@xivdyetools/crypto

Shared cryptographic utilities for the xivdyetools ecosystem.

Installation

npm install @xivdyetools/crypto

Usage

import {
  base64UrlEncode,
  base64UrlDecode,
  base64UrlEncodeBytes,
  base64UrlDecodeBytes,
  hexToBytes,
  bytesToHex,
} from '@xivdyetools/crypto';

// Base64URL encoding (for JWT)
const encoded = base64UrlEncode('{"alg":"HS256"}');
const decoded = base64UrlDecode(encoded);

// Byte encoding
const bytes = base64UrlDecodeBytes(encoded);
const reencoded = base64UrlEncodeBytes(bytes);

// Hex encoding
const hex = bytesToHex(bytes);
const backToBytes = hexToBytes(hex);

API

Base64URL (RFC 4648)

• base64UrlEncode(str: string): string - Encode UTF-8 string to Base64URL
• base64UrlDecode(str: string): string - Decode Base64URL to UTF-8 string
• base64UrlEncodeBytes(bytes: Uint8Array): string - Encode bytes to Base64URL
• base64UrlDecodeBytes(str: string): Uint8Array - Decode Base64URL to bytes

Hexadecimal

• hexToBytes(hex: string): Uint8Array - Convert hex string to bytes
• bytesToHex(bytes: Uint8Array): string - Convert bytes to hex string

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License

MIT © 2025-2026 Flash Galatine