Major refactoring: Split up "cryptfs" into several internal packages

"git status" for reference:

deleted:    cryptfs/cryptfs.go
deleted:    cryptfs/names_core.go
modified:   integration_tests/cli_test.go
modified:   integration_tests/helpers.go
renamed:    cryptfs/config_file.go -> internal/configfile/config_file.go
renamed:    cryptfs/config_test.go -> internal/configfile/config_test.go
renamed:    cryptfs/config_test/.gitignore -> internal/configfile/config_test/.gitignore
renamed:    cryptfs/config_test/PlaintextNames.conf -> internal/configfile/config_test/PlaintextNames.conf
renamed:    cryptfs/config_test/StrangeFeature.conf -> internal/configfile/config_test/StrangeFeature.conf
renamed:    cryptfs/config_test/v1.conf -> internal/configfile/config_test/v1.conf
renamed:    cryptfs/config_test/v2.conf -> internal/configfile/config_test/v2.conf
renamed:    cryptfs/kdf.go -> internal/configfile/kdf.go
renamed:    cryptfs/kdf_test.go -> internal/configfile/kdf_test.go
renamed:    cryptfs/cryptfs_content.go -> internal/contentenc/content.go
new file:   internal/contentenc/content_api.go
renamed:    cryptfs/content_test.go -> internal/contentenc/content_test.go
renamed:    cryptfs/file_header.go -> internal/contentenc/file_header.go
renamed:    cryptfs/intrablock.go -> internal/contentenc/intrablock.go
renamed:    cryptfs/address_translation.go -> internal/contentenc/offsets.go
new file:   internal/cryptocore/crypto_api.go
renamed:    cryptfs/gcm_go1.4.go -> internal/cryptocore/gcm_go1.4.go
renamed:    cryptfs/gcm_go1.5.go -> internal/cryptocore/gcm_go1.5.go
renamed:    cryptfs/nonce.go -> internal/cryptocore/nonce.go
renamed:    cryptfs/openssl_aead.go -> internal/cryptocore/openssl_aead.go
renamed:    cryptfs/openssl_benchmark.bash -> internal/cryptocore/openssl_benchmark.bash
renamed:    cryptfs/openssl_test.go -> internal/cryptocore/openssl_test.go
new file:   internal/nametransform/name_api.go
new file:   internal/nametransform/names_core.go
renamed:    cryptfs/names_diriv.go -> internal/nametransform/names_diriv.go
renamed:    cryptfs/names_noiv.go -> internal/nametransform/names_noiv.go
renamed:    cryptfs/names_test.go -> internal/nametransform/names_test.go
new file:   internal/nametransform/pad16.go
renamed:    cryptfs/log.go -> internal/toggledlog/log.go
renamed:    cryptfs/log_go1.4.go -> internal/toggledlog/log_go1.4.go
renamed:    cryptfs/log_go1.5.go -> internal/toggledlog/log_go1.5.go
modified:   main.go
modified:   masterkey.go
modified:   pathfs_frontend/file.go
modified:   pathfs_frontend/file_holes.go
modified:   pathfs_frontend/fs.go
modified:   pathfs_frontend/fs_dir.go
modified:   pathfs_frontend/names.go
modified:   test.bash

1 files changed, 0 insertions, 100 deletions

diff --git a/cryptfs/openssl_aead.go b/cryptfs/openssl_aead.go
deleted file mode 100644
index 5d38d38..0000000
--- a/cryptfs/openssl_aead.go
+++ /dev/null
@@ -1,100 +0,0 @@
-package cryptfs
-
-// Implements cipher.AEAD with OpenSSL backend
-
-import (
-	"bytes"
-	"github.com/spacemonkeygo/openssl"
-)
-
-// Supports all nonce sizes
-type opensslGCM struct {
-	key []byte
-}
-
-func (be opensslGCM) Overhead() int {
-	return AUTH_TAG_LEN
-}
-
-func (be opensslGCM) NonceSize() int {
-	// We support any nonce size
-	return -1
-}
-
-// Seal encrypts and authenticates plaintext, authenticates the
-// additional data and appends the result to dst, returning the updated
-// slice. opensslGCM supports any nonce size.
-func (be opensslGCM) Seal(dst, nonce, plaintext, data []byte) []byte {
-
-	// Preallocate output buffer
-	var cipherBuf bytes.Buffer
-	cipherBuf.Grow(len(dst) + len(plaintext) + AUTH_TAG_LEN)
-	// Output will be appended to dst
-	cipherBuf.Write(dst)
-
-	ectx, err := openssl.NewGCMEncryptionCipherCtx(KEY_LEN*8, nil, be.key, nonce)
-	if err != nil {
-		panic(err)
-	}
-	err = ectx.ExtraData(data)
-	if err != nil {
-		panic(err)
-	}
-	part, err := ectx.EncryptUpdate(plaintext)
-	if err != nil {
-		panic(err)
-	}
-	cipherBuf.Write(part)
-	part, err = ectx.EncryptFinal()
-	if err != nil {
-		panic(err)
-	}
-	cipherBuf.Write(part)
-	part, err = ectx.GetTag()
-	if err != nil {
-		panic(err)
-	}
-	cipherBuf.Write(part)
-
-	return cipherBuf.Bytes()
-}
-
-// Open decrypts and authenticates ciphertext, authenticates the
-// additional data and, if successful, appends the resulting plaintext
-// to dst, returning the updated slice. The nonce must be NonceSize()
-// bytes long and both it and the additional data must match the
-// value passed to Seal.
-//
-// The ciphertext and dst may alias exactly or not at all.
-func (be opensslGCM) Open(dst, nonce, ciphertext, data []byte) ([]byte, error) {
-
-	l := len(ciphertext)
-	tag := ciphertext[l-AUTH_TAG_LEN : l]
-	ciphertext = ciphertext[0 : l-AUTH_TAG_LEN]
-	plainBuf := bytes.NewBuffer(dst)
-
-	dctx, err := openssl.NewGCMDecryptionCipherCtx(KEY_LEN*8, nil, be.key, nonce)
-	if err != nil {
-		return nil, err
-	}
-	err = dctx.ExtraData(data)
-	if err != nil {
-		return nil, err
-	}
-	part, err := dctx.DecryptUpdate(ciphertext)
-	if err != nil {
-		return nil, err
-	}
-	plainBuf.Write(part)
-	err = dctx.SetTag(tag)
-	if err != nil {
-		return nil, err
-	}
-	part, err = dctx.DecryptFinal()
-	if err != nil {
-		return nil, err
-	}
-	plainBuf.Write(part)
-
-	return plainBuf.Bytes(), nil
-}