1 files changed, 228 insertions, 0 deletions

diff --git a/nacl/crypto_hashblocks/sha256/inplace/blocks.c b/nacl/crypto_hashblocks/sha256/inplace/blocks.c
new file mode 100644
index 00000000..4a191501
--- /dev/null
+++ b/nacl/crypto_hashblocks/sha256/inplace/blocks.c
@@ -0,0 +1,228 @@
+#include "crypto_hashblocks.h"
+
+typedef unsigned int uint32;
+
+static uint32 load_bigendian(const unsigned char *x)
+{
+  return
+      (uint32) (x[3]) \
+  | (((uint32) (x[2])) << 8) \
+  | (((uint32) (x[1])) << 16) \
+  | (((uint32) (x[0])) << 24)
+  ;
+}
+
+static void store_bigendian(unsigned char *x,uint32 u)
+{
+  x[3] = u; u >>= 8;
+  x[2] = u; u >>= 8;
+  x[1] = u; u >>= 8;
+  x[0] = u;
+}
+
+#define SHR(x,c) ((x) >> (c))
+#define ROTR(x,c) (((x) >> (c)) | ((x) << (32 - (c))))
+
+#define Ch(x,y,z) ((x & y) ^ (~x & z))
+#define Maj(x,y,z) ((x & y) ^ (x & z) ^ (y & z))
+#define Sigma0(x) (ROTR(x, 2) ^ ROTR(x,13) ^ ROTR(x,22))
+#define Sigma1(x) (ROTR(x, 6) ^ ROTR(x,11) ^ ROTR(x,25))
+#define sigma0(x) (ROTR(x, 7) ^ ROTR(x,18) ^ SHR(x, 3))
+#define sigma1(x) (ROTR(x,17) ^ ROTR(x,19) ^ SHR(x,10))
+
+#define M(w0,w14,w9,w1) w0 += sigma1(w14) + w9 + sigma0(w1);
+
+#define EXPAND \
+  M(w0 ,w14,w9 ,w1 ) \
+  M(w1 ,w15,w10,w2 ) \
+  M(w2 ,w0 ,w11,w3 ) \
+  M(w3 ,w1 ,w12,w4 ) \
+  M(w4 ,w2 ,w13,w5 ) \
+  M(w5 ,w3 ,w14,w6 ) \
+  M(w6 ,w4 ,w15,w7 ) \
+  M(w7 ,w5 ,w0 ,w8 ) \
+  M(w8 ,w6 ,w1 ,w9 ) \
+  M(w9 ,w7 ,w2 ,w10) \
+  M(w10,w8 ,w3 ,w11) \
+  M(w11,w9 ,w4 ,w12) \
+  M(w12,w10,w5 ,w13) \
+  M(w13,w11,w6 ,w14) \
+  M(w14,w12,w7 ,w15) \
+  M(w15,w13,w8 ,w0 )
+
+#define F(r0,r1,r2,r3,r4,r5,r6,r7,w,k) \
+  r7 += Sigma1(r4) + Ch(r4,r5,r6) + k + w; \
+  r3 += r7; \
+  r7 += Sigma0(r0) + Maj(r0,r1,r2);
+
+#define G(r0,r1,r2,r3,r4,r5,r6,r7,i) \
+  F(r0,r1,r2,r3,r4,r5,r6,r7,w0 ,round[i + 0]) \
+  F(r7,r0,r1,r2,r3,r4,r5,r6,w1 ,round[i + 1]) \
+  F(r6,r7,r0,r1,r2,r3,r4,r5,w2 ,round[i + 2]) \
+  F(r5,r6,r7,r0,r1,r2,r3,r4,w3 ,round[i + 3]) \
+  F(r4,r5,r6,r7,r0,r1,r2,r3,w4 ,round[i + 4]) \
+  F(r3,r4,r5,r6,r7,r0,r1,r2,w5 ,round[i + 5]) \
+  F(r2,r3,r4,r5,r6,r7,r0,r1,w6 ,round[i + 6]) \
+  F(r1,r2,r3,r4,r5,r6,r7,r0,w7 ,round[i + 7]) \
+  F(r0,r1,r2,r3,r4,r5,r6,r7,w8 ,round[i + 8]) \
+  F(r7,r0,r1,r2,r3,r4,r5,r6,w9 ,round[i + 9]) \
+  F(r6,r7,r0,r1,r2,r3,r4,r5,w10,round[i + 10]) \
+  F(r5,r6,r7,r0,r1,r2,r3,r4,w11,round[i + 11]) \
+  F(r4,r5,r6,r7,r0,r1,r2,r3,w12,round[i + 12]) \
+  F(r3,r4,r5,r6,r7,r0,r1,r2,w13,round[i + 13]) \
+  F(r2,r3,r4,r5,r6,r7,r0,r1,w14,round[i + 14]) \
+  F(r1,r2,r3,r4,r5,r6,r7,r0,w15,round[i + 15])
+
+static const uint32 round[64] = {
+  0x428a2f98
+, 0x71374491
+, 0xb5c0fbcf
+, 0xe9b5dba5
+, 0x3956c25b
+, 0x59f111f1
+, 0x923f82a4
+, 0xab1c5ed5
+, 0xd807aa98
+, 0x12835b01
+, 0x243185be
+, 0x550c7dc3
+, 0x72be5d74
+, 0x80deb1fe
+, 0x9bdc06a7
+, 0xc19bf174
+, 0xe49b69c1
+, 0xefbe4786
+, 0x0fc19dc6
+, 0x240ca1cc
+, 0x2de92c6f
+, 0x4a7484aa
+, 0x5cb0a9dc
+, 0x76f988da
