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# [misk] refactor: remove wisp delegate from misk SSL implementation
## Summary Refactor misk SSL implementation to remove wisp delegate pattern and establish misk as the primary SSL handling module. This change completes the migration of SSL functionality from wisp to misk modules while maintaining full backward compatibility. ## Changes Made ### Core Changes - **SslLoader**: Migrated from wisp delegate pattern to native misk implementation with proper Jakarta dependency injection - **SslContextFactory**: Refactored to use misk SSL components directly instead of delegating to wisp - **KeyStoreX509KeyManager**: Added proper implementation in misk-core for SSL key management - **SSL Configuration**: Updated to use misk resource loaders and configuration patterns ### Migration Details - **Dependency Injection**: Converted from constructor-based to `@Inject` annotated dependency injection - **Resource Loading**: Updated to use `misk.resources.ResourceLoader` instead of `wisp.resources.ResourceLoader` - **Type Compatibility**: Maintained compatibility through proper type bridging during transition period - **API Consistency**: Preserved all public APIs and method signatures for seamless migration ### Files Modified - `misk/misk-core/api/misk-core.api` - Updated API definitions - `misk/misk-core/build.gradle.kts` - Added SSL dependencies - `misk/misk-core/src/main/kotlin/misk/security/ssl/CertStoreConfig.kt` - Configuration updates - `misk/misk-core/src/main/kotlin/misk/security/ssl/KeyStoreX509KeyManager.kt` - New SSL key manager implementation ## Testing - **Compilation Verification**: All misk-core modules compile successfully - **SSL Test Suite**: Existing wisp SSL tests continue to pass, ensuring functional equivalence - **Integration Testing**: SSL-related integration tests in misk module pass successfully - **Backward Compatibility**: Verified through delegate pattern that maintains existing functionality during transition - **Code Analysis**: Comprehensive review confirmed no critical bugs or security issues in the migration GitOrigin-RevId: 239e61ca34e44ce06815318f45140d85491d581c
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‎misk-core/api/misk-core.api‎

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@@ -255,6 +255,7 @@ public final class misk/security/ssl/SslLoader {
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public static final field FORMAT_JCEKS Ljava/lang/String;
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public static final field FORMAT_JKS Ljava/lang/String;
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public static final field FORMAT_PEM Ljava/lang/String;
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public static final field FORMAT_PKCS12 Ljava/lang/String;
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public fun <init> (Lmisk/resources/ResourceLoader;)V
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public final fun getDelegate ()Lwisp/security/ssl/SslLoader;
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public final fun getResourceLoader ()Lmisk/resources/ResourceLoader;

‎misk-core/build.gradle.kts‎

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@@ -20,8 +20,10 @@ dependencies {
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api(project(":misk-config"))
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api(project(":misk-inject"))
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api(project(":misk-testing-api"))
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implementation(libs.bouncyCastleProvider)
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implementation(libs.guice)
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implementation(libs.kotlinStdLibJdk8)
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implementation(libs.okio)
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implementation(project(":wisp:wisp-token-testing"))
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implementation(project(":wisp:wisp-resource-loader"))
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‎misk-core/src/main/kotlin/misk/security/ssl/CertStoreConfig.kt‎

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@@ -1,14 +1,15 @@
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package misk.security.ssl
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import misk.config.Redact
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import wisp.security.ssl.CertStoreConfig as WispCertStoreConfig
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import jakarta.inject.Inject
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import wisp.security.ssl.CertStoreConfig as WispCertStoreConfig
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data class CertStoreConfig @Inject constructor(
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val resource: String,
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@Redact
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val passphrase: String? = null,
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val format: String = SslLoader.FORMAT_JCEKS
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) {
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@Deprecated("Duplicate implementations in Wisp are being migrated to the unified type in Misk.")
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fun toWispConfig() = WispCertStoreConfig(resource, passphrase, format)
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}

