Shell script which uses Swift and CryptoKit underneath doesn't work after updating to Xcode 15 and MacOS Sonoma

Hi,

I'm having some trouble running a shell script that worked before I updated the Xcode and my MacOS. This is probably connected to the command line tools which were updated with these upgrades. I can't switch to an older version of the command line tools to verify this theory tho...

The script uses CryptoKit to decrypt some data which was encrypted using a SymmetricKey. The script:

#!/bin/bash
#
# DecryptScript.sh
#
# This script decrypts encrypted data using a symmetric key.

# Check for the correct number of arguments
if [ "$#" -ne 2 ]; then
echo "Usage: $0 <encrypted_file_path> <decrypted_file_path>"
exit 1
fi

# Get the input arguments
encryptedFilePath="$1"
decryptedFilePath="$2"

# Find the path to the script's directory
scriptDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

# Check if the symmetric key file exists in the same directory
symmetricKeyPath="$scriptDir/.sim.key"
if [ ! -f "$symmetricKeyPath" ]; then
echo "SymmetricKey file was not found in the same directory as the script."
exit 1
fi

# Decrypt the data
swift - <<EOF
import Foundation
import CryptoKit

let symmetricKeyURL = URL(fileURLWithPath: "$symmetricKeyPath")
let encryptedDataURL = URL(fileURLWithPath: "$encryptedFilePath")
let decryptedDataURL = URL(fileURLWithPath: "$decryptedFilePath")

guard let symmetricKeyData = try? Data(contentsOf: symmetricKeyURL) else {
    fatalError("Failed to read symmetric key data")
}

guard let encryptedData = try? Data(contentsOf: encryptedDataURL) else {
    fatalError("Failed to read encrypted data")
}

do {
    // Decrypt the data using AES-GCM
    let decryptionKey = SymmetricKey(data: symmetricKeyData)
    let sealedBox = try AES.GCM.SealedBox(combined: encryptedData)
    let decryptedData = try AES.GCM.open(sealedBox, using: decryptionKey)

    // Write the decrypted data to a file
    try decryptedData.write(to: decryptedDataURL)

    print("Decryption successful. Decrypted file saved at \(decryptedDataURL)")
} catch {
    print("Decryption failed: \(error.localizedDescription)")
}

EOF

The code in the project which encrypts the data and retrieves the key:

func encryptSymmetric(data: Data, password: String) throws -> (Data, Data) {
        let key = SymmetricKey(size: .bits256)

        guard let cipher = try? AES.GCM.seal(data, using: key).combined else {
            throw SomeCustomError.failedToEncryptData
        }

        let keyData = key.withUnsafeBytes { Data($0) }

        return (cipher, keyData)
    }

The error I'm presented with in the terminal is

JIT session error: Symbols not found: [ _$s9CryptoKit3AESO3GCMO4open_5using10Foundation4DataVAE9SealedBoxV_AA12SymmetricKeyVtKFZ, _$s9CryptoKit12SymmetricKeyVMa, _$s9CryptoKit3AESO3GCMO9SealedBoxV8combinedAGx_tKc10Foundation12DataProtocolRzlufC, _$s9CryptoKit12SymmetricKeyV4dataACx_tc10Foundation15ContiguousBytesRzlufC, _$s9CryptoKit3AESO3GCMO9SealedBoxVMa ]
Failed to materialize symbols: { (main, { _$s4main16encryptedDataURL10Foundation0D0Vvp, _$s4main15symmetricKeyURL10Foundation0D0Vvp, _$s10Foundation4DataVAcA0B8ProtocolAAWL, _$s4main16decryptedDataURL10Foundation0D0Vvp, _$sSa12_endMutationyyF, _$ss5print_9separator10terminatoryypd_S2StFfA0_, _$ss27_finalizeUninitializedArrayySayxGABnlF, _main, _$s10Foundation4DataV15_RepresentationOWOe, _$sSSWOh, _$ss5print_9separator10terminatoryypd_S2StFfA1_, _$s10Foundation4DataV5write2to7optionsyAA3URLV_So20NSDataWritingOptionsVtKFfA0_, ___swift_allocate_value_buffer, __swift_FORCE_LOAD_$_swiftFoundation_$_main, _$s10Foundation4DataV10contentsOf7optionsAcA3URLVh_So20NSDataReadingOptionsVtKcfcfA0_, __swift_FORCE_LOAD_$_swiftXPC_$_main, _$s10Foundation4DataV15_RepresentationOWOy, ___swift_project_value_buffer, _$s10Foundation4DataVAcA0B8ProtocolAAWl, __swift_FORCE_LOAD_$_swiftIOKit_$_main, _$ss26DefaultStringInterpolationVWOh, __swift_FORCE_LOAD_$_swiftCoreFoundation_$_main, _$s10Foundation3URLVACs23CustomStringConvertibleAAWl, __swift_FORCE_LOAD_$_swiftDarwin_$_main, __swift_FORCE_LOAD_$_swiftObjectiveC_$_main, _$s10Foundation3URLVACs23CustomStringConvertibleAAWL, __swift_FORCE_LOAD_$_swiftDispatch_$_main }) }

This leads me to believe that linking might not be working properly. I also found this thread where someone had the same issue but with a different framework.

NOTE: If I try to decrypt the data in my project, it works without any issues even on Xcode 15. It only fails if I try to run this script which worked before when I had the previous version of command line tools. I even tried updating to Xcode 15.1 beta and its command line tools, without success.

Any feedback is appreciated. Thank you.