Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/crypto/crypto_null.c b/crypto/crypto_null.c
new file mode 100644
index 0000000..f691d31
--- /dev/null
+++ b/crypto/crypto_null.c
@@ -0,0 +1,137 @@
+/*
+ * Cryptographic API.
+ *
+ * Null algorithms, aka Much Ado About Nothing.
+ *
+ * These are needed for IPsec, and may be useful in general for
+ * testing & debugging.
+ *
+ * The null cipher is compliant with RFC2410.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * 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/init.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <asm/scatterlist.h>
+#include <linux/crypto.h>
+
+#define NULL_KEY_SIZE 0
+#define NULL_BLOCK_SIZE 1
+#define NULL_DIGEST_SIZE 0
+
+static int null_compress(void *ctx, const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen)
+{ return 0; }
+
+static int null_decompress(void *ctx, const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen)
+{ return 0; }
+
+static void null_init(void *ctx)
+{ }
+
+static void null_update(void *ctx, const u8 *data, unsigned int len)
+{ }
+
+static void null_final(void *ctx, u8 *out)
+{ }
+
+static int null_setkey(void *ctx, const u8 *key,
+ unsigned int keylen, u32 *flags)
+{ return 0; }
+
+static void null_encrypt(void *ctx, u8 *dst, const u8 *src)
+{ }
+
+static void null_decrypt(void *ctx, u8 *dst, const u8 *src)
+{ }
+
+static struct crypto_alg compress_null = {
+ .cra_name = "compress_null",
+ .cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
+ .cra_blocksize = NULL_BLOCK_SIZE,
+ .cra_ctxsize = 0,
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(compress_null.cra_list),
+ .cra_u = { .compress = {
+ .coa_compress = null_compress,
+ .coa_decompress = null_decompress } }
+};
+
+static struct crypto_alg digest_null = {
+ .cra_name = "digest_null",
+ .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
+ .cra_blocksize = NULL_BLOCK_SIZE,
+ .cra_ctxsize = 0,
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(digest_null.cra_list),
+ .cra_u = { .digest = {
+ .dia_digestsize = NULL_DIGEST_SIZE,
+ .dia_init = null_init,
+ .dia_update = null_update,
+ .dia_final = null_final } }
+};
+
+static struct crypto_alg cipher_null = {
+ .cra_name = "cipher_null",
+ .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
+ .cra_blocksize = NULL_BLOCK_SIZE,
+ .cra_ctxsize = 0,
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(cipher_null.cra_list),
+ .cra_u = { .cipher = {
+ .cia_min_keysize = NULL_KEY_SIZE,
+ .cia_max_keysize = NULL_KEY_SIZE,
+ .cia_setkey = null_setkey,
+ .cia_encrypt = null_encrypt,
+ .cia_decrypt = null_decrypt } }
+};
+
+MODULE_ALIAS("compress_null");
+MODULE_ALIAS("digest_null");
+MODULE_ALIAS("cipher_null");
+
+static int __init init(void)
+{
+ int ret = 0;
+
+ ret = crypto_register_alg(&cipher_null);
+ if (ret < 0)
+ goto out;
+
+ ret = crypto_register_alg(&digest_null);
+ if (ret < 0) {
+ crypto_unregister_alg(&cipher_null);
+ goto out;
+ }
+
+ ret = crypto_register_alg(&compress_null);
+ if (ret < 0) {
+ crypto_unregister_alg(&digest_null);
+ crypto_unregister_alg(&cipher_null);
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+static void __exit fini(void)
+{
+ crypto_unregister_alg(&compress_null);
+ crypto_unregister_alg(&digest_null);
+ crypto_unregister_alg(&cipher_null);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Null Cryptographic Algorithms");