1 files changed, 0 insertions, 137 deletions
diff --git a/arch/arm/cpu/tegra20-common/crypto.c b/arch/arm/cpu/tegra20-common/crypto.c
deleted file mode 100644
index ec95d7ceb1..0000000000
--- a/arch/arm/cpu/tegra20-common/crypto.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * Copyright (c) 2011 The Chromium OS Authors.
- * (C) Copyright 2010 - 2011 NVIDIA Corporation <www.nvidia.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/errno.h>
-#include "crypto.h"
-#include "aes.h"
-
-static u8 zero_key[16];
-
-#define AES_CMAC_CONST_RB 0x87  /* from RFC 4493, Figure 2.2 */
-
-enum security_op {
-	SECURITY_SIGN		= 1 << 0,	/* Sign the data */
-	SECURITY_ENCRYPT	= 1 << 1,	/* Encrypt the data */
-};
-
-/**
- * Shift a vector left by one bit
- *
- * \param in	Input vector
- * \param out	Output vector
- * \param size	Length of vector in bytes
- */
-static void left_shift_vector(u8 *in, u8 *out, int size)
-{
-	int carry = 0;
-	int i;
-
-	for (i = size - 1; i >= 0; i--) {
-		out[i] = (in[i] << 1) | carry;
-		carry = in[i] >> 7;	/* get most significant bit */
-	}
-}
-
-/**
- * Sign a block of data, putting the result into dst.
- *
- * \param key			Input AES key, length AES_KEY_LENGTH
- * \param key_schedule		Expanded key to use
- * \param src			Source data of length 'num_aes_blocks' blocks
- * \param dst			Destination buffer, length AES_KEY_LENGTH
- * \param num_aes_blocks	Number of AES blocks to encrypt
- */
-static void sign_object(u8 *key, u8 *key_schedule, u8 *src, u8 *dst,
-			u32 num_aes_blocks)
-{
-	u8 tmp_data[AES_KEY_LENGTH];
-	u8 left[AES_KEY_LENGTH];
-	u8 k1[AES_KEY_LENGTH];
-	u8 *cbc_chain_data;
-	unsigned i;
-
-	cbc_chain_data = zero_key;	/* Convenient array of 0's for IV */
-
-	/* compute K1 constant needed by AES-CMAC calculation */
-	for (i = 0; i < AES_KEY_LENGTH; i++)
-		tmp_data[i] = 0;
-
-	aes_cbc_encrypt_blocks(key_schedule, tmp_data, left, 1);
-
-	left_shift_vector(left, k1, sizeof(left));
-
-	if ((left[0] >> 7) != 0) /* get MSB of L */
-		k1[AES_KEY_LENGTH-1] ^= AES_CMAC_CONST_RB;
-
-	/* compute the AES-CMAC value */
-	for (i = 0; i < num_aes_blocks; i++) {
-		/* Apply the chain data */
-		aes_apply_cbc_chain_data(cbc_chain_data, src, tmp_data);
-
-		/* for the final block, XOR K1 into the IV */
-		if (i == num_aes_blocks - 1)
-			aes_apply_cbc_chain_data(tmp_data, k1, tmp_data);
-
-		/* encrypt the AES block */
-		aes_encrypt(tmp_data, key_schedule, dst);
-
-		debug("sign_obj: block %d of %d\n", i, num_aes_blocks);
-
-		/* Update pointers for next loop. */
-		cbc_chain_data = dst;
-		src += AES_KEY_LENGTH;
-	}
-}
-
-/**
- * Encrypt and sign a block of data (depending on security mode).
- *
- * \param key		Input AES key, length AES_KEY_LENGTH
- * \param oper		Security operations mask to perform (enum security_op)
- * \param src		Source data
- * \param length	Size of source data
- * \param sig_dst	Destination address for signature, AES_KEY_LENGTH bytes
- */
-static int encrypt_and_sign(u8 *key, enum security_op oper, u8 *src,
-			    u32 length, u8 *sig_dst)
-{
-	u32 num_aes_blocks;
-	u8 key_schedule[AES_EXPAND_KEY_LENGTH];
-
-	debug("encrypt_and_sign: length = %d\n", length);
-
-	/*
-	 * The only need for a key is for signing/checksum purposes, so
-	 * if not encrypting, expand a key of 0s.
-	 */
-	aes_expand_key(oper & SECURITY_ENCRYPT ? key : zero_key, key_schedule);
-
-	num_aes_blocks = (length + AES_KEY_LENGTH - 1) / AES_KEY_LENGTH;
-
-	if (oper & SECURITY_ENCRYPT) {
-		/* Perform this in place, resulting in src being encrypted. */
-		debug("encrypt_and_sign: begin encryption\n");
-		aes_cbc_encrypt_blocks(key_schedule, src, src, num_aes_blocks);
-		debug("encrypt_and_sign: end encryption\n");
-	}
-
-	if (oper & SECURITY_SIGN) {
-		/* encrypt the data, overwriting the result in signature. */
-		debug("encrypt_and_sign: begin signing\n");
-		sign_object(key, key_schedule, src, sig_dst, num_aes_blocks);
-		debug("encrypt_and_sign: end signing\n");
-	}
-
-	return 0;
-}
-
-int sign_data_block(u8 *source, unsigned length, u8 *signature)
-{
-	return encrypt_and_sign(zero_key, SECURITY_SIGN, source,
-				length, signature);
-}