text: /* MIT License
   *
   * Copyright (c) 2016-2020 INRIA, CMU and Microsoft Corporation
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  
  #include "Hacl_Streaming_MD5.h"
  
  Hacl_Streaming_SHA2_state_sha2_224 *Hacl_Streaming_MD5_legacy_create_in_md5()
  {
    uint8_t *buf = (uint8_t *)KRML_HOST_CALLOC((uint32_t)64U, sizeof (uint8_t));
    uint32_t *block_state = (uint32_t *)KRML_HOST_CALLOC((uint32_t)4U, sizeof (uint32_t));
    Hacl_Streaming_SHA2_state_sha2_224 s;
    s.block_state = block_state;
    s.buf = buf;
    s.total_len = (uint64_t)0U;
    KRML_CHECK_SIZE(sizeof (Hacl_Streaming_SHA2_state_sha2_224), (uint32_t)1U);
    {
      Hacl_Streaming_SHA2_state_sha2_224
      *p =
        (Hacl_Streaming_SHA2_state_sha2_224 *)KRML_HOST_MALLOC(sizeof (
            Hacl_Streaming_SHA2_state_sha2_224
          ));
      p[0U] = s;
      Hacl_Hash_Core_MD5_legacy_init(block_state);
      return p;
    }
  }
  
  void Hacl_Streaming_MD5_legacy_init_md5(Hacl_Streaming_SHA2_state_sha2_224 *s)
  {
    Hacl_Streaming_SHA2_state_sha2_224 scrut = *s;
    uint8_t *buf = scrut.buf;
    uint32_t *block_state = scrut.block_state;
    Hacl_Hash_Core_MD5_legacy_init(block_state);
    {
      Hacl_Streaming_SHA2_state_sha2_224 lit;
      lit.block_state = block_state;
      lit.buf = buf;
      lit.total_len = (uint64_t)0U;
      s[0U] = lit;
    }
  }
  
  void
  Hacl_Streaming_MD5_legacy_update_md5(
    Hacl_Streaming_SHA2_state_sha2_224 *p,
    uint8_t *data,
    uint32_t len
  )
  {
    Hacl_Streaming_SHA2_state_sha2_224 s = *p;
    uint64_t total_len = s.total_len;
    uint32_t sz;
    if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
    {
      sz = (uint32_t)64U;
    }
    else
    {
      sz = (uint32_t)(total_len % (uint64_t)(uint32_t)64U);
    }
    if (len <= (uint32_t)64U - sz)
    {
      Hacl_Streaming_SHA2_state_sha2_224 s1 = *p;
      uint32_t *block_state1 = s1.block_state;
      uint8_t *buf = s1.buf;
      uint64_t total_len1 = s1.total_len;
      uint32_t sz1;
      if (total_len1 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len1 > (uint64_t)0U)
      {
        sz1 = (uint32_t)64U;
      }
      else
      {
        sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)64U);
      }
      {
        uint8_t *buf2 = buf + sz1;
        uint64_t total_len2;
        memcpy(buf2, data, len * sizeof (uint8_t));
        total_len2 = total_len1 + (uint64_t)len;
        {
          Hacl_Streaming_SHA2_state_sha2_224 lit;
          lit.block_state = block_state1;
          lit.buf = buf;
          lit.total_len = total_len2;
          *p = lit;
          return;
        }
      }
    }
    if (sz == (uint32_t)0U)
    {
      Hacl_Streaming_SHA2_state_sha2_224 s1 = *p;
      uint32_t *block_state1 = s1.block_state;
      uint8_t *buf = s1.buf;
      uint64_t total_len1 = s1.total_len;
      uint32_t sz1;
      if (total_len1 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len1 > (uint64_t)0U)
      {
        sz1 = (uint32_t)64U;
      }
      else
      {
        sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)64U);
      }
      {
        uint32_t ite;
        uint32_t n_blocks;
        uint32_t data1_len;
        uint32_t data2_len;
        uint8_t *data1;
        uint8_t *data2;
        uint8_t *dst;
        if (!(sz1 == (uint32_t)0U))
        {
          Hacl_Hash_MD5_legacy_update_multi(block_state1, buf, (uint32_t)1U);
        }
        if ((uint64_t)len % (uint64_t)(uint32_t)64U == (uint64_t)0U && (uint64_t)len > (uint64_t)0U)
        {
          ite = (uint32_t)64U;
        }
        else
        {
          ite = (uint32_t)((uint64_t)len % (uint64_t)(uint32_t)64U);
        }
        n_blocks = (len - ite) / (uint32_t)64U;
        data1_len = n_blocks * (uint32_t)64U;
        data2_len = len - data1_len;
        data1 = data;
        data2 = data + data1_len;
        Hacl_Hash_MD5_legacy_update_multi(block_state1, data1, data1_len / (uint32_t)64U);
        dst = buf;
        memcpy(dst, data2, data2_len * sizeof (uint8_t));
        {
          Hacl_Streaming_SHA2_state_sha2_224 lit;
          lit.block_state = block_state1;
          lit.buf = buf;
          lit.total_len = total_len1 + (uint64_t)len;
          *p = lit;
          return;
        }
      }
    }
    {
      uint32_t diff = (uint32_t)64U - sz;
      uint8_t *data1 = data;
      uint8_t *data2 = data + diff;
      Hacl_Streaming_SHA2_state_sha2_224 s10 = *p;
      uint32_t *block_state10 = s10.block_state;
      uint8_t *buf0 = s10.buf;
      uint64_t total_len10 = s10.total_len;
      uint32_t sz10;
      if (total_len10 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len10 > (uint64_t)0U)
      {
        sz10 = (uint32_t)64U;
      }
      else
      {
        sz10 = (uint32_t)(total_len10 % (uint64_t)(uint32_t)64U);
      }
      {
        uint8_t *buf2 = buf0 + sz10;
        uint64_t total_len2;
        memcpy(buf2, data1, diff * sizeof (uint8_t));
        total_len2 = total_len10 + (uint64_t)diff;
        {
          Hacl_Streaming_SHA2_state_sha2_224 lit;
          Hacl_Streaming_SHA2_state_sha2_224 s1;
          uint32_t *block_state1;
          uint8_t *buf;
          uint64_t total_len1;
          uint32_t sz1;
          uint32_t ite;
          uint32_t n_blocks;
          uint32_t data1_len;
          uint32_t data2_len;
          uint8_t *data11;
          uint8_t *data21;
          uint8_t *dst;
          lit.block_state = block_state10;
          lit.buf = buf0;
          lit.total_len = total_len2;
          *p = lit;
          s1 = *p;
          block_state1 = s1.block_state;
          buf = s1.buf;
          total_len1 = s1.total_len;
          if (total_len1 % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len1 > (uint64_t)0U)
          {
            sz1 = (uint32_t)64U;
          }
          else
          {
            sz1 = (uint32_t)(total_len1 % (uint64_t)(uint32_t)64U);
          }
          if (!(sz1 == (uint32_t)0U))
          {
            Hacl_Hash_MD5_legacy_update_multi(block_state1, buf, (uint32_t)1U);
          }
          if
          (
            (uint64_t)(len - diff)
            % (uint64_t)(uint32_t)64U
            == (uint64_t)0U
            && (uint64_t)(len - diff) > (uint64_t)0U
          )
          {
            ite = (uint32_t)64U;
          }
          else
          {
            ite = (uint32_t)((uint64_t)(len - diff) % (uint64_t)(uint32_t)64U);
          }
          n_blocks = (len - diff - ite) / (uint32_t)64U;
          data1_len = n_blocks * (uint32_t)64U;
          data2_len = len - diff - data1_len;
          data11 = data2;
          data21 = data2 + data1_len;
          Hacl_Hash_MD5_legacy_update_multi(block_state1, data11, data1_len / (uint32_t)64U);
          dst = buf;
          memcpy(dst, data21, data2_len * sizeof (uint8_t));
          {
            Hacl_Streaming_SHA2_state_sha2_224 lit0;
            lit0.block_state = block_state1;
            lit0.buf = buf;
            lit0.total_len = total_len1 + (uint64_t)(len - diff);
            *p = lit0;
          }
        }
      }
    }
  }
  