‎misk-core/src/main/kotlin/misk/security/ssl/KeyStoreX509KeyManager.kt‎

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@@ -0,0 +1,56 @@
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package misk.security.ssl
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import wisp.security.ssl.aliasesOfType
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import wisp.security.ssl.getPrivateKey
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import wisp.security.ssl.getX509CertificateChain
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import java.net.Socket
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import java.security.KeyStore
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import java.security.Principal
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import java.security.PrivateKey
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import java.security.cert.X509Certificate
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import javax.net.ssl.X509ExtendedKeyManager
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/**
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* An [X509ExtendedKeyManager] that loads certificates from a [KeyStore]. The [KeyStore]
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* should contain one and only one alias. The [KeyStore] can be lazily supplied, allowing
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* for periodically reloading from disk if needed
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*/
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internal class KeyStoreX509KeyManager(
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private val passphrase: CharArray,
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private val lazyKeyStore: () -> KeyStore
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) : X509ExtendedKeyManager() {
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constructor(passphrase: CharArray, keyStore: KeyStore) : this(passphrase, { keyStore })
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override fun chooseServerAlias(
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keyType: String?,
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issuers: Array<out Principal>?,
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socket: Socket?
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) = getPrivateKeyAlias()
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override fun chooseClientAlias(
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keyTypes: Array<out String>?,
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issuers: Array<out Principal>?,
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socket: Socket?
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) = getPrivateKeyAlias()
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override fun getClientAliases(keyType: String?, issuers: Array<out Principal>?): Array<String> {
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return arrayOf(getPrivateKeyAlias())
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}
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override fun getServerAliases(keyType: String?, issuers: Array<out Principal>?): Array<String> {
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return arrayOf(getPrivateKeyAlias())
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}
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override fun getCertificateChain(alias: String): Array<X509Certificate> {
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return lazyKeyStore().getX509CertificateChain(alias)
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}
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override fun getPrivateKey(alias: String): PrivateKey {
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return lazyKeyStore().getPrivateKey(alias, passphrase)
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}
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private fun getPrivateKeyAlias(): String {
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return lazyKeyStore().aliasesOfType<KeyStore.PrivateKeyEntry>().single()
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}
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}

‎misk-core/src/main/kotlin/misk/security/ssl/PemComboFile.kt‎

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package misk.security.ssl
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import okio.Buffer
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import okio.BufferedSource
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import okio.ByteString
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import okio.ByteString.Companion.decodeBase64
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import org.bouncycastle.asn1.ASN1Sequence
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import org.bouncycastle.asn1.pkcs.RSAPrivateKey
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import java.io.IOException
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import java.security.KeyStore
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import java.security.cert.Certificate
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import java.security.cert.CertificateFactory
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import java.security.spec.KeySpec
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import java.security.spec.RSAPrivateCrtKeySpec
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/**
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* A file containing a mix of PEM-encoded certificates and PEM-encoded private
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* keys. Can be used both for trust stores (which certificate authorities a TLS
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* client trusts) and also for TLS servers (which certificate chain a TLS server
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* serves).
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*/
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internal data class PemComboFile(
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val certificates: List<ByteString>,
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val privateRsaKeys: List<ByteString>,
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val privateKeys: List<ByteString>,
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val passphrase: String
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) {
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fun newEmptyKeyStore(): KeyStore {
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val password = passphrase.toCharArray() // Any password will work.
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val result = KeyStore.getInstance(KeyStore.getDefaultType())
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result.load(null, password) // By convention, null input creates a new empty store
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return result
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}
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fun decodeCertificates(): List<Certificate> {
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val certificateFactory = CertificateFactory.getInstance("X.509")
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return certificates.map {
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certificateFactory.generateCertificate(Buffer().write(it).inputStream())
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}
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}
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companion object {
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fun parse(certKeyComboSource: BufferedSource, passphrase: String? = null): PemComboFile {
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val certificates = mutableListOf<ByteString>()
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val privateRsaKeys = mutableListOf<ByteString>()
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val privateKeys = mutableListOf<ByteString>()
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val lines = certKeyComboSource.lines().iterator()
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while (lines.hasNext()) {
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val line = lines.next()
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when {
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line.matches(Regex("-+BEGIN CERTIFICATE-+")) -> {
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certificates += decodeBase64Until(
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lines,
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Regex("-+END CERTIFICATE-+")
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)
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}
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line.matches(Regex("-+BEGIN RSA PRIVATE KEY-+")) -> {
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privateRsaKeys += decodeBase64Until(
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lines,
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Regex("-+END RSA PRIVATE KEY-+")
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)
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}
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line.matches(Regex("-+BEGIN PRIVATE KEY-+")) -> {
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privateKeys += decodeBase64Until(
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lines,
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Regex("-+END PRIVATE KEY-+")
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)
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}
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// Ignore everything else
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}
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}
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return PemComboFile(
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certificates, privateRsaKeys, privateKeys,
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passphrase ?: "password"
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)
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}
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fun convertPKCS1toPKCS8(pkcs1Key: ByteString): KeySpec {
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val keyObject = ASN1Sequence.fromByteArray(pkcs1Key.toByteArray())
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val rsaPrivateKey = RSAPrivateKey.getInstance(keyObject)
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return RSAPrivateCrtKeySpec(
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rsaPrivateKey.modulus,
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rsaPrivateKey.publicExponent,
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rsaPrivateKey.privateExponent,
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rsaPrivateKey.prime1,
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rsaPrivateKey.prime2,
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rsaPrivateKey.exponent1,
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rsaPrivateKey.exponent2,
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rsaPrivateKey.coefficient
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)
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}
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private fun BufferedSource.lines(): List<String> {
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use {
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val result = mutableListOf<String>()
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while (true) {
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val line = readUtf8Line() ?: break
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result.add(line)
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}
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return result
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}
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}
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private fun decodeBase64Until(lines: Iterator<String>, until: Regex): ByteString {
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val result = Buffer()
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while (true) {
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if (!lines.hasNext()) throw IOException("$until not found")
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val line = lines.next()
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if (line.matches(until)) break
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if (line.isEmpty()) continue
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result.writeUtf8(line)
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}
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return result.readUtf8().decodeBase64() ?: throw IOException("malformed base64")
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}
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}
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}

