comment générer la clé publique/privée paire avec comme ci-dessous dans ios, rapide

Question

Voilà comment je produis clé publique/privée paire

var statusCode: OSStatus 
var publicKey: SecKey? 
var privateKey: SecKey? 

let publicKeyAttribute: [NSObject : NSObject] = [kSecAttrIsPermanent: true as NSObject, kSecAttrApplicationTag: "publictag".data(using: String.Encoding.utf8)! as NSObject] 

let privateKeyAtrribute: [NSObject: NSObject] = [kSecAttrIsPermanent: true as NSObject, kSecAttrApplicationTag: "privatetag".data(using: String.Encoding.utf8)! as NSObject] 

var keyPairAttr = [NSObject: Any]() 
keyPairAttr[kSecAttrType] = kSecAttrKeyTypeRSA 
keyPairAttr[kSecAttrKeySizeInBits] = 2048 
keyPairAttr[kSecReturnData] = true 
keyPairAttr[kSecPublicKeyAttrs] = publicKeyAttribute 
keyPairAttr[kSecPrivateKeyAttrs] = privateKeyAtrribute 


statusCode = SecKeyGeneratePair(keyPairAttr as CFDictionary, &publicKey, &privateKey) 

Cela génère une paire de clés comme ci-dessous,

clé publique:

Optional(<SecKeyRef algorithm id: 1, key type: RSAPublicKey, version: 4, block size: 2048 bits, exponent: {hex: 10001, decimal: 65537}, modulus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addr: 0x60800002e580>) 

clé privée:

Optional(<SecKeyRef algorithm id: 1, key type: RSAPrivateKey, version: 4, block size: 2048 bits, addr: 0x60800002e5c0>) 

Quelles sont ces .pem ou .der

Mais j'ai besoin comme ci-dessous

clé publique:

-----BEGIN RSA PUBLIC KEY----- 
    MIIBCgKCAQEA0bipoOhkkvPxcsyOzcqsIUeVe0+iwe8W7N4EbHZMgujRERu1TPpy 
    UcCO0uuKmm1TU09Kl40rRvDbtgB1YcGV3FPnNp3sOyFVsdyZ5bzxZtyyLrSWtj/n 
    bLnGwaG9xJSwd2R/pTQLzOLV5KldwD2eUb3Z4Z4e9Z8II7eWgGaCLLqbrtEAa05N 
    EqARckxrzJ1S3j+59h4AQovF72KI90/kRPryT2OGDiVlJ6CTjn2ZnTYcx65X6Rwf 
    AeJKHZAGhw96j9tXyS+dJcXy4IBUTi3PXw0aEfhHQr/JsSHuMp/8mrhVJEokXb1C 
    gKDZgJXujpGhCBdztHBAJxLBQMlODg7srwIDAQAB 
    -----END RSA PUBLIC KEY----- 


and private key should be like : 

