20100203-2050

1 files changed, 114 insertions, 0 deletions

diff --git a/libsec/port/sha512block.c b/libsec/port/sha512block.c
new file mode 100644
index 00000000..bc3f4cfd
--- /dev/null
+++ b/libsec/port/sha512block.c
@@ -0,0 +1,114 @@
+#include "os.h"
+#include <libsec.h>
+
+
+enum {
+	SHA512rounds =  80,
+};
+
+u64int sha512const[] = {
+0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
+0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
+0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
+0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
+0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
+0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
+0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
+0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
+0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
+0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
+0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
+0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
+0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
+0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
+0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
+0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
+0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
+0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
+0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
+0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
+};
+
+
+static u32int
+g32(uchar *p)
+{
+	return p[0]<<24|p[1]<<16|p[2]<<8|p[3]<<0;
+}
+
+static u64int
+g64(uchar *p)
+{
+	return ((u64int)g32(p)<<32)|g32(p+4);
+}
+
+
+#define CH(x,y,z)	((x&y) ^ (~x&z))
+#define MAJ(x,y,z)	((x&y) ^ (x&z) ^ (y&z))
+#define ROTR32(n, v)	((v>>n) | (v<<(32-n)))
+#define ROTR64(n, v)	((v>>n) | (v<<(64-n)))
+#define SHR(n, x)	(x>>n)
+
+#define SIGMA0b(x)	(ROTR64(28, x)^ROTR64(34, x)^ROTR64(39, x))
+#define SIGMA1b(x)	(ROTR64(14, x)^ROTR64(18, x)^ROTR64(41, x))
+#define sigma0b(x)	(ROTR64(1, x)^ROTR64(8, x)^SHR(7, x))
+#define sigma1b(x)	(ROTR64(19, x)^ROTR64(61, x)^SHR(6, x))
+
+#define A	v[0]
+#define B	v[1]
+#define C	v[2]
+#define D	v[3]
+#define E	v[4]
+#define F	v[5]
+#define G	v[6]
+#define H	v[7]
+
+void
+_sha512block(SHA512state *s, uchar *buf)
+{
+	u64int w[2*SHA512bsize/8];
+	int i, t;
+	u64int t1, t2, t3, v[8];
+
+	for(t = 0; t < nelem(w)/2; t++) {
+		if(t < 16) {
+			w[t] = g64(buf);
+			buf += 8;
+		}
+	}
+
+	memmove(v, s->h64, sizeof s->h64);
+
+	for(t = 0; t < SHA512rounds; t++) {
+		if(t >= 16) {
+			/* w[t&31] = sigma1b(w[(t-2)&31]) + w[(t-7)&31] + sigma0b(w[(t-15)&31]) + w[(t-16)&31]; */
+			t2 = w[(t-2)&31];
+			t3 = w[(t-15)&31];
+			/* w[t&31] = sigma1b(t2) + w[(t-7)&31] + sigma0b(t3) + w[(t-16)&31]; */
+			t1 = sigma1b(t2);
+			t1 += w[(t-7)&31];
+			t1 +=  sigma0b(t3);
+			t1 += w[(t-16)&31];
+			w[t&31] = t1;
+		}
+		/* t1 = H + SIGMA1b(E) + CH(E,F,G) + sha512const[t] + w[t&31]; */
+		t1 = H;
+		t1 += SIGMA1b(E);
+		t1 += CH(E, F, G);
+		t1 += sha512const[t] + w[t&31];
+		/* t2 = SIGMA0b(A) + MAJ(A,B,C); */
+		t2 = SIGMA0b(A);
+		t2 += MAJ(A, B, C);
+		H = G;
+		G = F;
+		F = E;
+		E = D+t1;
+		D = C;
+		C = B;
+		B = A;
+		A = t1+t2;
+	}
+
+	for(i = 0; i < nelem(v); i++)
+		s->h64[i] += v[i];
+}