From 632dcef5bb44c1548de16e2c72bb5037a895d00f Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Sat, 12 Apr 2025 21:54:18 -0700 Subject: [PATCH] crypto: mips/poly1305 - remove redundant shash algorithm Since crypto/poly1305.c now registers a poly1305-$(ARCH) shash algorithm that uses the architecture's Poly1305 library functions, individual architectures no longer need to do the same. Therefore, remove the redundant shash algorithm from the arch-specific code and leave just the library functions there. Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- arch/mips/crypto/Kconfig | 5 -- arch/mips/crypto/poly1305-glue.c | 120 +------------------------------ 2 files changed, 2 insertions(+), 123 deletions(-) diff --git a/arch/mips/crypto/Kconfig b/arch/mips/crypto/Kconfig index 9892391f74ac..8283664a1f24 100644 --- a/arch/mips/crypto/Kconfig +++ b/arch/mips/crypto/Kconfig @@ -4,13 +4,8 @@ menu "Accelerated Cryptographic Algorithms for CPU (mips)" config CRYPTO_POLY1305_MIPS tristate - select CRYPTO_HASH select CRYPTO_ARCH_HAVE_LIB_POLY1305 default CRYPTO_LIB_POLY1305_INTERNAL - help - Poly1305 authenticator algorithm (RFC7539) - - Architecture: mips config CRYPTO_MD5_OCTEON tristate "Digests: MD5 (OCTEON)" diff --git a/arch/mips/crypto/poly1305-glue.c b/arch/mips/crypto/poly1305-glue.c index 9eee71dc0b99..576e7a58e0b1 100644 --- a/arch/mips/crypto/poly1305-glue.c +++ b/arch/mips/crypto/poly1305-glue.c @@ -5,13 +5,10 @@ * Copyright (C) 2019 Linaro Ltd. */ -#include -#include -#include -#include +#include #include -#include #include +#include asmlinkage void poly1305_init_mips(void *state, const u8 *key); asmlinkage void poly1305_blocks_mips(void *state, const u8 *src, u32 len, u32 hibit); @@ -28,77 +25,6 @@ void poly1305_init_arch(struct poly1305_desc_ctx *dctx, const u8 key[POLY1305_KE } EXPORT_SYMBOL(poly1305_init_arch); -static int mips_poly1305_init(struct shash_desc *desc) -{ - struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc); - - dctx->buflen = 0; - dctx->rset = 0; - dctx->sset = false; - - return 0; -} - -static void mips_poly1305_blocks(struct poly1305_desc_ctx *dctx, const u8 *src, - u32 len, u32 hibit) -{ - if (unlikely(!dctx->sset)) { - if (!dctx->rset) { - poly1305_init_mips(&dctx->h, src); - src += POLY1305_BLOCK_SIZE; - len -= POLY1305_BLOCK_SIZE; - dctx->rset = 1; - } - if (len >= POLY1305_BLOCK_SIZE) { - dctx->s[0] = get_unaligned_le32(src + 0); - dctx->s[1] = get_unaligned_le32(src + 4); - dctx->s[2] = get_unaligned_le32(src + 8); - dctx->s[3] = get_unaligned_le32(src + 12); - src += POLY1305_BLOCK_SIZE; - len -= POLY1305_BLOCK_SIZE; - dctx->sset = true; - } - if (len < POLY1305_BLOCK_SIZE) - return; - } - - len &= ~(POLY1305_BLOCK_SIZE - 1); - - poly1305_blocks_mips(&dctx->h, src, len, hibit); -} - -static int mips_poly1305_update(struct shash_desc *desc, const u8 *src, - unsigned int len) -{ - struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc); - - if (unlikely(dctx->buflen)) { - u32 bytes = min(len, POLY1305_BLOCK_SIZE - dctx->buflen); - - memcpy(dctx->buf + dctx->buflen, src, bytes); - src += bytes; - len -= bytes; - dctx->buflen += bytes; - - if (dctx->buflen == POLY1305_BLOCK_SIZE) { - mips_poly1305_blocks(dctx, dctx->buf, POLY1305_BLOCK_SIZE, 1); - dctx->buflen = 0; - } - } - - if (likely(len >= POLY1305_BLOCK_SIZE)) { - mips_poly1305_blocks(dctx, src, len, 1); - src += round_down(len, POLY1305_BLOCK_SIZE); - len %= POLY1305_BLOCK_SIZE; - } - - if (unlikely(len)) { - dctx->buflen = len; - memcpy(dctx->buf, src, len); - } - return 0; -} - void poly1305_update_arch(struct poly1305_desc_ctx *dctx, const u8 *src, unsigned int nbytes) { @@ -146,53 +72,11 @@ void poly1305_final_arch(struct poly1305_desc_ctx *dctx, u8 *dst) } EXPORT_SYMBOL(poly1305_final_arch); -static int mips_poly1305_final(struct shash_desc *desc, u8 *dst) -{ - struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc); - - if (unlikely(!dctx->sset)) - return -ENOKEY; - - poly1305_final_arch(dctx, dst); - return 0; -} - -static struct shash_alg mips_poly1305_alg = { - .init = mips_poly1305_init, - .update = mips_poly1305_update, - .final = mips_poly1305_final, - .digestsize = POLY1305_DIGEST_SIZE, - .descsize = sizeof(struct poly1305_desc_ctx), - - .base.cra_name = "poly1305", - .base.cra_driver_name = "poly1305-mips-old", - .base.cra_priority = 200, - .base.cra_blocksize = POLY1305_BLOCK_SIZE, - .base.cra_module = THIS_MODULE, -}; - bool poly1305_is_arch_optimized(void) { return true; } EXPORT_SYMBOL(poly1305_is_arch_optimized); -static int __init mips_poly1305_mod_init(void) -{ - return IS_REACHABLE(CONFIG_CRYPTO_HASH) ? - crypto_register_shash(&mips_poly1305_alg) : 0; -} - -static void __exit mips_poly1305_mod_exit(void) -{ - if (IS_REACHABLE(CONFIG_CRYPTO_HASH)) - crypto_unregister_shash(&mips_poly1305_alg); -} - -arch_initcall(mips_poly1305_mod_init); -module_exit(mips_poly1305_mod_exit); - MODULE_DESCRIPTION("Poly1305 transform (MIPS accelerated"); MODULE_LICENSE("GPL v2"); -MODULE_ALIAS_CRYPTO("poly1305"); -MODULE_ALIAS_CRYPTO("poly1305-mips"); -- 2.50.1