eCryptfs

What kernel options do I need to enable to build eCryptfs?

Asked by Dustin Kirkland 

Code maturity level options --->
  [*] Prompt for development and/or incomplete code/drivers

Security options --->
  <M> Enable access key retention support

Cryptographic options --->
  <M> MD5 digest algorithm
  <M> AES cipher algorithms

File systems --->
  Miscellaneous filesystems --->
    <M> eCrypt filesystem layer support (EXPERIMENTAL)

Recommended .config options (some options not available in older kernels):
CONFIG_EXPERIMENTAL=y
CONFIG_KEYS=y
CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_AES=y
CONFIG_ECRYPT_FS=m

Newer versions of the Linux kernel now have a ``Layered filesystems'' submenu under the ``File systems'' menu, where eCryptfs and Unionfs reside.

Make certain that you have loaded all of the crypto modules that you need to run eCryptfs. This includes ecb, cbc, md5, and at least one popular symmetric cipher, like aes.

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Dustin Kirkland 
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Dustin Kirkland  (kirkland) said : 		#1

From the FAQ:

Code maturity level options --->
  [*] Prompt for development and/or incomplete code/drivers

Security options --->
  <M> Enable access key retention support

Cryptographic options --->
  <M> MD5 digest algorithm
  <M> AES cipher algorithms

File systems --->
  Miscellaneous filesystems --->
    <M> eCrypt filesystem layer support (EXPERIMENTAL)

Recommended .config options (some options not available in older kernels):
CONFIG_EXPERIMENTAL=y
CONFIG_KEYS=y
CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_AES=y
CONFIG_ECRYPT_FS=m

Newer versions of the Linux kernel now have a ``Layered filesystems'' submenu under the ``File systems'' menu, where eCryptfs and Unionfs reside.

Make certain that you have loaded all of the crypto modules that you need to run eCryptfs. This includes ecb, cbc, md5, and at least one popular symmetric cipher, like aes.