From 187f492d9d783d53893c3dea07c0b14841ba61f8 Mon Sep 17 00:00:00 2001 From: Kenny Root Date: Thu, 13 Jun 2013 16:43:17 -0700 Subject: Add NEON accelerated functions Reference implementation: ScryptTest.TestVectors (2588 ms) NEON acceleration: ScryptTest.TestVectors (1169 ms) Change-Id: I23974b2f0f64435696e75acfbdee1115a699abae --- NOTICE | 8 + Scrypt-config.mk | 6 +- import_scrypt.sh | 2 - lib/crypto/crypto_scrypt-neon-salsa208.h | 120 +++++++++ lib/crypto/crypto_scrypt-neon.c | 305 +++++++++++++++++++++ patches/README | 4 + patches/arm-neon.patch | 437 +++++++++++++++++++++++++++++++ scrypt.config | 8 + 8 files changed, 886 insertions(+), 4 deletions(-) create mode 100644 lib/crypto/crypto_scrypt-neon-salsa208.h create mode 100644 lib/crypto/crypto_scrypt-neon.c create mode 100644 patches/arm-neon.patch diff --git a/NOTICE b/NOTICE index e88e916..b0b9311 100644 --- a/NOTICE +++ b/NOTICE @@ -26,3 +26,11 @@ * This file was originally written by Colin Percival as part of the Tarsnap * online backup system. */ + +/* + * version 20110505 + * D. J. Bernstein + * Public domain. + * + * Based on crypto_core/salsa208/armneon/core.c from SUPERCOP 20130419 + */ diff --git a/Scrypt-config.mk b/Scrypt-config.mk index b32f9bd..30db285 100644 --- a/Scrypt-config.mk +++ b/Scrypt-config.mk @@ -37,9 +37,11 @@ common_c_includes := \ arm_c_flags := -arm_src_files := +arm_src_files := \ + lib/crypto/crypto_scrypt-neon.c \ -arm_exclude_files := +arm_exclude_files := \ + lib/crypto/crypto_scrypt-ref.c \ x86_c_flags := diff --git a/import_scrypt.sh b/import_scrypt.sh index 2270206..684379d 100755 --- a/import_scrypt.sh +++ b/import_scrypt.sh @@ -351,8 +351,6 @@ function import() { generate_build_config_mk ../build-config.mk - # Extract license from source file - sed '/^\/\*-/,/^ \*\//!d' lib/crypto/crypto_scrypt.h > ../NOTICE touch ../MODULE_LICENSE_BSD_LIKE cd .. diff --git a/lib/crypto/crypto_scrypt-neon-salsa208.h b/lib/crypto/crypto_scrypt-neon-salsa208.h new file mode 100644 index 0000000..a3b1019 --- /dev/null +++ b/lib/crypto/crypto_scrypt-neon-salsa208.h @@ -0,0 +1,120 @@ +/* + * version 20110505 + * D. J. Bernstein + * Public domain. + * + * Based on crypto_core/salsa208/armneon/core.c from SUPERCOP 20130419 + */ + +#define ROUNDS 8 +static void +salsa20_8_intrinsic(void * input) +{ + int i; + + const uint32x4_t abab = {-1,0,-1,0}; + + /* + * This is modified since we only have one argument. Usually you'd rearrange + * the constant, key, and input bytes, but we just have one linear array to + * rearrange which is a bit easier. + */ + + /* + * Change the input to be diagonals as if it's a 4x4 matrix of 32-bit values. + */ + uint32x4_t x0x5x10x15; + uint32x4_t x12x1x6x11; + uint32x4_t x8x13x2x7; + uint32x4_t x4x9x14x3; + + uint32x4_t x0x1x10x11; + uint32x4_t x12x13x6x7; + uint32x4_t x8x9x2x3; + uint32x4_t x4x5x14x15; + + uint32x4_t x0x1x2x3; + uint32x4_t x4x5x6x7; + uint32x4_t x8x9x10x11; + uint32x4_t x12x13x14x15; + + x0x1x2x3 = vld1q_u8((uint8_t *) input); + x4x5x6x7 = vld1q_u8(16 + (uint8_t *) input); + x8x9x10x11 = vld1q_u8(32 + (uint8_t *) input); + x12x13x14x15 = vld1q_u8(48 + (uint8_t *) input); + + x0x1x10x11 = vcombine_u32(vget_low_u32(x0x1x2x3), vget_high_u32(x8x9x10x11)); + x4x5x14x15 = vcombine_u32(vget_low_u32(x4x5x6x7), vget_high_u32(x12x13x14x15)); + x8x9x2x3 = vcombine_u32(vget_low_u32(x8x9x10x11), vget_high_u32(x0x1x2x3)); + x12x13x6x7 = vcombine_u32(vget_low_u32(x12x13x14x15), vget_high_u32(x4x5x6x7)); + + x0x5x10x15 = vbslq_u32(abab,x0x1x10x11,x4x5x14x15); + x8x13x2x7 = vbslq_u32(abab,x8x9x2x3,x12x13x6x7); + x4x9x14x3 = vbslq_u32(abab,x4x5x14x15,x8x9x2x3); + x12x1x6x11 = vbslq_u32(abab,x12x13x6x7,x0x1x10x11); + + uint32x4_t start0 = x0x5x10x15; + uint32x4_t start1 = x12x1x6x11; + uint32x4_t start3 = x4x9x14x3; + uint32x4_t start2 = x8x13x2x7; + + /* From here on this should be the same as the SUPERCOP version. */ + + uint32x4_t diag0 = start0; + uint32x4_t diag1 = start1; + uint32x4_t diag2 = start2; + uint32x4_t diag3 = start3; + + uint32x4_t a0; + uint32x4_t a1; + uint32x4_t a2; + uint32x4_t a3; + + for (i = ROUNDS;i > 0;i -= 2) { + a0 = diag1 + diag0; + diag3 ^= vsriq_n_u32(vshlq_n_u32(a0,7),a0,25); + a1 = diag0 + diag3; + diag2 ^= vsriq_n_u32(vshlq_n_u32(a1,9),a1,23); + a2 = diag3 + diag2; + diag1 ^= vsriq_n_u32(vshlq_n_u32(a2,13),a2,19); + a3 = diag2 + diag1; + diag0 ^= vsriq_n_u32(vshlq_n_u32(a3,18),a3,14); + + diag3 = vextq_u32(diag3,diag3,3); + diag2 = vextq_u32(diag2,diag2,2); + diag1 = vextq_u32(diag1,diag1,1); + + a0 = diag3 + diag0; + diag1 ^= vsriq_n_u32(vshlq_n_u32(a0,7),a0,25); + a1 = diag0 + diag1; + diag2 ^= vsriq_n_u32(vshlq_n_u32(a1,9),a1,23); + a2 = diag1 + diag2; + diag3 ^= vsriq_n_u32(vshlq_n_u32(a2,13),a2,19); + a3 = diag2 + diag3; + diag0 ^= vsriq_n_u32(vshlq_n_u32(a3,18),a3,14); + + diag1 = vextq_u32(diag1,diag1,3); + diag2 = vextq_u32(diag2,diag2,2); + diag3 = vextq_u32(diag3,diag3,1); + } + + x0x5x10x15 = diag0 + start0; + x12x1x6x11 = diag1 + start1; + x8x13x2x7 = diag2 + start2; + x4x9x14x3 = diag3 + start3; + + x0x1x10x11 = vbslq_u32(abab,x0x5x10x15,x12x1x6x11); + x12x13x6x7 = vbslq_u32(abab,x12x1x6x11,x8x13x2x7); + x8x9x2x3 = vbslq_u32(abab,x8x13x2x7,x4x9x14x3); + x4x5x14x15 = vbslq_u32(abab,x4x9x14x3,x0x5x10x15); + + x0x1x2x3 = vcombine_u32(vget_low_u32(x0x1x10x11),vget_high_u32(x8x9x2x3)); + x4x5x6x7 = vcombine_u32(vget_low_u32(x4x5x14x15),vget_high_u32(x12x13x6x7)); + x8x9x10x11 = vcombine_u32(vget_low_u32(x8x9x2x3),vget_high_u32(x0x1x10x11)); + x12x13x14x15 = vcombine_u32(vget_low_u32(x12x13x6x7),vget_high_u32(x4x5x14x15)); + + vst1q_u8((uint8_t *) input,(uint8x16_t) x0x1x2x3); + vst1q_u8(16 + (uint8_t *) input,(uint8x16_t) x4x5x6x7); + vst1q_u8(32 + (uint8_t *) input,(uint8x16_t) x8x9x10x11); + vst1q_u8(48 + (uint8_t *) input,(uint8x16_t) x12x13x14x15); +} diff --git a/lib/crypto/crypto_scrypt-neon.c b/lib/crypto/crypto_scrypt-neon.c new file mode 100644 index 0000000..a3bf052 --- /dev/null +++ b/lib/crypto/crypto_scrypt-neon.c @@ -0,0 +1,305 @@ +/*- + * Copyright 2009 Colin Percival + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file was originally written by Colin Percival as part of the Tarsnap + * online backup system. + */ +#include "scrypt_platform.h" + +#include +#include + +#include +#include +#include +#include +#include + +#ifdef USE_OPENSSL_PBKDF2 +#include +#else +#include "sha256.h" +#endif +#include "sysendian.h" + +#include "crypto_scrypt.h" + +#include "crypto_scrypt-neon-salsa208.h" + +static void blkcpy(void *, void *, size_t); +static void blkxor(void *, void *, size_t); +void crypto_core_salsa208_armneon2(void *); +static void blockmix_salsa8(uint8x16_t *, uint8x16_t *, uint8x16_t *, size_t); +static uint64_t integerify(void *, size_t); +static void smix(uint8_t *, size_t, uint64_t, void *, void *); + +static void +blkcpy(void * dest, void * src, size_t len) +{ + uint8x16_t * D = dest; + uint8x16_t * S = src; + size_t L = len / 16; + size_t i; + + for (i = 0; i < L; i++) + D[i] = S[i]; +} + +static void +blkxor(void * dest, void * src, size_t len) +{ + uint8x16_t * D = dest; + uint8x16_t * S = src; + size_t L = len / 16; + size_t i; + + for (i = 0; i < L; i++) + D[i] = veorq_u8(D[i], S[i]); +} + +/** + * blockmix_salsa8(B, Y, r): + * Compute B = BlockMix_{salsa20/8, r}(B). The input B must be 128r bytes in + * length; the temporary space Y must also be the same size. + */ +static void +blockmix_salsa8(uint8x16_t * Bin, uint8x16_t * Bout, uint8x16_t * X, size_t r) +{ + size_t i; + + /* 1: X <-- B_{2r - 1} */ + blkcpy(X, &Bin[8 * r - 4], 64); + + /* 2: for i = 0 to 2r - 1 do */ + for (i = 0; i < r; i++) { + /* 3: X <-- H(X \xor B_i) */ + blkxor(X, &Bin[i * 8], 64); + salsa20_8_intrinsic((void *) X); + + /* 4: Y_i <-- X */ + /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */ + blkcpy(&Bout[i * 4], X, 64); + + /* 3: X <-- H(X \xor B_i) */ + blkxor(X, &Bin[i * 8 + 4], 64); + salsa20_8_intrinsic((void *) X); + + /* 4: Y_i <-- X */ + /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */ + blkcpy(&Bout[(r + i) * 4], X, 64); + } +} + +/** + * integerify(B, r): + * Return the result of parsing B_{2r-1} as a little-endian integer. + */ +static uint64_t +integerify(void * B, size_t r) +{ + uint8_t * X = (void*)((uintptr_t)(B) + (2 * r - 1) * 64); + + return (le64dec(X)); +} + +/** + * smix(B, r, N, V, XY): + * Compute B = SMix_r(B, N). The input B must be 128r bytes in length; the + * temporary storage V must be 128rN bytes in length; the temporary storage + * XY must be 256r bytes in length. The value N must be a power of 2. + */ +static void +smix(uint8_t * B, size_t r, uint64_t N, void * V, void * XY) +{ + uint8x16_t * X = XY; + uint8x16_t * Y = (void *)((uintptr_t)(XY) + 128 * r); + uint8x16_t * Z = (void *)((uintptr_t)(XY) + 256 * r); + uint32_t * X32 = (void *)X; + uint64_t i, j; + size_t k; + + /* 1: X <-- B */ + blkcpy(X, B, 128 * r); + + /* 2: for i = 0 to N - 1 do */ + for (i = 0; i < N; i += 2) { + /* 3: V_i <-- X */ + blkcpy((void *)((uintptr_t)(V) + i * 128 * r), X, 128 * r); + + /* 4: X <-- H(X) */ + blockmix_salsa8(X, Y, Z, r); + + /* 3: V_i <-- X */ + blkcpy((void *)((uintptr_t)(V) + (i + 1) * 128 * r), + Y, 128 * r); + + /* 4: X <-- H(X) */ + blockmix_salsa8(Y, X, Z, r); + } + + /* 6: for i = 0 to N - 1 do */ + for (i = 0; i < N; i += 2) { + /* 7: j <-- Integerify(X) mod N */ + j = integerify(X, r) & (N - 1); + + /* 8: X <-- H(X \xor V_j) */ + blkxor(X, (void *)((uintptr_t)(V) + j * 128 * r), 128 * r); + blockmix_salsa8(X, Y, Z, r); + + /* 7: j <-- Integerify(X) mod N */ + j = integerify(Y, r) & (N - 1); + + /* 8: X <-- H(X \xor V_j) */ + blkxor(Y, (void *)((uintptr_t)(V) + j * 128 * r), 128 * r); + blockmix_salsa8(Y, X, Z, r); + } + + /* 10: B' <-- X */ + blkcpy(B, X, 128 * r); +} + +/** + * crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen): + * Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r, + * p, buflen) and