From 5cd610a07468137066ea4daa5176c3e7045113b0 Mon Sep 17 00:00:00 2001 From: Uros Majstorovic Date: Wed, 5 Aug 2020 03:38:22 +0200 Subject: ecp moved to root; fixed utils and tests --- code/ecp/crypto/chacha/chacha-merged.c | 270 --------------------------------- 1 file changed, 270 deletions(-) delete mode 100644 code/ecp/crypto/chacha/chacha-merged.c (limited to 'code/ecp/crypto/chacha/chacha-merged.c') diff --git a/code/ecp/crypto/chacha/chacha-merged.c b/code/ecp/crypto/chacha/chacha-merged.c deleted file mode 100644 index 557dfd5..0000000 --- a/code/ecp/crypto/chacha/chacha-merged.c +++ /dev/null @@ -1,270 +0,0 @@ -/* $OpenBSD: chacha-merged.c,v 1.7 2014/07/11 08:47:47 bcook Exp $ */ -/* -chacha-merged.c version 20080118 -D. J. Bernstein -Public domain. -*/ - -#include - -#include - -#define CHACHA_MINKEYLEN 16 -#define CHACHA_NONCELEN 8 -#define CHACHA_CTRLEN 8 -#define CHACHA_STATELEN (CHACHA_NONCELEN+CHACHA_CTRLEN) -#define CHACHA_BLOCKLEN 64 - -struct chacha_ctx { - u_int input[16]; - uint8_t ks[CHACHA_BLOCKLEN]; - uint8_t unused; -}; - -static inline void chacha_keysetup(struct chacha_ctx *x, const u_char *k, - u_int kbits) - __attribute__((__bounded__(__minbytes__, 2, CHACHA_MINKEYLEN))); -static inline void chacha_ivsetup(struct chacha_ctx *x, const u_char *iv, - const u_char *ctr) - __attribute__((__bounded__(__minbytes__, 2, CHACHA_NONCELEN))) - __attribute__((__bounded__(__minbytes__, 3, CHACHA_CTRLEN))); -static inline void chacha_encrypt_bytes(struct chacha_ctx *x, const u_char *m, - u_char *c, u_int bytes) - __attribute__((__bounded__(__buffer__, 2, 4))) - __attribute__((__bounded__(__buffer__, 3, 4))); - -typedef unsigned char u8; -typedef unsigned int u32; - -typedef struct chacha_ctx 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 inline void -chacha_keysetup(chacha_ctx *x, const u8 *k, u32 kbits) -{ - const char *constants; - - x->input[4] = U8TO32_LITTLE(k + 0); - x->input[5] = U8TO32_LITTLE(k + 4); - x->input[6] = U8TO32_LITTLE(k + 8); - x->input[7] = U8TO32_LITTLE(k + 12); - if (kbits == 256) { /* recommended */ - k += 16; - constants = sigma; - } else { /* kbits == 128 */ - constants = tau; - } - x->input[8] = U8TO32_LITTLE(k + 0); - x->input[9] = U8TO32_LITTLE(k + 4); - x->input[10] = U8TO32_LITTLE(k + 8); - x->input[11] = U8TO32_LITTLE(k + 12); - x->input[0] = U8TO32_LITTLE(constants + 0); - x->input[1] = U8TO32_LITTLE(constants + 4); - x->input[2] = U8TO32_LITTLE(constants + 8); - x->input[3] = U8TO32_LITTLE(constants + 12); -} - -static inline void -chacha_ivsetup(chacha_ctx *x, const u8 *iv, const u8 *counter) -{ - x->input[12] = counter == NULL ? 0 : U8TO32_LITTLE(counter + 0); - x->input[13] = counter == NULL ? 0 : U8TO32_LITTLE(counter + 4); - x->input[14] = U8TO32_LITTLE(iv + 0); - x->input[15] = U8TO32_LITTLE(iv + 4); -} - -static inline void -chacha_encrypt_bytes(chacha_ctx *x, const u8 *m, u8 *c, u32 bytes) -{ - u32 x0, x1, x2, x3, x4, x5, x6, x7; - u32 x8, x9, x10, x11, x12, x13, x14, x15; - u32 j0, j1, j2, j3, j4, j5, j6, j7; - u32 j8, j9, j10, j11, j12, j13, j14, j15; - u8 *ctarget = NULL; - u8 tmp[64]; - u_int i; - - if (!bytes) - return; - - j0 = x->input[0]; - j1 = x->input[1]; - j2 = x->input[2]; - j3 = x->input[3]; - j4 = x->input[4]; - j5 = x->input[5]; - j6 = x->input[6]; - j7 = x->input[7]; - j8 = x->input[8]; - j9 = x->input[9]; - j10 = x->input[10]; - j11 = x->input[11]; - j12 = x->input[12]; - j13 = x->input[13]; - j14 = x->input[14]; - j15 = x->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); - - if (bytes < 64) { - U32TO8_LITTLE(x->ks + 0, x0); - U32TO8_LITTLE(x->ks + 4, x1); - U32TO8_LITTLE(x->ks + 8, x2); - U32TO8_LITTLE(x->ks + 12, x3); - U32TO8_LITTLE(x->ks + 16, x4); - U32TO8_LITTLE(x->ks + 20, x5); - U32TO8_LITTLE(x->ks + 24, x6); - U32TO8_LITTLE(x->ks + 28, x7); - U32TO8_LITTLE(x->ks + 32, x8); - U32TO8_LITTLE(x->ks + 36, x9); - U32TO8_LITTLE(x->ks + 40, x10); - U32TO8_LITTLE(x->ks + 44, x11); - U32TO8_LITTLE(x->ks + 48, x12); - U32TO8_LITTLE(x->ks + 52, x13); - U32TO8_LITTLE(x->ks + 56, x14); - U32TO8_LITTLE(x->ks + 60, x15); - } - - x0 = XOR(x0, U8TO32_LITTLE(m + 0)); - x1 = XOR(x1, U8TO32_LITTLE(m + 4)); - x2 = XOR(x2, U8TO32_LITTLE(m + 8)); - x3 = XOR(x3, U8TO32_LITTLE(m + 12)); - x4 = XOR(x4, U8TO32_LITTLE(m + 16)); - x5 = XOR(x5, U8TO32_LITTLE(m + 20)); - x6 = XOR(x6, U8TO32_LITTLE(m + 24)); - x7 = XOR(x7, U8TO32_LITTLE(m + 28)); - x8 = XOR(x8, U8TO32_LITTLE(m + 32)); - x9 = XOR(x9, U8TO32_LITTLE(m + 36)); - x10 = XOR(x10, U8TO32_LITTLE(m + 40)); - x11 = XOR(x11, U8TO32_LITTLE(m + 44)); - x12 = XOR(x12, U8TO32_LITTLE(m + 48)); - x13 = XOR(x13, U8TO32_LITTLE(m + 52)); - x14 = XOR(x14, U8TO32_LITTLE(m + 56)); - x15 = XOR(x15, U8TO32_LITTLE(m + 60)); - - j12 = PLUSONE(j12); - if (!j12) { - j13 = PLUSONE(j13); - /* - * Stopping at 2^70 bytes per nonce is the 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]; - } - x->input[12] = j12; - x->input[13] = j13; - x->unused = 64 - bytes; - return; - } - bytes -= 64; - c += 64; - m += 64; - } -} -- cgit v1.2.3