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Diffstat (limited to 'arch/mips/cavium-octeon/crypto/octeon-sha512.c')
-rw-r--r--arch/mips/cavium-octeon/crypto/octeon-sha512.c238
1 files changed, 0 insertions, 238 deletions
diff --git a/arch/mips/cavium-octeon/crypto/octeon-sha512.c b/arch/mips/cavium-octeon/crypto/octeon-sha512.c
deleted file mode 100644
index 2dee9354e33f..000000000000
--- a/arch/mips/cavium-octeon/crypto/octeon-sha512.c
+++ /dev/null
@@ -1,238 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Cryptographic API.
- *
- * SHA-512 and SHA-384 Secure Hash Algorithm.
- *
- * Adapted for OCTEON by Aaro Koskinen <aaro.koskinen@iki.fi>.
- *
- * Based on crypto/sha512_generic.c, which is:
- *
- * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
- * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
- * Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
- */
-
-#include <linux/mm.h>
-#include <crypto/sha2.h>
-#include <crypto/sha512_base.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/module.h>
-#include <asm/byteorder.h>
-#include <asm/octeon/octeon.h>
-#include <crypto/internal/hash.h>
-
-#include "octeon-crypto.h"
-
-/*
- * We pass everything as 64-bit. OCTEON can handle misaligned data.
- */
-
-static void octeon_sha512_store_hash(struct sha512_state *sctx)
-{
- write_octeon_64bit_hash_sha512(sctx->state[0], 0);
- write_octeon_64bit_hash_sha512(sctx->state[1], 1);
- write_octeon_64bit_hash_sha512(sctx->state[2], 2);
- write_octeon_64bit_hash_sha512(sctx->state[3], 3);
- write_octeon_64bit_hash_sha512(sctx->state[4], 4);
- write_octeon_64bit_hash_sha512(sctx->state[5], 5);
- write_octeon_64bit_hash_sha512(sctx->state[6], 6);
- write_octeon_64bit_hash_sha512(sctx->state[7], 7);
-}
-
-static void octeon_sha512_read_hash(struct sha512_state *sctx)
-{
- sctx->state[0] = read_octeon_64bit_hash_sha512(0);
- sctx->state[1] = read_octeon_64bit_hash_sha512(1);
- sctx->state[2] = read_octeon_64bit_hash_sha512(2);
- sctx->state[3] = read_octeon_64bit_hash_sha512(3);
- sctx->state[4] = read_octeon_64bit_hash_sha512(4);
- sctx->state[5] = read_octeon_64bit_hash_sha512(5);
- sctx->state[6] = read_octeon_64bit_hash_sha512(6);
- sctx->state[7] = read_octeon_64bit_hash_sha512(7);
-}
-
-static void octeon_sha512_transform(const void *_block)
-{
- const u64 *block = _block;
-
- write_octeon_64bit_block_sha512(block[0], 0);
- write_octeon_64bit_block_sha512(block[1], 1);
- write_octeon_64bit_block_sha512(block[2], 2);
- write_octeon_64bit_block_sha512(block[3], 3);
- write_octeon_64bit_block_sha512(block[4], 4);
- write_octeon_64bit_block_sha512(block[5], 5);
- write_octeon_64bit_block_sha512(block[6], 6);
- write_octeon_64bit_block_sha512(block[7], 7);
- write_octeon_64bit_block_sha512(block[8], 8);
- write_octeon_64bit_block_sha512(block[9], 9);
- write_octeon_64bit_block_sha512(block[10], 10);
- write_octeon_64bit_block_sha512(block[11], 11);
- write_octeon_64bit_block_sha512(block[12], 12);
- write_octeon_64bit_block_sha512(block[13], 13);
- write_octeon_64bit_block_sha512(block[14], 14);
- octeon_sha512_start(block[15]);
-}
-
-static void __octeon_sha512_update(struct sha512_state *sctx, const u8 *data,
- unsigned int len)
-{
- unsigned int part_len;
- unsigned int index;
- unsigned int i;
-
- /* Compute number of bytes mod 128. */
- index = sctx->count[0] % SHA512_BLOCK_SIZE;
-
- /* Update number of bytes. */
- if ((sctx->count[0] += len) < len)
- sctx->count[1]++;
-
- part_len = SHA512_BLOCK_SIZE - index;
-
- /* Transform as many times as possible. */
- if (len >= part_len) {
- memcpy(&sctx->buf[index], data, part_len);
- octeon_sha512_transform(sctx->buf);
-
- for (i = part_len; i + SHA512_BLOCK_SIZE <= len;
- i += SHA512_BLOCK_SIZE)
- octeon_sha512_transform(&data[i]);
-
- index = 0;
- } else {
- i = 0;
- }
-
- /* Buffer remaining input. */
- memcpy(&sctx->buf[index], &data[i], len - i);
-}
-
-static int octeon_sha512_update(struct shash_desc *desc, const u8 *data,
- unsigned int len)
-{
- struct sha512_state *sctx = shash_desc_ctx(desc);
- struct octeon_cop2_state state;
- unsigned long flags;
-
- /*
- * Small updates never reach the crypto engine, so the generic sha512 is
- * faster because of the heavyweight octeon_crypto_enable() /
- * octeon_crypto_disable().
