(l_buf[8:16], u64(ciphertext_len))
poly1305.update(&mac_ctx, l_buf)
// tag = poly1305_mac(mac_data, otk)
@@ -128,8 +128,8 @@ decrypt :: proc (plaintext, tag, key, nonce, aad, ciphertext: []byte) -> bool {
poly1305.update(&mac_ctx, ciphertext)
_update_mac_pad16(&mac_ctx, ciphertext_len)
l_buf := otk[0:16] // Reuse the scratch buffer.
util.PUT_U64_LE(l_buf[0:8], u64(aad_len))
util.PUT_U64_LE(l_buf[8:16], u64(ciphertext_len))
endian.unchecked_put_u64le(l_buf[0:8], u64(aad_len))
endian.unchecked_put_u64le(l_buf[8:16], u64(ciphertext_len))
poly1305.update(&mac_ctx, l_buf)
// tag = poly1305_mac(mac_data, otk)