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/sha2.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(struct sha512_state *state, 29 u8 const *src, int blocks); 30 31 int sha512_arm_update(struct shash_desc *desc, const u8 *data, 32 unsigned int len) 33 { 34 return sha512_base_do_update(desc, data, len, 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, sha512_block_data_order); 40 return sha512_base_finish(desc, out); 41 } 42 43 int sha512_arm_finup(struct shash_desc *desc, const u8 *data, 44 unsigned int len, u8 *out) 45 { 46 sha512_base_do_update(desc, data, len, sha512_block_data_order); 47 return sha512_arm_final(desc, out); 48 } 49 50 static struct shash_alg sha512_arm_algs[] = { { 51 .init = sha384_base_init, 52 .update = sha512_arm_update, 53 .final = sha512_arm_final, 54 .finup = sha512_arm_finup, 55 .descsize = sizeof(struct sha512_state), 56 .digestsize = SHA384_DIGEST_SIZE, 57 .base = { 58 .cra_name = "sha384", 59 .cra_driver_name = "sha384-arm", 60 .cra_priority = 250, 61 .cra_blocksize = SHA512_BLOCK_SIZE, 62 .cra_module = THIS_MODULE, 63 } 64 }, { 65 .init = sha512_base_init, 66 .update = sha512_arm_update, 67 .final = sha512_arm_final, 68 .finup = sha512_arm_finup, 69 .descsize = sizeof(struct sha512_state), 70 .digestsize = SHA512_DIGEST_SIZE, 71 .base = { 72 .cra_name = "sha512", 73 .cra_driver_name = "sha512-arm", 74 .cra_priority = 250, 75 .cra_blocksize = SHA512_BLOCK_SIZE, 76 .cra_module = THIS_MODULE, 77 } 78 } }; 79 80 static int __init sha512_arm_mod_init(void) 81 { 82 int err; 83 84 err = crypto_register_shashes(sha512_arm_algs, 85 ARRAY_SIZE(sha512_arm_algs)); 86 if (err) 87 return err; 88 89 if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) { 90 err = crypto_register_shashes(sha512_neon_algs, 91 ARRAY_SIZE(sha512_neon_algs)); 92 if (err) 93 goto err_unregister; 94 } 95 return 0; 96 97 err_unregister: 98 crypto_unregister_shashes(sha512_arm_algs, 99 ARRAY_SIZE(sha512_arm_algs)); 100 101 return err; 102 } 103 104 static void __exit sha512_arm_mod_fini(void) 105 { 106 crypto_unregister_shashes(sha512_arm_algs, 107 ARRAY_SIZE(sha512_arm_algs)); 108 if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) 109 crypto_unregister_shashes(sha512_neon_algs, 110 ARRAY_SIZE(sha512_neon_algs)); 111 } 112 113 module_init(sha512_arm_mod_init); 114 module_exit(sha512_arm_mod_fini); 115