谁解释一下内核Cryptographic option的配置

shadyslim

为了让内核支持reiser4,编译内核时把Cyptographic选项都打勾了，但不知道这些选项各是什么意思？谁来解释一下啊？

[code:1]# Cryptographic options
CONFIG_CRYPTO=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_WP512=y
# CONFIG_CRYPTO_TGR192 is not set
CONFIG_CRYPTO_DES=y
CONFIG_CRYPTO_BLOWFISH=y
CONFIG_CRYPTO_TWOFISH=y
CONFIG_CRYPTO_SERPENT=y
CONFIG_CRYPTO_AES_586=y
CONFIG_CRYPTO_CAST5=y
CONFIG_CRYPTO_CAST6=y
CONFIG_CRYPTO_TEA=y
CONFIG_CRYPTO_ARC4=y
CONFIG_CRYPTO_KHAZAD=y
CONFIG_CRYPTO_ANUBIS=y
CONFIG_CRYPTO_DEFLATE=y
# CONFIG_CRYPTO_LZF is not set
CONFIG_CRYPTO_MICHAEL_MIC=y
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_TEST=y[/code:1]

shadyslim

为防止帖子没人回话就沉下去，自己顶一个。希望哪位高手站出来，解决偶的疑惑。