buffer overlap") } fips140.RecordApproved() if len(src) == 0 { return } cryptBlocksDec(&c.b, &c.iv, dst, src) } func (x *CBCDecrypter) SetIV(iv []byte) { if len(iv) != len(x.iv) { panic("cipher: incorrect length IV") } copy(x.iv[:], iv) } func cryptBlocksDecGeneri(b *Block, civ *[BlockSize]byte, dst, src []byte) { // For each block, we need to xor the decrypted data with the previous // block's ciphertext (the iv). To avoid making a copy each time, we loop // over the blocks backwards. end := len(src)...