c.storage[:len(key)] copy(c.key, key) return c } // BlockFunction returns the function code for the block cipher. // It is used by the GCM implementation to invoke the KMA instruction. func BlockFunction(c *Block) int { return int(c.function) } // BlockKey returns the key for the block cipher. // It is used by the GCM implementation to invoke the KMA instruction. func BlockKey(c *Block) []byte { return c.key } func encryptBlock(c *Block, dst, src []byte) { if c.fallback != nil { encryptBlockGeneric(c.fallback,...