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Diffstat (limited to 'module/icp/algs/sha2/sha2.c')
| -rw-r--r-- | module/icp/algs/sha2/sha2.c | 957 |
1 files changed, 0 insertions, 957 deletions
diff --git a/module/icp/algs/sha2/sha2.c b/module/icp/algs/sha2/sha2.c deleted file mode 100644 index e6bbe34ea..000000000 --- a/module/icp/algs/sha2/sha2.c +++ /dev/null @@ -1,957 +0,0 @@ -/* - * Copyright 2009 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ -/* - * Copyright 2013 Saso Kiselkov. All rights reserved. - */ - -/* - * The basic framework for this code came from the reference - * implementation for MD5. That implementation is Copyright (C) - * 1991-2, RSA Data Security, Inc. Created 1991. All rights reserved. - * - * License to copy and use this software is granted provided that it - * is identified as the "RSA Data Security, Inc. MD5 Message-Digest - * Algorithm" in all material mentioning or referencing this software - * or this function. - * - * License is also granted to make and use derivative works provided - * that such works are identified as "derived from the RSA Data - * Security, Inc. MD5 Message-Digest Algorithm" in all material - * mentioning or referencing the derived work. - * - * RSA Data Security, Inc. makes no representations concerning either - * the merchantability of this software or the suitability of this - * software for any particular purpose. It is provided "as is" - * without express or implied warranty of any kind. - * - * These notices must be retained in any copies of any part of this - * documentation and/or software. - * - * NOTE: Cleaned-up and optimized, version of SHA2, based on the FIPS 180-2 - * standard, available at - * http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf - * Not as fast as one would like -- further optimizations are encouraged - * and appreciated. - */ - -#include <sys/zfs_context.h> -#define _SHA2_IMPL -#include <sys/sha2.h> -#include <sha2/sha2_consts.h> - -#define _RESTRICT_KYWD - -#ifdef _ZFS_LITTLE_ENDIAN -#include <sys/byteorder.h> -#define HAVE_HTONL -#endif -#include <sys/isa_defs.h> /* for _ILP32 */ -#include <sys/asm_linkage.h> - -static void Encode(uint8_t *, uint32_t *, size_t); -static void Encode64(uint8_t *, uint64_t *, size_t); - -/* userspace only supports the generic version */ -#if defined(__amd64) && defined(_KERNEL) -#define SHA512Transform(ctx, in) SHA512TransformBlocks((ctx), (in), 1) -#define SHA256Transform(ctx, in) SHA256TransformBlocks((ctx), (in), 1) - -void ASMABI SHA512TransformBlocks(SHA2_CTX *ctx, const void *in, size_t num); -void ASMABI SHA256TransformBlocks(SHA2_CTX *ctx, const void *in, size_t num); - -#else -static void SHA256Transform(SHA2_CTX *, const uint8_t *); -static void SHA512Transform(SHA2_CTX *, const uint8_t *); -#endif /* __amd64 && _KERNEL */ - -static const uint8_t PADDING[128] = { 0x80, /* all zeros */ }; - -/* - * The low-level checksum routines use a lot of stack space. On systems where - * small stacks are enforced (like 32-bit kernel builds), insert compiler memory - * barriers to reduce stack frame size. This can reduce the SHA512Transform() - * stack frame usage from 3k to <1k on ARM32, for example. - */ -#if defined(_ILP32) || defined(__powerpc) /* small stack */ -#define SMALL_STACK_MEMORY_BARRIER asm volatile("": : :"memory"); -#else -#define SMALL_STACK_MEMORY_BARRIER -#endif - -/* Ch and Maj are the basic SHA2 functions. */ -#define Ch(b, c, d) (((b) & (c)) ^ ((~b) & (d))) -#define Maj(b, c, d) (((b) & (c)) ^ ((b) & (d)) ^ ((c) & (d))) - -/* Rotates x right n bits. */ -#define ROTR(x, n) \ - (((x) >> (n)) | ((x) << ((sizeof (x) * NBBY)-(n)))) - -/* Shift x right n bits */ -#define SHR(x, n) ((x) >> (n)) - -/* SHA256 Functions */ -#define BIGSIGMA0_256(x) (ROTR((x), 2) ^ ROTR((x), 13) ^ ROTR((x), 22)) -#define BIGSIGMA1_256(x) (ROTR((x), 6) ^ ROTR((x), 11) ^ ROTR((x), 25)) -#define SIGMA0_256(x) (ROTR((x), 7) ^ ROTR((x), 18) ^ SHR((x), 3)) -#define SIGMA1_256(x) (ROTR((x), 17) ^ ROTR((x), 19) ^ SHR((x), 10)) - -#define SHA256ROUND(a, b, c, d, e, f, g, h, i, w) \ - T1 = h + BIGSIGMA1_256(e) + Ch(e, f, g) + SHA256_CONST(i) + w; \ - d += T1; \ - T2 = BIGSIGMA0_256(a) + Maj(a, b, c); \ - h = T1 + T2 - -/* SHA384/512 Functions */ -#define BIGSIGMA0(x) (ROTR((x), 28) ^ ROTR((x), 34) ^ ROTR((x), 39)) -#define BIGSIGMA1(x) (ROTR((x), 