49 	    size_t block_size, uint8_t *iv,  in cfb_encrypt()  argument
56   TMP_ALLOC(buffer, block_size);  in cfb_encrypt()
60 …for (p = iv; length >= block_size; p = dst, dst += block_size, src += block_size, length -= block_…  in cfb_encrypt()
62 	  f(ctx, block_size, dst, p);  in cfb_encrypt()
63 	  memxor(dst, src, block_size);  in cfb_encrypt()
68 …for (p = iv; length >= block_size; p = dst, dst += block_size, src += block_size, length -= block_…  in cfb_encrypt()
70 	  f(ctx, block_size, buffer, p);  in cfb_encrypt()
71 	  memxor(dst, buffer, block_size);  in cfb_encrypt()
76     memcpy(iv, p, block_size);  in cfb_encrypt()
80       f(ctx, block_size, buffer, iv);  in cfb_encrypt()
92 	    size_t block_size, uint8_t *iv,  in cfb_decrypt()  argument
98       size_t left = length % block_size;  in cfb_decrypt()
104 	  f(ctx, block_size, dst, iv);  in cfb_decrypt()
105 	  f(ctx, length - block_size, dst + block_size, src);  in cfb_decrypt()
106 	  memcpy(iv, src + length - block_size, block_size);  in cfb_decrypt()
113 	  TMP_ALLOC(buffer, block_size);  in cfb_decrypt()
115 	  f(ctx, block_size, buffer, iv);  in cfb_decrypt()
133       buffer_size = CFB_BUFFER_LIMIT - (CFB_BUFFER_LIMIT % block_size);  in cfb_decrypt()
136       TMP_ALLOC(initial_iv, block_size);  in cfb_decrypt()
138       left = length % block_size;  in cfb_decrypt()
148 	  f(ctx, block_size, buffer, iv);  in cfb_decrypt()
149 	  f(ctx, part - block_size, buffer + block_size, dst);  in cfb_decrypt()
150 	  memcpy(iv, dst + part - block_size, block_size);  in cfb_decrypt()
159 	  f(ctx, block_size, buffer, iv);  in cfb_decrypt()
169 	     size_t block_size, uint8_t *iv,  in cfb8_encrypt()  argument
175   TMP_ALLOC(buffer, block_size * 2);  in cfb8_encrypt()
176   TMP_ALLOC(outbuf, block_size);  in cfb8_encrypt()
179   memcpy(buffer, iv, block_size);  in cfb8_encrypt()
185       if (pos == block_size)  in cfb8_encrypt()
187 	  memcpy(buffer, buffer + block_size, block_size);  in cfb8_encrypt()
191       f(ctx, block_size, outbuf, buffer + pos);  in cfb8_encrypt()
193       buffer[pos + block_size] = t;  in cfb8_encrypt()
197   memcpy(iv, buffer + pos, block_size);  in cfb8_encrypt()
202 	     size_t block_size, uint8_t *iv,  in cfb8_decrypt()  argument
208   TMP_ALLOC(buffer, block_size * 2);  in cfb8_decrypt()
209   TMP_ALLOC(outbuf, block_size * 2);  in cfb8_decrypt()
212   memcpy(buffer, iv, block_size);  in cfb8_decrypt()
213   memcpy(buffer + block_size, src,  in cfb8_decrypt()
214 	 length < block_size ? length : block_size);  in cfb8_decrypt()
219       for (i = 0; i < length && i < block_size; i++)  in cfb8_decrypt()
220 	f(ctx, block_size, outbuf + i, buffer + i);  in cfb8_decrypt()
228       if (i == block_size)  in cfb8_decrypt()
230 	  memcpy(buffer, buffer + block_size, block_size);  in cfb8_decrypt()
231 	  memcpy(buffer + block_size, src,  in cfb8_decrypt()
232 		 length < block_size ? length : block_size);  in cfb8_decrypt()
236   memcpy(iv, buffer + i, block_size);  in cfb8_decrypt()