func cbcEncrypt()

in cipher.go [44:52]

• 9 lines of code
• 1 McCabe index (conditional complexity)

func cbcEncrypt(block cipher.Block, key, iv, plaintext []byte) ([]byte, error) {
	mode := cipher.NewCBCEncrypter(block, iv)
	paddingLen := block.BlockSize() - (len(plaintext) % block.BlockSize())
	ciphertext := make([]byte, len(plaintext)+paddingLen)
	copy(ciphertext, plaintext)
	copy(ciphertext[len(plaintext):], bytes.Repeat([]byte{byte(paddingLen)}, paddingLen))
	mode.CryptBlocks(ciphertext, ciphertext)
	return ciphertext, nil
}