Commit Graph

10 Commits

Author SHA1 Message Date
Richard Henderson
a3db31b83e crypto/builtin: Split QCryptoCipherBuiltin into subclasses
We had a second set of function pointers in QCryptoCipherBuiltin,
which are redundant with QCryptoCipherDriver.  Split the AES and
DES implementations to avoid one level of indirection.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00
Richard Henderson
ef186f4bc2 crypto/builtin: Split and simplify AES_encrypt_cbc
Split into encrypt/decrypt functions, dropping the "enc" argument.
Now that the function is private to this file, we know that "len"
is a multiple of AES_BLOCK_SIZE.  So drop the odd block size code.

Name the functions do_aes_*crypt_cbc to match the *_ecb functions.
Reorder and re-type the arguments to match as well.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00
Richard Henderson
a2d76b6b2e crypto/builtin: Move AES_cbc_encrypt into cipher-builtin.inc.c
By making the function private, we will be able to make further
simplifications.  Re-indent the migrated code and fix the missing
braces for CODING_STYLE.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00
Richard Henderson
8ee47cddbe crypto/builtin: Merge qcrypto_cipher_aes_{ecb,xts}_{en,de}crypt
There's no real reason we need two separate helper functions here.
Standardize on the function signature required for xts_encrypt.
Rename to do_aes_{en,de}crypt_ecb, since the helper does not
itself do anything with respect to xts.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00
Richard Henderson
838e4631cb crypto/builtin: Remove odd-sized AES block handling
We verified that the data block is properly sized modulo
AES_BLOCK_SIZE within qcrypto_builtin_cipher_{en,de}crypt.
Therefore we will never have to handle odd sized blocks.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00
Richard Henderson
da30cd77e1 crypto: Move cipher->driver init to qcrypto_*_cipher_ctx_new
The class vtable should be set by the class initializer.
This will also allow additional subclassing, reducing the
amount of indirection in the hierarchy.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00
Richard Henderson
3eedf5cc9d crypto: Allocate QCryptoCipher with the subclass
Merge the allocation of "opaque" into the allocation of "cipher".
This is step one in reducing the indirection in these classes.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00
Richard Henderson
7b5dbfb777 crypto: Use the correct const type for driver
This allows the in memory structures to be read-only.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00
Richard Henderson
7d823bf4e9 crypto: Remove redundant includes
Both qemu/osdep.h and cipherpriv.h have already been
included by the parent cipher.c.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00
Richard Henderson
6d92bdf443 crypto: Rename cipher include files to .c.inc
QEMU standard procedure for included c files is to use *.c.inc.
E.g. there are a different set of checks that are applied.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-10 11:02:23 +01:00