tons of hashes bleh

1 files changed, 211 insertions, 0 deletions

diff --git a/src/hash/sha2-256.c b/src/hash/sha2-256.c
new file mode 100644
index 0000000..34afe63
--- /dev/null
+++ b/src/hash/sha2-256.c
@@ -0,0 +1,211 @@
+#include "../i_util.h"
+#include "../crypto.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdio.h>
+
+void endian_swap128(__uint128_t *x){
+    uint8_t *y = (uint8_t*)x;
+    for (size_t low = 0, high = sizeof(__uint128_t) - 1; high > low; low++, high--){
+        y[low]  ^= y[high];
+        y[high] ^= y[low];
+        y[low]  ^= y[high];
+    }
+}
+
+void endian_swap64(uint64_t *x){
+    uint8_t *y = (uint8_t*)x;
+    for (size_t low = 0, high = sizeof(uint64_t) - 1; high > low; low++, high--){
+        y[low]  ^= y[high];
+        y[high] ^= y[low];
+        y[low]  ^= y[high];
+    }
+}
+
+struct iv {
+    uint64_t h0, h1, h2, h3, h4, h5, h6, h7;
+};
+
+static const struct iv sha512_iv = {.h0 = 0x6a09e667f3bcc908, .h1 = 0xbb67ae8584caa73b, .h2 = 0x3c6ef372fe94f82b, .h3 = 0xa54ff53a5f1d36f1, 
+    .h4 = 0x510e527fade682d1, .h5 = 0x9b05688c2b3e6c1f, .h6 = 0x1f83d9abfb41bd6b, .h7 = 0x5be0cd19137e2179};
+
+static const struct iv sha384_iv = {.h0 = 0xcbbb9d5dc1059ed8, .h1 = 0x629a292a367cd507, .h2 = 0x9159015a3070dd17, .h3 = 0x152fecd8f70e5939, 
+    .h4 = 0x67332667ffc00b31, .h5 = 0x8eb44a8768581511, .h6 = 0xdb0c2e0d64f98fa7, .h7 = 0x47b5481dbefa4fa4};
+
+void sha512_gen(uint64_t* out_stream, uint8_t* input, struct iv sha_iv){
+    uint64_t h0 = sha_iv.h0, h1 = sha_iv.h1, h2 = sha_iv.h2, h3 = sha_iv.h3, h4 = sha_iv.h4, h5 = sha_iv.h5, h6 = sha_iv.h6, h7 = sha_iv.h7;
+
+    const uint64_t 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};
+       
+    size_t len = 0;
+    for(int i = 0; input[i]!='\0'; i++) len++;
+
+    size_t blen = len*8;
+    int ulen = 0;
+
+    size_t l = len * 8;
+    size_t k2 = (896 - ( (l  + 1) % 1024 )) % 1024;
+    
+    ulen = ((l + k2 + 1) / 8) + 16;
+    uint64_t tlen = ulen/128;
+    uint8_t* by = calloc(ulen, sizeof * by);
+    for (size_t i = 0; i < len; i++)
+        by[i] = input[i];
+    by[len] = 0x80;
+
+    //this part is very lame
+    __uint128_t bigL = l;
+    endian_swap128(&bigL);
+    memcpy(&by[ulen - sizeof(__uint128_t)], &bigL, sizeof(__uint128_t));
+
+    uint64_t *msg = ((uint64_t*)&by[0]);
+    for (int i = 0; i < tlen * 16; i++)
+        endian_swap64(msg++);
+
+    for(int z = 0; z < (int)tlen; z++){
+        uint64_t* M = ((uint64_t*)(by));
+        uint64_t W[80];
+
+        //i dont really understand this 0->16 part
+        uint64_t *m = &M[(z * 16)];
+        for (int i = 0; i < 16; ++i){
+            W[i] = *m;
+            ++m;
+        }
+
+        for (int i = 16; i != 80; i++){
+            W[i] = (i_rr64(W[i - 2],19) ^ i_rr64(W[i - 2], 61) ^ (W[i - 2] >> 6)) 
+                + W[i - 7] + (i_rr64(W[i - 15],1) ^ i_rr64(W[i - 15],8) ^ (W[i - 15] >> 7)) + W[i - 16];
+        }
+
+        uint64_t a = h0;
+        uint64_t b = h1;
+        uint64_t c = h2;
+        uint64_t d = h3;
+        uint64_t e = h4;
+        uint64_t f = h5;
+        uint64_t g = h6;