-----BEGIN RSA PRIVATE KEY----- 
MIIEowIBAAKCAQEAsfxMagVKY5++61Kot0esyhEOesqyQlZNvWbqMBcOoaOAb3pk 
LvwaGJ2YtD12u4yDEKcY5rpX7B/2t8GBHf+74NG47zAutf4Gf6qgQRUmIx2b7i4k 
WBt3KIifb/Zfs9KVJLhD4007bg1OtXA4kIhhXiuvhajDjDLOEthogF45CkJe+N67 
JnH5hVW5CqBxPyRCrWCFbEHcXs5H515JV/Kz1+JVrB2/M03fW751wptO2GdGwsde 
ofqQzY+WUzqUihXigIjAVLFRemky3HpwuhzXUJn6A0ZD4tkk1JLstpSSJdBpH+L2 
b9QlOitehxFgRsYmto+idpD1XrS9UyUtmpbTuwIDAQABAoIBAQCYvrAJcJ7lnmtn 
Ytm96LoF89tcT+Xpfk1bFR43xSHeYAXSJdQiamIu69joHbNuwuib+vsoz5Sy5L+D 
9YHMb/MZvoIaa1w6/VUwbQr4r6C6FCgEoP65ymBZnd5OZL6/ASLTj3tbb6VoDe2V 
UkiI6TG+cnlAmJOxFsy5aZVNTQ9gmCMS0+AdpTbDsxTPg3y0EKFXeVRyKjq0lO9m 
p3G5yHkFjzWWY6s5XHx27gDTt8eXg/un72Qsz1rh5iUnAoxrga0Oco3Yk9DMvMwz 
a1I1Lo5fpB6FbTGX3k24heSnLDFEnlBvsBBg0g/n/qgwoZJ81MgG8Q4kAfeScuCI 
sYVnHEBpAoGBAOpnrKEkyhk1rXG4Md+z1/odhqx89mV7mF1ttW4IhFcwpJSMohsG 
r27Ic87whkpRxz2Mwj3B5WPGne4UkbvniH46n3jEW7ZIUF+ASVWkjMaGJWtOqSLC 
I19Snie9WvpREwaCVuvT2l4IeM1WL5gKotBwa3csZgGYH6gcyW5Ipbo/AoGBAMJh 
/+WXbohF4+A989q0jYjRRhKwUJAYeK8/AePrx8MnAXnRd09TiqeGn0Xig/RNZ0RE 
96/TC1dTIBIHk5aDMy3vQhhYF0KbwcQWmCOnGo1qNTTaWTa3UitFMWf0hO0HuZtp 
RyD1YwhHP0W2tiK2GVjCreqIYASCpYKLq5Qq1K+FAoGARk2h8RLfqn/27UyZaMa/ 
2DxS0BkKrZVMNXlaGQ5k4uGr+wHS/NgcddWZJk/tdwzf/Q3ilDM7YZmIdIemzfy7 
a2CZw9bgyuMVeA85733S2xgQ0QZepBYmFcjptnGMf9chJaqh90krDVjtImjfDXLj 
MjEFilC+p2vA0uMPZwxS6HECgYAc5dLUQBoHmlRRTwSEvBjagToopxujAHBYpUZT 
qwbMpWzbvl89ZM8VLrdY/V7en+89P/+OnRJvjgUTiRrQ4npmVs59rgLvPRamXzGJ 
A1u4MFTuoZNnxgMqOaQprzlfv6lBSHpxlOl/HpByfcJAENBd2LtgRZv4r6+JY9hD 
M8bgvQKBgCDTSCLj5c1CYyuJMdrz9L5+xLFmrmL48djhK460ZcmcZ/gP808CyXx/ 
sDneow+JWt7Jb3p5zyUvvq1aDGNSsn4plB2rg7AqtoHcZYyFFZGI/K/b6JZna1yu 
FUYOfcanunabxY1wPQxuvR+AEuufBjB0aKg+qkLCCN1HYQtLs+N8 
-----END RSA PRIVATE KEY----- 

comment le faire. espérons votre aide avec ceci.

Answer 1

Vous pouvez créer une paire de clés publique/privée à l'aide de la méthode generateKeyPair ci-dessous, puis utiliser la méthode SecKeyCopyExternalRepresentation pour la représentation externe.

swift3

//tuple type for public/private key pair at class level 
typealias KeyPair = (publicKey: SecKey, privateKey: SecKey) 

// In your code block 

    let publicKeyTag: String = "com.org.yourapp.publickey" 
    let privateKeyTag: String = "com.org.yourapp.privatekey" 
    let keyPair = generateKeyPair(publicKeyTag, privateTag: privateKeyTag, keySize: 2048) 
    var pbError:Unmanaged<CFError>? 
    var prError:Unmanaged<CFError>? 
    guard let pbData = SecKeyCopyExternalRepresentation((keyPair?.publicKey)!, &pbError) as Data? else { 
     print("error: ", pbError!.takeRetainedValue() as Error) 
     return 
    } 
    guard let prData = SecKeyCopyExternalRepresentation((keyPair?.privateKey)!, &prError) as Data? else { 
     print("private key error: ") 
     return 
    } 
    let strPublicKey = appendPrefixSuffixTo(pbData.base64EncodedString(options: .lineLength64Characters), prefix: "-----BEGIN RSA PUBLIC KEY-----\n", suffix: "\n-----END RSA PUBLIC KEY-----") 
    print("public key: \n", strPublicKey) 

    let strPrivateKey = appendPrefixSuffixTo(prData.base64EncodedString(options: .lineLength64Characters), prefix: "-----BEGIN RSA PRIVATE KEY-----\n", suffix: "\n-----END RSA PRIVATE KEY-----") 
    print("private key: \n", strPrivateKey) 

fonction d'assistance:

func appendPrefixSuffixTo(_ string: String, prefix: String, suffix: String) -> String { 
    return "\(prefix)\(string)\(suffix)" 
} 

méthode generateKeyPair retour public/privé KeyPair

func generateKeyPair(_ publicTag: String, privateTag: String, keySize: Int) -> KeyPair? { 
    var sanityCheck: OSStatus = noErr 
    var publicKey: SecKey? 
    var privateKey: SecKey? 
    // Container dictionaries 
    var privateKeyAttr = [AnyHashable : Any]() 
    var publicKeyAttr = [AnyHashable: Any]() 
    var keyPairAttr = [AnyHashable : Any]() 
    // Set top level dictionary for the keypair 
    keyPairAttr[(kSecAttrKeyType) as AnyHashable] = (kSecAttrKeyTypeRSA as Any) 
    keyPairAttr[(kSecAttrKeySizeInBits as AnyHashable)] = Int(keySize) 
    // Set private key dictionary 
    privateKeyAttr[(kSecAttrIsPermanent as AnyHashable)] = Int(true) 
    privateKeyAttr[(kSecAttrApplicationTag as AnyHashable)] = privateTag 
    // Set public key dictionary. 
    publicKeyAttr[(kSecAttrIsPermanent as AnyHashable)] = Int(true) 
    publicKeyAttr[(kSecAttrApplicationTag as AnyHashable)] = publicTag 

    keyPairAttr[(kSecPrivateKeyAttrs as AnyHashable)] = privateKeyAttr 
    keyPairAttr[(kSecPublicKeyAttrs as AnyHashable)] = publicKeyAttr 
    sanityCheck = SecKeyGeneratePair((keyPairAttr as CFDictionary), &publicKey, &privateKey) 
    if sanityCheck == noErr && publicKey != nil && privateKey != nil { 
     print("RSA key pair generation Successful") 
     return KeyPair(publicKey: publicKey!, privateKey: privateKey!) 
    } 
    return nil 
} 

sortie comme ci-dessous:

public key: 
-----BEGIN RSA PUBLIC KEY----- 
MIIBCgKCAQEAz1zfbybUt5jZX5P6ymy+g04wj3iTYCV8eGbkFyqFNsfN8Lnk6x4x 
zstfnpE6asV6NkBecQnT1a9X6AVxA4Mxq4CeysR10TRr8HGczQGKl7R3Nbvvmgw+ 
jX8LZGxsQTO6qYWhMAtOPFfsMW9iy3AsDE7OIYfya6y/l919ExbgPzJ+0nLdiBmd 
bmmzOQ1PaKt3OcxG6qZyBoixRTTOm4UDCLDzYdjz5dS1rbvb7pD15TpkZBkuMRm5 
QDv+xhKcz1UFGQP7ssZS++ZoQlF2CZJuLz8R1uUYg4xQnF0r1IBBrlVtKnblgMcA 
ZykNweGwrdPaWF3PeZmbvG+/m+Kt7/4BJwIDAQAB 
-----END RSA PUBLIC KEY-----