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#include "os.h"
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3 
void
4 
_sha1block(uchar *p, ulong len, u32int *s)
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{
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	u32int a, b, c, d, e, x;
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	uchar *end;
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	u32int *wp, *wend;
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	u32int w[80];
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	/* at this point, we have a multiple of 64 bytes */
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	for(end = p+len; p < end;){
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		a = s[0];
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		b = s[1];
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		c = s[2];
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		d = s[3];
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		e = s[4];
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19 
		wend = w + 15;
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		for(wp = w; wp < wend; wp += 5){
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			wp[0] = (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3];
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			e += ((a<<5) | (a>>27)) + wp[0];
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			e += 0x5a827999 + (((c^d)&b)^d);
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			b = (b<<30)|(b>>2);
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26 
			wp[1] = (p[4]<<24) | (p[5]<<16) | (p[6]<<8) | p[7];
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			d += ((e<<5) | (e>>27)) + wp[1];
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			d += 0x5a827999 + (((b^c)&a)^c);
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			a = (a<<30)|(a>>2);
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			wp[2] = (p[8]<<24) | (p[9]<<16) | (p[10]<<8) | p[11];
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			c += ((d<<5) | (d>>27)) + wp[2];
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			c += 0x5a827999 + (((a^b)&e)^b);
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			e = (e<<30)|(e>>2);
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			wp[3] = (p[12]<<24) | (p[13]<<16) | (p[14]<<8) | p[15];
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			b += ((c<<5) | (c>>27)) + wp[3];
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			b += 0x5a827999 + (((e^a)&d)^a);
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			d = (d<<30)|(d>>2);
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41 
			wp[4] = (p[16]<<24) | (p[17]<<16) | (p[18]<<8) | p[19];
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			a += ((b<<5) | (b>>27)) + wp[4];
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			a += 0x5a827999 + (((d^e)&c)^e);
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			c = (c<<30)|(c>>2);
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46 
			p += 20;
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		}
48 
 
49 
		wp[0] = (p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3];
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		e += ((a<<5) | (a>>27)) + wp[0];
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		e += 0x5a827999 + (((c^d)&b)^d);
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		b = (b<<30)|(b>>2);
53 
 
54 
		x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15];
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		wp[1] = (x<<1) | (x>>31);
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		d += ((e<<5) | (e>>27)) + wp[1];
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		d += 0x5a827999 + (((b^c)&a)^c);
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		a = (a<<30)|(a>>2);
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60 
		x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14];
61 
		wp[2] = (x<<1) | (x>>31);
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		c += ((d<<5) | (d>>27)) + wp[2];
63 
		c += 0x5a827999 + (((a^b)&e)^b);
64 
		e = (e<<30)|(e>>2);
65 
 
66 
		x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13];
67 
		wp[3] = (x<<1) | (x>>31);
68 
		b += ((c<<5) | (c>>27)) + wp[3];
69 
		b += 0x5a827999 + (((e^a)&d)^a);
70 
		d = (d<<30)|(d>>2);
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72 
		x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12];
73 
		wp[4] = (x<<1) | (x>>31);
74 
		a += ((b<<5) | (b>>27)) + wp[4];
75 
		a += 0x5a827999 + (((d^e)&c)^e);
76 
		c = (c<<30)|(c>>2);
77 
 
78 
		wp += 5;
79 
		p += 4;
80 
 
81 
		wend = w + 40;
82 
		for(; wp < wend; wp += 5){
83 
			x = wp[-3] ^ wp[-8] ^ wp[-14] ^ wp[-16];
84 
			wp[0] = (x<<1) | (x>>31);
85 
			e += ((a<<5) | (a>>27)) + wp[0];
86 
			e += 0x6ed9eba1 + (b^c^d);
87 
			b = (b<<30)|(b>>2);
88 
 
89 
			x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15];
90 
			wp[1] = (x<<1) | (x>>31);
91 
			d += ((e<<5) | (e>>27)) + wp[1];
92 
			d += 0x6ed9eba1 + (a^b^c);
93 
			a = (a<<30)|(a>>2);
94 
 
95 
			x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14];
96 
			wp[2] = (x<<1) | (x>>31);
97 
			c += ((d<<5) | (d>>27)) + wp[2];
98 
			c += 0x6ed9eba1 + (e^a^b);
99 
			e = (e<<30)|(e>>2);
100 
 
