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authorGravatar Sadie Powell2024-07-17 00:06:50 +0100
committerGravatar Sadie Powell2024-07-17 00:06:50 +0100
commit889d521e05f2e922683d48c74eb00290e7a2f548 (patch)
treeb4c56bd4cdf0881601c7e4d6ff571e491af10bf4 /src/modules/m_sha1.cpp
parentUse std::endian from C++20 in the sha1 module. (diff)
Shuffle the modules about a bit.
Diffstat (limited to 'src/modules/m_sha1.cpp')
-rw-r--r--src/modules/m_sha1.cpp197
1 files changed, 0 insertions, 197 deletions
diff --git a/src/modules/m_sha1.cpp b/src/modules/m_sha1.cpp
deleted file mode 100644
index c18af9272..000000000
--- a/src/modules/m_sha1.cpp
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- * InspIRCd -- Internet Relay Chat Daemon
- *
- * Copyright (C) 2019-2021 Sadie Powell <sadie@witchery.services>
- * Copyright (C) 2016 Attila Molnar <attilamolnar@hush.com>
- *
- * This file is part of InspIRCd. InspIRCd 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, version 2.
- *
- * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
-SHA-1 in C
-By Steve Reid <steve@edmweb.com>
-100% Public Domain
-*/
-
-#include "inspircd.h"
-#include "modules/hash.h"
-
-union CHAR64LONG16
-{
- unsigned char c[64];
- uint32_t l[16];
-};
-
-inline static uint32_t rol(uint32_t value, uint32_t bits) { return (value << bits) | (value >> (32 - bits)); }
-
-// blk0() and blk() perform the initial expand.
-// I got the idea of expanding during the round function from SSLeay
-inline static uint32_t blk0(CHAR64LONG16& block, uint32_t i)
-{
- if constexpr (std::endian::native == std::endian::big)
- return block.l[i];
- else
- return block.l[i] = (rol(block.l[i], 24) & 0xFF00FF00) | (rol(block.l[i], 8) & 0x00FF00FF);
-}
-inline static uint32_t blk(CHAR64LONG16 &block, uint32_t i) { return block.l[i & 15] = rol(block.l[(i + 13) & 15] ^ block.l[(i + 8) & 15] ^ block.l[(i + 2) & 15] ^ block.l[i & 15],1); }
-
-// (R0+R1), R2, R3, R4 are the different operations used in SHA1
-inline static void R0(CHAR64LONG16& block, uint32_t v, uint32_t &w, uint32_t x, uint32_t y, uint32_t &z, uint32_t i) { z += ((w & (x ^ y)) ^ y) + blk0(block, i) + 0x5A827999 + rol(v, 5); w = rol(w, 30); }
-inline static void R1(CHAR64LONG16& block, uint32_t v, uint32_t &w, uint32_t x, uint32_t y, uint32_t &z, uint32_t i) { z += ((w & (x ^ y)) ^ y) + blk(block, i) + 0x5A827999 + rol(v, 5); w = rol(w, 30); }
-inline static void R2(CHAR64LONG16& block, uint32_t v, uint32_t &w, uint32_t x, uint32_t y, uint32_t &z, uint32_t i) { z += (w ^ x ^ y) + blk(block, i) + 0x6ED9EBA1 + rol(v, 5); w = rol(w, 30); }
-inline static void R3(CHAR64LONG16& block, uint32_t v, uint32_t &w, uint32_t x, uint32_t y, uint32_t &z, uint32_t i) { z += (((w | x) & y) | (w & x)) + blk(block, i) + 0x8F1BBCDC + rol(v, 5); w = rol(w, 30); }
-inline static void R4(CHAR64LONG16& block, uint32_t v, uint32_t &w, uint32_t x, uint32_t y, uint32_t &z, uint32_t i) { z += (w ^ x ^ y) + blk(block, i) + 0xCA62C1D6 + rol(v, 5); w = rol(w, 30); }
-
-static const uint32_t sha1_iv[5] =
-{
- 0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0
-};
-
-class SHA1Context final
-{
- uint32_t state[5];
- uint32_t count[2];
- unsigned char buffer[64];
- unsigned char digest[20];
-
- void Transform(const unsigned char buf[64])
- {
- uint32_t a, b, c, d, e;
-
- CHAR64LONG16 block;
- memcpy(block.c, buf, 64);
-
- // Copy state[] to working vars
- a = this->state[0];
- b = this->state[1];
- c = this->state[2];
- d = this->state[3];
- e = this->state[4];
-
- // 4 rounds of 20 operations each. Loop unrolled.