+, 0x983e5152
+, 0xa831c66d
+, 0xb00327c8
+, 0xbf597fc7
+, 0xc6e00bf3
+, 0xd5a79147
+, 0x06ca6351
+, 0x14292967
+, 0x27b70a85
+, 0x2e1b2138
+, 0x4d2c6dfc
+, 0x53380d13
+, 0x650a7354
+, 0x766a0abb
+, 0x81c2c92e
+, 0x92722c85
+, 0xa2bfe8a1
+, 0xa81a664b
+, 0xc24b8b70
+, 0xc76c51a3
+, 0xd192e819
+, 0xd6990624
+, 0xf40e3585
+, 0x106aa070
+, 0x19a4c116
+, 0x1e376c08
+, 0x2748774c
+, 0x34b0bcb5
+, 0x391c0cb3
+, 0x4ed8aa4a
+, 0x5b9cca4f
+, 0x682e6ff3
+, 0x748f82ee
+, 0x78a5636f
+, 0x84c87814
+, 0x8cc70208
+, 0x90befffa
+, 0xa4506ceb
+, 0xbef9a3f7
+, 0xc67178f2
+} ;
+
+int crypto_hashblocks(unsigned char *statebytes,const unsigned char *in,unsigned long long inlen)
+{
+  uint32 state[8];
+  uint32 r0;
+  uint32 r1;
+  uint32 r2;
+  uint32 r3;
+  uint32 r4;
+  uint32 r5;
+  uint32 r6;
+  uint32 r7;
+
+  r0 = load_bigendian(statebytes +  0); state[0] = r0;
+  r1 = load_bigendian(statebytes +  4); state[1] = r1;
+  r2 = load_bigendian(statebytes +  8); state[2] = r2;
+  r3 = load_bigendian(statebytes + 12); state[3] = r3;
+  r4 = load_bigendian(statebytes + 16); state[4] = r4;
+  r5 = load_bigendian(statebytes + 20); state[5] = r5;
+  r6 = load_bigendian(statebytes + 24); state[6] = r6;
+  r7 = load_bigendian(statebytes + 28); state[7] = r7;
+
+  while (inlen >= 64) {
+    uint32 w0  = load_bigendian(in +  0);
+    uint32 w1  = load_bigendian(in +  4);
+    uint32 w2  = load_bigendian(in +  8);
+    uint32 w3  = load_bigendian(in + 12);
+    uint32 w4  = load_bigendian(in + 16);
+    uint32 w5  = load_bigendian(in + 20);
+    uint32 w6  = load_bigendian(in + 24);
+    uint32 w7  = load_bigendian(in + 28);
+    uint32 w8  = load_bigendian(in + 32);
+    uint32 w9  = load_bigendian(in + 36);
+    uint32 w10 = load_bigendian(in + 40);
+    uint32 w11 = load_bigendian(in + 44);
+    uint32 w12 = load_bigendian(in + 48);
+    uint32 w13 = load_bigendian(in + 52);
+    uint32 w14 = load_bigendian(in + 56);
+    uint32 w15 = load_bigendian(in + 60);
+
+    G(r0,r1,r2,r3,r4,r5,r6,r7,0)
+
+    EXPAND
+
+    G(r0,r1,r2,r3,r4,r5,r6,r7,16)
+
+    EXPAND
+
+    G(r0,r1,r2,r3,r4,r5,r6,r7,32)
+
+    EXPAND
+
+    G(r0,r1,r2,r3,r4,r5,r6,r7,48)
+
+    r0 += state[0];
+    r1 += state[1];
+    r2 += state[2];
+    r3 += state[3];
+    r4 += state[4];
+    r5 += state[5];
+    r6 += state[6];
+    r7 += state[7];
+  
+    state[0] = r0;
+    state[1] = r1;
+    state[2] = r2;
+    state[3] = r3;
+    state[4] = r4;
+    state[5] = r5;
+    state[6] = r6;
+    state[7] = r7;
+
+    in += 64;
+    inlen -= 64;
+  }
+
+  store_bigendian(statebytes +  0,state[0]);
+  store_bigendian(statebytes +  4,state[1]);
+  store_bigendian(statebytes +  8,state[2]);
+  store_bigendian(statebytes + 12,state[3]);
+  store_bigendian(statebytes + 16,state[4]);
+  store_bigendian(statebytes + 20,state[5]);
+  store_bigendian(statebytes + 24,state[6]);
+  store_bigendian(statebytes + 28,state[7]);
+
+  return 0;
+}