14) ^ ROTR((x), 18) ^ ROTR((x), 41)) -#define SIGMA0(x) (ROTR((x), 1) ^ ROTR((x), 8) ^ SHR((x), 7)) -#define SIGMA1(x) (ROTR((x), 19) ^ ROTR((x), 61) ^ SHR((x), 6)) -#define SHA512ROUND(a, b, c, d, e, f, g, h, i, w) \ - T1 = h + BIGSIGMA1(e) + Ch(e, f, g) + SHA512_CONST(i) + w; \ - d += T1; \ - T2 = BIGSIGMA0(a) + Maj(a, b, c); \ - h = T1 + T2; \ - SMALL_STACK_MEMORY_BARRIER; - -/* - * sparc optimization: - * - * on the sparc, we can load big endian 32-bit data easily. note that - * special care must be taken to ensure the address is 32-bit aligned. - * in the interest of speed, we don't check to make sure, since - * careful programming can guarantee this for us. - */ - -#if defined(_ZFS_BIG_ENDIAN) -#define LOAD_BIG_32(addr) (*(uint32_t *)(addr)) -#define LOAD_BIG_64(addr) (*(uint64_t *)(addr)) - -#elif defined(HAVE_HTONL) -#define LOAD_BIG_32(addr) htonl(*((uint32_t *)(addr))) -#define LOAD_BIG_64(addr) htonll(*((uint64_t *)(addr))) - -#else -/* little endian -- will work on big endian, but slowly */ -#define LOAD_BIG_32(addr) \ - (((addr)[0] << 24) | ((addr)[1] << 16) | ((addr)[2] << 8) | (addr)[3]) -#define LOAD_BIG_64(addr) \ - (((uint64_t)(addr)[0] << 56) | ((uint64_t)(addr)[1] << 48) | \ - ((uint64_t)(addr)[2] << 40) | ((uint64_t)(addr)[3] << 32) | \ - ((uint64_t)(addr)[4] << 24) | ((uint64_t)(addr)[5] << 16) | \ - ((uint64_t)(addr)[6] << 8) | (uint64_t)(addr)[7]) -#endif /* _BIG_ENDIAN */ - - -#if !defined(__amd64) || !defined(_KERNEL) -/* SHA256 Transform */ - -static void -SHA256Transform(SHA2_CTX *ctx, const uint8_t *blk) -{ - uint32_t a = ctx->state.s32[0]; - uint32_t b = ctx->state.s32[1]; - uint32_t c = ctx->state.s32[2]; - uint32_t d = ctx->state.s32[3]; - uint32_t e = ctx->state.s32[4]; - uint32_t f = ctx->state.s32[5]; - uint32_t g = ctx->state.s32[6]; - uint32_t h = ctx->state.s32[7]; - - uint32_t w0, w1, w2, w3, w4, w5, w6, w7; - uint32_t w8, w9, w10, w11, w12, w13, w14, w15; - uint32_t T1, T2; - -#if defined(__sparc) - static const uint32_t sha256_consts[] = { - SHA256_CONST_0, SHA256_CONST_1, SHA256_CONST_2, - SHA256_CONST_3, SHA256_CONST_4, SHA256_CONST_5, - SHA256_CONST_6, SHA256_CONST_7, SHA256_CONST_8, - SHA256_CONST_9, SHA256_CONST_10, SHA256_CONST_11, - SHA256_CONST_12, SHA256_CONST_13, SHA256_CONST_14, - SHA256_CONST_15, SHA256_CONST_16, SHA256_CONST_17, - SHA256_CONST_18, SHA256_CONST_19, SHA256_CONST_20, - SHA256_CONST_21, SHA256_CONST_22, SHA256_CONST_23, - SHA256_CONST_24, SHA256_CONST_25, SHA256_CONST_26, - SHA256_CONST_27, SHA256_CONST_28, SHA256_CONST_29, - SHA256_CONST_30, SHA256_CONST_31, SHA256_CONST_32, - SHA256_CONST_33, SHA256_CONST_34, SHA256_CONST_35, - SHA256_CONST_36, SHA256_CONST_37, SHA256_CONST_38, - SHA256_CONST_39, SHA256_CONST_40, SHA256_CONST_41, - SHA256_CONST_42, SHA256_CONST_43, SHA256_CONST_44, - SHA256_CONST_45, SHA256_CONST_46, SHA256_CONST_47, - SHA256_CONST_48, SHA256_CONST_49, SHA256_CONST_50, - SHA256_CONST_51, SHA256_CONST_52, SHA256_CONST_53, - SHA256_CONST_54, SHA256_CONST_55, SHA256_CONST_56, - SHA256_CONST_57, SHA256_CONST_58, SHA256_CONST_59, - SHA256_CONST_60, SHA256_CONST_61, SHA256_CONST_62, - SHA256_CONST_63 - }; -#endif /* __sparc */ - - if ((uintptr_t)blk & 0x3) { /* not 4-byte aligned? */ - memcpy(ctx->buf_un.buf32, blk, sizeof (ctx->buf_un.buf32)); - blk = (uint8_t *)ctx->buf_un.buf32; - } - - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w0 = LOAD_BIG_32(blk + 4 * 0); - SHA256ROUND(a, b, c, d, e, f, g, h, 0, w0); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w1 = LOAD_BIG_32(blk + 4 * 1); - SHA256ROUND(h, a, b, c, d, e, f, g, 1, w1); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w2 = LOAD_BIG_32(blk + 4 * 2); - SHA256ROUND(g, h, a, b, c, d, e, f, 2, w2); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w3 = LOAD_BIG_32(blk + 4 * 3); - SHA256ROUND(f, g, h, a, b, c, d, e, 3, w3); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w4 = LOAD_BIG_32(blk + 4 * 4); - SHA256ROUND(e, f, g, h, a, b, c, d, 4, w4); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w5 = LOAD_BIG_32(blk + 4 * 5); - SHA256ROUND(d, e, f, g, h, a, b, c, 5, w5); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w6 = LOAD_BIG_32(blk + 4 * 6); - SHA256ROUND(c, d, e, f, g, h, a, b, 6, w6); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w7 = LOAD_BIG_32(blk + 4 * 