remove iOS legacy attestation

docs/docs/indispensable.md

@@ -68,8 +68,6 @@ It contains essentials such as:
     * `X509SignatureAlgorithm` enumeration of supported X.509 signature algorithms (maps to and from `SignatureAlgorithm`)
 * `Attestation` representing a container to convey attestation statements 
     * `AndroidKeystoreAttestation` contains the certificate chain from Google's root certificate down to the attested key
-    * `IosLegacyHomebrewAttesation` contains an attestation and an assertion, conforming to the emulated key attestation scheme
-currently supported by warden.
     * `IosHomebrewAttestation` contains the new iOS attestation format introduces in Supreme 0.2.0 (see the [Attestation](supreme.md#attestation) section of the _Supreme_ manual for details).
     * `SelfAttestation` is used on the JVM. It has no specific semantics, but could be used, if an attestation-supporting HSM is used on the JVM. WIP!
 

docs/docs/supreme.md

@@ -281,12 +281,6 @@ The Supreme KMP crypto provider introduces a `digest()` extension function on th
 For a list of supported algorithms, check out the [feature matrix](features.md#supported-algorithms).
 
 ## Attestation
-!!! info
-    All attestation types are serializable for transfer and are part of the _Indispensable_ module, so they are usable
-    on JVM-only back-ends, that may not wish to include the _Supreme_ KM crypto provider.
-    [_WARDEN_](https://github.com/a-sit-plus/warden) does not yet directly support this format, but will in the next release.
-    As of now, the encoded certificate chain of the `AndroidKeytoreAttestation` and an array containing `attestation`
-    followed by `assertion` from the `IosLegacyHomebrewAttestation` are supported WARDEN.
 
 The Android KeyStore offers key attestation certificates for hardware-backed keys.
 These certificates are exposed by the signer's `.attestation` property.

indispensable/src/commonMain/kotlin/at/asitplus/signum/indispensable/Attestation.kt

@@ -34,32 +34,6 @@ data class AndroidKeystoreAttestation (
     @SerialName("x5c")
     val certificateChain: CertificateChain) : Attestation
 
-@Serializable
-@SerialName("ios-appattest-assertion")
-data class IosLegacyHomebrewAttestation(
-    @Serializable(with=ByteArrayBase64UrlSerializer::class)
-    val attestation: ByteArray,
-    @Serializable(with=ByteArrayBase64UrlSerializer::class)
-    val clientData: ByteArray,
-    @Serializable(with=ByteArrayBase64UrlSerializer::class)
-    val assertion: ByteArray): Attestation {
-    override fun equals(other: Any?): Boolean {
-        if (this === other) return true
-        if (other !is IosLegacyHomebrewAttestation) return false
-
-        if (!clientData.contentEquals(other.clientData)) return false
-        if (!attestation.contentEquals(other.attestation)) return false
-        return assertion.contentEquals(other.assertion)
-    }
-
-    override fun hashCode(): Int {
-        var result = attestation.contentHashCode()
-        result = 31 * result + assertion.contentHashCode()
-        result = 31 * result + clientData.contentHashCode()
-        return result
-    }
-}
-
 val StrictJson = Json { ignoreUnknownKeys = true; isLenient = false }
 
 @Serializable