write the result into buf. The parameters r, p, and buflen + * must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N + * must be a power of 2. + * + * Return 0 on success; or -1 on error. + */ +int +crypto_scrypt(const uint8_t * passwd, size_t passwdlen, + const uint8_t * salt, size_t saltlen, uint64_t N, uint32_t r, uint32_t p, + uint8_t * buf, size_t buflen) +{ + void * B0, * V0, * XY0; + uint8_t * B; + uint32_t * V; + uint32_t * XY; + uint32_t i; + + /* Sanity-check parameters. */ +#if SIZE_MAX > UINT32_MAX + if (buflen > (((uint64_t)(1) << 32) - 1) * 32) { + errno = EFBIG; + goto err0; + } +#endif + if ((uint64_t)(r) * (uint64_t)(p) >= (1 << 30)) { + errno = EFBIG; + goto err0; + } + if (((N & (N - 1)) != 0) || (N == 0)) { + errno = EINVAL; + goto err0; + } + if ((r > SIZE_MAX / 128 / p) || +#if SIZE_MAX / 256 <= UINT32_MAX + (r > SIZE_MAX / 256) || +#endif + (N > SIZE_MAX / 128 / r)) { + errno = ENOMEM; + goto err0; + } + + /* Allocate memory. */ +#ifdef HAVE_POSIX_MEMALIGN + if ((errno = posix_memalign(&B0, 64, 128 * r * p)) != 0) + goto err0; + B = (uint8_t *)(B0); + if ((errno = posix_memalign(&XY0, 64, 256 * r + 64)) != 0) + goto err1; + XY = (uint32_t *)(XY0); +#ifndef MAP_ANON + if ((errno = posix_memalign(&V0, 64, 128 * r * N)) != 0) + goto err2; + V = (uint32_t *)(V0); +#endif +#else + if ((B0 = malloc(128 * r * p + 63)) == NULL) + goto err0; + B = (uint8_t *)(((uintptr_t)(B0) + 63) & ~ (uintptr_t)(63)); + if ((XY0 = malloc(256 * r + 64 + 63)) == NULL) + goto err1; + XY = (uint32_t *)(((uintptr_t)(XY0) + 63) & ~ (uintptr_t)(63)); +#ifndef MAP_ANON + if ((V0 = malloc(128 * r * N + 63)) == NULL) + goto err2; + V = (uint32_t *)(((uintptr_t)(V0) + 63) & ~ (uintptr_t)(63)); +#endif +#endif +#ifdef MAP_ANON + if ((V0 = mmap(NULL, 128 * r * N, PROT_READ | PROT_WRITE, +#ifdef MAP_NOCORE + MAP_ANON | MAP_PRIVATE | MAP_NOCORE, +#else + MAP_ANON | MAP_PRIVATE, +#endif + -1, 0)) == MAP_FAILED) + goto err2; + V = (uint32_t *)(V0); +#endif + + /* 1: (B_0 ... B_{p-1}) <-- PBKDF2(P, S, 1, p * MFLen) */ +#ifdef USE_OPENSSL_PBKDF2 + PKCS5_PBKDF2_HMAC((const char *)passwd, passwdlen, salt, saltlen, 1, EVP_sha256(), p * 128 * r, B); +#else + PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, 1, B, p * 128 * r); +#endif + + /* 2: for i = 0 to p - 1 do */ + for (i = 0; i < p; i++) { + /* 3: B_i <-- MF(B_i, N) */ + smix(&B[i * 128 * r], r, N, V, XY); + } + + /* 5: DK <-- PBKDF2(P, B, 1, dkLen) */ +#ifdef USE_OPENSSL_PBKDF2 + PKCS5_PBKDF2_HMAC((const char *)passwd, passwdlen, B, p * 128 * r, 1, EVP_sha256(), buflen, buf); +#else + PBKDF2_SHA256(passwd, passwdlen, B, p * 128 * r, 1, buf, buflen); +#endif + + /* Free memory. */ +#ifdef MAP_ANON + if (munmap(V0, 128 * r * N)) + goto err2; +#else + free(V0); +#endif + free(XY0); + free(B0); + + /* Success! */ + return (0); + +err2: + free(XY0); +err1: + free(B0); +err0: + /* Failure! */ + return (-1); +} diff --git a/patches/README b/patches/README index f606938..353ddbb 100644 --- a/patches/README +++ b/patches/README @@ -5,3 +5,7 @@ Allows scrypt to compile against bionic. use_openssl_pbkdf2.patch: Uses the PBKDF2 function from OpenSSL (it uses accelerated SHA256) + +arm-neon.patch: + +Adds NEON acceleration for the Salsa20/8 mixing function. diff --git a/patches/arm-neon.patch b/patches/arm-neon.patch