7); - SHA256ROUND(b, c, d, e, f, g, h, a, 7, w7); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w8 = LOAD_BIG_32(blk + 4 * 8); - SHA256ROUND(a, b, c, d, e, f, g, h, 8, w8); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w9 = LOAD_BIG_32(blk + 4 * 9); - SHA256ROUND(h, a, b, c, d, e, f, g, 9, w9); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w10 = LOAD_BIG_32(blk + 4 * 10); - SHA256ROUND(g, h, a, b, c, d, e, f, 10, w10); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w11 = LOAD_BIG_32(blk + 4 * 11); - SHA256ROUND(f, g, h, a, b, c, d, e, 11, w11); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w12 = LOAD_BIG_32(blk + 4 * 12); - SHA256ROUND(e, f, g, h, a, b, c, d, 12, w12); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w13 = LOAD_BIG_32(blk + 4 * 13); - SHA256ROUND(d, e, f, g, h, a, b, c, 13, w13); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w14 = LOAD_BIG_32(blk + 4 * 14); - SHA256ROUND(c, d, e, f, g, h, a, b, 14, w14); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w15 = LOAD_BIG_32(blk + 4 * 15); - SHA256ROUND(b, c, d, e, f, g, h, a, 15, w15); - - w0 = SIGMA1_256(w14) + w9 + SIGMA0_256(w1) + w0; - SHA256ROUND(a, b, c, d, e, f, g, h, 16, w0); - w1 = SIGMA1_256(w15) + w10 + SIGMA0_256(w2) + w1; - SHA256ROUND(h, a, b, c, d, e, f, g, 17, w1); - w2 = SIGMA1_256(w0) + w11 + SIGMA0_256(w3) + w2; - SHA256ROUND(g, h, a, b, c, d, e, f, 18, w2); - w3 = SIGMA1_256(w1) + w12 + SIGMA0_256(w4) + w3; - SHA256ROUND(f, g, h, a, b, c, d, e, 19, w3); - w4 = SIGMA1_256(w2) + w13 + SIGMA0_256(w5) + w4; - SHA256ROUND(e, f, g, h, a, b, c, d, 20, w4); - w5 = SIGMA1_256(w3) + w14 + SIGMA0_256(w6) + w5; - SHA256ROUND(d, e, f, g, h, a, b, c, 21, w5); - w6 = SIGMA1_256(w4) + w15 + SIGMA0_256(w7) + w6; - SHA256ROUND(c, d, e, f, g, h, a, b, 22, w6); - w7 = SIGMA1_256(w5) + w0 + SIGMA0_256(w8) + w7; - SHA256ROUND(b, c, d, e, f, g, h, a, 23, w7); - w8 = SIGMA1_256(w6) + w1 + SIGMA0_256(w9) + w8; - SHA256ROUND(a, b, c, d, e, f, g, h, 24, w8); - w9 = SIGMA1_256(w7) + w2 + SIGMA0_256(w10) + w9; - SHA256ROUND(h, a, b, c, d, e, f, g, 25, w9); - w10 = SIGMA1_256(w8) + w3 + SIGMA0_256(w11) + w10; - SHA256ROUND(g, h, a, b, c, d, e, f, 26, w10); - w11 = SIGMA1_256(w9) + w4 + SIGMA0_256(w12) + w11; - SHA256ROUND(f, g, h, a, b, c, d, e, 27, w11); - w12 = SIGMA1_256(w10) + w5 + SIGMA0_256(w13) + w12; - SHA256ROUND(e, f, g, h, a, b, c, d, 28, w12); - w13 = SIGMA1_256(w11) + w6 + SIGMA0_256(w14) + w13; - SHA256ROUND(d, e, f, g, h, a, b, c, 29, w13); - w14 = SIGMA1_256(w12) + w7 + SIGMA0_256(w15) + w14; - SHA256ROUND(c, d, e, f, g, h, a, b, 30, w14); - w15 = SIGMA1_256(w13) + w8 + SIGMA0_256(w0) + w15; - SHA256ROUND(b, c, d, e, f, g, h, a, 31, w15); - - w0 = SIGMA1_256(w14) + w9 + SIGMA0_256(w1) + w0; - SHA256ROUND(a, b, c, d, e, f, g, h, 32, w0); - w1 = SIGMA1_256(w15) + w10 + SIGMA0_256(w2) + w1; - SHA256ROUND(h, a, b, c, d, e, f, g, 33, w1); - w2 = SIGMA1_256(w0) + w11 + SIGMA0_256(w3) + w2; - SHA256ROUND(g, h, a, b, c, d, e, f, 34, w2); - w3 = SIGMA1_256(w1) + w12 + SIGMA0_256(w4) + w3; - SHA256ROUND(f, g, h, a, b, c, d, e, 35, w3); - w4 = SIGMA1_256(w2) + w13 + SIGMA0_256(w5) + w4; - SHA256ROUND(e, f, g, h, a, b, c, d, 36, w4); - w5 = SIGMA1_256(w3) + w14 + SIGMA0_256(w6) + w5; - SHA256ROUND(d, e, f, g, h, a, b, c, 37, w5); - w6 = SIGMA1_256(w4) + w15 + SIGMA0_256(w7) + w6; - SHA256ROUND(c, d, e, f, g, h, a, b, 38, w6); - w7 = SIGMA1_256(w5) + w0 + SIGMA0_256(w8) + w7; - SHA256ROUND(b, c, d, e, f, g, h, a, 39, w7); - w8 = SIGMA1_256(w6) + w1 + SIGMA0_256(w9) + w8; - SHA256ROUND(a, b, c, d, e, f, g, h, 40, w8); - w9 = SIGMA1_256(w7) + w2 + SIGMA0_256(w10) + w9; - SHA256ROUND(h, a, b, c, d, e, f, g, 41, w9); - w10 = SIGMA1_256(w8) + w3 + SIGMA0_256(w11) + w10; - SHA256ROUND(g, h, a, b, c, d, e, f, 42, w10); - w11 = SIGMA1_256(w9) + w4 + SIGMA0_256(w12) + w11; - SHA256ROUND(f, g, h, a, b, c, d, e, 43, w11); - w12 = SIGMA1_256(w10) + w5 + SIGMA0_256(w13) + w12; - SHA256ROUND(e, f, g, h, a, b, c, d, 44, w12); - w13 = SIGMA1_256(w11) + w6 + SIGMA0_256(w14) + w13; - SHA256ROUND(d, e, f, g, h, a, b, c, 45, w13); - w14 = SIGMA1_256(w12) + w7 + SIGMA0_256(w15) + w14; - SHA256ROUND(c, d, e, f, g, h, a, b, 46, w14); - w15 = SIGMA1_256(w13) + w8 + SIGMA0_256(w0) + w15; - SHA256ROUND(b, c, d, e, f, g, h, a, 47, w15); - - w0 = SIGMA1_256(w14) + w9 + SIGMA0_256(w1) + w0; - SHA256ROUND(a, b, c, d, e, f, g, h, 