diff --git a/crypto/internal.h b/crypto/internal.h
new file mode 100644
index 0000000..e68e438
--- /dev/null
+++ b/crypto/internal.h
@@ -0,0 +1,92 @@
+/*
+ * Cryptographic API.
+ *
+ * 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.
+ *
+ */
+#ifndef _CRYPTO_INTERNAL_H
+#define _CRYPTO_INTERNAL_H
+#include <linux/crypto.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/kmod.h>
+#include <asm/kmap_types.h>
+
+extern enum km_type crypto_km_types[];
+
+static inline enum km_type crypto_kmap_type(int out)
+{
+	return crypto_km_types[(in_softirq() ? 2 : 0) + out];
+}
+
+static inline void *crypto_kmap(struct page *page, int out)
+{
+	return kmap_atomic(page, crypto_kmap_type(out));
+}
+
+static inline void crypto_kunmap(void *vaddr, int out)
+{
+	kunmap_atomic(vaddr, crypto_kmap_type(out));
+}
+
+static inline void crypto_yield(struct crypto_tfm *tfm)
+{
+	if (!in_softirq())
+		cond_resched();
+}
+
+static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
+{
+	return (void *)&tfm[1];
+}
+
+struct crypto_alg *crypto_alg_lookup(const char *name);
+
+/* A far more intelligent version of this is planned.  For now, just
+ * try an exact match on the name of the algorithm. */
+static inline struct crypto_alg *crypto_alg_mod_lookup(const char *name)
+{
+	return try_then_request_module(crypto_alg_lookup(name), name);
+}
+
+#ifdef CONFIG_CRYPTO_HMAC
+int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
+void crypto_free_hmac_block(struct crypto_tfm *tfm);
+#else
+static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
+{
+	return 0;
+}
+
+static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
+{ }
+#endif
+
+#ifdef CONFIG_PROC_FS
+void __init crypto_init_proc(void);
+#else
+static inline void crypto_init_proc(void)
+{ }
+#endif
+
+int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
+int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
+int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
+
+int crypto_init_digest_ops(struct crypto_tfm *tfm);
+int crypto_init_cipher_ops(struct crypto_tfm *tfm);
+int crypto_init_compress_ops(struct crypto_tfm *tfm);
+
+void crypto_exit_digest_ops(struct crypto_tfm *tfm);
+void crypto_exit_cipher_ops(struct crypto_tfm *tfm);
+void crypto_exit_compress_ops(struct crypto_tfm *tfm);
+
+#endif	/* _CRYPTO_INTERNAL_H */
+