diff options
| -rw-r--r-- | crypto/shash.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/crypto/shash.c b/crypto/shash.c index 7713b520bc98..98b7f46ca1ed 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -183,14 +183,16 @@ int crypto_shash_digest(struct shash_desc *desc, const u8 *data, } EXPORT_SYMBOL_GPL(crypto_shash_digest); -static int shash_no_export(struct shash_desc *desc, void *out) +static int shash_default_export(struct shash_desc *desc, void *out) { - return -ENOSYS; + memcpy(out, shash_desc_ctx(desc), crypto_shash_descsize(desc->tfm)); + return 0; } -static int shash_no_import(struct shash_desc *desc, const void *in) +static int shash_default_import(struct shash_desc *desc, const void *in) { - return -ENOSYS; + memcpy(shash_desc_ctx(desc), in, crypto_shash_descsize(desc->tfm)); + return 0; } static int shash_async_setkey(struct crypto_ahash *tfm, const u8 *key, @@ -563,10 +565,11 @@ static int shash_prepare_alg(struct shash_alg *alg) alg->finup = shash_finup_unaligned; if (!alg->digest) alg->digest = shash_digest_unaligned; - if (!alg->import) - alg->import = shash_no_import; - if (!alg->export) - alg->export = shash_no_export; + if (!alg->export) { + alg->export = shash_default_export; + alg->import = shash_default_import; + alg->statesize = alg->descsize; + } if (!alg->setkey) alg->setkey = shash_no_setkey; |