Moved RNG out of the compiler and into a standalone library

1 files changed, 0 insertions, 201 deletions

diff --git a/src/stdlib/chacha.h b/src/stdlib/chacha.h
deleted file mode 100644
index 69d79ea3..00000000
--- a/src/stdlib/chacha.h
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
-chacha-merged.c version 20080118
-D. J. Bernstein
-Public domain.
-*/
-
-/* $OpenBSD: chacha_private.h,v 1.3 2022/02/28 21:56:29 dtucker Exp $ */
-/* Tomo: chacha.h,v 1.0 2024/11/03 Bruce Hill */
-
-typedef unsigned char u8;
-typedef unsigned int u32;
-
-typedef struct
-{
-  u32 input[16]; /* could be compressed */
-} chacha_ctx;
-
-#define U8C(v) (v##U)
-#define U32C(v) (v##U)
-
-#define U8V(v) ((u8)(v) & U8C(0xFF))
-#define U32V(v) ((u32)(v) & U32C(0xFFFFFFFF))
-
-#define ROTL32(v, n) \
-  (U32V((v) << (n)) | ((v) >> (32 - (n))))
-
-#define U8TO32_LITTLE(p) \
-  (((u32)((p)[0])      ) | \
-   ((u32)((p)[1]) <<  8) | \
-   ((u32)((p)[2]) << 16) | \
-   ((u32)((p)[3]) << 24))
-
-#define U32TO8_LITTLE(p, v) \
-  do { \
-    (p)[0] = U8V((v)      ); \
-    (p)[1] = U8V((v) >>  8); \
-    (p)[2] = U8V((v) >> 16); \
-    (p)[3] = U8V((v) >> 24); \
-  } while (0)
-
-#define ROTATE(v, c) (ROTL32(v, c))
-#define XOR(v, w) ((v) ^ (w))
-#define PLUS(v, w) (U32V((v) + (w)))
-#define PLUSONE(v) (PLUS((v), 1))
-
-#define QUARTERROUND(a, b, c, d) \
-  a = PLUS(a, b); d = ROTATE(XOR(d, a), 16); \
-  c = PLUS(c, d); b = ROTATE(XOR(b, c), 12); \
-  a = PLUS(a, b); d = ROTATE(XOR(d, a), 8); \
-  c = PLUS(c, d); b = ROTATE(XOR(b, c), 7);
-
-static const char sigma[16] = "expand 32-byte k";
-static const char tau[16] = "expand 16-byte k";
-
-static void
-chacha_keysetup(chacha_ctx *chacha, const u8 *k, u32 kbits)
-{
-  const char *constants;
-
-  chacha->input[4] = U8TO32_LITTLE(k + 0);
-  chacha->input[5] = U8TO32_LITTLE(k + 4);
-  chacha->input[6] = U8TO32_LITTLE(k + 8);
-  chacha->input[7] = U8TO32_LITTLE(k + 12);
-  if (kbits == 256) { /* recommended */
-    k += 16;
-    constants = sigma;
-  } else { /* kbits == 128 */
-    constants = tau;
-  }
-  chacha->input[8] = U8TO32_LITTLE(k + 0);
-  chacha->input[9] = U8TO32_LITTLE(k + 4);
-  chacha->input[10] = U8TO32_LITTLE(k + 8);
-  chacha->input[11] = U8TO32_LITTLE(k + 12);
-  chacha->input[0] = U8TO32_LITTLE(constants + 0);
-  chacha->input[1] = U8TO32_LITTLE(constants + 4);
-  chacha->input[2] = U8TO32_LITTLE(constants + 8);
-  chacha->input[3] = U8TO32_LITTLE(constants + 12);
-}
-
-static void
-chacha_ivsetup(chacha_ctx *chacha, const u8 *iv)
-{
-  chacha->input[12] = 0;
-  chacha->input[13] = 0;
-  chacha->input[14] = U8TO32_LITTLE(iv + 0);
-  chacha->input[15] = U8TO32_LITTLE(iv + 4);
-}
-
-static void
-chacha_encrypt_bytes(chacha_ctx *chacha, const u8 *m, u8 *c, u32 bytes)
