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-rw-r--r--crypto/shash.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/crypto/shash.c b/crypto/shash.c
index c075b26c2a1d..e6a4b5f39b8c 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -206,6 +206,22 @@ int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
}
EXPORT_SYMBOL_GPL(crypto_shash_digest);
+int crypto_shash_tfm_digest(struct crypto_shash *tfm, const u8 *data,
+ unsigned int len, u8 *out)
+{
+ SHASH_DESC_ON_STACK(desc, tfm);
+ int err;
+
+ desc->tfm = tfm;
+
+ err = crypto_shash_digest(desc, data, len, out);
+
+ shash_desc_zero(desc);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(crypto_shash_tfm_digest);
+
static int shash_default_export(struct shash_desc *desc, void *out)
{
memcpy(out, shash_desc_ctx(desc), crypto_shash_descsize(desc->tfm));