- */
- if ((sctx->count[0] % SHA512_BLOCK_SIZE) + len < SHA512_BLOCK_SIZE)
- return crypto_sha512_update(desc, data, len);
-
- flags = octeon_crypto_enable(&state);
- octeon_sha512_store_hash(sctx);
-
- __octeon_sha512_update(sctx, data, len);
-
- octeon_sha512_read_hash(sctx);
- octeon_crypto_disable(&state, flags);
-
- return 0;
-}
-
-static int octeon_sha512_final(struct shash_desc *desc, u8 *hash)
-{
- struct sha512_state *sctx = shash_desc_ctx(desc);
- static u8 padding[128] = { 0x80, };
- struct octeon_cop2_state state;
- __be64 *dst = (__be64 *)hash;
- unsigned int pad_len;
- unsigned long flags;
- unsigned int index;
- __be64 bits[2];
- int i;
-
- /* Save number of bits. */
- bits[1] = cpu_to_be64(sctx->count[0] << 3);
- bits[0] = cpu_to_be64(sctx->count[1] << 3 | sctx->count[0] >> 61);
-
- /* Pad out to 112 mod 128. */
- index = sctx->count[0] & 0x7f;
- pad_len = (index < 112) ? (112 - index) : ((128+112) - index);
-
- flags = octeon_crypto_enable(&state);
- octeon_sha512_store_hash(sctx);
-
- __octeon_sha512_update(sctx, padding, pad_len);
-
- /* Append length (before padding). */
- __octeon_sha512_update(sctx, (const u8 *)bits, sizeof(bits));
-
- octeon_sha512_read_hash(sctx);
- octeon_crypto_disable(&state, flags);
-
- /* Store state in digest. */
- for (i = 0; i < 8; i++)
- dst[i] = cpu_to_be64(sctx->state[i]);
-
- /* Zeroize sensitive information. */
- memset(sctx, 0, sizeof(struct sha512_state));
-
- return 0;
-}
-
-static int octeon_sha384_final(struct shash_desc *desc, u8 *hash)
-{
- u8 D[64];
-
- octeon_sha512_final(desc, D);
-
- memcpy(hash, D, 48);
- memzero_explicit(D, 64);
-
- return 0;
-}
-
-static struct shash_alg octeon_sha512_algs[2] = { {
- .digestsize = SHA512_DIGEST_SIZE,
- .init = sha512_base_init,
- .update = octeon_sha512_update,
- .final = octeon_sha512_final,
- .descsize = sizeof(struct sha512_state),
- .base = {
- .cra_name = "sha512",
- .cra_driver_name= "octeon-sha512",
- .cra_priority = OCTEON_CR_OPCODE_PRIORITY,
- .cra_blocksize = SHA512_BLOCK_SIZE,
- .cra_module = THIS_MODULE,
- }
-}, {
- .digestsize = SHA384_DIGEST_SIZE,
- .init = sha384_base_init,
- .update = octeon_sha512_update,
- .final = octeon_sha384_final,
- .descsize = sizeof(struct sha512_state),
- .base = {
- .cra_name = "sha384",
- .cra_driver_name= "octeon-sha384",
- .cra_priority = OCTEON_CR_OPCODE_PRIORITY,
- .cra_blocksize = SHA384_BLOCK_SIZE,
- .cra_module = THIS_MODULE,
- }
-} };
-
-static int __init octeon_sha512_mod_init(void)
-{
- if (!octeon_has_crypto())
- return -ENOTSUPP;
- return crypto_register_shashes(octeon_sha512_algs,
- ARRAY_SIZE(octeon_sha512_algs));
-}
-
-static void __exit octeon_sha512_mod_fini(void)
-{
- crypto_unregister_shashes(octeon_sha512_algs,
- ARRAY_SIZE(octeon_sha512_algs));
-}
-
-module_init(octeon_sha512_mod_init);
-module_exit(octeon_sha512_mod_fini);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms (OCTEON)");
-MODULE_AUTHOR("Aaro Koskinen <aaro.koskinen@iki.fi>");
generated by cgit (git 2.34.1) at 2025-07-30 18:23:39 +0000