From a8e4dd08bb9e63d53c718149870a7644d06d23f2 Mon Sep 17 00:00:00 2001 From: EnderIce2 Date: Fri, 21 Mar 2025 03:15:57 +0000 Subject: [PATCH] feat(kernel): add SHA-512 implementation Signed-off-by: EnderIce2 --- Kernel/include/sha512.h | 44 ++++++++++ Kernel/library/sha512.c | 175 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 219 insertions(+) create mode 100644 Kernel/include/sha512.h create mode 100644 Kernel/library/sha512.c diff --git a/Kernel/include/sha512.h b/Kernel/include/sha512.h new file mode 100644 index 00000000..5576c8fa --- /dev/null +++ b/Kernel/include/sha512.h @@ -0,0 +1,44 @@ +/* + This file is part of Fennix Kernel. + + Fennix Kernel 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 3 of + the License, or (at your option) any later version. + + Fennix Kernel is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with Fennix Kernel. If not, see . +*/ + +#ifndef __FENNIX_KERNEL_SHA512_H__ +#define __FENNIX_KERNEL_SHA512_H__ + +#include + +#define SHA512_BLOCK_SIZE 128 +#define SHA512_DIGEST_SIZE 64 + +typedef struct +{ + uint64_t state[8]; + uint64_t bitlen; + uint8_t data[SHA512_BLOCK_SIZE]; + size_t datalen; +} SHA512_CTX; + +START_EXTERNC + +void sha512_transform(SHA512_CTX *ctx, const uint8_t *data); +void sha512_init(SHA512_CTX *ctx); +void sha512_update(SHA512_CTX *ctx, const uint8_t *data, size_t len); +void sha512_final(SHA512_CTX *ctx, uint8_t *hash); +uint8_t *sha512_sum(const uint8_t *input, size_t len); + +END_EXTERNC + +#endif // !__FENNIX_KERNEL_SHA512_H__ diff --git a/Kernel/library/sha512.c b/Kernel/library/sha512.c new file mode 100644 index 00000000..b5f10748 --- /dev/null +++ b/Kernel/library/sha512.c @@ -0,0 +1,175 @@ +/* + This file is part of Fennix Kernel. + + Fennix Kernel 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 3 of + the License, or (at your option) any later version. + + Fennix Kernel is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with Fennix Kernel. If not, see . +*/ + +#include + +#include +#include +#include + +static const uint64_t sha512_K[80] = { + 0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc, + 0x3956c25bf348b538, 0x59f111f1b605d019, 0x923f82a4af194f9b, 0xab1c5ed5da6d8118, + 0xd807aa98a3030242, 0x12835b0145706fbe, 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2, + 0x72be5d74f27b896f, 0x80deb1fe3b1696b1, 0x9bdc06a725c71235, 0xc19bf174cf692694, + 0xe49b69c19ef14ad2, 0xefbe4786384f25e3, 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65, + 0x2de92c6f592b0275, 0x4a7484aa6ea6e483, 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5, + 0x983e5152ee66dfab, 0xa831c66d2db43210, 0xb00327c898fb213f, 0xbf597fc7beef0ee4, + 0xc6e00bf33da88fc2, 0xd5a79147930aa725, 0x06ca6351e003826f, 0x142929670a0e6e70, + 0x27b70a8546d22ffc, 0x2e1b21385c26c926, 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df, + 0x650a73548baf63de, 0x766a0abb3c77b2a8, 0x81c2c92e47edaee6, 0x92722c851482353b, + 0xa2bfe8a14cf10364, 0xa81a664bbc423001, 0xc24b8b70d0f89791, 0xc76c51a30654be30, + 0xd192e819d6ef5218, 0xd69906245565a910, 0xf40e35855771202a, 0x106aa07032bbd1b8, + 0x19a4c116b8d2d0c8, 0x1e376c085141ab53, 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8, + 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb, 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3, + 0x748f82ee5defb2fc, 0x78a5636f43172f60, 0x84c87814a1f0ab72, 0x8cc702081a6439ec, + 0x90befffa23631e28, 0xa4506cebde82bde9, 0xbef9a3f7b2c67915, 0xc67178f2e372532b, + 0xca273eceea26619c, 0xd186b8c721c0c207, 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178, + 0x06f067aa72176fba, 0x0a637dc5a2c898a6, 0x113f9804bef90dae, 