AES-GCM works on Hex encoded string but not on Data

[sreekanthps]

Describe the bug
When Trtying AES-GCM encrpyption, the IV and AES Key need to be hex-encoded string converted to Array and does not work random Data converted to Array.

Is this expected to working this way or am i missing any point , I am using Swift random IV and key Generator

public static func generate(count: Int) throws -> Data {
guard count > 0 else {
throw SecureRandomError.countMustBeGreaterThanZero
}

    var generatedRandom = Data(count: count)

    let randomGenerationStatus = generatedRandom.withUnsafeMutableBytes { mutableRandomBytes in
        // Force unwrapping is ok, since the buffer is guaranteed not to be empty.
        // From the docs: If the baseAddress of this buffer is nil, the count is zero.
        // swiftlint:disable:next force_unwrapping
        SecRandomCopyBytes(kSecRandomDefault, count, mutableRandomBytes.baseAddress!)
    }

    guard randomGenerationStatus == errSecSuccess else {
        throw SecureRandomError.failed(status: randomGenerationStatus)
    }

    return generatedRandom
}

Reproduce
Steps to reproduce:
1.