new file mode 100644 index 0000000..7197f99 --- /dev/null +++ b/patches/arm-neon.patch @@ -0,0 +1,437 @@ +diff --git a/lib/crypto/crypto_scrypt-neon-salsa208.h b/lib/crypto/crypto_scrypt-neon-salsa208.h +new file mode 100644 +index 0000000..a3b1019 +--- /dev/null ++++ b/lib/crypto/crypto_scrypt-neon-salsa208.h +@@ -0,0 +1,120 @@ ++/* ++ * version 20110505 ++ * D. J. Bernstein ++ * Public domain. ++ * ++ * Based on crypto_core/salsa208/armneon/core.c from SUPERCOP 20130419 ++ */ ++ ++#define ROUNDS 8 ++static void ++salsa20_8_intrinsic(void * input) ++{ ++ int i; ++ ++ const uint32x4_t abab = {-1,0,-1,0}; ++ ++ /* ++ * This is modified since we only have one argument. Usually you'd rearrange ++ * the constant, key, and input bytes, but we just have one linear array to ++ * rearrange which is a bit easier. ++ */ ++ ++ /* ++ * Change the input to be diagonals as if it's a 4x4 matrix of 32-bit values. ++ */ ++ uint32x4_t x0x5x10x15; ++ uint32x4_t x12x1x6x11; ++ uint32x4_t x8x13x2x7; ++ uint32x4_t x4x9x14x3; ++ ++ uint32x4_t x0x1x10x11; ++ uint32x4_t x12x13x6x7; ++ uint32x4_t x8x9x2x3; ++ uint32x4_t x4x5x14x15; ++ ++ uint32x4_t x0x1x2x3; ++ uint32x4_t x4x5x6x7; ++ uint32x4_t x8x9x10x11; ++ uint32x4_t x12x13x14x15; ++ ++ x0x1x2x3 = vld1q_u8((uint8_t *) input); ++ x4x5x6x7 = vld1q_u8(16 + (uint8_t *) input); ++ x8x9x10x11 = vld1q_u8(32 + (uint8_t *) input); ++ x12x13x14x15 = vld1q_u8(48 + (uint8_t *) input); ++ ++ x0x1x10x11 = vcombine_u32(vget_low_u32(x0x1x2x3), vget_high_u32(x8x9x10x11)); ++ x4x5x14x15 = vcombine_u32(vget_low_u32(x4x5x6x7), vget_high_u32(x12x13x14x15)); ++ x8x9x2x3 = vcombine_u32(vget_low_u32(x8x9x10x11), vget_high_u32(x0x1x2x3)); ++ x12x13x6x7 = vcombine_u32(vget_low_u32(x12x13x14x15), vget_high_u32(x4x5x6x7)); ++ ++ x0x5x10x15 = vbslq_u32(abab,x0x1x10x11,x4x5x14x15); ++ x8x13x2x7 = vbslq_u32(abab,x8x9x2x3,x12x13x6x7); ++ x4x9x14x3 = vbslq_u32(abab,x4x5x14x15,x8x9x2x3); ++ x12x1x6x11 = vbslq_u32(abab,x12x13x6x7,x0x1x10x11); ++ ++ uint32x4_t start0 = x0x5x10x15; ++ uint32x4_t start1 = x12x1x6x11; ++ uint32x4_t start3 = x4x9x14x3; ++ uint32x4_t start2 = x8x13x2x7; ++ ++ /* From here on this should be the same as the SUPERCOP version. */ ++ ++ uint32x4_t diag0 = start0; ++ uint32x4_t diag1 = start1; ++ uint32x4_t diag2 = start2; ++ uint32x4_t diag3 = start3; ++ ++ uint32x4_t a0; ++ uint32x4_t a1; ++ uint32x4_t a2; ++ uint32x4_t a3; ++ ++ for (i = ROUNDS;i > 0;i -= 2) { ++ a0 = diag1 + diag0; ++ diag3 ^= vsriq_n_u32(vshlq_n_u32(a0,7),a0,25); ++ a1 = diag0 + diag3; ++ diag2 ^= vsriq_n_u32(vshlq_n_u32(a1,9),a1,23); ++ a2 = diag3 + diag2; ++ diag1 ^= vsriq_n_u32(vshlq_n_u32(a2,13),a2,19); ++ a3 = diag2 + diag1; ++ diag0 ^= vsriq_n_u32(vshlq_n_u32(a3,18),a3,14); ++ ++ diag3 = vextq_u32(diag3,diag3,3); ++ diag2 = vextq_u32(diag2,diag2,2); ++ diag1 = vextq_u32(diag1,diag1,1); ++ ++ a0 = diag3 + diag0; ++ diag1 ^= vsriq_n_u32(vshlq_n_u32(a0,7),a0,25); ++ a1 = diag0 + diag1; ++ diag2 ^= vsriq_n_u32(vshlq_n_u32(a1,9),a1,23); ++ a2 = diag1 + diag2; ++ diag3 ^= vsriq_n_u32(vshlq_n_u32(a2,13),a2,19); ++ a3 = diag2 + diag3; ++ diag0 ^= vsriq_n_u32(vshlq_n_u32(a3,18),a3,14); ++ ++ diag1 = vextq_u32(diag1,diag1,3); ++ diag2 = vextq_u32(diag2,diag2,2); ++ diag3 = vextq_u32(diag3,diag3,1); ++ } ++ ++ x0x5x10x15 = diag0 + start0; ++ x12x1x6x11 = diag1 + start1; ++ x8x13x2x7 = diag2 + start2; ++ x4x9x14x3 = diag3 + start3; ++ ++ x0x1x10x11 = vbslq_u32(abab,x0x5x10x15,x12x1x6x11); ++ x12x13x6x7 = vbslq_u32(abab,x12x1x6x11,x8x13x2x7); ++ x8x9x2x3 = vbslq_u32(abab,x8x13x2x7,x4x9x14x3); ++ x4x5x14x15 = vbslq_u32(abab,x4x9x14x3,x0x5x10x15); ++ ++ x0x1x2x3 = vcombine_u32(vget_low_u32(x0x1x10x11),vget_high_u32(x8x9x2x3)); ++ x4x5x6x7 = vcombine_u32(vget_low_u32(x4x5x14x15),vget_high_u32(x12x13x6x7)); ++ x8x9x10x11 = vcombine_u32(vget_low_u32(x8x9x2x3),vget_high_u32(x0x1x10x11)); ++ x12x13x14x15 = vcombine_u32(vget_low_u32(x12x13x6x7),vget_high_u32(x4x5x14x15)); ++ ++ vst1q_u8((uint8_t *) input,(uint8x16_t) x0x1x2x3); ++ vst1q_u8(16 + (uint8_t *) input,(uint8x16_t) x4x5x6x7); ++ vst1q_u8(32 + (uint8_t *) input,(uint8x16_t) x8x9x10x11); ++ vst1q_u8(48 + (uint8_t *) input,(uint8x16_t) x12x13x14x15); ++} +diff --git a/lib/crypto/crypto_scrypt-neon.c b/lib/crypto/crypto_scrypt-neon.c +new file mode 100644 +index 0000000..a3bf052 +--- /dev/null ++++ b/lib/crypto/crypto_scrypt-neon.c +@@ -0,0 +1,305 @@ ++/*- ++ * Copyright 2009 Colin Percival ++ * All rights reserved. ++ * ++ * Redistribution and use in source and binary forms, with or without ++ * modification, are permitted provided that the following conditions ++ * are met: ++ * 1. Redistributions of source code must retain the above copyright ++ * notice, this list of conditions and the following disclaimer. ++ * 2. Redistributions in binary form must reproduce the above copyright ++ * notice, this list of conditions and the following disclaimer in the ++ * documentation and/or other materials provided with the distribution. ++ * ++ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ++ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE ++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ++ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE ++ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL ++ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS ++ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ++ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT ++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY ++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF ++ * SUCH DAMAGE. ++ * ++ * This file was originally written by Colin Percival as part of the Tarsnap ++ * online backup system. ++ */ ++#include "scrypt_platform.h" ++ ++#include ++#include ++ ++#include ++#include ++#include ++#include ++#include ++ ++#ifdef USE_OPENSSL_PBKDF2 ++#include ++#else ++#include "sha256.h" ++#endif ++#include "sysendian.h" ++ ++#include "crypto_scrypt.h" ++ ++#include "crypto_scrypt-neon-salsa208.h" ++ ++static void blkcpy(void *, void *, size_t); ++static void blkxor(void *, void *, size_t); ++void crypto_core_salsa208_armneon2(void *); ++static void blockmix_salsa8(uint8x16_t *, uint8x16_t *, uint8x16_t *, size_t); ++static uint64_t integerify(void *, size_t); ++static void smix(uint8_t *, size_t, uint64_t, void *, void *); ++ ++static void ++blkcpy(void * dest, void * src, size_t len) ++{ ++ uint8x16_t * D = dest; ++ uint8x16_t * S = src; ++ size_t L = len / 16; ++ size_t i; ++ ++ for (i = 0; i < L; i++) ++ D[i] = S[i]; ++} ++ ++static void ++blkxor(void * dest, void * src, size_t len) ++{ ++ uint8x16_t * D = dest; ++ uint8x16_t * S = src; ++ size_t L = len / 16; ++ size_t i; ++ ++ for (i = 0; i < L; i++) ++ D[i] = veorq_u8(D[i], S[i]); ++} ++ ++/** ++ * blockmix_salsa8(B, Y, r): ++ * Compute B = BlockMix_{salsa20/8, r}(B). The input B must be 128r bytes in ++ * length; the temporary space Y must also be the same size. ++ */ ++static void ++blockmix_salsa8(uint8x16_t * Bin, uint8x16_t * Bout, uint8x16_t * X, size_t r) ++{ ++ size_t i; ++ ++ /* 1: X <-- B_{2r - 1} */ ++ blkcpy(X, &Bin[8 * r - 4], 64); ++ ++ /* 2: for i = 0 to 2r - 1 do */ ++ for (i = 0; i < r; i++) { ++ /* 3: X <-- H(X \xor B_i) */ ++ blkxor(X, &Bin[i * 8], 64); ++ salsa20_8_intrinsic((void *) X); ++ ++ /* 4: Y_i <-- X */ ++ /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */ ++ blkcpy(&Bout[i * 4], X, 64); ++ ++ /* 3: X <-- H(X \xor B_i) */ ++ blkxor(X, &Bin[i * 8 + 4], 64); ++ salsa20_8_intrinsic((void *) X); ++ ++ /* 4: Y_i <-- X */ ++ /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */ ++ blkcpy(&Bout[(r + i) * 4], X, 64); ++ } ++} ++ ++/** ++ * integerify(B, r): ++ * Return the result of parsing B_{2r-1} as a little-endian integer. ++ */ ++static uint64_t ++integerify(void * B, size_t r) ++{ ++ uint8_t * X = (void*)((uintptr_t)(B) + (2 * r - 1) * 64); ++ ++ return (le64dec(X)); ++} ++ ++/** ++ * smix(B, r, N, V, XY): ++ * Compute B = SMix_r(B, N). The input B must be 128r bytes in length; the ++ * temporary storage V must be 128rN bytes in length; the temporary storage ++ * XY must be 256r bytes in length. The value N must be a power of 2. ++ */ ++static void ++smix(uint8_t * B, size_t r, uint64_t N, void * V, void * XY) ++{ ++ uint8x16_t * X = XY; ++ uint8x16_t * Y = (void *)((uintptr_t)(XY) + 128 * r); ++ uint8x16_t * Z = (void *)((uintptr_t)(XY) + 256 * r); ++ uint32_t * X32 = (void *)X; ++ uint64_t i, j; ++ size_t k; ++ ++ /* 1: X <-- B */ ++ blkcpy(X, B, 128 * r); ++ ++ /* 2: for i = 0 to N - 1 do */ ++ for (i = 0; i < N; i += 2) { ++ /* 3: V_i <-- X */ ++ blkcpy((void *)((uintptr_t)(V) + i * 128 * r), X, 128 * r); ++ ++ /* 4: X <-- H(X) */ ++ blockmix_salsa8(X, Y, Z, r); ++ ++ /* 3: V_i <-- X */ ++ blkcpy((void *)((uintptr_t)(V) + (i + 1) * 128 * r), ++ Y, 128 * r); ++ ++ /* 4: X <-- H(X) */ ++ blockmix_salsa8(Y, X, Z, r); ++ } ++ ++ /* 6: for i = 0 to N - 1 do */ ++ for (i = 0; i < N; i += 2) { ++ /* 7: j <-- Integerify(X) mod N */ ++ j = integerify(X, r) & (N - 1); ++ ++ /* 8: X <-- H(X \xor V_j) */ ++ blkxor(X, (void *)((uintptr_t)(V) + j * 128 * r), 128 * r); ++ blockmix_salsa8(X, Y, Z, r); ++ ++ /* 7: j <-- Integerify(X) mod N */ ++ j = integerify(Y, r) & (N - 1); ++ ++ /* 8: X <-- H(X \xor V_j) */ ++ blkxor(Y, (void *)((uintptr_t)(V) + j * 128 * r), 128 * r); ++ blockmix_salsa8(Y, X, Z, r); ++ } ++ ++ /* 10: B' <-- X */ ++ blkcpy(B, X, 128 * r); ++} ++ ++/** ++ * crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen): ++ * Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r, ++ * p, buflen) and write the result into buf. The parameters r, p, and buflen ++ * must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N ++ * must be a power of 2. ++ * ++ * Return 0 on success; or -1 on error. ++ */ ++int ++crypto_scrypt(const uint8_t * passwd, size_t passwdlen, ++ const uint8_t * salt, size_t saltlen, uint64_t N, uint32_t r, uint32_t p, ++ uint8_t * buf, size_t