enum ChildSaEncryptionAlgorithm

Child Security Association(SA) encryption algorithms.

`11`	`ENCR_NULL` ENCR_NULL --> RFC_2410.
`1024`	`ENCR_AES_CBC_128` ENCR_AES_CBC_128 --> RFC_5996.
`1026`	`ENCR_AES_CBC_256` ENCR_AES_CBC_128 --> RFC_5996.
`3`	`ENCR_3DES` ENCR_3DES --> RFC_5996.
`1025`	`ENCR_AES_CBC_192` ENCR_AES_CBC_192 --> RFC_5996.
`1027`	`ENCR_BLOWFISH_128` ENCR_BLOWFISH_128 --> RFC_5996.
`1028`	`ENCR_BLOWFISH_192` ENCR_BLOWFISH_192 --> RFC_5996.
`1029`	`ENCR_BLOWFISH_256` ENCR_BLOWFISH_256 --> RFC_5996.
`1031`	`ENCR_CAMELLIA_128` ENCR_CAMELLIA_128 --> RFC_5996.
`1032`	`ENCR_CAMELLIA_192` ENCR_CAMELLIA_192 --> RFC_5996.
`1033`	`ENCR_CAMELLIA_256` ENCR_CAMELLIA_256 --> RFC_5996.