public static function ParagonIE_Sodium_Core_BLAKE2b::update in Automatic Updates 7

Same name and namespace in other branches

1. 8 vendor/paragonie/sodium_compat/src/Core/BLAKE2b.php \ParagonIE_Sodium_Core_BLAKE2b::update()

@internal You should not use this directly from another application

@psalm-suppress MixedArgument @psalm-suppress MixedAssignment @psalm-suppress MixedArrayAccess @psalm-suppress MixedArrayAssignment @psalm-suppress MixedArrayOffset @psalm-suppress MixedOperand

Parameters

SplFixedArray $ctx:

SplFixedArray $p:

int $plen:

Return value

void

Throws

SodiumException

TypeError

3 calls to ParagonIE_Sodium_Core_BLAKE2b::update()

ParagonIE_Sodium_Core_BLAKE2b::init in vendor/paragonie/sodium_compat/src/Core/BLAKE2b.php

@internal You should not use this directly from another application

ParagonIE_Sodium_Crypto::generichash in vendor/paragonie/sodium_compat/src/Crypto.php

Calculate a BLAKE2b hash.

ParagonIE_Sodium_Crypto::generichash_update in vendor/paragonie/sodium_compat/src/Crypto.php

Update a hashing context for BLAKE2b with $message

File

vendor/paragonie/sodium_compat/src/Core/BLAKE2b.php, line 455

Class

ParagonIE_Sodium_Core_BLAKE2b

Class ParagonIE_Sodium_Core_BLAKE2b

Code

public static function update(SplFixedArray $ctx, SplFixedArray $p, $plen) {
  self::pseudoConstructor();
  $offset = 0;
  while ($plen > 0) {
    $left = $ctx[4];
    $fill = 256 - $left;
    if ($plen > $fill) {

      # memcpy( S->buf + left, in, fill ); /* Fill buffer */
      for ($i = $fill; $i--;) {
        $ctx[3][$i + $left] = $p[$i + $offset];
      }

      # S->buflen += fill;
      $ctx[4] += $fill;

      # blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
      self::increment_counter($ctx, 128);

      # blake2b_compress( S, S->buf ); /* Compress */
      self::compress($ctx, $ctx[3]);

      # memcpy( S->buf, S->buf + BLAKE2B_BLOCKBYTES, BLAKE2B_BLOCKBYTES ); /* Shift buffer left */
      for ($i = 128; $i--;) {
        $ctx[3][$i] = $ctx[3][$i + 128];
      }

      # S->buflen -= BLAKE2B_BLOCKBYTES;
      $ctx[4] -= 128;

      # in += fill;
      $offset += $fill;

      # inlen -= fill;
      $plen -= $fill;
    }
    else {
      for ($i = $plen; $i--;) {
        $ctx[3][$i + $left] = $p[$i + $offset];
      }
      $ctx[4] += $plen;
      $offset += $plen;
      $plen -= $plen;
    }
  }
}