Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
crypto: ahash - Add core export and import
Add crypto_ahash_export_core and crypto_ahash_import_core. For
now they only differ from the normal export/import functions when
going through shash.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+48
-1
+24
-1
crypto/ahash.c
+24
-1
crypto/ahash.c
···
698
698
return ahash_def_finup_finish1(req, err);
699
699
}
700
700
701
+
int crypto_ahash_export_core(struct ahash_request *req, void *out)
702
+
{
703
+
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
704
+
705
+
if (likely(tfm->using_shash))
706
+
return crypto_shash_export_core(ahash_request_ctx(req), out);
707
+
return crypto_ahash_alg(tfm)->export(req, out);
708
+
}
709
+
EXPORT_SYMBOL_GPL(crypto_ahash_export_core);
710
+
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int crypto_ahash_export(struct ahash_request *req, void *out)
702
712
{
703
713
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
···
718
708
}
719
709
EXPORT_SYMBOL_GPL(crypto_ahash_export);
720
710
711
+
int crypto_ahash_import_core(struct ahash_request *req, const void *in)
712
+
{
713
+
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
714
+
715
+
if (likely(tfm->using_shash))
716
+
return crypto_shash_import_core(prepare_shash_desc(req, tfm),
717
+
in);
718
+
if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
719
+
return -ENOKEY;
720
+
return crypto_ahash_alg(tfm)->import(req, in);
721
+
}
722
+
EXPORT_SYMBOL_GPL(crypto_ahash_import_core);
723
+
721
724
int crypto_ahash_import(struct ahash_request *req, const void *in)
722
725
{
723
726
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
···
739
716
return crypto_shash_import(prepare_shash_desc(req, tfm), in);
740
717
if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
741
718
return -ENOKEY;
742
-
return crypto_ahash_alg(tfm)->import(req, in);
719
+
return crypto_ahash_import_core(req, in);
743
720
}
744
721
EXPORT_SYMBOL_GPL(crypto_ahash_import);
745
722
+24
include/crypto/hash.h
+24
include/crypto/hash.h
···
507
507
int crypto_ahash_export(struct ahash_request *req, void *out);
508
508
509
509
/**
510
+
* crypto_ahash_export_core() - extract core state for message digest
511
+
* @req: reference to the ahash_request handle whose state is exported
512
+
* @out: output buffer of sufficient size that can hold the hash state
513
+
*
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+
* Export the hash state without the partial block buffer.
515
+
*
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+
* Context: Softirq or process context.
517
+
* Return: 0 if the export creation was successful; < 0 if an error occurred
518
+
*/
519
+
int crypto_ahash_export_core(struct ahash_request *req, void *out);
520
+
521
+
/**
510
522
* crypto_ahash_import() - import message digest state
511
523
* @req: reference to ahash_request handle the state is imported into
512
524
* @in: buffer holding the state
···
530
518
* Return: 0 if the import was successful; < 0 if an error occurred
531
519
*/
532
520
int crypto_ahash_import(struct ahash_request *req, const void *in);
521
+
522
+
/**
523
+
* crypto_ahash_import_core() - import core state
524
+
* @req: reference to ahash_request handle the state is imported into
525
+
* @in: buffer holding the state
526
+
*
527
+
* Import the hash state without the partial block buffer.
528
+
*
529
+
* Context: Softirq or process context.
530
+
* Return: 0 if the import was successful; < 0 if an error occurred
531
+
*/
532
+
int crypto_ahash_import_core(struct ahash_request *req, const void *in);
533
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534
/**
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535
* crypto_ahash_init() - (re)initialize message digest handle