### Install SwiftyRSA with Carthage

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Use this command to install SwiftyRSA using Carthage.

```bash
github "TakeScoop/SwiftyRSA"
```

--------------------------------

### Install SwiftyRSA with Cocoapods

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Use this command to install SwiftyRSA using Cocoapods.

```bash
pod 'SwiftyRSA'
```

--------------------------------

### Create PublicKey from SecKey reference

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PublicKey object from a SecKey reference.

```swift
let publicKey = try PublicKey(reference: secKey)
```

--------------------------------

### Create PrivateKey from SecKey reference

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PrivateKey object from a SecKey reference.

```swift
let privateKey = try PrivateKey(reference: secKey)
```

--------------------------------

### Create PublicKey from Data

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PublicKey object from raw Data.

```swift
let publicKey = try PublicKey(data: data)
```

--------------------------------

### Create PublicKey from PEM file

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PublicKey object from a PEM encoded file. Requires the file to be named 'public' in the project.

```swift
let publicKey = try PublicKey(pemNamed: "public")
```

--------------------------------

### Create PrivateKey from Data

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PrivateKey object from raw Data.

```swift
let privateKey = try PrivateKey(data: data)
```

--------------------------------

### Create PublicKey from DER file

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PublicKey object from a DER encoded file. Requires the file to be named 'public' in the project.

```swift
let publicKey = try PublicKey(derNamed: "public")
```

--------------------------------

### Create PrivateKey from PEM file

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PrivateKey object from a PEM encoded file. Requires the file to be named 'private' in the project.

```swift
let privateKey = try PrivateKey(pemNamed: "private")
```

--------------------------------

### Create PrivateKey from DER file

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PrivateKey object from a DER encoded file. Requires the file to be named 'private' in the project.

```swift
let privateKey = try PrivateKey(derNamed: "private")
```

--------------------------------

### Create PublicKey from Base64 string

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PublicKey object from a Base64 encoded string.

```swift
let publicKey = try PublicKey(base64Encoded: base64String)
```

--------------------------------

### Create PublicKey from PEM Named String

Source: https://github.com/takescoop/swiftyrsa/blob/master/CHANGELOG.md

Demonstrates creating a PublicKey instance from a PEM-encoded string identified by a name. This is part of the architecture overhaul in version 1.0.0.

```swift
PublicKey(pemNamed: "public")
```

--------------------------------

### Create PrivateKey from Base64 string

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PrivateKey object from a Base64 encoded string.

```swift
let privateKey = try PrivateKey(base64Encoded: base64String)
```

--------------------------------

### Create PublicKey from PEM string

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PublicKey object from a PEM encoded string.

```swift
let publicKey = try PublicKey(pemEncoded: str)
```

--------------------------------

### Read Multiple Public Keys from File

Source: https://github.com/takescoop/swiftyrsa/blob/master/CHANGELOG.md

Utilize the `publicKeysFromString()` method to efficiently load multiple public keys from a single input file. This functionality was introduced in version 0.4.0.

```swift
publicKeysFromString()
```

--------------------------------

### Integrate SwiftyRSA with Objective-C

Source: https://github.com/takescoop/swiftyrsa/blob/master/CHANGELOG.md

To use SwiftyRSA with Objective-C, specify the ObjC pod in your Podfile. Other integration methods like Carthage are unaffected.

```ruby
pod 'SwiftyRSA/ObjC'
```

--------------------------------

### Create PrivateKey from PEM string

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Initializes a PrivateKey object from a PEM encoded string.

```swift
let privateKey = try PrivateKey(pemEncoded: str)
```

--------------------------------

### Add X.509 Header to Public Key Data

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Prepends the X.509 header to raw public key data, making it a standard PEM-formatted public key.

```swift
let publicKey = PublicKey(data: data)
let publicKeyData = try publicKey.data()
let publicKey_with_X509_header = try SwiftyRSA.prependX509KeyHeader(keyData: publicKeyData)
```

--------------------------------

### Export Key as PEM, Base64, or Data

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Exports a PublicKey or PrivateKey object into PEM string, Base64 string, or raw Data format.

```swift
let pem = try key.pemString()
let base64 = try key.base64String()
let data = try key.data()
let reference = key.reference
let originalData = key.originalData
```