48, w0); - w1 = SIGMA1_256(w15) + w10 + SIGMA0_256(w2) + w1; - SHA256ROUND(h, a, b, c, d, e, f, g, 49, w1); - w2 = SIGMA1_256(w0) + w11 + SIGMA0_256(w3) + w2; - SHA256ROUND(g, h, a, b, c, d, e, f, 50, w2); - w3 = SIGMA1_256(w1) + w12 + SIGMA0_256(w4) + w3; - SHA256ROUND(f, g, h, a, b, c, d, e, 51, w3); - w4 = SIGMA1_256(w2) + w13 + SIGMA0_256(w5) + w4; - SHA256ROUND(e, f, g, h, a, b, c, d, 52, w4); - w5 = SIGMA1_256(w3) + w14 + SIGMA0_256(w6) + w5; - SHA256ROUND(d, e, f, g, h, a, b, c, 53, w5); - w6 = SIGMA1_256(w4) + w15 + SIGMA0_256(w7) + w6; - SHA256ROUND(c, d, e, f, g, h, a, b, 54, w6); - w7 = SIGMA1_256(w5) + w0 + SIGMA0_256(w8) + w7; - SHA256ROUND(b, c, d, e, f, g, h, a, 55, w7); - w8 = SIGMA1_256(w6) + w1 + SIGMA0_256(w9) + w8; - SHA256ROUND(a, b, c, d, e, f, g, h, 56, w8); - w9 = SIGMA1_256(w7) + w2 + SIGMA0_256(w10) + w9; - SHA256ROUND(h, a, b, c, d, e, f, g, 57, w9); - w10 = SIGMA1_256(w8) + w3 + SIGMA0_256(w11) + w10; - SHA256ROUND(g, h, a, b, c, d, e, f, 58, w10); - w11 = SIGMA1_256(w9) + w4 + SIGMA0_256(w12) + w11; - SHA256ROUND(f, g, h, a, b, c, d, e, 59, w11); - w12 = SIGMA1_256(w10) + w5 + SIGMA0_256(w13) + w12; - SHA256ROUND(e, f, g, h, a, b, c, d, 60, w12); - w13 = SIGMA1_256(w11) + w6 + SIGMA0_256(w14) + w13; - SHA256ROUND(d, e, f, g, h, a, b, c, 61, w13); - w14 = SIGMA1_256(w12) + w7 + SIGMA0_256(w15) + w14; - SHA256ROUND(c, d, e, f, g, h, a, b, 62, w14); - w15 = SIGMA1_256(w13) + w8 + SIGMA0_256(w0) + w15; - SHA256ROUND(b, c, d, e, f, g, h, a, 63, w15); - - ctx->state.s32[0] += a; - ctx->state.s32[1] += b; - ctx->state.s32[2] += c; - ctx->state.s32[3] += d; - ctx->state.s32[4] += e; - ctx->state.s32[5] += f; - ctx->state.s32[6] += g; - ctx->state.s32[7] += h; -} - - -/* SHA384 and SHA512 Transform */ - -static void -SHA512Transform(SHA2_CTX *ctx, const uint8_t *blk) -{ - - uint64_t a = ctx->state.s64[0]; - uint64_t b = ctx->state.s64[1]; - uint64_t c = ctx->state.s64[2]; - uint64_t d = ctx->state.s64[3]; - uint64_t e = ctx->state.s64[4]; - uint64_t f = ctx->state.s64[5]; - uint64_t g = ctx->state.s64[6]; - uint64_t h = ctx->state.s64[7]; - - uint64_t w0, w1, w2, w3, w4, w5, w6, w7; - uint64_t w8, w9, w10, w11, w12, w13, w14, w15; - uint64_t T1, T2; - -#if defined(__sparc) - static const uint64_t sha512_consts[] = { - SHA512_CONST_0, SHA512_CONST_1, SHA512_CONST_2, - SHA512_CONST_3, SHA512_CONST_4, SHA512_CONST_5, - SHA512_CONST_6, SHA512_CONST_7, SHA512_CONST_8, - SHA512_CONST_9, SHA512_CONST_10, SHA512_CONST_11, - SHA512_CONST_12, SHA512_CONST_13, SHA512_CONST_14, - SHA512_CONST_15, SHA512_CONST_16, SHA512_CONST_17, - SHA512_CONST_18, SHA512_CONST_19, SHA512_CONST_20, - SHA512_CONST_21, SHA512_CONST_22, SHA512_CONST_23, - SHA512_CONST_24, SHA512_CONST_25, SHA512_CONST_26, - SHA512_CONST_27, SHA512_CONST_28, SHA512_CONST_29, - SHA512_CONST_30, SHA512_CONST_31, SHA512_CONST_32, - SHA512_CONST_33, SHA512_CONST_34, SHA512_CONST_35, - SHA512_CONST_36, SHA512_CONST_37, SHA512_CONST_38, - SHA512_CONST_39, SHA512_CONST_40, SHA512_CONST_41, - SHA512_CONST_42, SHA512_CONST_43, SHA512_CONST_44, - SHA512_CONST_45, SHA512_CONST_46, SHA512_CONST_47, - SHA512_CONST_48, SHA512_CONST_49, SHA512_CONST_50, - SHA512_CONST_51, SHA512_CONST_52, SHA512_CONST_53, - SHA512_CONST_54, SHA512_CONST_55, SHA512_CONST_56, - SHA512_CONST_57, SHA512_CONST_58, SHA512_CONST_59, - SHA512_CONST_60, SHA512_CONST_61, SHA512_CONST_62, - SHA512_CONST_63, SHA512_CONST_64, SHA512_CONST_65, - SHA512_CONST_66, SHA512_CONST_67, SHA512_CONST_68, - SHA512_CONST_69, SHA512_CONST_70, SHA512_CONST_71, - SHA512_CONST_72, SHA512_CONST_73, SHA512_CONST_74, - SHA512_CONST_75, SHA512_CONST_76, SHA512_CONST_77, - SHA512_CONST_78, SHA512_CONST_79 - }; -#endif /* __sparc */ - - - if ((uintptr_t)blk & 0x7) { /* not 8-byte aligned? */ - memcpy(ctx->buf_un.buf64, blk, sizeof (ctx->buf_un.buf64)); - blk = (uint8_t *)ctx->buf_un.buf64; - } - - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w0 = LOAD_BIG_64(blk + 8 * 0); - SHA512ROUND(a, b, c, d, e, f, g, h, 0, w0); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w1 = LOAD_BIG_64(blk + 8 * 1); - SHA512ROUND(h, a, b, c, d, e, f, g, 1, w1); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w2 = LOAD_BIG_64(blk + 8 * 2); - SHA512ROUND(g, h, a, b, c, d, e, f, 2, w2); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w3 = LOAD_BIG_64(blk + 8 * 3); - SHA512ROUND(f, g, h, a, b, c, d, e, 3, w3); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w4 = LOAD_BIG_64(blk + 8 * 4); - SHA512ROUND(e, f, g, h, a, b, c, d, 4, w4); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w5 = LOAD_BIG_64(blk + 8 * 5); - SHA512ROUND(d, e, f, g, h, a, b, c, 5, w5); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w6 = LOAD_BIG_64(blk + 8 * 6); - SHA512ROUND(c, d, e, f, g, h, a, b, 6, w6); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w7 = LOAD_BIG_64(blk + 8 * 7); - SHA512ROUND(b, c, d, e, f, g, h, a, 7, w7); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w8 = LOAD_BIG_64(blk + 8 * 8); - SHA512ROUND(a, b, c, d, e, f, g, h, 8, w8); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w9 = LOAD_BIG_64(blk + 8 * 9); - SHA512ROUND(h, a, b, c, d, e, f, g, 9, w9); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w10 = LOAD_BIG_64(blk + 8 * 10); - SHA512ROUND(g, h, a, b, c, d, e, f, 10, w10); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w11 = LOAD_BIG_64(blk + 8 * 11); - SHA512ROUND(f, g, h, a, b, c, d, e, 11, w11); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w12 = LOAD_BIG_64(blk + 8 * 12); - SHA512ROUND(e, f, g, h, a, b, c, d, 12, w12); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w13 = LOAD_BIG_64(blk + 8 * 13); - SHA512ROUND(d, e, f, g, h, a, b, c, 13, w13); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w14 = LOAD_BIG_64(blk + 8 * 14); - SHA512ROUND(c, d, e, f, g, h, a, b, 14, w14); - /* LINTED E_BAD_PTR_CAST_ALIGN */ - w15 = LOAD_BIG_64(blk + 8 * 15); - SHA512ROUND(b, c, d, e, f, g, h, a, 15, w15); - - w0 = SIGMA1(w14) + w9 + SIGMA0(w1) + w0; - SHA512ROUND(a, b, c, d, e, f, g, h, 16, w0); - w1 = SIGMA1(w15) + w10 + SIGMA0(w2) + w1; - SHA512ROUND(h, a, b, c, d, e, f, g, 17, w1); - w2 = SIGMA1(w0) + w11 + SIGMA0(w3) + w2; - SHA512ROUND(g, h, a, b, c, d, e, f, 18, w2); - w3 = SIGMA1(w1) + w12 + SIGMA0(w4) + w3; - SHA512ROUND(f, g, h, a, b, c, d, e, 19, w3); - w4 = SIGMA1(w2) + w13 + SIGMA0(w5) + w4; - SHA512ROUND(e, f, g, h, a, b, c, d, 20, w4); - w5 = SIGMA1(w3) + w14 + SIGMA0(w6) + w5; - SHA512ROUND(d, e, f, g, h, a, b, c, 21, w5); - w6 = SIGMA1(w4) + w15 + SIGMA0(w7) + w6; - SHA512ROUND(c, d, e, f, g, h, a, b, 22, w6); - w7 = SIGMA1(w5) + w0 + SIGMA0(w8) + w7; - SHA512ROUND(b, c, d, e, f, g, h, a, 23, w7); - w8 = SIGMA1(w6) + w1 + SIGMA0(w9) + w8; - SHA512ROUND(a, b, c, d, e, f, g, h, 24, w8); - w9 = SIGMA1(w7) + w2 + SIGMA0(w10) + w9; - SHA512ROUND(h, a, b, c, d, e, f, g, 25, w9); - w10 = SIGMA1(w8) + w3 + SIGMA0(w11) + w10; - SHA512ROUND(g, h, a, b, c, d, e, f, 26, w10); - w11 = SIGMA1(w9) + w4 + SIGMA0(w12) + w11; - SHA512ROUND(f, g, h, a, b, c, d, e, 27, w11); - w12 = SIGMA1(w10) + w5 + SIGMA0(w13) + w12; - SHA512ROUND(e, f, g, h, a, b, c, d, 28, w12); - w13 = SIGMA1(w11) + w6 + SIGMA0(w14) + w13; - SHA512ROUND(d, e, f, g, h, a, b, c, 29, w13); - w14 = SIGMA1(w12) + w7 + SIGMA0(w15) + w14; - SHA512ROUND(c, d, e, f, g, h, a, b, 30, w14); - w15 = SIGMA1(w13) + w8 + SIGMA0(w0) + w15; - SHA512ROUND(b, c, d, e, f, g, h, a, 31, w15); - - w0 = SIGMA1(w14) + w9 + SIGMA0(w1) + w0; - SHA512ROUND(a, b, c, d, e, f, g, h, 32, w0); - w1 = SIGMA1(w15) + w10 + SIGMA0(w2) + w1; - SHA512ROUND(h, a, b, c, d, e, f, g, 33, w1); - w2 = SIGMA1(w0) + w11 + SIGMA0(w3) + w2; - SHA512ROUND(g, h, a, b, c, d, e, f, 34, w2); - w3 = SIGMA1(w1) + w12 + SIGMA0(w4) + w3; - SHA512ROUND(f, g, h, a, b, c, d, e, 35, w3); - w4 = SIGMA1(w2) + w13 + SIGMA0(w5) + w4; - SHA512ROUND(e, f, g, h, a, b, c, d, 36, w4); - w5 = SIGMA1(w3) + w14 + SIGMA0(w6) + w5; - SHA512ROUND(d, e, f, g, h, a, b, c, 37, w5); - w6 = SIGMA1(w4) + w15 + SIGMA0(w7) + w6; - SHA512ROUND(c, d, e, f, g, h, a, b, 38, w6); - w7 = SIGMA1(w5) + w0 + SIGMA0(w8) + w7; - SHA512ROUND(b, c, d, e, f, g, h, a, 39, w7); - w8 = SIGMA1(w6) + w1 + SIGMA0(w9) + w8; - SHA512ROUND(a, b, c, d, e, f, g, h, 40, w8); - w9 = SIGMA1(w7) + w2 + SIGMA0(w10) + w9; - SHA512ROUND(h, a, b, c, d, e, f, g, 41, w9); - w10 = SIGMA1(w8) + w3 + SIGMA0(w11) + w10; - SHA512ROUND(g, h, a, b, c, d, e, f, 42, w10); - w11 = SIGMA1(w9) + w4 + SIGMA0(w12) + w11; - SHA512ROUND(f, g, h, a, b, c, d, e, 43, w11); - w12 = SIGMA1(w10) + w5 + SIGMA0(w13) + w12; - SHA512ROUND(e, f, g, h, a, b, c, d, 44, w12); - w13 = SIGMA1(w11) + w6 + SIGMA0(w14) + w13; - SHA512ROUND(d, e, f, g, h, a, b, c, 