  void Hacl_Streaming_MD5_legacy_finish_md5(Hacl_Streaming_SHA2_state_sha2_224 *p, uint8_t *dst)
  {
    Hacl_Streaming_SHA2_state_sha2_224 scrut = *p;
    uint32_t *block_state = scrut.block_state;
    uint8_t *buf_ = scrut.buf;
    uint64_t total_len = scrut.total_len;
    uint32_t r;
    if (total_len % (uint64_t)(uint32_t)64U == (uint64_t)0U && total_len > (uint64_t)0U)
    {
      r = (uint32_t)64U;
    }
    else
    {
      r = (uint32_t)(total_len % (uint64_t)(uint32_t)64U);
    }
    {
      uint8_t *buf_1 = buf_;
      uint32_t tmp_block_state[4U] = { 0U };
      uint32_t ite;
      uint8_t *buf_last;
      uint8_t *buf_multi;
      uint64_t prev_len_last;
      memcpy(tmp_block_state, block_state, (uint32_t)4U * sizeof (uint32_t));
      if (r % (uint32_t)64U == (uint32_t)0U && r > (uint32_t)0U)
      {
        ite = (uint32_t)64U;
      }
      else
      {
        ite = r % (uint32_t)64U;
      }
      buf_last = buf_1 + r - ite;
      buf_multi = buf_1;
      Hacl_Hash_MD5_legacy_update_multi(tmp_block_state, buf_multi, (uint32_t)0U);
      prev_len_last = total_len - (uint64_t)r;
      Hacl_Hash_MD5_legacy_update_last(tmp_block_state, prev_len_last, buf_last, r);
      Hacl_Hash_Core_MD5_legacy_finish(tmp_block_state, dst);
    }
  }
  
  void Hacl_Streaming_MD5_legacy_free_md5(Hacl_Streaming_SHA2_state_sha2_224 *s)
  {
    Hacl_Streaming_SHA2_state_sha2_224 scrut = *s;
    uint8_t *buf = scrut.buf;
    uint32_t *block_state = scrut.block_state;
    KRML_HOST_FREE(block_state);
    KRML_HOST_FREE(buf);
    KRML_HOST_FREE(s);
  }
  
  