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https://github.com/Telecominfraproject/OpenCellular.git
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fc70d72aaa
Refactor and restructure reference code into individual self-contain modules. I have revamped the way the code is structured to make it easy to determine which parts belong in the firmware and which are used by userland tools. common/ - common utilities and stub functions (Firmware) cryptolib/ - crypto library (Firmware) misclibs/ - miscellaneous userland libraries (Userland) sctips/ - Miscellaenous scripts (Userland) tests/ - Tests (Userland) vfirmware/ - Verified Firmware Implementation vfirmware/firmware_image_fw.c (Firmware) vfirmware/firmware_image.c (Userland) vkernel/ - Verified Kernel Implementation vkernel/kernel_image_fw.c (Firmware) vkernel/kernel_image.c (Userland) Review URL: http://codereview.chromium.org/1581005
129 lines
3.8 KiB
C
129 lines
3.8 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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/* SHA-1, 256 and 512 functions. */
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#ifndef VBOOT_REFERENCE_SHA_H_
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#define VBOOT_REFERENCE_SHA_H_
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#ifndef VBOOT_REFERENCE_CRYPTOLIB_H_
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#error "Do not include this file directly. Use cryptolib.h instead."
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#endif
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#include <stdint.h>
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#define SHA1_DIGEST_SIZE 20
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#define SHA1_BLOCK_SIZE 64
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#define SHA256_DIGEST_SIZE 32
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#define SHA256_BLOCK_SIZE 64
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#define SHA512_DIGEST_SIZE 64
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#define SHA512_BLOCK_SIZE 128
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typedef struct SHA1_CTX {
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uint64_t count;
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uint32_t state[5];
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#if defined(HAVE_ENDIAN_H) && defined(HAVE_LITTLE_ENDIAN)
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union {
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uint8_t b[64];
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uint32_t w[16];
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} buf;
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#else
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uint8_t buf[64];
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#endif
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} SHA1_CTX;
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typedef struct {
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uint32_t h[8];
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uint32_t tot_len;
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uint32_t len;
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uint8_t block[2 * SHA256_BLOCK_SIZE];
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uint8_t buf[SHA256_DIGEST_SIZE]; /* Used for storing the final digest. */
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} SHA256_CTX;
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typedef struct {
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uint64_t h[8];
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uint32_t tot_len;
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uint32_t len;
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uint8_t block[2 * SHA512_BLOCK_SIZE];
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uint8_t buf[SHA512_DIGEST_SIZE]; /* Used for storing the final digest. */
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} SHA512_CTX;
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void SHA1_init(SHA1_CTX* ctx);
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void SHA1_update(SHA1_CTX* ctx, const uint8_t* data, uint64_t len);
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uint8_t* SHA1_final(SHA1_CTX* ctx);
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void SHA256_init(SHA256_CTX* ctx);
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void SHA256_update(SHA256_CTX* ctx, const uint8_t* data, uint64_t len);
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uint8_t* SHA256_final(SHA256_CTX* ctx);
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void SHA512_init(SHA512_CTX* ctx);
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void SHA512_update(SHA512_CTX* ctx, const uint8_t* data, uint64_t len);
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uint8_t* SHA512_final(SHA512_CTX* ctx);
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/* Convenience function for SHA-1. Computes hash on [data] of length [len].
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* and stores it into [digest]. [digest] should be pre-allocated to
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* SHA1_DIGEST_SIZE bytes.
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*/
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uint8_t* SHA1(const uint8_t* data, uint64_t len, uint8_t* digest);
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/* Convenience function for SHA-256. Computes hash on [data] of length [len].
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* and stores it into [digest]. [digest] should be pre-allocated to
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* SHA256_DIGEST_SIZE bytes.
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*/
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uint8_t* SHA256(const uint8_t* data, uint64_t len, uint8_t* digest);
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/* Convenience function for SHA-512. Computes hash on [data] of length [len].
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* and stores it into [digest]. [digest] should be pre-allocated to
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* SHA512_DIGEST_SIZE bytes.
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*/
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uint8_t* SHA512(const uint8_t* data, uint64_t len, uint8_t* digest);
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/*---- Utility functions/wrappers for message digests. */
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#define SHA1_DIGEST_ALGORITHM 0
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#define SHA256_DIGEST_ALGORITHM 1
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#define SHA512_DIGEST_ALGORITHM 2
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/* A generic digest context structure which can be used to represent
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* the SHA*_CTX for multiple digest algorithms.
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*/
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typedef struct DigestContext {
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SHA1_CTX* sha1_ctx;
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SHA256_CTX* sha256_ctx;
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SHA512_CTX* sha512_ctx;
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int algorithm; /* Hashing algorithm to use. */
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} DigestContext;
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/* Wrappers for message digest algorithms. These are useful when the hashing
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* operation is being done in parallel with something else. DigestContext tracks
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* and stores the state of any digest algorithm (one at any given time).
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*/
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/* Initialize a digest context for use with signature algorithm [algorithm]. */
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void DigestInit(DigestContext* ctx, int sig_algorithm);
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void DigestUpdate(DigestContext* ctx, const uint8_t* data, uint64_t len);
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/* Caller owns the returned digest and must free it. */
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uint8_t* DigestFinal(DigestContext* ctx);
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/* Returns the appropriate digest for the data in [input_file]
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* based on the signature [algorithm].
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* Caller owns the returned digest and must free it.
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*/
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uint8_t* DigestFile(char* input_file, int sig_algorithm);
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/* Returns the appropriate digest of [buf] of length
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* [len] based on the signature [algorithm].
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* Caller owns the returned digest and must free it.
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*/
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uint8_t* DigestBuf(const uint8_t* buf, uint64_t len, int sig_algorithm);
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#endif /* VBOOT_REFERENCE_SHA_H_ */
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