vboot: remove Boot Descriptor Block (BDB) library and utilities

Remove unused BDB code, previously created for a cancelled SoC
project.

BUG=b:124141368, chromium:986177
TEST=make clean && make runtests
BRANCH=none

Change-Id: I91faf97d9850f8afb816fa324ad9a4d9f3842888
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1710336
Tested-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Joel Kitching <kitching@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>

1 files changed, 0 insertions, 200 deletions

diff --git a/firmware/bdb/dump_rsa.c b/firmware/bdb/dump_rsa.c
deleted file mode 100644
index c40f803a..00000000
--- a/firmware/bdb/dump_rsa.c
+++ /dev/null
@@ -1,200 +0,0 @@
-/* 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.
- */
-
-/*
- * C port of DumpPublicKey.java from the Android Open source project with
- * support for additional RSA key sizes. (platform/system/core,git/libmincrypt
- * /tools/DumpPublicKey.java). Uses the OpenSSL X509 and BIGNUM library.
- */
-
-#include <openssl/pem.h>
-
-#include <stdint.h>
-#include <string.h>
-#include <unistd.h>
-
-/*
- * Command line tool to extract RSA public keys from X.509 certificates and
- * output a pre-processed version of keys for use by RSA verification routines.
- */
-
-int check(RSA *key)
-{
-	int public_exponent = BN_get_word(key->e);
-	int modulus = BN_num_bits(key->n);
-
-	if (public_exponent != 65537 && public_exponent != 3) {
-		fprintf(stderr, "WARNING: Non-standard public exponent %d.\n",
-			public_exponent);
-	}
-
-	if (modulus != 1024 && modulus != 2048 && modulus != 3072 &&
-	    modulus != 4096 && modulus != 8192) {
-		fprintf(stderr, "WARNING: Non-standard modulus length = %d.\n",
-			modulus);
-	}
-	return 1;
-}
-
-/**
- * Pre-processes and outputs RSA public key to standard output.
- */
-void output(RSA *key)
-{
-	BIGNUM *N;
-	BIGNUM *Big1 = NULL, *Big2 = NULL, *Big32 = NULL, *BigMinus1 = NULL;
-	BIGNUM *B = NULL;
-	BIGNUM *N0inv= NULL, *R = NULL, *RR = NULL, *RRTemp = NULL;
-	BIGNUM *NnumBits = NULL;
-	BIGNUM *n = NULL, *rr = NULL;
-	BN_CTX *bn_ctx = BN_CTX_new();
-	uint32_t n0invout;
-	int nwords, i;
-
-	N = key->n;
-	/* Output size of RSA key in 32-bit words */
-	nwords = BN_num_bits(N) / 32;
-	if (-1 == write(1, &nwords, sizeof(nwords)))
-		goto failure;
-
-	/* Initialize BIGNUMs */
-	Big1 = BN_new();
-	Big2 = BN_new();
-	Big32 = BN_new();
-	BigMinus1 = BN_new();
-	N0inv= BN_new();
-	R = BN_new();
-	RR = BN_new();
-	RRTemp = BN_new();
-	NnumBits = BN_new();
-	n = BN_new();
-	rr = BN_new();
-
-	BN_set_word(Big1, 1L);
-	BN_set_word(Big2, 2L);
-	BN_set_word(Big32, 32L);
-	BN_sub(BigMinus1, Big1, Big2);
-
-	B = BN_new();
-	BN_exp(B, Big2, Big32, bn_ctx); /* B = 2^32 */
-
-	/* Calculate and output N0inv = -1 / N[0] mod 2^32 */
-	BN_mod_inverse(N0inv, N, B, bn_ctx);
-	BN_sub(N0inv, B, N0inv);
-	n0invout = BN_get_word(N0inv);
-	if (-1 == write(1, &n0invout, sizeof(n0invout)))
-		goto failure;
-
-	/* Calculate R = 2^(# of key bits) */
-	BN_set_word(NnumBits, BN_num_bits(N));
-	BN_exp(R, Big2, NnumBits, bn_ctx);
-
-	/* Calculate RR = R^2 mod N */
-	BN_copy(RR, R);
-	BN_mul(RRTemp, RR, R, bn_ctx);
-	BN_mod(RR, RRTemp, N, bn_ctx);
-
-	/* Write out modulus as little endian array of integers. */
-	for (i = 0; i < nwords; ++i) {
-		uint32_t nout;
-
-		BN_mod(n, N, B, bn_ctx); /* n = N mod B */
-		nout = BN_get_word(n);
-		if (-1 == write(1, &nout, sizeof(nout)))
-			goto failure;
-
-		BN_rshift(N, N, 32); /*  N = N/B */
-	}
-
-	/* Write R^2 as little endian array of integers. */
-	for (i = 0; i < nwords; ++i) {
-		uint32_t rrout;
-
-		BN_mod(rr, RR, B, bn_ctx); /* rr = RR mod B */
-		rrout = BN_get_word(rr);
-		if (-1 == write(1, &rrout, sizeof(rrout)))
-			goto failure;
-
-		BN_rshift(RR, RR, 32); /* RR = RR/B */
-	}
-
- failure:
-	/* Free BIGNUMs. */
-	BN_free(Big1);
-	BN_free(Big2);
-	BN_free(Big32);
-	BN_free(BigMinus1);
-	BN_free(N0inv);
-	BN_free(R);
-	BN_free(RRTemp);
-	BN_free(NnumBits);
-	BN_free(n);
-	BN_free(rr);
-
-}
-
-int main(int argc, char* argv[]) {
-	int cert_mode = 0;
-	FILE* fp;
-	X509* cert = NULL;
-	RSA* pubkey = NULL;
-	EVP_PKEY* key;
-	char *progname;
-
-	if (argc != 3 ||
-	    (strcmp(argv[1], "-cert") && strcmp(argv[1], "-pub"))) {
-		progname = strrchr(argv[0], '/');
-		if (progname)
-			progname++;
-		else
-			progname = argv[0];
-		fprintf(stderr, "Usage: %s <-cert | -pub> <file>\n", progname);
-		return -1;
-	}
-
-	if (!strcmp(argv[1], "-cert"))
-		cert_mode = 1;
-
-	fp = fopen(argv[2], "r");
-
-	if (!fp) {
-		fprintf(stderr, "Couldn't open file %s!\n", argv[2]);
-		return -1;
-	}
-
-	if (cert_mode) {
-		/* Read the certificate */
-		if (!PEM_read_X509(fp, &cert, NULL, NULL)) {
-			fprintf(stderr, "Couldn't read certificate.\n");
-			goto fail;
-		}
-
-		/* Get the public key from the certificate. */
-		key = X509_get_pubkey(cert);
-
-		/* Convert to a RSA_style key. */
-		if (!(pubkey = EVP_PKEY_get1_RSA(key))) {
-			fprintf(stderr, "Couldn't convert to RSA style key.\n");
-			goto fail;
-		}
-	} else {
-		/* Read the pubkey in .PEM format. */
-		if (!(pubkey = PEM_read_RSA_PUBKEY(fp, NULL, NULL, NULL))) {
-			fprintf(stderr, "Couldn't read public key file.\n");
-			goto fail;
-		}
-	}
-
-	if (check(pubkey)) {
-		output(pubkey);
-	}
-
- fail:
-	X509_free(cert);
-	RSA_free(pubkey);
-	fclose(fp);
-
-	return 0;
-}