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fix android module name import fixes fix some imports use `@atproto/jwk` over local zod schema preview oauth client rename package alignment more alignment database implementation cleanup some types alignment switch implementation for es256 half of `verifyJwt` for android half of `verifyJwt` for iOS rm log `createJwt` android `createJwt` ios rm print cleanup native impl silence some warnings reorg, finish web impl follow the `CryptoImplementation` move some more things around normalize some names rename func add generate on android add android dep rm bool add alg better implementation ios jwk generation fix index.ts add `getRandomValues()` on native web `getRandomValues` silence ts error for missing crypto on web add `digest` for web add `digest` add module
2024-04-10 12:58:41 -07:00
parent 310d865440
commit 13607edd43
27 changed files with 1502 additions and 0 deletions
@@ -0,0 +1,37 @@
+import CryptoKit
+import JOSESwift
+
+class CryptoUtil {
+  // The equivalent of crypto.subtle.digest() with JS on web
+  public static func digest(data: Data) -> Data {
+    let hash = SHA256.hash(data: data)
+    return Data(hash)
+  }
+  
+  public static func getRandomValues(byteLength: Int) -> Data {
+    let bytes = (0..<byteLength).map { _ in UInt8.random(in: UInt8.min...UInt8.max) }
+    return Data(bytes)
+  }
+  
+  public static func generateKeyPair(kid: String?) throws -> (publicJWK: JWK, privateJWK: JWK)? {
+    let keyIdString = kid ?? UUID().uuidString
+    
+    let privateKey = P256.Signing.PrivateKey()
+    let publicKey = privateKey.publicKey
+    
+    let x = publicKey.x963Representation[1..<33].base64URLEncodedString()
+    let y = publicKey.x963Representation[33...].base64URLEncodedString()
+    let d = privateKey.rawRepresentation.base64URLEncodedString()
+    
+    let publicJWK = JWK(kty: "EC", use: "sig", crv: "P-256", kid: keyIdString, x: x, y: y, alg: "ES256")
+    let privateJWK = JWK(kty: "EC", use: "sig", crv: "P-256", kid: keyIdString, x: x, y: y, d: d, alg: "ES256")
+    
+    return (publicJWK, privateJWK)
+  }
+}
+
+extension Data {
+  func base64URLEncodedString() -> String {
+    return self.base64EncodedString().replacingOccurrences(of: "+", with: "-").replacingOccurrences(of: "/", with: "_").replacingOccurrences(of: "=", with: "")
+  }
+}