143     uint32_t working_state[16];  in chacha20_block()  local
146     memcpy( working_state,  in chacha20_block()
151         chacha20_inner_block( working_state );  in chacha20_block()
153     working_state[ 0] += initial_state[ 0];  in chacha20_block()
154     working_state[ 1] += initial_state[ 1];  in chacha20_block()
155     working_state[ 2] += initial_state[ 2];  in chacha20_block()
156     working_state[ 3] += initial_state[ 3];  in chacha20_block()
157     working_state[ 4] += initial_state[ 4];  in chacha20_block()
158     working_state[ 5] += initial_state[ 5];  in chacha20_block()
159     working_state[ 6] += initial_state[ 6];  in chacha20_block()
160     working_state[ 7] += initial_state[ 7];  in chacha20_block()
161     working_state[ 8] += initial_state[ 8];  in chacha20_block()
162     working_state[ 9] += initial_state[ 9];  in chacha20_block()
163     working_state[10] += initial_state[10];  in chacha20_block()
164     working_state[11] += initial_state[11];  in chacha20_block()
165     working_state[12] += initial_state[12];  in chacha20_block()
166     working_state[13] += initial_state[13];  in chacha20_block()
167     working_state[14] += initial_state[14];  in chacha20_block()
168     working_state[15] += initial_state[15];  in chacha20_block()
174         keystream[offset     ] = (unsigned char)( working_state[i]       );  in chacha20_block()
175         keystream[offset + 1U] = (unsigned char)( working_state[i] >>  8 );  in chacha20_block()
176         keystream[offset + 2U] = (unsigned char)( working_state[i] >> 16 );  in chacha20_block()
177         keystream[offset + 3U] = (unsigned char)( working_state[i] >> 24 );  in chacha20_block()
180     mbedtls_platform_zeroize( working_state, sizeof( working_state ) );  in chacha20_block()