Constants

Verse from sprintermax/UEFNVerseSnippets (VerseLogic/ExtraModules/Hashing/MD5/Constants.verse), by sprintermax, under the MIT license. Pinned at commit e9ba174a2. Compile-checked and ready to adapt for UEFN.

• _MD5Constants<internal> := module {
      # The size of the final MD5 hash in bytes.
      HashSize<md5_scoped> : int = 16 # 128 bits
      # The size of each processing block in bytes.
      BlockSize<md5_scoped> : int = 64 # 512 bits
  
      # Initial hash state values (defined by MD5 specification)
      # These are carefully chosen "magic" constants
      InitialStateA<md5_scoped> : int = 0x67452301  # 1732584193
      InitialStateB<md5_scoped> : int = 0xEFCDAB89  # 4023233417
      InitialStateC<md5_scoped> : int = 0x98BADCFE  # 2562383102
      InitialStateD<md5_scoped> : int = 0x10325476  # 271733878
  
      # Precomputed constants derived from the MD5 Spec sine function.
      # Formula: `for (X := 0..63) { Floor[2^32 * Abs(Sin(X + 1))] }`
      # These ensure good avalanche effect in the hash function.
      SineTable<md5_scoped>: []int = array{
          # Round 1 (operations 0-15)
          0xD76AA478, 0xE8C7B756, 0x242070DB, 0xC1BDCEEE,
          0xF57C0FAF, 0x4787C62A, 0xA8304613, 0xFD469501,
          0x698098D8, 0x8B44F7AF, 0xFFFF5BB1, 0x895CD7BE,
          0x6B901122, 0xFD987193, 0xA679438E, 0x49B40821,
          # Round 2 (operations 16-31)
          0xF61E2562, 0xC040B340, 0x265E5A51, 0xE9B6C7AA,
          0xD62F105D, 0x02441453, 0xD8A1E681, 0xE7D3FBC8,
          0x21E1CDE6, 0xC33707D6, 0xF4D50D87, 0x455A14ED,
          0xA9E3E905, 0xFCEFA3F8, 0x676F02D9, 0x8D2A4C8A,
          # Round 3 (operations 32-47)
          0xFFFA3942, 0x8771F681, 0x6D9D6122, 0xFDE5380C,
          0xA4BEEA44, 0x4BDECFA9, 0xF6BB4B60, 0xBEBFBC70,
          0x289B7EC6, 0xEAA127FA, 0xD4EF3085, 0x04881D05,
          0xD9D4D039, 0xE6DB99E5, 0x1FA27CF8, 0xC4AC5665,
          # Round 4 (operations 48-63)
          0xF4292244, 0x432AFF97, 0xAB9423A7, 0xFC93A039,
          0x655B59C3, 0x8F0CCC92, 0xFFEFF47D, 0x85845DD1,
          0x6FA87E4F, 0xFE2CE6E0, 0xA3014314, 0x4E0811A1,
          0xF7537E82, 0xBD3AF235, 0x2AD7D2BB, 0xEB86D391
      }