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42 lines
1.5 KiB
42 lines
1.5 KiB
/* Copyright (c) 2014 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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* Host-side misc functions for verified boot.
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*/
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#ifndef VBOOT_REFERENCE_UTIL_MISC_H_
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#define VBOOT_REFERENCE_UTIL_MISC_H_
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#include "vboot_struct.h"
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struct rsa_st;
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/* Prints the sha1sum of the given VbPublicKey to stdout. */
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void PrintPubKeySha1Sum(VbPublicKey* key);
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/*
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* Our packed RSBPublicKey buffer (historically in files ending with ".keyb",
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* but also the part of VbPublicKey and struct vb2_packed_key that is
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* referenced by .key_offset) has this binary format:
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*
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* struct {
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* uint32_t nwords; // size of RSA key in 32-bit words
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* uint32_t N0inv; // -1 / N[0] mod 2^32
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* uint32_t modulus[nwords]; // modulus as a little endian array
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* uint32_t R2[nwords]; // R^2 as little endian array
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* };
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*
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* This function allocates and extracts that binary structure directly
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* from the RSA private key, rather than from a file.
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*
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* @param rsa_private_key RSA private key (duh)
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* @param keyb_data Pointer to newly allocated binary blob
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* @param keyb_size Size of newly allocated binary blob
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*
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* @return 0 on success, non-zero if unable to allocate enough memory.
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*/
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int vb_keyb_from_rsa(struct rsa_st *rsa_private_key,
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uint8_t **keyb_data, uint32_t *keyb_size);
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#endif /* VBOOT_REFERENCE_UTIL_MISC_H_ */
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