Language: TypeScript
Label: safe
CWE: CWE-331 \u2014 Insufficient Entropy
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

Code:
  private async getKey() {
    const bKey = AesCbcCryptor.encoder.encode(this.cipherKey);
    const abHash = await crypto.subtle.digest('SHA-256', bKey.buffer);
    return crypto.subtle.importKey('raw', abHash, this.algo, true, ['encrypt', 'decrypt']);
  }