diff options
author | Joel Sing <jsing@cvs.openbsd.org> | 2014-05-15 14:12:34 +0000 |
---|---|---|
committer | Joel Sing <jsing@cvs.openbsd.org> | 2014-05-15 14:12:34 +0000 |
commit | 05051c03633abfce21a5d4677122da2640a8168f (patch) | |
tree | 17e52c6a0262a4ac9a4281002ff6d02ae814b9b8 /lib/libcrypto | |
parent | 81fc1437a7639514500ee63f56afce4d2cdcdf66 (diff) |
KNF.
Diffstat (limited to 'lib/libcrypto')
-rw-r--r-- | lib/libcrypto/chacha/chacha-merged.c | 312 | ||||
-rw-r--r-- | lib/libcrypto/chacha/chacha.h | 2 |
2 files changed, 158 insertions, 156 deletions
diff --git a/lib/libcrypto/chacha/chacha-merged.c b/lib/libcrypto/chacha/chacha-merged.c index 5ba813147a5..5cd1dde0721 100644 --- a/lib/libcrypto/chacha/chacha-merged.c +++ b/lib/libcrypto/chacha/chacha-merged.c @@ -43,14 +43,14 @@ typedef struct chacha_ctx chacha_ctx; (U32V((v) << (n)) | ((v) >> (32 - (n)))) #define U8TO32_LITTLE(p) \ - (((u32)((p)[0]) ) | \ + (((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)[0] = U8V((v)); \ (p)[1] = U8V((v) >> 8); \ (p)[2] = U8V((v) >> 16); \ (p)[3] = U8V((v) >> 24); \ @@ -71,167 +71,169 @@ 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) +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); + 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); + 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) +chacha_encrypt_bytes(chacha_ctx *x, 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 = 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); - - 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 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; - return; - } - bytes -= 64; - c += 64; - m += 64; - } + 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 = 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); + + 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 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; + return; + } + bytes -= 64; + c += 64; + m += 64; + } } diff --git a/lib/libcrypto/chacha/chacha.h b/lib/libcrypto/chacha/chacha.h index 456d960ed9b..8312273cea7 100644 --- a/lib/libcrypto/chacha/chacha.h +++ b/lib/libcrypto/chacha/chacha.h @@ -30,7 +30,7 @@ extern "C" { #endif typedef struct { - unsigned int input[16]; + unsigned int input[16]; } ChaCha_ctx; void ChaCha_set_key(ChaCha_ctx *ctx, const unsigned char *key, |