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authorJoel Sing <jsing@cvs.openbsd.org>2014-05-15 14:12:34 +0000
committerJoel Sing <jsing@cvs.openbsd.org>2014-05-15 14:12:34 +0000
commit05051c03633abfce21a5d4677122da2640a8168f (patch)
tree17e52c6a0262a4ac9a4281002ff6d02ae814b9b8 /lib/libcrypto
parent81fc1437a7639514500ee63f56afce4d2cdcdf66 (diff)
KNF.
Diffstat (limited to 'lib/libcrypto')
-rw-r--r--lib/libcrypto/chacha/chacha-merged.c312
-rw-r--r--lib/libcrypto/chacha/chacha.h2
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,