crypto: cast5 - prepare generic module for optimized implementations

[karo-tx-linux.git] / include / crypto / cast5.h

diff --git a/include/crypto/cast5.h b/include/crypto/cast5.h
new file mode 100644 (file)
index 0000000..dcb90c1
--- /dev/null
+++ b/include/crypto/cast5.h
@@ -0,0 +1,22 @@
+#ifndef _CRYPTO_CAST5_H
+#define _CRYPTO_CAST5_H
+
+#include <linux/types.h>
+#include <linux/crypto.h>
+
+#define CAST5_BLOCK_SIZE 8
+#define CAST5_MIN_KEY_SIZE 5
+#define CAST5_MAX_KEY_SIZE 16
+
+struct cast5_ctx {
+       u32 Km[16];
+       u8 Kr[16];
+       int rr; /* rr ? rounds = 12 : rounds = 16; (rfc 2144) */
+};
+
+int cast5_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen);
+
+void __cast5_encrypt(struct cast5_ctx *ctx, u8 *dst, const u8 *src);
+void __cast5_decrypt(struct cast5_ctx *ctx, u8 *dst, const u8 *src);
+
+#endif