diff options
| -rw-r--r-- | arch/x86/crypto/twofish-avx-x86_64-asm_64.S | 48 | ||||
| -rw-r--r-- | arch/x86/crypto/twofish_avx_glue.c | 91 |
2 files changed, 98 insertions, 41 deletions
diff --git a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S index 8d3e113b2c95..05058134c443 100644 --- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S +++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S @@ -4,7 +4,7 @@ * Copyright (C) 2012 Johannes Goetzfried * <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> * - * Copyright © 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> + * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -33,6 +33,8 @@ .Lbswap128_mask: .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 +.Lxts_gf128mul_and_shl1_mask: + .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 .text @@ -408,3 +410,47 @@ ENTRY(twofish_ctr_8way) ret; ENDPROC(twofish_ctr_8way) + +ENTRY(twofish_xts_enc_8way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) + */ + + movq %rsi, %r11; + + /* regs <= src, dst <= IVs, regs <= regs xor IVs */ + load_xts_8way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2, + RX0, RX1, RY0, .Lxts_gf128mul_and_shl1_mask); + + call __twofish_enc_blk8; + + /* dst <= regs xor IVs(in dst) */ + store_xts_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2); + + ret; +ENDPROC(twofish_xts_enc_8way) + +ENTRY(twofish_xts_dec_8way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) + */ + + movq %rsi, %r11; + + /* regs <= src, dst <= IVs, regs <= regs xor IVs */ + load_xts_8way(%rcx, %rdx, %rsi, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2, + RX0, RX1, RY0, .Lxts_gf128mul_and_shl1_mask); + + call __twofish_dec_blk8; + + /* dst <= regs xor IVs(in dst) */ + store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); + + ret; +ENDPROC(twofish_xts_dec_8way) diff --git a/arch/x86/crypto/twofish_avx_glue.c b/arch/x86/crypto/twofish_avx_glue.c index 94ac91d26e47..a62ba541884e 100644 --- a/arch/x86/crypto/twofish_avx_glue.c +++ b/arch/x86/crypto/twofish_avx_glue.c @@ -4,6 +4,8 @@ * Copyright (C) 2012 Johannes Goetzfried * <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> * + * Copyright © 2013 Jussi Kivilinna <jussi.kivilinna@iki.fi> + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or @@ -56,12 +58,29 @@ asmlinkage void twofish_cbc_dec_8way(struct twofish_ctx *ctx, u8 *dst, asmlinkage void twofish_ctr_8way(struct twofish_ctx *ctx, u8 *dst, const u8 *src, le128 *iv); +asmlinkage void twofish_xts_enc_8way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); +asmlinkage void twofish_xts_dec_8way(struct twofish_ctx *ctx, u8 *dst, + const u8 *src, le128 *iv); + static inline void twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst, const u8 *src) { __twofish_enc_blk_3way(ctx, dst, src, false); } +static void twofish_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv) +{ + glue_xts_crypt_128bit_one(ctx, dst, src, iv, + GLUE_FUNC_CAST(twofish_enc_blk)); +} + +static void twofish_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv) +{ + glue_xts_crypt_128bit_one(ctx, dst, src, iv, + GLUE_FUNC_CAST(twofish_dec_blk)); +} + static const struct common_glue_ctx twofish_enc = { .num_funcs = 3, @@ -95,6 +114,19 @@ static const struct common_glue_ctx twofish_ctr = { } } }; +static const struct common_glue_ctx twofish_enc_xts = { + .num_funcs = 2, + .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS, + + .funcs = { { + .num_blocks = TWOFISH_PARALLEL_BLOCKS, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_enc_8way) } + }, { + .num_blocks = 1, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_enc) } + } } +}; + static const struct common_glue_ctx twofish_dec = { .num_funcs = 3, .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS, @@ -127,6 +159,19 @@ static const struct common_glue_ctx twofish_dec_cbc = { } } }; +static const struct common_glue_ctx twofish_dec_xts = { + .num_funcs = 2, + .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS, + + .funcs = { { + .num_blocks = TWOFISH_PARALLEL_BLOCKS, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_dec_8way) } + }, { + .num_blocks = 1, + .fn_u = { .xts = GLUE_XTS_FUNC_CAST(twofish_xts_dec) } + } } +}; + static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { @@ -275,54 +320,20 @@ static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { struct twofish_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); - be128 buf[TWOFISH_PARALLEL_BLOCKS]; - struct crypt_priv crypt_ctx = { - .ctx = &ctx->crypt_ctx, - .fpu_enabled = false, - }; - struct xts_crypt_req req = { - .tbuf = buf, - .tbuflen = sizeof(buf), - - .tweak_ctx = &ctx->tweak_ctx, - .tweak_fn = XTS_TWEAK_CAST(twofish_enc_blk), - .crypt_ctx = &crypt_ctx, - .crypt_fn = encrypt_callback, - }; - int ret; - desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; - ret = xts_crypt(desc, dst, src, nbytes, &req); - twofish_fpu_end(crypt_ctx.fpu_enabled); - - return ret; + return glue_xts_crypt_128bit(&twofish_enc_xts, desc, dst, src, nbytes, + XTS_TWEAK_CAST(twofish_enc_blk), + &ctx->tweak_ctx, &ctx->crypt_ctx); } static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { struct twofish_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); - be128 buf[TWOFISH_PARALLEL_BLOCKS]; - struct crypt_priv crypt_ctx = { - .ctx = &ctx->crypt_ctx, - .fpu_enabled = false, - }; - struct xts_crypt_req req = { - .tbuf = buf, - .tbuflen = sizeof(buf), - - .tweak_ctx = &ctx->tweak_ctx, - .tweak_fn = XTS_TWEAK_CAST(twofish_enc_blk), - .crypt_ctx = &crypt_ctx, - .crypt_fn = decrypt_callback, - }; - int ret; - desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; - ret = xts_crypt(desc, dst, src, nbytes, &req); - twofish_fpu_end(crypt_ctx.fpu_enabled); - - return ret; + return glue_xts_crypt_128bit(&twofish_dec_xts, desc, dst, src, nbytes, + XTS_TWEAK_CAST(twofish_enc_blk), + &ctx->tweak_ctx, &ctx->crypt_ctx); } static struct crypto_alg twofish_algs[10] = { { |