2 chacha-merged.c version 20080118
25   (U32V((v) << (n)) | ((v) >> (32 - (n))))
52 static const char sigma[16] = "expand 32-byte k";
53 static const char tau[16] = "expand 16-byte k";
60   x->input[4] = U8TO32_LITTLE(k + 0);  in chacha_keysetup()
61   x->input[5] = U8TO32_LITTLE(k + 4);  in chacha_keysetup()
62   x->input[6] = U8TO32_LITTLE(k + 8);  in chacha_keysetup()
63   x->input[7] = U8TO32_LITTLE(k + 12);  in chacha_keysetup()
70   x->input[8] = U8TO32_LITTLE(k + 0);  in chacha_keysetup()
71   x->input[9] = U8TO32_LITTLE(k + 4);  in chacha_keysetup()
72   x->input[10] = U8TO32_LITTLE(k + 8);  in chacha_keysetup()
73   x->input[11] = U8TO32_LITTLE(k + 12);  in chacha_keysetup()
74   x->input[0] = U8TO32_LITTLE(constants + 0);  in chacha_keysetup()
75   x->input[1] = U8TO32_LITTLE(constants + 4);  in chacha_keysetup()
76   x->input[2] = U8TO32_LITTLE(constants + 8);  in chacha_keysetup()
77   x->input[3] = U8TO32_LITTLE(constants + 12);  in chacha_keysetup()
83   x->input[12] = counter == NULL ? 0 : U8TO32_LITTLE(counter + 0);  in chacha_ivsetup()
84   x->input[13] = counter == NULL ? 0 : U8TO32_LITTLE(counter + 4);  in chacha_ivsetup()
85   x->input[14] = U8TO32_LITTLE(iv + 0);  in chacha_ivsetup()
86   x->input[15] = U8TO32_LITTLE(iv + 4);  in chacha_ivsetup()
93   u32 j0, j1, j2, j3, j4, j5, j6, j7, j8, j9, j10, j11, j12, j13, j14, j15;  in chacha_encrypt_bytes()  local
100   j0 = x->input[0];  in chacha_encrypt_bytes()
101   j1 = x->input[1];  in chacha_encrypt_bytes()
102   j2 = x->input[2];  in chacha_encrypt_bytes()
103   j3 = x->input[3];  in chacha_encrypt_bytes()
104   j4 = x->input[4];  in chacha_encrypt_bytes()
105   j5 = x->input[5];  in chacha_encrypt_bytes()
106   j6 = x->input[6];  in chacha_encrypt_bytes()
107   j7 = x->input[7];  in chacha_encrypt_bytes()
108   j8 = x->input[8];  in chacha_encrypt_bytes()
109   j9 = x->input[9];  in chacha_encrypt_bytes()
110   j10 = x->input[10];  in chacha_encrypt_bytes()
111   j11 = x->input[11];  in chacha_encrypt_bytes()
112   j12 = x->input[12];  in chacha_encrypt_bytes()
113   j13 = x->input[13];  in chacha_encrypt_bytes()
114   j14 = x->input[14];  in chacha_encrypt_bytes()
115   j15 = x->input[15];  in chacha_encrypt_bytes()
128     x4 = j4;  in chacha_encrypt_bytes()
140     for (i = 20;i > 0;i -= 2) {  in chacha_encrypt_bytes()
154     x4 = PLUS(x4,j4);  in chacha_encrypt_bytes()
211       x->input[12] = j12;  in chacha_encrypt_bytes()
212       x->input[13] = j13;  in chacha_encrypt_bytes()
215     bytes -= 64;  in chacha_encrypt_bytes()