package contentenc import "github.com/rfjakob/gocryptfs/internal/cryptocore" type ContentEnc struct { // Cryptographic primitives cryptoCore *cryptocore.CryptoCore // Plaintext block size plainBS uint64 // Ciphertext block size cipherBS uint64 // All-zero block of size cipherBS, for fast compares allZeroBlock []byte } func New(cc *cryptocore.CryptoCore, plainBS uint64) *ContentEnc { cipherBS := plainBS + uint64(cc.IVLen) + cryptocore.AuthTagLen return &ContentEnc{ cryptoCore: cc, plainBS: plainBS, cipherBS: cipherBS, allZeroBlock: make([]byte, cipherBS), } } func (be *ContentEnc) PlainBS() uint64 { return be.plainBS }