-{
-  u32 x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15;
-  u32 j0, j1, j2, j3, j4, j5, j6, j7, j8, j9, j10, j11, j12, j13, j14, j15;
-  u8 *ctarget = NULL;
-  u8 tmp[64];
-  u_int i;
-
-  if (!bytes) return;
-
-  j0 = chacha->input[0];
-  j1 = chacha->input[1];
-  j2 = chacha->input[2];
-  j3 = chacha->input[3];
-  j4 = chacha->input[4];
-  j5 = chacha->input[5];
-  j6 = chacha->input[6];
-  j7 = chacha->input[7];
-  j8 = chacha->input[8];
-  j9 = chacha->input[9];
-  j10 = chacha->input[10];
-  j11 = chacha->input[11];
-  j12 = chacha->input[12];
-  j13 = chacha->input[13];
-  j14 = chacha->input[14];
-  j15 = chacha->input[15];
-
-  for (;;) {
-    if (bytes < 64) {
-      for (i = 0;i < bytes;++i) tmp[i] = m[i];
-      m = tmp;
-      ctarget = c;
-      c = tmp;
-    }
-    x0 = j0;
-    x1 = j1;
-    x2 = j2;
-    x3 = j3;
-    x4 = j4;
-    x5 = j5;
-    x6 = j6;
-    x7 = j7;
-    x8 = j8;
-    x9 = j9;
-    x10 = j10;
-    x11 = j11;
-    x12 = j12;
-    x13 = j13;
-    x14 = j14;
-    x15 = j15;
-    for (i = 20;i > 0;i -= 2) {
-      QUARTERROUND( x0, x4, x8, x12)
-      QUARTERROUND( x1, x5, x9, x13)
-      QUARTERROUND( x2, x6, x10, x14)
-      QUARTERROUND( x3, x7, x11, x15)
-      QUARTERROUND( x0, x5, x10, x15)
-      QUARTERROUND( x1, x6, x11, x12)
-      QUARTERROUND( x2, x7, x8, x13)
-      QUARTERROUND( x3, x4, x9, x14)
-    }
-    x0 = PLUS(x0, j0);
-    x1 = PLUS(x1, j1);
-    x2 = PLUS(x2, j2);
-    x3 = PLUS(x3, j3);
-    x4 = PLUS(x4, j4);
-    x5 = PLUS(x5, j5);
-    x6 = PLUS(x6, j6);
-    x7 = PLUS(x7, j7);
-    x8 = PLUS(x8, j8);
-    x9 = PLUS(x9, j9);
-    x10 = PLUS(x10, j10);
-    x11 = PLUS(x11, j11);
-    x12 = PLUS(x12, j12);
-    x13 = PLUS(x13, j13);
-    x14 = PLUS(x14, j14);
-    x15 = PLUS(x15, j15);
-
-    j12 = PLUSONE(j12);
-    if (!j12) {
-      j13 = PLUSONE(j13);
-      /* stopping at 2^70 bytes per nonce is user's responsibility */
-    }
-
-    U32TO8_LITTLE(c + 0, x0);
-    U32TO8_LITTLE(c + 4, x1);
-    U32TO8_LITTLE(c + 8, x2);
-    U32TO8_LITTLE(c + 12, x3);
-    U32TO8_LITTLE(c + 16, x4);
-    U32TO8_LITTLE(c + 20, x5);
-    U32TO8_LITTLE(c + 24, x6);
-    U32TO8_LITTLE(c + 28, x7);
-    U32TO8_LITTLE(c + 32, x8);
-    U32TO8_LITTLE(c + 36, x9);
-    U32TO8_LITTLE(c + 40, x10);
-    U32TO8_LITTLE(c + 44, x11);
-    U32TO8_LITTLE(c + 48, x12);
-    U32TO8_LITTLE(c + 52, x13);
-    U32TO8_LITTLE(c + 56, x14);
-    U32TO8_LITTLE(c + 60, x15);
-
-    if (bytes <= 64) {
-      if (bytes < 64) {
-        for (i = 0;i < bytes;++i) ctarget[i] = c[i];
-      }
-      chacha->input[12] = j12;
-      chacha->input[13] = j13;
-      return;
-    }
-    bytes -= 64;
-    c += 64;
-  }
-}