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Diffstat (limited to 'arch/arm/crypto/sha512-glue.c')
-rw-r--r-- | arch/arm/crypto/sha512-glue.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/arch/arm/crypto/sha512-glue.c b/arch/arm/crypto/sha512-glue.c new file mode 100644 index 000000000..0635a65aa --- /dev/null +++ b/arch/arm/crypto/sha512-glue.c @@ -0,0 +1,116 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * sha512-glue.c - accelerated SHA-384/512 for ARM + * + * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> + */ + +#include <crypto/internal/hash.h> +#include <crypto/sha2.h> +#include <crypto/sha512_base.h> +#include <linux/crypto.h> +#include <linux/module.h> + +#include <asm/hwcap.h> +#include <asm/neon.h> + +#include "sha512.h" + +MODULE_DESCRIPTION("Accelerated SHA-384/SHA-512 secure hash for ARM"); +MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); +MODULE_LICENSE("GPL v2"); + +MODULE_ALIAS_CRYPTO("sha384"); +MODULE_ALIAS_CRYPTO("sha512"); +MODULE_ALIAS_CRYPTO("sha384-arm"); +MODULE_ALIAS_CRYPTO("sha512-arm"); + +asmlinkage void sha512_block_data_order(u64 *state, u8 const *src, int blocks); + +int sha512_arm_update(struct shash_desc *desc, const u8 *data, + unsigned int len) +{ + return sha512_base_do_update(desc, data, len, + (sha512_block_fn *)sha512_block_data_order); +} + +static int sha512_arm_final(struct shash_desc *desc, u8 *out) +{ + sha512_base_do_finalize(desc, + (sha512_block_fn *)sha512_block_data_order); + return sha512_base_finish(desc, out); +} + +int sha512_arm_finup(struct shash_desc *desc, const u8 *data, + unsigned int len, u8 *out) +{ + sha512_base_do_update(desc, data, len, + (sha512_block_fn *)sha512_block_data_order); + return sha512_arm_final(desc, out); +} + +static struct shash_alg sha512_arm_algs[] = { { + .init = sha384_base_init, + .update = sha512_arm_update, + .final = sha512_arm_final, + .finup = sha512_arm_finup, + .descsize = sizeof(struct sha512_state), + .digestsize = SHA384_DIGEST_SIZE, + .base = { + .cra_name = "sha384", + .cra_driver_name = "sha384-arm", + .cra_priority = 250, + .cra_blocksize = SHA512_BLOCK_SIZE, + .cra_module = THIS_MODULE, + } +}, { + .init = sha512_base_init, + .update = sha512_arm_update, + .final = sha512_arm_final, + .finup = sha512_arm_finup, + .descsize = sizeof(struct sha512_state), + .digestsize = SHA512_DIGEST_SIZE, + .base = { + .cra_name = "sha512", + .cra_driver_name = "sha512-arm", + .cra_priority = 250, + .cra_blocksize = SHA512_BLOCK_SIZE, + .cra_module = THIS_MODULE, + } +} }; + +static int __init sha512_arm_mod_init(void) +{ + int err; + + err = crypto_register_shashes(sha512_arm_algs, + ARRAY_SIZE(sha512_arm_algs)); + if (err) + return err; + + if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) { + err = crypto_register_shashes(sha512_neon_algs, + ARRAY_SIZE(sha512_neon_algs)); + if (err) + goto err_unregister; + } + return 0; + +err_unregister: + crypto_unregister_shashes(sha512_arm_algs, + ARRAY_SIZE(sha512_arm_algs)); + + return err; +} + +static void __exit sha512_arm_mod_fini(void) +{ + crypto_unregister_shashes(sha512_arm_algs, + ARRAY_SIZE(sha512_arm_algs)); + if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && cpu_has_neon()) + crypto_unregister_shashes(sha512_neon_algs, + ARRAY_SIZE(sha512_neon_algs)); +} + +module_init(sha512_arm_mod_init); +module_exit(sha512_arm_mod_fini); |