--------------------------------

### Encrypt String with Public Key

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Encrypts a clear string using a public key in PEM format. Requires the public key to be named 'public' in the project.

```swift
do {
    let publicKey = try PublicKey(pemNamed: "public")

    let str = "Clear String"
    let clear = try ClearMessage(string: str, using: .utf8)
    let encrypted = try clear.encrypted(with: publicKey, padding: .PKCS1)

    let data = encencrypted.data
    print(data)
    
    let base64String = encrypted.base64String
    print(base64String)

} catch {
    print(error)
}
```

--------------------------------

### Add Carthage Support for SwiftyRSA

Source: https://github.com/takescoop/swiftyrsa/blob/master/CHANGELOG.md

This entry indicates the addition of Carthage support for SwiftyRSA, addressing compiler warnings specific to Carthage integration.

```swift
#import <SwiftyRSA/SwiftyRSA.h>
```

--------------------------------

### Generate RSA Key Pair in Swift

Source: https://github.com/takescoop/swiftyrsa/blob/master/CHANGELOG.md

Use the `generateRSAKeyPair` function to create a new RSA key pair. This feature was added to support Swift 4.1 and Xcode 9.3.

```swift
SwiftyRSA.generateRSAKeyPair
```

--------------------------------

### Generate PEM Public and Private RSA Keys

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Generate RSA keys using ssh-keygen. Ensure to use the -m PEM flag for PEM format. The output keys will be in `~/public.pem` and `~/private.pem`.

```bash
$ ssh-keygen -t rsa -m PEM -f ~/mykey -N ''
$ cat ~/mykey > ~/private.pem
$ ssh-keygen -f ~/mykey.pub -e -m pem > ~/public.pem
```

--------------------------------

### Verify Signature with PublicKey

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Verifies a digital signature against a clear message using a public key and SHA1 digest.

```swift
let signature = try Signature(base64Encoded: "AAA===")
let isSuccessful = try clear.verify(with: publicKey, signature: signature, digestType: .sha1)
```

--------------------------------

### Generate RSA Key Pair

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Generates a new RSA key pair with a specified bit size (e.g., 2048 bits).

```swift
let keyPair = SwiftyRSA.generateRSAKeyPair(sizeInBits: 2048)
let privateKey = keyPair.privateKey
let publicKey = keyPair.publicKey
```

--------------------------------

### Encrypt Clear Message with PublicKey

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Encrypts a clear message using a provided PublicKey object with PKCS1 padding.

```swift
let str = "Clear Text"
let clear = try ClearMessage(string: str, using: .utf8)
let encrypted = try clear.encrypted(with: publicKey, padding: .PKCS1)

let data = encrypted.data
let base64String = encrypted.base64Encoded
```

--------------------------------

### Sign Clear Message with PrivateKey

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Signs a clear message using a private key and SHA1 digest. Returns the signature as Data and Base64 string.

```swift
let clear = try ClearMessage(string: "Clear Text", using: .utf8)
let signature = clear.signed(with: privateKey, digestType: .sha1)

let data = signature.data
let base64String = signature.base64String
```

--------------------------------

### Strip X.509 Header from Public Key

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Use this function to manually strip the X.509 header from a public key Data. Note that creating a PublicKey instance automatically performs this.

```swift
let publicKey_headerLess: Data = try SwiftyRSA.stripKeyHeader(keyData: publicKey_with_X509_header)
```

--------------------------------

### Decrypt Encrypted Message with Private Key

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Decrypts a Base64 encoded encrypted message using a private key in PEM format. Requires the private key to be named 'private' in the project.

```swift
let privateKey = try PrivateKey(pemNamed: "private")
let encrypted = try EncryptedMessage(base64Encoded: "AAA===")
let clear = try encrypted.decrypted(with: privateKey, padding: .PKCS1)

// Then you can use:
let data = clear.data
let base64String = clear.base64String
let string = clear.string(using: .utf8)
```

--------------------------------

### Decrypt Encrypted Message with PrivateKey

Source: https://github.com/takescoop/swiftyrsa/blob/master/README.md

Decrypts an encrypted message using a provided PrivateKey object with PKCS1 padding.

```swift
let encrypted = try EncryptedMessage(base64Encoded: base64String)
let clear = try encrypted.decrypted(with: privateKey, padding: .PKCS1)

let data = clear.data
let base64String = clear.base64Encoded
let string = try clear.string(using: .utf8)
```

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