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-rw-r--r--internal/stupidgcm/chacha.go5
1 files changed, 4 insertions, 1 deletions
diff --git a/internal/stupidgcm/chacha.go b/internal/stupidgcm/chacha.go
index c90d721..30d57e3 100644
--- a/internal/stupidgcm/chacha.go
+++ b/internal/stupidgcm/chacha.go
@@ -39,9 +39,12 @@ func NewChacha20poly1305(key []byte) *stupidChacha20poly1305 {
if len(key) != chacha20poly1305.KeySize {
log.Panicf("Only %d-byte keys are supported, you passed %d bytes", chacha20poly1305.KeySize, len(key))
}
+ // private copy
+ key2 := make([]byte, chacha20poly1305.KeySize)
+ copy(key2, key)
return &stupidChacha20poly1305{
stupidAEADCommon{
- key: append([]byte{}, key...), // private copy
+ key: key2,
openSSLEVPCipher: _EVP_chacha20_poly1305,
nonceSize: chacha20poly1305.NonceSize,
},