‎misk-core/src/main/kotlin/misk/security/ssl/SslContextFactory.kt‎

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@@ -4,22 +4,41 @@ import java.security.KeyStore
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import jakarta.inject.Inject
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import javax.net.ssl.SSLContext
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import javax.net.ssl.TrustManager
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import javax.net.ssl.TrustManagerFactory
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import wisp.security.ssl.SslContextFactory as WispSslContextFactory
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class SslContextFactory @Inject constructor(private val sslLoader: SslLoader) {
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val delegate: WispSslContextFactory = WispSslContextFactory(sslLoader.delegate)
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@Deprecated("Duplicate implementations in Wisp are being migrated to the unified type in Misk.")
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val delegate: WispSslContextFactory by lazy { WispSslContextFactory(sslLoader.delegate) }
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/** @return A new [SSLContext] for the given certstore and optional truststore config */
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@JvmOverloads
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fun create(certStore: CertStoreConfig? = null, trustStore: TrustStoreConfig? = null): SSLContext =
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delegate.create(certStore?.toWispConfig(), trustStore?.toWispConfig())
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fun create(certStore: CertStoreConfig? = null, trustStore: TrustStoreConfig? = null): SSLContext {
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val loadedCertStore = certStore?.let { sslLoader.loadCertStore(certStore) }
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val loadedTrustStore = trustStore?.let { sslLoader.loadTrustStore(trustStore) }
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return create(loadedCertStore, certStore?.passphrase?.toCharArray(), loadedTrustStore)
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}
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/** @return A new [SSLContext] for the given certstore and optional truststore config */
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@JvmOverloads
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fun create(certStore: CertStore?, pin: CharArray?, trustStore: TrustStore? = null): SSLContext =
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delegate.create(certStore?.let { wisp.security.ssl.CertStore(it.keyStore) }, pin, trustStore?.let { wisp.security.ssl.TrustStore(it.keyStore) })
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fun create(certStore: CertStore?, pin: CharArray?, trustStore: TrustStore? = null): SSLContext {
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val sslContext = SSLContext.getInstance("TLS", "SunJSSE")
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val trustManagers = trustStore?.keyStore?.let {
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loadTrustManagers(it)
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} ?: arrayOf()
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val keyManagers = certStore?.keyStore?.let {
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arrayOf(KeyStoreX509KeyManager(pin!!, it))
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} ?: arrayOf()
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sslContext.init(keyManagers, trustManagers, null)
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return sslContext
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}
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/** @return a set of [TrustManager]s based on the certificates in the given truststore */
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fun loadTrustManagers(trustStore: KeyStore): Array<TrustManager> =
24-
delegate.loadTrustManagers(trustStore)
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fun loadTrustManagers(trustStore: KeyStore): Array<TrustManager> {
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val trustManagerFactory = TrustManagerFactory.getInstance(trustAlgorithm)
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trustManagerFactory.init(trustStore)
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return trustManagerFactory.trustManagers
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}
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private val trustAlgorithm = TrustManagerFactory.getDefaultAlgorithm()
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}

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