+        uint64_t h = h7;
+        
+        for(int i = 0; i != 80; i++){
+            uint64_t S1 = i_rr64(e, 14) ^ i_rr64(e, 18) ^ i_rr64(e, 41);
+            uint64_t ch = (e & f) ^ ((~e) & g);
+            uint64_t temp1 = h + S1 + ch + k[i] + W[i];
+            
+            uint64_t S0 = i_rr64(a, 28) ^ i_rr64(a, 34) ^ i_rr64(a, 39);
+            uint64_t maj = (a & b) ^ (a & c) ^ (b & c);
+            uint64_t temp2 = S0 + maj;
+            
+            h = g;
+            g = f;
+            f = e;
+            e = d + temp1;
+            d = c;
+            c = b;
+            b = a;
+            a = temp1 + temp2;
+        }
+        
+        h0 += a;
+        h1 += b;
+        h2 += c;
+        h3 += d;
+        h4 += e;
+        h5 += f;
+        h6 += g;
+        h7 += h;
+        
+    }
+    out_stream[0] = h0;
+    out_stream[1] = h1;
+    out_stream[2] = h2;
+    out_stream[3] = h3;
+    out_stream[4] = h4;
+    out_stream[5] = h5;
+    out_stream[6] = h6;
+    out_stream[7] = h7;
+    free(by);
+    return;
+}
+
+struct iv sha_iv_gen(int i){
+    struct iv oh = {.h0 = sha512_iv.h0 ^ 0xa5a5a5a5a5a5a5a5, .h1 = sha512_iv.h1 ^ 0xa5a5a5a5a5a5a5a5, .h2 = sha512_iv.h2 ^ 0xa5a5a5a5a5a5a5a5,
+        .h3 = sha512_iv.h3 ^ 0xa5a5a5a5a5a5a5a5, .h4 = sha512_iv.h4 ^ 0xa5a5a5a5a5a5a5a5, .h5 = sha512_iv.h5 ^ 0xa5a5a5a5a5a5a5a5,
+        .h6 = sha512_iv.h6 ^ 0xa5a5a5a5a5a5a5a5, .h7 = sha512_iv.h7 ^ 0xa5a5a5a5a5a5a5a5};
+    
+    uint64_t nh[8] = {0};
+    uint8_t in[12];
+    sprintf((char*)in, "SHA-512/%i",i);
+    sha512_gen(nh, in, oh);
+    return (struct iv){.h0 = nh[0], .h1 = nh[1], .h2 = nh[2], .h3 = nh[3], .h4 = nh[4], .h5 = nh[5], .h6 = nh[6], .h7 = nh[7]};
+}
+
+void sha2_512_t(uint8_t* out, uint8_t* in, int t){
+    if(t%8!=0) return;
+    uint64_t out_stream[8] = {0};
+    sha512_gen(out_stream, in, sha_iv_gen(t));
+    for(int i = 0; i != 8; i++) sprintf((char*)out, "%s%016lx", out, out_stream[i]);
+    out[t/4] = '\0';
+}
+
+void sha2_512(uint8_t* out, uint8_t* in){
+    uint64_t out_stream[8] = {0};
+    sha512_gen(out_stream, in, sha512_iv);
+    for(int i = 0; i != 8; i++) sprintf((char*)out, "%s%016lx", out, out_stream[i]);
+}
+
+void sha2_384(uint8_t* out, uint8_t* in){
+    uint64_t out_stream[8] = {0};
+    sha512_gen(out_stream, in, sha384_iv);
+    for(int i = 0; i != 6; i++) sprintf((char*)out, "%s%016lx", out, out_stream[i]);
+}
+
+int l_sha512(lua_State* L){ 
+  size_t len = 0;
+  uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);
+
+  char digest[512] = {0};
+
+  sha2_512((uint8_t*)digest, a);
+  lua_pushstring(L, digest);
+  return 1;
+}
+
+int l_sha384(lua_State* L){ 
+  size_t len = 0;
+  uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);
+
+  char digest[384] = {0};
+
+  sha2_384((uint8_t*)digest, a);
+  lua_pushstring(L, digest);
+  return 1;
+}
+
+int l_sha512_t(lua_State* L){ 
+  size_t len = 0;
+  uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);
+  uint64_t t = luaL_checkinteger(L, 2);
+
+  char digest[512] = {0};
+
+  sha2_512_t((uint8_t*)digest, a, t);
+  lua_pushstring(L, digest);
+  return 1;
+}