move Rust sources to top level, C sources into c_src

[bcachefs-tools-debian] / c_src / linux / crypto / sha256_generic.c

diff --git a/c_src/linux/crypto/sha256_generic.c b/c_src/linux/crypto/sha256_generic.c
new file mode 100644 (file)
index 0000000..9326bfe
--- /dev/null
+++ b/c_src/linux/crypto/sha256_generic.c
@@ -0,0 +1,81 @@
+/*
+ * Cryptographic API.
+ *
+ * SHA-256, as specified in
+ * http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
+ *
+ * SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>.
+ *
+ * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
+ * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ * SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option) 
+ * any later version.
+ *
+ */
+
+#include <linux/bitops.h>
+#include <linux/byteorder.h>
+#include <linux/types.h>
+#include <asm/unaligned.h>
+
+#include <linux/crypto.h>
+#include <crypto/hash.h>
+
+#include <sodium/crypto_hash_sha256.h>
+
+static struct shash_alg sha256_alg;
+
+static int sha256_init(struct shash_desc *desc)
+{
+       crypto_hash_sha256_state *state = (void *) desc->ctx;
+
+       return crypto_hash_sha256_init(state);
+}
+
+static int sha256_update(struct shash_desc *desc, const u8 *data,
+                         unsigned int len)
+{
+       crypto_hash_sha256_state *state = (void *) desc->ctx;
+
+       return crypto_hash_sha256_update(state, data, len);
+}
+
+static int sha256_final(struct shash_desc *desc, u8 *out)
+{
+       crypto_hash_sha256_state *state = (void *) desc->ctx;
+
+       return crypto_hash_sha256_final(state, out);
+}
+
+static void *sha256_alloc_tfm(void)
+{
+       struct crypto_shash *tfm = kzalloc(sizeof(*tfm), GFP_KERNEL);
+
+       if (!tfm)
+               return NULL;
+
+       tfm->base.alg = &sha256_alg.base;
+       tfm->descsize = sizeof(crypto_hash_sha256_state);
+       return tfm;
+}
+
+static struct shash_alg sha256_alg = {
+       .digestsize     = crypto_hash_sha256_BYTES,
+       .init           = sha256_init,
+       .update         = sha256_update,
+       .final          = sha256_final,
+       .descsize       = sizeof(crypto_hash_sha256_state),
+       .base.cra_name  = "sha256",
+       .base.alloc_tfm = sha256_alloc_tfm,
+};
+
+__attribute__((constructor(110)))
+static int __init sha256_generic_mod_init(void)
+{
+       return crypto_register_shash(&sha256_alg);
+}