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// +build !without_openssl
package stupidgcm
// #include <openssl/evp.h>
import "C"
import (
"crypto/cipher"
"log"
)
const (
// BuiltWithoutOpenssl indicates if openssl been disabled at compile-time
BuiltWithoutOpenssl = false
keyLen = 32
ivLen = 16
tagLen = 16
)
type stupidGCM struct {
stupidAEADCommon
}
// NewAES256GCM returns a new AES-256-GCM cipher that satisfies the cipher.AEAD interface.
//
// Only 32-bytes keys and 16-byte IVs are supported.
func NewAES256GCM(keyIn []byte) cipher.AEAD {
if len(keyIn) != keyLen {
log.Panicf("Only %d-byte keys are supported", keyLen)
}
return &stupidGCM{
stupidAEADCommon{
// Create a private copy of the key
key: append([]byte{}, keyIn...),
openSSLEVPCipher: C.EVP_aes_256_gcm(),
nonceSize: ivLen,
},
}
}
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