arm/crypto/sha512-glue.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * sha512-glue.c - accelerated SHA-384/512 for ARM
0004  *
0005  * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
0006  */
0007
0008 #include <crypto/internal/hash.h>
0009 #include <crypto/sha2.h>
0010 #include <crypto/sha512_base.h>
0011 #include <linux/crypto.h>
0012 #include <linux/module.h>
0013
0014 #include <asm/hwcap.h>
0015 #include <asm/neon.h>
0016
0017 #include "sha512.h"
0018
0019 MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM");
0020 MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
0021 MODULE_LICENSE("GPL v2");
0022
0023 MODULE_ALIAS_CRYPTO("sha384");
0024 MODULE_ALIAS_CRYPTO("sha512");
0025 MODULE_ALIAS_CRYPTO("sha384-arm");
0026 MODULE_ALIAS_CRYPTO("sha512-arm");
0027
0028 asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks);
0029
0030 int sha512_arm_update(struct shash_desc *desc, const u8 *data,
0031               unsigned int len)
0032 {
0033     return sha512_base_do_update(desc, data, len,
0034         (sha512_block_fn *)sha512_block_data_order);
0035 }
0036
0037 static int sha512_arm_final(struct shash_desc *desc, u8 *out)
0038 {
0039     sha512_base_do_finalize(desc,
0040         (sha512_block_fn *)sha512_block_data_order);
0041     return sha512_base_finish(desc, out);
0042 }
0043
0044 int sha512_arm_finup(struct shash_desc *desc, const u8 *data,
0045              unsigned int len, u8 *out)
0046 {
0047     sha512_base_do_update(desc, data, len,
0048         (sha512_block_fn *)sha512_block_data_order);
0049     return sha512_arm_final(desc, out);
0050 }
0051
0052 static struct shash_alg sha512_arm_algs[] = { {
0053     .init           = sha384_base_init,
0054     .update         = sha512_arm_update,
0055     .final          = sha512_arm_final,
0056     .finup          = sha512_arm_finup,
0057     .descsize       = sizeof(struct sha512_state),
0058     .digestsize     = SHA384_DIGEST_SIZE,
0059     .base           = {
0060         .cra_name       = "sha384",
0061         .cra_driver_name    = "sha384-arm",
0062         .cra_priority       = 250,
0063         .cra_blocksize      = SHA512_BLOCK_SIZE,
0064         .cra_module     = THIS_MODULE,
0065     }
0066 },  {
0067     .init           = sha512_base_init,
0068     .update         = sha512_arm_update,
0069     .final          = sha512_arm_final,
0070     .finup          = sha512_arm_finup,
0071     .descsize       = sizeof(struct sha512_state),
0072     .digestsize     = SHA512_DIGEST_SIZE,
0073     .base           = {
0074         .cra_name       = "sha512",
0075         .cra_driver_name    = "sha512-arm",
0076         .cra_priority       = 250,
0077         .cra_blocksize      = SHA512_BLOCK_SIZE,
0078         .cra_module     = THIS_MODULE,
0079     }
0080 } };
0081
0082 static int __init sha512_arm_mod_init(void)
0083 {
0084     int err;
0085
0086     err = crypto_register_shashes(sha512_arm_algs,
0087                       ARRAY_SIZE(sha512_arm_algs));
0088     if (err)
0089         return err;
0090
0091     if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) {
0092         err = crypto_register_shashes(sha512_neon_algs,
0093                           ARRAY_SIZE(sha512_neon_algs));
0094         if (err)
0095             goto err_unregister;
0096     }
0097     return 0;
0098
0099 err_unregister:
0100     crypto_unregister_shashes(sha512_arm_algs,
0101                   ARRAY_SIZE(sha512_arm_algs));
0102
0103     return err;
0104 }
0105
0106 static void __exit sha512_arm_mod_fini(void)
0107 {
0108     crypto_unregister_shashes(sha512_arm_algs,
0109                   ARRAY_SIZE(sha512_arm_algs));
0110     if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon())
0111         crypto_unregister_shashes(sha512_neon_algs,
0112                       ARRAY_SIZE(sha512_neon_algs));
0113 }
0114
0115 module_init(sha512_arm_mod_init);
0116 module_exit(sha512_arm_mod_fini);