Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / cbc.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/cbc.h b/qemu/roms/ipxe/src/include/ipxe/cbc.h
new file mode 100644 (file)
index 0000000..fae3765
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/cbc.h
@@ -0,0 +1,100 @@
+#ifndef _IPXE_CBC_H
+#define _IPXE_CBC_H
+
+/** @file
+ *
+ * Cipher-block chaining
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <ipxe/crypto.h>
+
+/**
+ * Set key
+ *
+ * @v ctx              Context
+ * @v key              Key
+ * @v keylen           Key length
+ * @v raw_cipher       Underlying cipher algorithm
+ * @v cbc_ctx          CBC context
+ * @ret rc             Return status code
+ */
+static inline int cbc_setkey ( void *ctx, const void *key, size_t keylen,
+                              struct cipher_algorithm *raw_cipher,
+                              void *cbc_ctx __unused ) {
+
+       return cipher_setkey ( raw_cipher, ctx, key, keylen );
+}
+
+/**
+ * Set initialisation vector
+ *
+ * @v ctx              Context
+ * @v iv               Initialisation vector
+ * @v raw_cipher       Underlying cipher algorithm
+ * @v cbc_ctx          CBC context
+ */
+static inline void cbc_setiv ( void *ctx __unused, const void *iv,
+                              struct cipher_algorithm *raw_cipher,
+                              void *cbc_ctx ) {
+       memcpy ( cbc_ctx, iv, raw_cipher->blocksize );
+}
+
+extern void cbc_encrypt ( void *ctx, const void *src, void *dst,
+                         size_t len, struct cipher_algorithm *raw_cipher,
+                         void *cbc_ctx );
+extern void cbc_decrypt ( void *ctx, const void *src, void *dst,
+                         size_t len, struct cipher_algorithm *raw_cipher,
+                         void *cbc_ctx );
+
+/**
+ * Create a cipher-block chaining mode of behaviour of an existing cipher
+ *
+ * @v _cbc_name                Name for the new CBC cipher
+ * @v _cbc_cipher      New cipher algorithm
+ * @v _raw_cipher      Underlying cipher algorithm
+ * @v _raw_context     Context structure for the underlying cipher
+ * @v _blocksize       Cipher block size
+ */
+#define CBC_CIPHER( _cbc_name, _cbc_cipher, _raw_cipher, _raw_context, \
+                   _blocksize )                                        \
+struct _cbc_name ## _context {                                         \
+       _raw_context raw_ctx;                                           \
+       uint8_t cbc_ctx[_blocksize];                                    \
+};                                                                     \
+static int _cbc_name ## _setkey ( void *ctx, const void *key,          \
+                                 size_t keylen ) {                     \
+       struct _cbc_name ## _context * _cbc_name ## _ctx = ctx;         \
+       return cbc_setkey ( &_cbc_name ## _ctx->raw_ctx, key, keylen,   \
+                           &_raw_cipher, &_cbc_name ## _ctx->cbc_ctx );\
+}                                                                      \
+static void _cbc_name ## _setiv ( void *ctx, const void *iv ) {                \
+       struct _cbc_name ## _context * _cbc_name ## _ctx = ctx;         \
+       cbc_setiv ( &_cbc_name ## _ctx->raw_ctx, iv,                    \
+                   &_raw_cipher, &aes_cbc_ctx->cbc_ctx );              \
+}                                                                      \
+static void _cbc_name ## _encrypt ( void *ctx, const void *src,                \
+                                   void *dst, size_t len ) {           \
+       struct _cbc_name ## _context * _cbc_name ## _ctx = ctx;         \
+       cbc_encrypt ( &_cbc_name ## _ctx->raw_ctx, src, dst, len,       \
+                     &_raw_cipher, &aes_cbc_ctx->cbc_ctx );            \
+}                                                                      \
+static void _cbc_name ## _decrypt ( void *ctx, const void *src,                \
+                                   void *dst, size_t len ) {           \
+       struct _cbc_name ## _context * _cbc_name ## _ctx = ctx;         \
+       cbc_decrypt ( &_cbc_name ## _ctx->raw_ctx, src, dst, len,       \
+                     &_raw_cipher, &aes_cbc_ctx->cbc_ctx );            \
+}                                                                      \
+struct cipher_algorithm _cbc_cipher = {                                        \
+       .name           = #_cbc_name,                                   \
+       .ctxsize        = sizeof ( struct _cbc_name ## _context ),      \
+       .blocksize      = _blocksize,                                   \
+       .setkey         = _cbc_name ## _setkey,                         \
+       .setiv          = _cbc_name ## _setiv,                          \
+       .encrypt        = _cbc_name ## _encrypt,                        \
+       .decrypt        = _cbc_name ## _decrypt,                        \
+};
+
+#endif /* _IPXE_CBC_H */