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Fix handling of s2k_fo

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This commit is contained in:
Kabir Oberai 2024-11-04 21:14:48 -05:00
parent 0a02b29a4b
commit 85c9bdba55
1 changed files with 8 additions and 3 deletions
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11
Xcodes/AppleAPI/Sources/AppleAPI/Client.swift
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@ -54,7 +54,7 @@ public class Client {
let iterations = srpInit.iteration
do {
guard let encryptedPassword = self.pbkdf2(password: password, saltData: decodedSalt, keyByteCount: 32, prf: CCPseudoRandomAlgorithm(kCCPRFHmacAlgSHA256), rounds: iterations) else {
guard let encryptedPassword = self.pbkdf2(password: password, saltData: decodedSalt, keyByteCount: 32, prf: CCPseudoRandomAlgorithm(kCCPRFHmacAlgSHA256), rounds: iterations, protocol: srpInit.protocol) else {
return Fail(error: AuthenticationError.srpInvalidPublicKey)
.eraseToAnyPublisher()
}
@ -308,9 +308,13 @@ public class Client {
return Data(hash)
}
private func pbkdf2(password: String, saltData: Data, keyByteCount: Int, prf: CCPseudoRandomAlgorithm, rounds: Int) -> Data? {
private func pbkdf2(password: String, saltData: Data, keyByteCount: Int, prf: CCPseudoRandomAlgorithm, rounds: Int, protocol srpProtocol: SRPProtocol) -> Data? {
guard let passwordData = password.data(using: .utf8) else { return nil }
let hashedPasswordData = sha256(data: passwordData)
let hashedPasswordDataRaw = sha256(data: passwordData)
let hashedPasswordData = switch srpProtocol {
case .s2k: hashedPasswordDataRaw
case .s2k_fo: Data(hashedPasswordDataRaw.hexEncodedString().lowercased().utf8)
}
var derivedKeyData = Data(repeating: 0, count: keyByteCount)
let derivedCount = derivedKeyData.count
@ -584,6 +588,7 @@ public struct ServerSRPInitResponse: Decodable {
let salt: String
let b: String
let c: String
let `protocol`: SRPProtocol
}