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Replace ChaCha20Poly1305 implementation

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Improve AEAD speed with slightly faster poly1305 implementation.
Avoid memory allocations whenever possible. (AEAD)
But currently missing AVX2 support.

BenchmarkSeal64B-8     1561 ns/op       40.97 MB/s
BenchmarkSeal1K-8      5570 ns/op      183.82 MB/s
BenchmarkSeal64K-8     161271 ns/op    406.37 MB/s
BenchmarkOpen64B-8     1747 ns/op       45.79 MB/s
BenchmarkOpen1K-8      5741 ns/op      181.14 MB/s
BenchmarkOpen64K-8     157116 ns/op    417.22 MB/s
This commit is contained in:
Andreas Auernhammer
2016-07-17 23:23:30 +02:00
parent 0412926b3d
commit c5be7d0d62
1 changed files with 8 additions and 3 deletions
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11
crypto/chacha20poly1305_aead.go
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@@ -5,7 +5,7 @@ import (
"encoding/binary"
"errors"
"github.com/lucas-clemente/chacha20poly1305"
"github.com/aead/chacha20"
"github.com/lucas-clemente/quic-go/protocol"
)
@@ -22,11 +22,16 @@ func NewAEADChacha20Poly1305(otherKey []byte, myKey []byte, otherIV []byte, myIV
if len(myKey) != 32 || len(otherKey) != 32 || len(myIV) != 4 || len(otherIV) != 4 {
return nil, errors.New("chacha20poly1305: expected 32-byte keys and 4-byte IVs")
}
encrypter, err := chacha20poly1305.New(myKey, 12)
// copy because ChaCha20Poly1305 expects array pointers
var MyKey, OtherKey [32]byte
copy(MyKey[:], myKey)
copy(OtherKey[:], otherKey)
encrypter, err := chacha20.NewChaCha20Poly1305WithTagSize(&MyKey, 12)
if err != nil {
return nil, err
}
decrypter, err := chacha20poly1305.New(otherKey, 12)
decrypter, err := chacha20.NewChaCha20Poly1305WithTagSize(&OtherKey, 12)
if err != nil {
return nil, err
}