buflen) ++{ ++ void * B0, * V0, * XY0; ++ uint8_t * B; ++ uint32_t * V; ++ uint32_t * XY; ++ uint32_t i; ++ ++ /* Sanity-check parameters. */ ++#if SIZE_MAX > UINT32_MAX ++ if (buflen > (((uint64_t)(1) << 32) - 1) * 32) { ++ errno = EFBIG; ++ goto err0; ++ } ++#endif ++ if ((uint64_t)(r) * (uint64_t)(p) >= (1 << 30)) { ++ errno = EFBIG; ++ goto err0; ++ } ++ if (((N & (N - 1)) != 0) || (N == 0)) { ++ errno = EINVAL; ++ goto err0; ++ } ++ if ((r > SIZE_MAX / 128 / p) || ++#if SIZE_MAX / 256 <= UINT32_MAX ++ (r > SIZE_MAX / 256) || ++#endif ++ (N > SIZE_MAX / 128 / r)) { ++ errno = ENOMEM; ++ goto err0; ++ } ++ ++ /* Allocate memory. */ ++#ifdef HAVE_POSIX_MEMALIGN ++ if ((errno = posix_memalign(&B0, 64, 128 * r * p)) != 0) ++ goto err0; ++ B = (uint8_t *)(B0); ++ if ((errno = posix_memalign(&XY0, 64, 256 * r + 64)) != 0) ++ goto err1; ++ XY = (uint32_t *)(XY0); ++#ifndef MAP_ANON ++ if ((errno = posix_memalign(&V0, 64, 128 * r * N)) != 0) ++ goto err2; ++ V = (uint32_t *)(V0); ++#endif ++#else ++ if ((B0 = malloc(128 * r * p + 63)) == NULL) ++ goto err0; ++ B = (uint8_t *)(((uintptr_t)(B0) + 63) & ~ (uintptr_t)(63)); ++ if ((XY0 = malloc(256 * r + 64 + 63)) == NULL) ++ goto err1; ++ XY = (uint32_t *)(((uintptr_t)(XY0) + 63) & ~ (uintptr_t)(63)); ++#ifndef MAP_ANON ++ if ((V0 = malloc(128 * r * N + 63)) == NULL) ++ goto err2; ++ V = (uint32_t *)(((uintptr_t)(V0) + 63) & ~ (uintptr_t)(63)); ++#endif ++#endif ++#ifdef MAP_ANON ++ if ((V0 = mmap(NULL, 128 * r * N, PROT_READ | PROT_WRITE, ++#ifdef MAP_NOCORE ++ MAP_ANON | MAP_PRIVATE | MAP_NOCORE, ++#else ++ MAP_ANON | MAP_PRIVATE, ++#endif ++ -1, 0)) == MAP_FAILED) ++ goto err2; ++ V = (uint32_t *)(V0); ++#endif ++ ++ /* 1: (B_0 ... B_{p-1}) <-- PBKDF2(P, S, 1, p * MFLen) */ ++#ifdef USE_OPENSSL_PBKDF2 ++ PKCS5_PBKDF2_HMAC((const char *)passwd, passwdlen, salt, saltlen, 1, EVP_sha256(), p * 128 * r, B); ++#else ++ PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, 1, B, p * 128 * r); ++#endif ++ ++ /* 2: for i = 0 to p - 1 do */ ++ for (i = 0; i < p; i++) { ++ /* 3: B_i <-- MF(B_i, N) */ ++ smix(&B[i * 128 * r], r, N, V, XY); ++ } ++ ++ /* 5: DK <-- PBKDF2(P, B, 1, dkLen) */ ++#ifdef USE_OPENSSL_PBKDF2 ++ PKCS5_PBKDF2_HMAC((const char *)passwd, passwdlen, B, p * 128 * r, 1, EVP_sha256(), buflen, buf); ++#else ++ PBKDF2_SHA256(passwd, passwdlen, B, p * 128 * r, 1, buf, buflen); ++#endif ++ ++ /* Free memory. */ ++#ifdef MAP_ANON ++ if (munmap(V0, 128 * r * N)) ++ goto err2; ++#else ++ free(V0); ++#endif ++ free(XY0); ++ free(B0); ++ ++ /* Success! */ ++ return (0); ++ ++err2: ++ free(XY0); ++err1: ++ free(B0); ++err0: ++ /* Failure! */ ++ return (-1); ++} diff --git a/scrypt.config b/scrypt.config index 3d3ec90..13fd4c9 100644 --- a/scrypt.config +++ b/scrypt.config @@ -44,9 +44,11 @@ lib/crypto/crypto_scrypt-ref.c \ " SCRYPT_SOURCES_arm="\ +lib/crypto/crypto_scrypt-neon.c \ " SCRYPT_SOURCES_EXCLUDES_arm="\ +lib/crypto/crypto_scrypt-ref.c \ " SCRYPT_SOURCES_mips="\ @@ -73,8 +75,14 @@ lib/crypto/crypto_scrypt-ref.c \ SCRYPT_PATCHES="\ use_openssl_pbkdf2.patch \ +arm-neon.patch \ " SCRYPT_PATCHES_use_openssl_pbkdf2_SOURCES="\ lib/crypto/crypto_scrypt-ref.c \ " + +SCRYPT_PATCHES_bionic_SOURCES="\ +lib/crypto/crypto_scrypt-neon.c \ +lib/crypto/crypto_scrypt-neon-salsa208.h \ +" -- cgit v1.2.3