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//go:build !without_aegis && cgo
// +build !without_aegis,cgo
package stupidgcm
import (
"crypto/cipher"
"log"
"github.com/aegis-aead/go-libaegis/aegis128x2"
"github.com/aegis-aead/go-libaegis/common"
)
const (
// BuiltWithoutAegis indicates if aegis been disabled at compile-time
BuiltWithoutAegis = !common.Available
// Aegis supports 16 and 32 bit tags
AegisTagLen = 16
)
type stupidAegis struct {
aead cipher.AEAD
}
// Verify that we satisfy the cipher.AEAD interface
var _ cipher.AEAD = &stupidAegis{}
func (*stupidAegis) NonceSize() int {
return aegis128x2.NonceSize
}
func (*stupidAegis) Overhead() int {
return AegisTagLen
}
func NewAegis(key []byte) cipher.AEAD {
aead, err := aegis128x2.New(key, AegisTagLen)
if err != nil {
log.Panic(err)
}
return &stupidAegis{
aead: aead,
}
}
func (x *stupidAegis) Seal(dst, nonce, plaintext, additionalData []byte) []byte {
return x.aead.Seal(dst, nonce, plaintext, additionalData)
}
func (x *stupidAegis) Open(dst, nonce, ciphertext, additionalData []byte) ([]byte, error) {
return x.aead.Open(dst, nonce, ciphertext, additionalData)
}
func (x *stupidAegis) Wipe() {
x.aead.(*aegis128x2.Aegis128X2).Wipe()
}
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