remove unused signing code from swift

supreme/src/swift/Krypto.swift

@@ -6,88 +6,8 @@
 import CryptoKit
 import Foundation
 
-@objc public class SignerProxy: NSObject {
-    let publicKey: SecKey
-    let privateKey: SecKey
-    init(_ pubKey: SecKey, _ privKey: SecKey) {
-        publicKey = pubKey
-        privateKey = privKey
-    }
-
-    @objc public func getPublicKey() throws -> Data
-    {
-        var error: Unmanaged<CFError>?
-        guard let result = SecKeyCopyExternalRepresentation(publicKey, &error)
-            else { throw error!.takeRetainedValue() as Error }
-        return result as Data
-    }
-
-    @objc public func sign(_ digest: String, _ data: Data) throws -> Data
-    {
-        let algorithm: SecKeyAlgorithm = switch digest {
-            case "SHA256": .ecdsaSignatureMessageX962SHA256
-            case "SHA384": .ecdsaSignatureMessageX962SHA384
-            case "SHA512": .ecdsaSignatureMessageX962SHA512
-            default: throw RuntimeError("Unsupported digest \(digest)")
-        }
-        guard SecKeyIsAlgorithmSupported(privateKey, .sign, algorithm)
-            else { throw RuntimeError("ECDSA with \(digest) is unsupported by this key") }
-
-        var error: Unmanaged<CFError>?
-        guard let signature = SecKeyCreateSignature(privateKey, algorithm, data as CFData, &error) as Data?
-            else { throw error!.takeRetainedValue() as Error }
-        return signature
-    }
-}
-
 @objc public class Krypto: NSObject {
 
-    // =========== SIGNING
-
-    @objc public static func createAttestedP256Key(_ alias: String) throws -> SignerProxy
-    {
-        guard let bundleId = Bundle.main.bundleIdentifier
-            else { throw RuntimeError("Failed to retrieve main bundle identifier") }
-        let tag = "kmp-crypto-\(bundleId)"
-    fputs("zero\n", stderr)
-        //var error: Unmanaged<CFError>?
-        /*guard let access = SecAccessControlCreateWithFlags(
-            kCFAllocatorDefault,
-            kSecAttrAccessibleWhenUnlockedThisDeviceOnly,
-            .privateKeyUsage,
-            &error)
-            else { throw error!.takeRetainedValue() as Error }*/
-
-        let privateKeyParams = [
-            kSecAttrLabel: "privkey-\(alias)",
-            kSecAttrIsPermanent: true,
-            kSecAttrApplicationTag: tag
-        ] as CFDictionary
-        let publicKeyParams = [
-            kSecAttrLabel: "pubkey-\(alias)",
-            kSecAttrIsPermanent: false,
-            kSecAttrApplicationTag: tag
-        ] as CFDictionary
-
-        let parameters = [
-            kSecAttrKeyType: kSecAttrKeyTypeEC,
-            kSecAttrKeySizeInBits: 256,
-            kSecAttrTokenID: kSecAttrTokenIDSecureEnclave,
-            kSecPublicKeyAttrs: publicKeyParams,
-            kSecPrivateKeyAttrs: privateKeyParams,
-        ] as CFDictionary
-
-    fputs("one\n", stderr)
-        var pubKey, privKey: SecKey?
-        let status = SecKeyGeneratePair(parameters, &pubKey, &privKey)
-        if (status != errSecSuccess) {
-            let e = SecCopyErrorMessageString(status, nil) as String? ?? "Unspecified security error"
-            throw RuntimeError("Failed to generate key: \(e)")
-        }
-    fputs("three\n", stderr)
-        return SignerProxy(pubKey!, privKey!)
-    }
-
     // =========== VERIFICATION
 
     fileprivate static func verifyECDSA_P256(_ pubkeyDER: Data, _ sigDER: Data, _ data: any Digest) throws -> Bool {