Question

使用在El Capitan下运行的swift 2.2，Xcode 7.3。

试过这个......

public func generateKeyPair(publicKeyTag: String, privateKeyTag:String,` `keySize: Int) -> KeyPair?  {

    let privateKeyAttr: [NSString: AnyObject] = [
        kSecAttrIsPermanent: true,
    kSecAttrApplicationTag: privateKeyTag
]
let publicKeyAttr: [NSString: AnyObject] = [
    kSecAttrIsPermanent: true,
    kSecAttrApplicationTag: publicKeyTag
]
let parameters: [NSString: AnyObject] = [
    kSecAttrKeyType: kSecAttrKeyTypeRSA,
    kSecAttrKeySizeInBits: keySize,
    kSecPrivateKeyAttrs: privateKeyAttr,
    kSecPublicKeyAttrs: publicKeyAttr
]

var publicKey: SecKey?
var privateKey: SecKey?
let result = SecKeyGeneratePair(parameters, &publicKey, &privateKey)

if result != errSecSuccess {
    return nil
}
return KeyPair(publicKey: publicKey!, privateKey: privateKey!)

不幸的是，它产生nil，nil作为公钥/私钥对。

我打电话给：

generateKeyPair("ch.blah.public",privateKeyTag: "ch.blah.private",keySize: 32)

我在这里缺少什么？显然这曾经有用吗？

Generate keychain key with swift 2.0

它打印的错误是0;哪种表明它确实有效？

Answer 1

您使用RSA的无效密钥长度。此外，kSecAttrApplicationTag必须是NSData对象，而不是NSString对象。

public func generateKeyPair(publicKeyTag: String, privateKeyTag:String, keySize: Int) {       
    let privateKeyAttr: [NSString: AnyObject] = [
        kSecAttrIsPermanent: true,
        kSecAttrApplicationTag: privateKeyTag.dataUsingEncoding(NSUTF8StringEncoding)!
    ]
    let publicKeyAttr: [NSString: AnyObject] = [
        kSecAttrIsPermanent: true,
        kSecAttrApplicationTag: publicKeyTag.dataUsingEncoding(NSUTF8StringEncoding)!
    ]
    let parameters: [NSString: AnyObject] = [
        kSecAttrKeyType: kSecAttrKeyTypeRSA,
        kSecAttrKeySizeInBits: keySize,
        kSecPrivateKeyAttrs: privateKeyAttr,
        kSecPublicKeyAttrs: publicKeyAttr
    ]

    var publicKey: SecKey?
    var privateKey: SecKey?
    let result = SecKeyGeneratePair(parameters, &publicKey, &privateKey)

    if result != errSecSuccess {
        print("Result: \(result)")
        return
    }

    print("Public: \(publicKey)")
    print("Private: \(privateKey)")
}

generateKeyPair("ch.blah.public", privateKeyTag: "ch.blah.private", keySize: 2048)

GenerateKeyPair在swift 2.2中发生了变化

1 个答案: