diff options
Diffstat (limited to 'arch/mips/crypto/poly1305-glue.c')
| -rw-r--r-- | arch/mips/crypto/poly1305-glue.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/arch/mips/crypto/poly1305-glue.c b/arch/mips/crypto/poly1305-glue.c deleted file mode 100644 index c03ad0bbe69c..000000000000 --- a/arch/mips/crypto/poly1305-glue.c +++ /dev/null @@ -1,192 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * OpenSSL/Cryptogams accelerated Poly1305 transform for MIPS - * - * Copyright (C) 2019 Linaro Ltd. <ard.biesheuvel@linaro.org> - */ - -#include <linux/unaligned.h> -#include <crypto/algapi.h> -#include <crypto/internal/hash.h> -#include <crypto/internal/poly1305.h> -#include <linux/cpufeature.h> -#include <linux/crypto.h> -#include <linux/module.h> - -asmlinkage void poly1305_init_mips(void *state, const u8 *key); -asmlinkage void poly1305_blocks_mips(void *state, const u8 *src, u32 len, u32 hibit); -asmlinkage void poly1305_emit_mips(void *state, u8 *digest, const u32 *nonce); - -void poly1305_init_arch(struct poly1305_desc_ctx *dctx, const u8 key[POLY1305_KEY_SIZE]) -{ - poly1305_init_mips(&dctx->h, key); - dctx->s[0] = get_unaligned_le32(key + 16); - dctx->s[1] = get_unaligned_le32(key + 20); - dctx->s[2] = get_unaligned_le32(key + 24); - dctx->s[3] = get_unaligned_le32(key + 28); - dctx->buflen = 0; -} -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) -{ - if (unlikely(dctx->buflen)) { - u32 bytes = min(nbytes, POLY1305_BLOCK_SIZE - dctx->buflen); - - memcpy(dctx->buf + dctx->buflen, src, bytes); - src += bytes; - nbytes -= bytes; - dctx->buflen += bytes; - - if (dctx->buflen == POLY1305_BLOCK_SIZE) { - poly1305_blocks_mips(&dctx->h, dctx->buf, - POLY1305_BLOCK_SIZE, 1); - dctx->buflen = 0; - } - } - - if (likely(nbytes >= POLY1305_BLOCK_SIZE)) { - unsigned int len = round_down(nbytes, POLY1305_BLOCK_SIZE); - - poly1305_blocks_mips(&dctx->h, src, len, 1); - src += len; - nbytes %= POLY1305_BLOCK_SIZE; - } - - if (unlikely(nbytes)) { - dctx->buflen = nbytes; - memcpy(dctx->buf, src, nbytes); - } -} -EXPORT_SYMBOL(poly1305_update_arch); - -void poly1305_final_arch(struct poly1305_desc_ctx *dctx, u8 *dst) -{ - if (unlikely(dctx->buflen)) { - dctx->buf[dctx->buflen++] = 1; - memset(dctx->buf + dctx->buflen, 0, - POLY1305_BLOCK_SIZE - dctx->buflen); - poly1305_blocks_mips(&dctx->h, dctx->buf, POLY1305_BLOCK_SIZE, 0); - } - - poly1305_emit_mips(&dctx->h, dst, dctx->s); - *dctx = (struct poly1305_desc_ctx){}; -} -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", - .base.cra_priority = 200, - .base.cra_blocksize = POLY1305_BLOCK_SIZE, - .base.cra_module = THIS_MODULE, -}; - -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); -} - -module_init(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"); |