45, w13); - w14 = SIGMA1(w12) + w7 + SIGMA0(w15) + w14; - SHA512ROUND(c, d, e, f, g, h, a, b, 46, w14); - w15 = SIGMA1(w13) + w8 + SIGMA0(w0) + w15; - SHA512ROUND(b, c, d, e, f, g, h, a, 47, w15); - - w0 = SIGMA1(w14) + w9 + SIGMA0(w1) + w0; - SHA512ROUND(a, b, c, d, e, f, g, h, 48, w0); - w1 = SIGMA1(w15) + w10 + SIGMA0(w2) + w1; - SHA512ROUND(h, a, b, c, d, e, f, g, 49, w1); - w2 = SIGMA1(w0) + w11 + SIGMA0(w3) + w2; - SHA512ROUND(g, h, a, b, c, d, e, f, 50, w2); - w3 = SIGMA1(w1) + w12 + SIGMA0(w4) + w3; - SHA512ROUND(f, g, h, a, b, c, d, e, 51, w3); - w4 = SIGMA1(w2) + w13 + SIGMA0(w5) + w4; - SHA512ROUND(e, f, g, h, a, b, c, d, 52, w4); - w5 = SIGMA1(w3) + w14 + SIGMA0(w6) + w5; - SHA512ROUND(d, e, f, g, h, a, b, c, 53, w5); - w6 = SIGMA1(w4) + w15 + SIGMA0(w7) + w6; - SHA512ROUND(c, d, e, f, g, h, a, b, 54, w6); - w7 = SIGMA1(w5) + w0 + SIGMA0(w8) + w7; - SHA512ROUND(b, c, d, e, f, g, h, a, 55, w7); - w8 = SIGMA1(w6) + w1 + SIGMA0(w9) + w8; - SHA512ROUND(a, b, c, d, e, f, g, h, 56, w8); - w9 = SIGMA1(w7) + w2 + SIGMA0(w10) + w9; - SHA512ROUND(h, a, b, c, d, e, f, g, 57, w9); - w10 = SIGMA1(w8) + w3 + SIGMA0(w11) + w10; - SHA512ROUND(g, h, a, b, c, d, e, f, 58, w10); - w11 = SIGMA1(w9) + w4 + SIGMA0(w12) + w11; - SHA512ROUND(f, g, h, a, b, c, d, e, 59, w11); - w12 = SIGMA1(w10) + w5 + SIGMA0(w13) + w12; - SHA512ROUND(e, f, g, h, a, b, c, d, 60, w12); - w13 = SIGMA1(w11) + w6 + SIGMA0(w14) + w13; - SHA512ROUND(d, e, f, g, h, a, b, c, 61, w13); - w14 = SIGMA1(w12) + w7 + SIGMA0(w15) + w14; - SHA512ROUND(c, d, e, f, g, h, a, b, 62, w14); - w15 = SIGMA1(w13) + w8 + SIGMA0(w0) + w15; - SHA512ROUND(b, c, d, e, f, g, h, a, 63, w15); - - w0 = SIGMA1(w14) + w9 + SIGMA0(w1) + w0; - SHA512ROUND(a, b, c, d, e, f, g, h, 64, w0); - w1 = SIGMA1(w15) + w10 + SIGMA0(w2) + w1; - SHA512ROUND(h, a, b, c, d, e, f, g, 65, w1); - w2 = SIGMA1(w0) + w11 + SIGMA0(w3) + w2; - SHA512ROUND(g, h, a, b, c, d, e, f, 66, w2); - w3 = SIGMA1(w1) + w12 + SIGMA0(w4) + w3; - SHA512ROUND(f, g, h, a, b, c, d, e, 67, w3); - w4 = SIGMA1(w2) + w13 + SIGMA0(w5) + w4; - SHA512ROUND(e, f, g, h, a, b, c, d, 68, w4); - w5 = SIGMA1(w3) + w14 + SIGMA0(w6) + w5; - SHA512ROUND(d, e, f, g, h, a, b, c, 69, w5); - w6 = SIGMA1(w4) + w15 + SIGMA0(w7) + w6; - SHA512ROUND(c, d, e, f, g, h, a, b, 70, w6); - w7 = SIGMA1(w5) + w0 + SIGMA0(w8) + w7; - SHA512ROUND(b, c, d, e, f, g, h, a, 71, w7); - w8 = SIGMA1(w6) + w1 + SIGMA0(w9) + w8; - SHA512ROUND(a, b, c, d, e, f, g, h, 72, w8); - w9 = SIGMA1(w7) + w2 + SIGMA0(w10) + w9; - SHA512ROUND(h, a, b, c, d, e, f, g, 73, w9); - w10 = SIGMA1(w8) + w3 + SIGMA0(w11) + w10; - SHA512ROUND(g, h, a, b, c, d, e, f, 74, w10); - w11 = SIGMA1(w9) + w4 + SIGMA0(w12) + w11; - SHA512ROUND(f, g, h, a, b, c, d, e, 75, w11); - w12 = SIGMA1(w10) + w5 + SIGMA0(w13) + w12; - SHA512ROUND(e, f, g, h, a, b, c, d, 76, w12); - w13 = SIGMA1(w11) + w6 + SIGMA0(w14) + w13; - SHA512ROUND(d, e, f, g, h, a, b, c, 77, w13); - w14 = SIGMA1(w12) + w7 + SIGMA0(w15) + w14; - SHA512ROUND(c, d, e, f, g, h, a, b, 78, w14); - w15 = SIGMA1(w13) + w8 + SIGMA0(w0) + w15; - SHA512ROUND(b, c, d, e, f, g, h, a, 79, w15); - - ctx->state.s64[0] += a; - ctx->state.s64[1] += b; - ctx->state.s64[2] += c; - ctx->state.s64[3] += d; - ctx->state.s64[4] += e; - ctx->state.s64[5] += f; - ctx->state.s64[6] += g; - ctx->state.s64[7] += h; - -} -#endif /* !__amd64 || !_KERNEL */ - - -/* - * Encode() - * - * purpose: to convert a list of numbers from little endian to big endian - * input: uint8_t * : place to store the converted big endian numbers - * uint32_t * : place to get numbers to convert from - * size_t : the length of the input in bytes - * output: void - */ - -static void -Encode(uint8_t *_RESTRICT_KYWD output, uint32_t *_RESTRICT_KYWD input, - size_t len) -{ - size_t i, j; - -#if defined(__sparc) - if (IS_P2ALIGNED(output, sizeof (uint32_t))) { - for (i = 0, j = 0; j < len; i++, j += 4) { - /* LINTED E_BAD_PTR_CAST_ALIGN */ - *((uint32_t *)(output + j)) = input[i]; - } - } else { -#endif /* little endian -- will work on big endian, but slowly */ - for (i = 0, j = 0; j < len; i++, j += 4) { - output[j] = (input[i] >> 24) & 0xff; - output[j + 1] = (input[i] >> 16) & 0xff; - output[j + 2] = (input[i] >> 8) & 0xff; - output[j + 3] = input[i] & 0xff; - } -#if defined(__sparc) - } -#endif -} - -static void -Encode64(uint8_t *_RESTRICT_KYWD output, uint64_t *_RESTRICT_KYWD input, - size_t len) -{ - size_t i, j; - -#if defined(__sparc) - if (IS_P2ALIGNED(output, sizeof (uint64_t))) { - for (i = 0, j = 0; j < len; i++, j += 8) { - /* LINTED E_BAD_PTR_CAST_ALIGN */ - *((uint64_t *)(output + j)) = input[i]; - } - } else { -#endif /* little endian -- will work on big endian, but slowly */ - for (i = 0, j = 0; j < len; i++, j += 8) { - - output[j] = (input[i] >> 56) & 0xff; - output[j + 1] = (input[i] >> 48) & 0xff; - output[j + 2] = (input[i] >> 40) & 0xff; - output[j + 3] = (input[i] >> 32) & 0xff; - output[j + 4] = (input[i] >> 24) & 0xff; - output[j + 5] = (input[i] >> 16) & 0xff; - output[j + 6] = (input[i] >> 8) & 0xff; - output[j + 7] = input[i] & 0xff; - } -#if defined(__sparc) - } -#endif -} - - -void -SHA2Init(uint64_t mech, SHA2_CTX *ctx) -{ - - switch (mech) { - case SHA256_MECH_INFO_TYPE: - case SHA256_HMAC_MECH_INFO_TYPE: - case SHA256_HMAC_GEN_MECH_INFO_TYPE: - ctx->state.s32[0] = 0x6a09e667U; - ctx->state.s32[1] = 0xbb67ae85U; - ctx->state.s32[2] = 0x3c6ef372U; - ctx->state.s32[3] = 0xa54ff53aU; - ctx->state.s32[4] = 0x510e527fU; - ctx->state.s32[5] = 0x9b05688cU; - ctx->state.s32[6] = 0x1f83d9abU; - ctx->state.s32[7] = 0x5be0cd19U; - break; - case SHA384_MECH_INFO_TYPE: - case SHA384_HMAC_MECH_INFO_TYPE: - case SHA384_HMAC_GEN_MECH_INFO_TYPE: - ctx->state.s64[0] = 0xcbbb9d5dc1059ed8ULL; - ctx->state.s64[1] = 0x629a292a367cd507ULL; - ctx->state.s64[2] = 0x9159015a3070dd17ULL; - ctx->state.s64[3] = 0x152fecd8f70e5939ULL; - ctx->state.s64[4] = 0x67332667ffc00b31ULL; - ctx->state.s64[5] = 0x8eb44a8768581511ULL; - ctx->state.s64[6] = 0xdb0c2e0d64f98fa7ULL; - ctx->state.s64[7] = 0x47b5481dbefa4fa4ULL; - break; - case SHA512_MECH_INFO_TYPE: - case SHA512_HMAC_MECH_INFO_TYPE: - case SHA512_HMAC_GEN_MECH_INFO_TYPE: - ctx->state.s64[0] = 0x6a09e667f3bcc908ULL; - ctx->state.s64[1] = 0xbb67ae8584caa73bULL; - ctx->state.s64[2] = 0x3c6ef372fe94f82bULL; - ctx->state.s64[3] = 0xa54ff53a5f1d36f1ULL; - ctx->state.s64[4] = 0x510e527fade682d1ULL; - ctx->state.s64[5] = 0x9b05688c2b3e6c1fULL; - ctx->state.s64[6] = 0x1f83d9abfb41bd6bULL; - ctx->state.s64[7] = 0x5be0cd19137e2179ULL; - break; - case SHA512_224_MECH_INFO_TYPE: - ctx->state.s64[0] = 0x8C3D37C819544DA2ULL; - ctx->state.s64[1] = 0x73E1996689DCD4D6ULL; - ctx->state.s64[2] = 0x1DFAB7AE32FF9C82ULL; - ctx->state.s64[3] = 0x679DD514582F9FCFULL; - ctx->state.s64[4] = 0x0F6D2B697BD44DA8ULL; - ctx->state.s64[5] = 0x77E36F7304C48942ULL; - ctx->state.s64[6] = 0x3F9D85A86A1D36C8ULL; - ctx->state.s64[7] = 0x1112E6AD91D692A1ULL; - break; - case SHA512_256_MECH_INFO_TYPE: - ctx->state.s64[0] = 0x22312194FC2BF72CULL; - ctx->state.s64[1] = 0x9F555FA3C84C64C2ULL; - ctx->state.s64[2] = 0x2393B86B6F53B151ULL; - ctx->state.s64[3] = 0x963877195940EABDULL; - ctx->state.s64[4] = 0x96283EE2A88EFFE3ULL; - ctx->state.s64[5] = 0xBE5E1E2553863992ULL; - ctx->state.s64[6] = 0x2B0199FC2C85B8AAULL; - ctx->state.s64[7] = 0x0EB72DDC81C52CA2ULL; - break; -#ifdef _KERNEL - default: - cmn_err(CE_PANIC, - "sha2_init: failed to find a supported algorithm: 0x%x", - (uint32_t)mech); - -#endif /* _KERNEL */ - } - - ctx->algotype = (uint32_t)mech; - ctx->count.c64[0] = ctx->count.c64[1] = 0; -} - -#ifndef _KERNEL - -// #pragma inline(SHA256Init, SHA384Init, SHA512Init) -void -SHA256Init(SHA256_CTX *ctx) -{ - SHA2Init(SHA256, ctx); -} - -void -SHA384Init(SHA384_CTX *ctx) -{ - SHA2Init(SHA384, ctx); -} - -void -SHA512Init(SHA512_CTX *ctx) -{ - SHA2Init(SHA512, ctx); -} - -#endif /* _KERNEL */ - -/* - * SHA2Update() - * - * purpose: continues an sha2 digest operation, using the message block - * to update the context. - * input: SHA2_CTX * : the context to update - * void * : the message block - * size_t : the length of the message block, in bytes - * output: void - */ - -void -SHA2Update(SHA2_CTX *ctx, const void *inptr, size_t input_len) -{ - uint32_t i, buf_index, buf_len, buf_limit; - const uint8_t *input = inptr; - uint32_t algotype = ctx->algotype; - - /* check for noop */ - if (input_len == 0) - return; - - if (algotype <= SHA256_HMAC_GEN_MECH_INFO_TYPE) { - buf_limit = 64; - - /* compute number of bytes mod 64 */ - buf_index = (ctx->count.c32[1] >> 3) & 0x3F; - - /* update number of bits */ - if ((ctx->count.c32[1] += (input_len << 