Function encapsulateBitsImpl

lib/internal/crypto/webcrypto.js:1353–1392

(encapsulationAlgorithm, encapsulationKey)

}

function encapsulateBitsImpl(encapsulationAlgorithm, encapsulationKey) {
  emitExperimentalWarning('The encapsulateBits Web Crypto API method');
  const prefix = prepareSubtleMethod(
    this, 'encapsulateBits', arguments.length, 2);
  let i = 0;
  encapsulationAlgorithm = convertSubtleArgument(
    prefix, 'AlgorithmIdentifier', encapsulationAlgorithm, i++);
  encapsulationKey = convertSubtleArgument(
    prefix, 'CryptoKey', encapsulationKey, i++);

  const normalizedEncapsulationAlgorithm =
    normalizeAlgorithm(encapsulationAlgorithm, 'encapsulate');
  const keyAlgorithm = getCryptoKeyAlgorithm(encapsulationKey);

  if (normalizedEncapsulationAlgorithm.name !== keyAlgorithm.name) {
    throw lazyDOMException(
      'key algorithm mismatch',
      'InvalidAccessError');
  }

  if (!hasCryptoKeyUsage(encapsulationKey, 'encapsulateBits')) {
    throw lazyDOMException(
      'encapsulationKey does not have encapsulateBits usage',
      'InvalidAccessError');
  }

  switch (keyAlgorithm.name) {
    case 'ML-KEM-512':
    case 'ML-KEM-768':
    case 'ML-KEM-1024':
      return require('internal/crypto/ml_kem')
        .mlKemEncapsulate(encapsulationKey);
    /* c8 ignore start */
    default: {
      const assert = require('internal/assert');
      assert.fail('Unreachable code');
    }
    /* c8 ignore stop */
  }
}

function encapsulateKey(
  encapsulationAlgorithm,