dst[:BlockSize] src = src[BlockSize:] dst = dst[BlockSize:] } // Save the iv for the next CryptBlocks call. copy(civ[:], iv) } type CBCDecrypter struct { b Block iv [BlockSize]byte } // NewCBCDecrypter returns a [cipher.BlockMode] which decrypts in cipher block // chaining mode, using the given Block. func NewCBCDecrypter(b *Block, iv [BlockSize]byte) *CBCDecrypter { return &CBCDecrypter{b: *b, iv: iv} } func (c *CBCDecrypter) BlockSize() int { return BlockSize } func (c *CBCDecrypter) CryptBlocks(dst,...