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Add cryptcheck command to check integrity of crypt remotes #1102

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This commit is contained in:
Nick Craig-Wood
2017-02-12 16:30:18 +00:00
parent 186aedda98
commit 01c747e7db
6 changed files with 197 additions and 15 deletions
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14
crypt/cipher.go
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@ -416,7 +416,7 @@ type encrypter struct {
}
// newEncrypter creates a new file handle encrypting on the fly
func (c *cipher) newEncrypter(in io.Reader) (*encrypter, error) {
func (c *cipher) newEncrypter(in io.Reader, nonce *nonce) (*encrypter, error) {
fh := &encrypter{
in: in,
c: c,
@ -425,9 +425,13 @@ func (c *cipher) newEncrypter(in io.Reader) (*encrypter, error) {
bufSize: fileHeaderSize,
}
// Initialise nonce
err := fh.nonce.fromReader(c.cryptoRand)
if err != nil {
return nil, err
if nonce != nil {
fh.nonce = *nonce
} else {
err := fh.nonce.fromReader(c.cryptoRand)
if err != nil {
return nil, err
}
}
// Copy magic into buffer
copy(fh.buf, fileMagicBytes)
@ -485,7 +489,7 @@ func (fh *encrypter) finish(err error) (int, error) {
// Encrypt data encrypts the data stream
func (c *cipher) EncryptData(in io.Reader) (io.Reader, error) {
out, err := c.newEncrypter(in)
out, err := c.newEncrypter(in, nil)
if err != nil {
return nil, err
}