diff options
Diffstat (limited to 'internal/contentenc')
-rw-r--r-- | internal/contentenc/content.go | 33 | ||||
-rw-r--r-- | internal/contentenc/content_api.go | 35 |
2 files changed, 33 insertions, 35 deletions
diff --git a/internal/contentenc/content.go b/internal/contentenc/content.go index 5bac2a2..2298c5e 100644 --- a/internal/contentenc/content.go +++ b/internal/contentenc/content.go @@ -8,9 +8,42 @@ import ( "encoding/hex" "errors" + "github.com/rfjakob/gocryptfs/internal/cryptocore" "github.com/rfjakob/gocryptfs/internal/tlog" ) +const ( + // Default plaintext block size + DefaultBS = 4096 +) + +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 +} + // DecryptBlocks - Decrypt a number of blocks func (be *ContentEnc) DecryptBlocks(ciphertext []byte, firstBlockNo uint64, fileId []byte) ([]byte, error) { cBuf := bytes.NewBuffer(ciphertext) diff --git a/internal/contentenc/content_api.go b/internal/contentenc/content_api.go deleted file mode 100644 index cf482b6..0000000 --- a/internal/contentenc/content_api.go +++ /dev/null @@ -1,35 +0,0 @@ -package contentenc - -import "github.com/rfjakob/gocryptfs/internal/cryptocore" - -const ( - // Default plaintext block size - DefaultBS = 4096 -) - -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 -} |