21 void sha2init(struct Sha2state *state)  in sha2init()  argument
23     state->h[0] = 0x6a09e667;  in sha2init()
24     state->h[1] = 0xbb67ae85;  in sha2init()
25     state->h[2] = 0x3c6ef372;  in sha2init()
26     state->h[3] = 0xa54ff53a;  in sha2init()
27     state->h[4] = 0x510e527f;  in sha2init()
28     state->h[5] = 0x9b05688c;  in sha2init()
29     state->h[6] = 0x1f83d9ab;  in sha2init()
30     state->h[7] = 0x5be0cd19;  in sha2init()
31     state->msgLen = 0;  in sha2init()
32     state->bufBytesUsed = 0;  in sha2init()
56 static void sha2processBlock(struct Sha2state *state)  in sha2processBlock()  argument
72         state->w[i] = __builtin_bswap32(state->w[i]);  in sha2processBlock()
76         uint32_t s0 = ror(state->w[i-15], 7) ^ ror(state->w[i-15], 18) ^ (state->w[i-15] >> 3);  in sha2processBlock()
77         uint32_t s1 = ror(state->w[i-2], 17) ^ ror(state->w[i-2], 19) ^ (state->w[i-2] >> 10);  in sha2processBlock()
78         state->w[i] = state->w[i - 16] + s0 + state->w[i - 7] + s1;  in sha2processBlock()
82     a = state->h[0];  in sha2processBlock()
83     b = state->h[1];  in sha2processBlock()
84     c = state->h[2];  in sha2processBlock()
85     d = state->h[3];  in sha2processBlock()
86     e = state->h[4];  in sha2processBlock()
87     f = state->h[5];  in sha2processBlock()
88     g = state->h[6];  in sha2processBlock()
89     h = state->h[7];  in sha2processBlock()
95         uint32_t temp1 = h + s1 + ch + k[i] + state->w[i];  in sha2processBlock()
111     state->h[0] += a;  in sha2processBlock()
112     state->h[1] += b;  in sha2processBlock()
113     state->h[2] += c;  in sha2processBlock()
114     state->h[3] += d;  in sha2processBlock()
115     state->h[4] += e;  in sha2processBlock()
116     state->h[5] += f;  in sha2processBlock()
117     state->h[6] += g;  in sha2processBlock()
118     state->h[7] += h;  in sha2processBlock()
121 void sha2processBytes(struct Sha2state *state, const void *bytes, uint32_t numBytes)  in sha2processBytes()  argument
125     state->msgLen += numBytes;  in sha2processBytes()
131         if (bytesToCopy > SHA2_BLOCK_SIZE - state->bufBytesUsed)  in sha2processBytes()
132             bytesToCopy = SHA2_BLOCK_SIZE - state->bufBytesUsed;  in sha2processBytes()
133         memcpy(state->b + state->bufBytesUsed, inBytes, bytesToCopy);  in sha2processBytes()
136         state->bufBytesUsed += bytesToCopy;  in sha2processBytes()
139         if (state->bufBytesUsed == SHA2_BLOCK_SIZE) {  in sha2processBytes()
140             sha2processBlock(state);  in sha2processBytes()
141             state->bufBytesUsed = 0;  in sha2processBytes()
146 const uint32_t* sha2finish(struct Sha2state *state)  in sha2finish()  argument
149     uint64_t dataLenInBits = state->msgLen * 8;  in sha2finish()
153     sha2processBytes(state, &appendend, 1);  in sha2finish()
157     while (state->bufBytesUsed != 56)  in sha2finish()
158         sha2processBytes(state, &appendend, 1);  in sha2finish()
162         state->b[63 - i] = dataLenInBits;  in sha2finish()
165     sha2processBlock(state);  in sha2finish()
168     return state->h;  in sha2finish()