- R0(block, a, b, c, d, e, 0); R0(block, e, a, b, c, d, 1); R0(block, d, e, a, b, c, 2); R0(block, c, d, e, a, b, 3);
- R0(block, b, c, d, e, a, 4); R0(block, a, b, c, d, e, 5); R0(block, e, a, b, c, d, 6); R0(block, d, e, a, b, c, 7);
- R0(block, c, d, e, a, b, 8); R0(block, b, c, d, e, a, 9); R0(block, a, b, c, d, e, 10); R0(block, e, a, b, c, d, 11);
- R0(block, d, e, a, b, c, 12); R0(block, c, d, e, a, b, 13); R0(block, b, c, d, e, a, 14); R0(block, a, b, c, d, e, 15);
- R1(block, e, a, b, c, d, 16); R1(block, d, e, a, b, c, 17); R1(block, c, d, e, a, b, 18); R1(block, b, c, d, e, a, 19);
- R2(block, a, b, c, d, e, 20); R2(block, e, a, b, c, d, 21); R2(block, d, e, a, b, c, 22); R2(block, c, d, e, a, b, 23);
- R2(block, b, c, d, e, a, 24); R2(block, a, b, c, d, e, 25); R2(block, e, a, b, c, d, 26); R2(block, d, e, a, b, c, 27);
- R2(block, c, d, e, a, b, 28); R2(block, b, c, d, e, a, 29); R2(block, a, b, c, d, e, 30); R2(block, e, a, b, c, d, 31);
- R2(block, d, e, a, b, c, 32); R2(block, c, d, e, a, b, 33); R2(block, b, c, d, e, a, 34); R2(block, a, b, c, d, e, 35);
- R2(block, e, a, b, c, d, 36); R2(block, d, e, a, b, c, 37); R2(block, c, d, e, a, b, 38); R2(block, b, c, d, e, a, 39);
- R3(block, a, b, c, d, e, 40); R3(block, e, a, b, c, d, 41); R3(block, d, e, a, b, c, 42); R3(block, c, d, e, a, b, 43);
- R3(block, b, c, d, e, a, 44); R3(block, a, b, c, d, e, 45); R3(block, e, a, b, c, d, 46); R3(block, d, e, a, b, c, 47);
- R3(block, c, d, e, a, b, 48); R3(block, b, c, d, e, a, 49); R3(block, a, b, c, d, e, 50); R3(block, e, a, b, c, d, 51);
- R3(block, d, e, a, b, c, 52); R3(block, c, d, e, a, b, 53); R3(block, b, c, d, e, a, 54); R3(block, a, b, c, d, e, 55);
- R3(block, e, a, b, c, d, 56); R3(block, d, e, a, b, c, 57); R3(block, c, d, e, a, b, 58); R3(block, b, c, d, e, a, 59);
- R4(block, a, b, c, d, e, 60); R4(block, e, a, b, c, d, 61); R4(block, d, e, a, b, c, 62); R4(block, c, d, e, a, b, 63);
- R4(block, b, c, d, e, a, 64); R4(block, a, b, c, d, e, 65); R4(block, e, a, b, c, d, 66); R4(block, d, e, a, b, c, 67);
- R4(block, c, d, e, a, b, 68); R4(block, b, c, d, e, a, 69); R4(block, a, b, c, d, e, 70); R4(block, e, a, b, c, d, 71);
- R4(block, d, e, a, b, c, 72); R4(block, c, d, e, a, b, 73); R4(block, b, c, d, e, a, 74); R4(block, a, b, c, d, e, 75);
- R4(block, e, a, b, c, d, 76); R4(block, d, e, a, b, c, 77); R4(block, c, d, e, a, b, 78); R4(block, b, c, d, e, a, 79);
- // Add the working vars back into state[]
- this->state[0] += a;
- this->state[1] += b;
- this->state[2] += c;
- this->state[3] += d;
- this->state[4] += e;
- }
-
-public:
- SHA1Context()
- {
- for (int i = 0; i < 5; ++i)
- this->state[i] = sha1_iv[i];
-
- this->count[0] = this->count[1] = 0;
- memset(this->buffer, 0, sizeof(this->buffer));
- memset(this->digest, 0, sizeof(this->digest));
- }
-
- void Update(const unsigned char* data, size_t len)
- {
- uint32_t i, j;
-
- j = (this->count[0] >> 3) & 63;
- if ((this->count[0] += len << 3) < (len << 3))
- ++this->count[1];
- this->count[1] += len >> 29;
- if (j + len > 63)
- {
- memcpy(&this->buffer[j], data, (i = 64 - j));
- this->Transform(this->buffer);
- for (; i + 63 < len; i += 64)
- this->Transform(&data[i]);
- j = 0;
- }
- else
- i = 0;
- memcpy(&this->buffer[j], &data[i], len - i);
- }
-
- void Finalize()
- {
- uint32_t i;
- unsigned char finalcount[8];
-
- for (i = 0; i < 8; ++i)
- finalcount[i] = static_cast<unsigned char>((this->count[i >= 4 ? 0 : 1] >> ((3 - (i & 3)) * 8)) & 255); /* Endian independent */
- this->Update(reinterpret_cast<const unsigned char *>("\200"), 1);
- while ((this->count[0] & 504) != 448)
- this->Update(reinterpret_cast<const unsigned char *>("\0"), 1);
- this->Update(finalcount, 8); // Should cause a SHA1Transform()
- for (i = 0; i < 20; ++i)
- this->digest[i] = static_cast<unsigned char>((this->state[i>>2] >> ((3 - (i & 3)) * 8)) & 255);
-
- this->Transform(this->buffer);
- }
-
- std::string GetRaw() const
- {
- return std::string((const char*)digest, sizeof(digest));
- }
-};
-
-class SHA1HashProvider final
- : public HashProvider
-{
-public:
- SHA1HashProvider(Module* mod)
- : HashProvider(mod, "sha1", 20, 64)
- {
- }
-
- std::string GenerateRaw(const std::string& data) override
- {
- SHA1Context ctx;
- ctx.Update(reinterpret_cast<const unsigned char*>(data.data()), data.length());
- ctx.Finalize();
- return ctx.GetRaw();
- }
-};
-
-class ModuleSHA1 final
- : public Module
-{
-private:
- SHA1HashProvider sha1;
-
-public:
- ModuleSHA1()
- : Module(VF_VENDOR, "Allows other modules to generate SHA-1 hashes.")
- , sha1(this)
- {
- }
-};
-
-MODULE_INIT(ModuleSHA1)