101 
			x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13];
102 
			wp[3] = (x<<1) | (x>>31);
103 
			b += ((c<<5) | (c>>27)) + wp[3];
104 
			b += 0x6ed9eba1 + (d^e^a);
105 
			d = (d<<30)|(d>>2);
106 
 
107 
			x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12];
108 
			wp[4] = (x<<1) | (x>>31);
109 
			a += ((b<<5) | (b>>27)) + wp[4];
110 
			a += 0x6ed9eba1 + (c^d^e);
111 
			c = (c<<30)|(c>>2);
112 
		}
113 
 
114 
		wend = w + 60;
115 
		for(; wp < wend; wp += 5){
116 
			x = wp[-3] ^ wp[-8] ^ wp[-14] ^ wp[-16];
117 
			wp[0] = (x<<1) | (x>>31);
118 
			e += ((a<<5) | (a>>27)) + wp[0];
119 
			e += 0x8f1bbcdc + ((b&c)|((b|c)&d));
120 
			b = (b<<30)|(b>>2);
121 
 
122 
			x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15];
123 
			wp[1] = (x<<1) | (x>>31);
124 
			d += ((e<<5) | (e>>27)) + wp[1];
125 
			d += 0x8f1bbcdc + ((a&b)|((a|b)&c));
126 
			a = (a<<30)|(a>>2);
127 
 
128 
			x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14];
129 
			wp[2] = (x<<1) | (x>>31);
130 
			c += ((d<<5) | (d>>27)) + wp[2];
131 
			c += 0x8f1bbcdc + ((e&a)|((e|a)&b));
132 
			e = (e<<30)|(e>>2);
133 
 
134 
			x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13];
135 
			wp[3] = (x<<1) | (x>>31);
136 
			b += ((c<<5) | (c>>27)) + wp[3];
137 
			b += 0x8f1bbcdc + ((d&e)|((d|e)&a));
138 
			d = (d<<30)|(d>>2);
139 
 
140 
			x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12];
141 
			wp[4] = (x<<1) | (x>>31);
142 
			a += ((b<<5) | (b>>27)) + wp[4];
143 
			a += 0x8f1bbcdc + ((c&d)|((c|d)&e));
144 
			c = (c<<30)|(c>>2);
145 
		}
146 
 
147 
		wend = w + 80;
148 
		for(; wp < wend; wp += 5){
149 
			x = wp[-3] ^ wp[-8] ^ wp[-14] ^ wp[-16];
150 
			wp[0] = (x<<1) | (x>>31);
151 
			e += ((a<<5) | (a>>27)) + wp[0];
152 
			e += 0xca62c1d6 + (b^c^d);
153 
			b = (b<<30)|(b>>2);
154 
 
155 
			x = wp[-2] ^ wp[-7] ^ wp[-13] ^ wp[-15];
156 
			wp[1] = (x<<1) | (x>>31);
157 
			d += ((e<<5) | (e>>27)) + wp[1];
158 
			d += 0xca62c1d6 + (a^b^c);
159 
			a = (a<<30)|(a>>2);
160 
 
161 
			x = wp[-1] ^ wp[-6] ^ wp[-12] ^ wp[-14];
162 
			wp[2] = (x<<1) | (x>>31);
163 
			c += ((d<<5) | (d>>27)) + wp[2];
164 
			c += 0xca62c1d6 + (e^a^b);
165 
			e = (e<<30)|(e>>2);
166 
 
167 
			x = wp[0] ^ wp[-5] ^ wp[-11] ^ wp[-13];
168 
			wp[3] = (x<<1) | (x>>31);
169 
			b += ((c<<5) | (c>>27)) + wp[3];
170 
			b += 0xca62c1d6 + (d^e^a);
171 
			d = (d<<30)|(d>>2);
172 
 
173 
			x = wp[1] ^ wp[-4] ^ wp[-10] ^ wp[-12];
174 
			wp[4] = (x<<1) | (x>>31);
175 
			a += ((b<<5) | (b>>27)) + wp[4];
176 
			a += 0xca62c1d6 + (c^d^e);
177 
			c = (c<<30)|(c>>2);
178 
		}
179 
 
180 
		/* save state */
181 
		s[0] += a;
182 
		s[1] += b;
183 
		s[2] += c;
184 
		s[3] += d;
185 
		s[4] += e;
186 
	}
187 
}