1 /* 2 * sha512-glue.c - accelerated SHA-384/512 for ARM 3 * 4 * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #include <crypto/internal/hash.h> 12 #include <crypto/sha.h> 13 #include <crypto/sha512_base.h> 14 #include <linux/crypto.h> 15 #include <linux/module.h> 16 17 #include <asm/hwcap.h> 18 #include <asm/neon.h> 19 20 #include "sha512.h" 21 22 MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM"); 23 MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); 24 MODULE_LICENSE("GPL v2"); 25 26 MODULE_ALIAS_CRYPTO("sha384"); 27 MODULE_ALIAS_CRYPTO("sha512"); 28 MODULE_ALIAS_CRYPTO("sha384-arm"); 29 MODULE_ALIAS_CRYPTO("sha512-arm"); 30 31 asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks); 32 33 int sha512_arm_update(struct shash_desc *desc, const u8 *data, 34 unsigned int len) 35 { 36 return sha512_base_do_update(desc, data, len, 37 (sha512_block_fn *)sha512_block_data_order); 38 } 39 40 int sha512_arm_final(struct shash_desc *desc, u8 *out) 41 { 42 sha512_base_do_finalize(desc, 43 (sha512_block_fn *)sha512_block_data_order); 44 return sha512_base_finish(desc, out); 45 } 46 47 int sha512_arm_finup(struct shash_desc *desc, const u8 *data, 48 unsigned int len, u8 *out) 49 { 50 sha512_base_do_update(desc, data, len, 51 (sha512_block_fn *)sha512_block_data_order); 52 return sha512_arm_final(desc, out); 53 } 54 55 static struct shash_alg sha512_arm_algs[] = { { 56 .init = sha384_base_init, 57 .update = sha512_arm_update, 58 .final = sha512_arm_final, 59 .finup = sha512_arm_finup, 60 .descsize = sizeof(struct sha512_state), 61 .digestsize = SHA384_DIGEST_SIZE, 62 .base = { 63 .cra_name = "sha384", 64 .cra_driver_name = "sha384-arm", 65 .cra_priority = 250, 66 .cra_blocksize = SHA512_BLOCK_SIZE, 67 .cra_module = THIS_MODULE, 68 } 69 }, { 70 .init = sha512_base_init, 71 .update = sha512_arm_update, 72 .final = sha512_arm_final, 73 .finup = sha512_arm_finup, 74 .descsize = sizeof(struct sha512_state), 75 .digestsize = SHA512_DIGEST_SIZE, 76 .base = { 77 .cra_name = "sha512", 78 .cra_driver_name = "sha512-arm", 79 .cra_priority = 250, 80 .cra_blocksize = SHA512_BLOCK_SIZE, 81 .cra_module = THIS_MODULE, 82 } 83 } }; 84 85 static int __init sha512_arm_mod_init(void) 86 { 87 int err; 88 89 err = crypto_register_shashes(sha512_arm_algs, 90 ARRAY_SIZE(sha512_arm_algs)); 91 if (err) 92 return err; 93 94 if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) { 95 err = crypto_register_shashes(sha512_neon_algs, 96 ARRAY_SIZE(sha512_neon_algs)); 97 if (err) 98 goto err_unregister; 99 } 100 return 0; 101 102 err_unregister: 103 crypto_unregister_shashes(sha512_arm_algs, 104 ARRAY_SIZE(sha512_arm_algs)); 105 106 return err; 107 } 108 109 static void __exit sha512_arm_mod_fini(void) 110 { 111 crypto_unregister_shashes(sha512_arm_algs, 112 ARRAY_SIZE(sha512_arm_algs)); 113 if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) 114 crypto_unregister_shashes(sha512_neon_algs, 115 ARRAY_SIZE(sha512_neon_algs)); 116 } 117 118 module_init(sha512_arm_mod_init); 119 module_exit(sha512_arm_mod_fini); 120