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400851595a
2048-bit RSA public key cryptography signature verification code which uses a pre-processed key for computation. it is based on the code from vboot : platform/vboot_reference/firmware/2lib/2rsa.c Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=samus BUG=chrome-os-partner:28336 TEST=using following CL, on Zinger, verify RW firmware signature. Change-Id: I681a29144eb805cd5758aa6efe697ce2f656a298 Reviewed-on: https://chromium-review.googlesource.com/220186 Reviewed-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Alec Berg <alecaberg@chromium.org> Commit-Queue: Vincent Palatin <vpalatin@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org>
27 lines
765 B
C
27 lines
765 B
C
/* 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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#ifndef _INCLUDE_RSA_H
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#define _INCLUDE_RSA_H
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#include "common.h"
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#define RSANUMBYTES 256 /* 2048 bit key length */
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#define RSANUMWORDS (RSANUMBYTES / sizeof(uint32_t))
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/* 2048-bit RSA public key definition */
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struct rsa_public_key {
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uint32_t n[RSANUMWORDS]; /* modulus as little endian array */
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uint32_t rr[RSANUMWORDS]; /* R^2 as little endian array */
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uint32_t n0inv; /* -1 / n[0] mod 2^32 */
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};
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int rsa_verify(const struct rsa_public_key *key,
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const uint8_t *signature,
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const uint8_t *sha,
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uint32_t *workbuf32);
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#endif /* _INCLUDE_RSA_H */
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