メモメモ CBC

https://golang.org/pkg/crypto/cipher/#NewCBCDecrypter

https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29

Advanced Encryption Standard - Wikipedia

SPN構造 - Wikipedia

https://en.wikipedia.org/wiki/Feistel_cipher#Construction_details

Initialization vector - Wikipedia, the free encyclopedia

---

トリプルDES - Wikipedia

メモメモ interface checks

https://golang.org/doc/effective_go.html#blank_implements

メモメモ composite literals

https://golang.org/doc/effective_go.html#composite_literals

メモメモ sieve

https://golang.org/ref/spec#An_example_package

エラトステネスの篩 - Wikipedia

メモメモ type switches

https://golang.org/ref/spec#Type_switches

could be rewritten:

メモメモ constants

https://golang.org/ref/spec#Constants

http://en.wikipedia.org/wiki/IEEE_754-1985#Positive_and_negative_infinity

メモメモ FileServer

http://golang.org/pkg/net/http/#FileServer