gistfile1.scala

	val key: PGPPublicKey = ...
	
	def encrypt(plaintext: String): String = {
		val baos = new ByteArrayOutputStream()
		val literalDataGenerator = new PGPLiteralDataGenerator()
		val comData = new PGPCompressedDataGenerator(CompressionAlgorithmTags.ZLIB)	// I've also tried other compression algorithms
		val bytes = plaintext.getBytes("utf-8")
		val BufferSize = 1 << 16
		import resource.managed // The "managed" method with for is just a nice replacement of try/catch/finally{x.close()}
		for{
			edg <- managed(new PGPEncryptedDataGenerator(SymmetricKeyAlgorithmTags.CAST5, new SecureRandom(), "BC"))
			_ = edg.addMethod(key)
			armoredOut <- managed(new ArmoredOutputStream(baos))
			encryptedOut <- managed(edg.open(armoredOut, bytes.length))
			compressedOut <- managed(comData.open(encryptedOut))
			literalOut <- managed(literalDataGenerator.open(compressedOut, PGPLiteralData.BINARY, "x.txt", new Date(), new Array[Byte](BufferSize)))
		}{
			literalOut.write(bytes)
			literalOut.flush();
		}
		baos.toString
	}