mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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729b87258b
No substantial new code, just making the old code consistent. Review URL: http://codereview.chromium.org/2729021
93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Common functions between firmware and kernel verified boot.
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*/
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#ifndef VBOOT_REFERENCE_VBOOT_COMMON_H_
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#define VBOOT_REFERENCE_VBOOT_COMMON_H_
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#include <stdint.h>
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#include "cryptolib.h"
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#include "vboot_struct.h"
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/* Error Codes for VerifyFirmware. */
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#define VBOOT_SUCCESS 0
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#define VBOOT_INVALID_IMAGE 1
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#define VBOOT_KEY_SIGNATURE_FAILED 2
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#define VBOOT_INVALID_ALGORITHM 3
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#define VBOOT_PREAMBLE_SIGNATURE_FAILED 4
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#define VBOOT_SIGNATURE_FAILED 5
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#define VBOOT_WRONG_MAGIC 6
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#define VBOOT_ERROR_MAX 7 /* Generic catch-all. */
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extern char* kVbootErrors[VBOOT_ERROR_MAX];
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/* Return offset of ptr from base. */
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uint64_t OffsetOf(const void* base, const void* ptr);
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/* Helper functions to get data pointed to by a public key or signature. */
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uint8_t* GetPublicKeyData(VbPublicKey* key);
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const uint8_t* GetPublicKeyDataC(const VbPublicKey* key);
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uint8_t* GetSignatureData(VbSignature* sig);
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const uint8_t* GetSignatureDataC(const VbSignature* sig);
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/* Helper functions to verify the data pointed to by a subfield is inside
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* the parent data. Returns 0 if inside, 1 if error. */
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int VerifyMemberInside(const void* parent, uint64_t parent_size,
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const void* member, uint64_t member_size,
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uint64_t member_data_offset,
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uint64_t member_data_size);
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int VerifyPublicKeyInside(const void* parent, uint64_t parent_size,
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const VbPublicKey* key);
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int VerifySignatureInside(const void* parent, uint64_t parent_size,
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const VbSignature* sig);
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/* Converts a public key to RsaPublicKey format. The returned key must
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* be freed using RSAPublicKeyFree().
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*
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* Returns NULL if error. */
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RSAPublicKey* PublicKeyToRSA(const VbPublicKey* key);
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/* Verifies [data] matches signature [sig] using [key]. */
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int VerifyData(const uint8_t* data, const VbSignature* sig,
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const RSAPublicKey* key);
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/* Checks the sanity of a key block of size [size] bytes, using public
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* key [key]. If [key]==NULL, uses only the block checksum to verify
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* the key block. Header fields are also checked for sanity. Does not
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* verify key index or key block flags. */
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int KeyBlockVerify(const VbKeyBlockHeader* block, uint64_t size,
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const VbPublicKey *key);
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/* Checks the sanity of a firmware preamble of size [size] bytes,
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* using public key [key].
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*
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* Returns VBOOT_SUCCESS if successful. */
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int VerifyFirmwarePreamble2(const VbFirmwarePreambleHeader* preamble,
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uint64_t size, const RSAPublicKey* key);
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/* Checks the sanity of a kernel preamble of size [size] bytes,
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* using public key [key].
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*
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* Returns VBOOT_SUCCESS if successful. */
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int VerifyKernelPreamble2(const VbKernelPreambleHeader* preamble,
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uint64_t size, const RSAPublicKey* key);
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#endif /* VBOOT_REFERENCE_VBOOT_COMMON_H_ */
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