Function testEncryptDecrypt

backend/crypt/cipher_test.go:1080–1101

Test encrypt decrypt with different buffer sizes

(t *testing.T, bufSize int, copySize int64)

// Test encrypt decrypt with different buffer sizes
func testEncryptDecrypt(t *testing.T, bufSize int, copySize int64) {
	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
	assert.NoError(t, err)
	c.cryptoRand = &zeroes{} // zero out the nonce
	buf := make([]byte, bufSize)
	source := newRandomSource(copySize)
	encrypted, err := c.newEncrypter(source, nil)
	assert.NoError(t, err)
	decrypted, err := c.newDecrypter(io.NopCloser(encrypted))
	assert.NoError(t, err)
	sink := newRandomSource(copySize)
	n, err := io.CopyBuffer(sink, decrypted, buf)
	assert.NoError(t, err)
	assert.Equal(t, copySize, n)
	blocks := copySize / blockSize
	if (copySize % blockSize) != 0 {
		blocks++
	}
	var expectedNonce = nonce{byte(blocks), byte(blocks >> 8), byte(blocks >> 16), byte(blocks >> 32)}
	assert.Equal(t, expectedNonce, encrypted.nonce)
	assert.Equal(t, expectedNonce, decrypted.nonce)
}

func TestEncryptDecrypt1(t *testing.T) {
	testEncryptDecrypt(t, 1, 1e7)