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[CRYPTO] cipher: Added block ciphers for CBC/ECB

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This patch adds two block cipher algorithms, CBC and ECB.  These
are implemented as templates on top of existing single-block cipher
algorithms.  They invoke the single-block cipher through the new
encrypt_one/decrypt_one interface.

This also optimises the in-place encryption and decryption to remove
the cost of an IV copy each round.

Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Herbert Xu 2006-09-21 11:44:08 +10:00
commit db131ef908
6 changed files with 546 additions and 1 deletions
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17
crypto/Kconfig
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@ -123,6 +123,23 @@ config CRYPTO_TGR192
See also:
<http://www.cs.technion.ac.il/~biham/Reports/Tiger/>.
config CRYPTO_ECB
tristate "ECB support"
select CRYPTO_BLKCIPHER
default m
help
ECB: Electronic CodeBook mode
This is the simplest block cipher algorithm. It simply encrypts
the input block by block.
config CRYPTO_CBC
tristate "CBC support"
select CRYPTO_BLKCIPHER
default m
help
CBC: Cipher Block Chaining mode
This block cipher algorithm is required for IPSec.
config CRYPTO_DES
tristate "DES and Triple DES EDE cipher algorithms"
select CRYPTO_ALGAPI