Revert "VBoot Reference: Refactor Part 2 - Crypto Libraries"

src/platform/vboot_reference/include/rsa_utility.h

Index: src/platform/vboot_reference/include/rsa_utility.h
diff --git a/src/platform/vboot_reference/include/rsa_utility.h b/src/platform/vboot_reference/include/rsa_utility.h
new file mode 100644
index 0000000000000000000000000000000000000000..652227c34c7a350e41de90aa4fef514002d40aa5
--- /dev/null
+++ b/src/platform/vboot_reference/include/rsa_utility.h
@@ -0,0 +1,58 @@
+/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Some utility functions for use with RSA signature verification.
+ */
+
+#ifndef VBOOT_REFERENCE_RSA_UTILITY_H_
+#define VBOOT_REFERENCE_RSA_UTILITY_H_
+
+#include "rsa.h"
+
+/* Returns the size of a pre-processed RSA public key in bytes with algorithm
+ * [algorithm]. */
+int RSAProcessedKeySize(int algorithm);
+
+/* Allocate a new RSAPublicKey structure and initialize its pointer fields to
+ * NULL */
+RSAPublicKey* RSAPublicKeyNew(void);
+
+/* Deep free the contents of [key]. */
+void RSAPublicKeyFree(RSAPublicKey* key);
+
+/* Create a RSAPublic key structure from binary blob [buf] of length
+ * [len].
+ *
+ * Caller owns the returned key and must free it.
+ */
+RSAPublicKey* RSAPublicKeyFromBuf(const uint8_t* buf, int len);
+
+/* Perform RSA signature verification on [buf] of length [len] against expected
+ * signature [sig] using signature algorithm [algorithm]. The public key used
+ * for verification can either be in the form of a pre-process key blob
+ * [key_blob] or RSAPublicKey structure [key]. One of [key_blob] or [key] must
+ * be non-NULL, and the other NULL or the function will fail.
+ *
+ * Returns 1 on verification success, 0 on verification failure or invalid
+ * arguments.
+ *
+ * Note: This function is for use in the firmware and assumes all pointers point
+ * to areas in the memory of the right size.
+ *
+ */
+int RSAVerifyBinary_f(const uint8_t* key_blob,
+                      const RSAPublicKey* key,
+                      const uint8_t* buf,
+                      uint64_t len,
+                      const uint8_t* sig,
+                      int algorithm);
+
+/* Version of RSAVerifyBinary_f() where instead of the raw binary blob
+ * of data, its digest is passed as the argument. */
+int RSAVerifyBinaryWithDigest_f(const uint8_t* key_blob,
+                                const RSAPublicKey* key,
+                                const uint8_t* digest,
+                                const uint8_t* sig,
+                                int algorithm);
+#endif  /* VBOOT_REFERENCE_RSA_UTILITY_H_ */