3)) < (input_len << 3)) - ctx->count.c32[0]++; - - ctx->count.c32[0] += (input_len >> 29); - - } else { - buf_limit = 128; - - /* compute number of bytes mod 128 */ - buf_index = (ctx->count.c64[1] >> 3) & 0x7F; - - /* update number of bits */ - if ((ctx->count.c64[1] += (input_len << 3)) < (input_len << 3)) - ctx->count.c64[0]++; - - ctx->count.c64[0] += (input_len >> 29); - } - - buf_len = buf_limit - buf_index; - - /* transform as many times as possible */ - i = 0; - if (input_len >= buf_len) { - - /* - * general optimization: - * - * only do initial memcpy() and SHA2Transform() if - * buf_index != 0. if buf_index == 0, we're just - * wasting our time doing the memcpy() since there - * wasn't any data left over from a previous call to - * SHA2Update(). - */ - if (buf_index) { - memcpy(&ctx->buf_un.buf8[buf_index], input, buf_len); - if (algotype <= SHA256_HMAC_GEN_MECH_INFO_TYPE) - SHA256Transform(ctx, ctx->buf_un.buf8); - else - SHA512Transform(ctx, ctx->buf_un.buf8); - - i = buf_len; - } - -#if !defined(__amd64) || !defined(_KERNEL) - if (algotype <= SHA256_HMAC_GEN_MECH_INFO_TYPE) { - for (; i + buf_limit - 1 < input_len; i += buf_limit) { - SHA256Transform(ctx, &input[i]); - } - } else { - for (; i + buf_limit - 1 < input_len; i += buf_limit) { - SHA512Transform(ctx, &input[i]); - } - } - -#else - uint32_t block_count; - if (algotype <= SHA256_HMAC_GEN_MECH_INFO_TYPE) { - block_count = (input_len - i) >> 6; - if (block_count > 0) { - SHA256TransformBlocks(ctx, &input[i], - block_count); - i += block_count << 6; - } - } else { - block_count = (input_len - i) >> 7; - if (block_count > 0) { - SHA512TransformBlocks(ctx, &input[i], - block_count); - i += block_count << 7; - } - } -#endif /* !__amd64 || !_KERNEL */ - - /* - * general optimization: - * - * if i and input_len are the same, return now instead - * of calling memcpy(), since the memcpy() in this case - * will be an expensive noop. - */ - - if (input_len == i) - return; - - buf_index = 0; - } - - /* buffer remaining input */ - memcpy(&ctx->buf_un.buf8[buf_index], &input[i], input_len - i); -} - - -/* - * SHA2Final() - * - * purpose: ends an sha2 digest operation, finalizing the message digest and - * zeroing the context. - * input: uchar_t * : a buffer to store the digest - * : The function actually uses void* because many - * : callers pass things other than uchar_t here. - * SHA2_CTX * : the context to finalize, save, and zero - * output: void - */ - -void -SHA2Final(void *digest, SHA2_CTX *ctx) -{ - uint8_t bitcount_be[sizeof (ctx->count.c32)]; - uint8_t bitcount_be64[sizeof (ctx->count.c64)]; - uint32_t index; - uint32_t algotype = ctx->algotype; - - if (algotype <= SHA256_HMAC_GEN_MECH_INFO_TYPE) { - index = (ctx->count.c32[1] >> 3) & 0x3f; - Encode(bitcount_be, ctx->count.c32, sizeof (bitcount_be)); - SHA2Update(ctx, PADDING, ((index < 56) ? 56 : 120) - index); - SHA2Update(ctx, bitcount_be, sizeof (bitcount_be)); - Encode(digest, ctx->state.s32, sizeof (ctx->state.s32)); - } else { - index = (ctx->count.c64[1] >> 3) & 0x7f; - Encode64(bitcount_be64, ctx->count.c64, - sizeof (bitcount_be64)); - SHA2Update(ctx, PADDING, ((index < 112) ? 112 : 240) - index); - SHA2Update(ctx, bitcount_be64, sizeof (bitcount_be64)); - if (algotype <= SHA384_HMAC_GEN_MECH_INFO_TYPE) { - ctx->state.s64[6] = ctx->state.s64[7] = 0; - Encode64(digest, ctx->state.s64, - sizeof (uint64_t) * 6); - } else if (algotype == SHA512_224_MECH_INFO_TYPE) { - uint8_t last[sizeof (uint64_t)]; - /* - * Since SHA-512/224 doesn't align well to 64-bit - * boundaries, we must do the encoding in three steps: - * 1) encode the three 64-bit words that fit neatly - * 2) encode the last 64-bit word to a temp buffer - * 3) chop out the lower 32-bits from the temp buffer - * and append them to the digest - */ - Encode64(digest, ctx->state.s64, sizeof (uint64_t) * 3); - Encode64(last, &ctx->state.s64[3], sizeof (uint64_t)); - memcpy((uint8_t *)digest + 24, last, 4); - } else if (algotype == SHA512_256_MECH_INFO_TYPE) { - Encode64(digest, ctx->state.s64, sizeof (uint64_t) * 4); - } else { - Encode64(digest, ctx->state.s64, - sizeof (ctx->state.s64)); - } - } - - /* zeroize sensitive information */ - memset(ctx, 0, sizeof (*ctx)); -} - -#ifdef _KERNEL -EXPORT_SYMBOL(SHA2Init); -EXPORT_SYMBOL(SHA2Update); -EXPORT_SYMBOL(SHA2Final); -#endif |