1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * sha512-glue.c - accelerated SHA-384/512 for ARM 4 * 5 * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> 6 */ 7 8 #include <crypto/internal/hash.h> 9 #include <crypto/sha.h> 10 #include <crypto/sha512_base.h> 11 #include <linux/crypto.h> 12 #include <linux/module.h> 13 14 #include <asm/hwcap.h> 15 #include <asm/neon.h> 16 17 #include "sha512.h" 18 19 MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM"); 20 MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); 21 MODULE_LICENSE("GPL v2"); 22 23 MODULE_ALIAS_CRYPTO("sha384"); 24 MODULE_ALIAS_CRYPTO("sha512"); 25 MODULE_ALIAS_CRYPTO("sha384-arm"); 26 MODULE_ALIAS_CRYPTO("sha512-arm"); 27 28 asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks); 29 30 int sha512_arm_update(struct shash_desc *desc, const u8 *data, 31 unsigned int len) 32 { 33 return sha512_base_do_update(desc, data, len, 34 (sha512_block_fn *)sha512_block_data_order); 35 } 36 37 static int sha512_arm_final(struct shash_desc *desc, u8 *out) 38 { 39 sha512_base_do_finalize(desc, 40 (sha512_block_fn *)sha512_block_data_order); 41 return sha512_base_finish(desc, out); 42 } 43 44 int sha512_arm_finup(struct shash_desc *desc, const u8 *data, 45 unsigned int len, u8 *out) 46 { 47 sha512_base_do_update(desc, data, len, 48 (sha512_block_fn *)sha512_block_data_order); 49 return sha512_arm_final(desc, out); 50 } 51 52 static struct shash_alg sha512_arm_algs[] = { { 53 .init = sha384_base_init, 54 .update = sha512_arm_update, 55 .final = sha512_arm_final, 56 .finup = sha512_arm_finup, 57 .descsize = sizeof(struct sha512_state), 58 .digestsize = SHA384_DIGEST_SIZE, 59 .base = { 60 .cra_name = "sha384", 61 .cra_driver_name = "sha384-arm", 62 .cra_priority = 250, 63 .cra_blocksize = SHA512_BLOCK_SIZE, 64 .cra_module = THIS_MODULE, 65 } 66 }, { 67 .init = sha512_base_init, 68 .update = sha512_arm_update, 69 .final = sha512_arm_final, 70 .finup = sha512_arm_finup, 71 .descsize = sizeof(struct sha512_state), 72 .digestsize = SHA512_DIGEST_SIZE, 73 .base = { 74 .cra_name = "sha512", 75 .cra_driver_name = "sha512-arm", 76 .cra_priority = 250, 77 .cra_blocksize = SHA512_BLOCK_SIZE, 78 .cra_module = THIS_MODULE, 79 } 80 } }; 81 82 static int __init sha512_arm_mod_init(void) 83 { 84 int err; 85 86 err = crypto_register_shashes(sha512_arm_algs, 87 ARRAY_SIZE(sha512_arm_algs)); 88 if (err) 89 return err; 90 91 if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) { 92 err = crypto_register_shashes(sha512_neon_algs, 93 ARRAY_SIZE(sha512_neon_algs)); 94 if (err) 95 goto err_unregister; 96 } 97 return 0; 98 99 err_unregister: 100 crypto_unregister_shashes(sha512_arm_algs, 101 ARRAY_SIZE(sha512_arm_algs)); 102 103 return err; 104 } 105 106 static void __exit sha512_arm_mod_fini(void) 107 { 108 crypto_unregister_shashes(sha512_arm_algs, 109 ARRAY_SIZE(sha512_arm_algs)); 110 if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) 111 crypto_unregister_shashes(sha512_neon_algs, 112 ARRAY_SIZE(sha512_neon_algs)); 113 } 114 115 module_init(sha512_arm_mod_init); 116 module_exit(sha512_arm_mod_fini); 117