0x1b710b35131c471b, + 0x28db77f523047d84, 0x32caab7b40c72493, 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c, + 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a, 0x5fcb6fab3ad6faec, 0x6c44198c4a475817}; + +#define ROTR(x, n) ((x >> n) | (x << (64 - n))) + +#define CH(x, y, z) ((x & y) ^ (~x & z)) +#define MAJ(x, y, z) ((x & y) ^ (x & z) ^ (y & z)) +#define SIGMA0(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39)) +#define SIGMA1(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41)) +#define sigma0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ (x >> 7)) +#define sigma1(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ (x >> 6)) + +static const uint64_t sha512_H0[8] = { + 0x6a09e667f3bcc908, 0xbb67ae8584caa73b, 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1, + 0x510e527fade682d1, 0x9b05688c2b3e6c1f, 0x1f83d9abfb41bd6b, 0x5be0cd19137e2179}; + +void sha512_transform(SHA512_CTX *ctx, const uint8_t *data) +{ + uint64_t m[80], a, b, c, d, e, f, g, h, t1, t2; + size_t i; + + for (i = 0; i < 16; ++i) + { + m[i] = ((uint64_t)data[i * 8] << 56) | ((uint64_t)data[i * 8 + 1] << 48) | + ((uint64_t)data[i * 8 + 2] << 40) | ((uint64_t)data[i * 8 + 3] << 32) | + ((uint64_t)data[i * 8 + 4] << 24) | ((uint64_t)data[i * 8 + 5] << 16) | + ((uint64_t)data[i * 8 + 6] << 8) | ((uint64_t)data[i * 8 + 7]); + } + + for (; i < 80; ++i) + m[i] = sigma1(m[i - 2]) + m[i - 7] + sigma0(m[i - 15]) + m[i - 16]; + + a = ctx->state[0]; + b = ctx->state[1]; + c = ctx->state[2]; + d = ctx->state[3]; + e = ctx->state[4]; + f = ctx->state[5]; + g = ctx->state[6]; + h = ctx->state[7]; + + for (i = 0; i < 80; ++i) + { + t1 = h + SIGMA1(e) + CH(e, f, g) + sha512_K[i] + m[i]; + t2 = SIGMA0(a) + MAJ(a, b, c); + h = g; + g = f; + f = e; + e = d + t1; + d = c; + c = b; + b = a; + a = t1 + t2; + } + + ctx->state[0] += a; + ctx->state[1] += b; + ctx->state[2] += c; + ctx->state[3] += d; + ctx->state[4] += e; + ctx->state[5] += f; + ctx->state[6] += g; + ctx->state[7] += h; +} + +void sha512_init(SHA512_CTX *ctx) +{ + memcpy(ctx->state, sha512_H0, sizeof(sha512_H0)); + ctx->bitlen = 0; + ctx->datalen = 0; +} + +void sha512_update(SHA512_CTX *ctx, const uint8_t *data, size_t len) +{ + for (size_t i = 0; i < len; ++i) + { + ctx->data[ctx->datalen] = data[i]; + ctx->datalen++; + if (ctx->datalen != SHA512_BLOCK_SIZE) + continue; + + sha512_transform(ctx, ctx->data); + ctx->bitlen += ctx->datalen * 8; + ctx->datalen = 0; + } +} + +void sha512_final(SHA512_CTX *ctx, uint8_t *hash) +{ + ctx->bitlen += ctx->datalen * 8; + ctx->data[ctx->datalen++] = 0x80; + if (ctx->datalen > 112) + { + while (ctx->datalen < SHA512_BLOCK_SIZE) + ctx->data[ctx->datalen++] = 0x00; + sha512_transform(ctx, ctx->data); + ctx->datalen = 0; + } + + while (ctx->datalen < 112) + ctx->data[ctx->datalen++] = 0x00; + + for (size_t i = 0; i < 8; ++i) + ctx->data[127 - i] = ctx->bitlen >> (i * 8); + + sha512_transform(ctx, ctx->data); + + for (size_t i = 0; i < 8; ++i) + { + hash[i * 8] = (ctx->state[i] >> 56) & 0xff; + hash[i * 8 + 1] = (ctx->state[i] >> 48) & 0xff; + hash[i * 8 + 2] = (ctx->state[i] >> 40) & 0xff; + hash[i * 8 + 3] = (ctx->state[i] >> 32) & 0xff; + hash[i * 8 + 4] = (ctx->state[i] >> 24) & 0xff; + hash[i * 8 + 5] = (ctx->state[i] >> 16) & 0xff; + hash[i * 8 + 6] = (ctx->state[i] >> 8) & 0xff; + hash[i * 8 + 7] = ctx->state[i] & 0xff; + } +} + +uint8_t *sha512_sum(const uint8_t *input, size_t len) +{ + SHA512_CTX ctx; + uint8_t *hash = (uint8_t *)malloc(SHA512_DIGEST_SIZE); + if (!hash) + return NULL; + + sha512_init(&ctx); + sha512_update(&ctx, input, len); + sha512_final(&ctx, hash); + + return hash; +}