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providers/base: add accumulating sign/verify helper functions (single ByteArray accumulator; isClosed); update ABI baselines
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‎cryptography-providers/base/api/cryptography-provider-base.api‎

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@@ -77,6 +77,24 @@ public final class dev/whyoleg/cryptography/providers/base/operations/Accumulati
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public fun close ()V
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}
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public final class dev/whyoleg/cryptography/providers/base/operations/AccumulatingSignFunction : dev/whyoleg/cryptography/operations/SignFunction {
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public fun <init> (Lkotlin/jvm/functions/Function1;)V
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public fun close ()V
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public fun reset ()V
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public fun signIntoByteArray ([BI)I
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public fun signToByteArray ()[B
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public fun update ([BII)V
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}
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public final class dev/whyoleg/cryptography/providers/base/operations/AccumulatingVerifyFunction : dev/whyoleg/cryptography/operations/VerifyFunction {
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public fun <init> (Lkotlin/jvm/functions/Function4;)V
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public fun close ()V
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public fun reset ()V
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public fun tryVerify ([BII)Z
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public fun update ([BII)V
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public fun verify ([BII)V
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}
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public abstract interface class dev/whyoleg/cryptography/providers/base/operations/BaseAuthenticatedCipher : dev/whyoleg/cryptography/operations/AuthenticatedCipher, dev/whyoleg/cryptography/providers/base/operations/BaseAuthenticatedDecryptor, dev/whyoleg/cryptography/providers/base/operations/BaseAuthenticatedEncryptor, dev/whyoleg/cryptography/providers/base/operations/BaseCipher {
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}
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‎cryptography-providers/base/api/cryptography-provider-base.klib.api‎

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@@ -134,6 +134,26 @@ final class dev.whyoleg.cryptography.providers.base.operations/AccumulatingCiphe
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final fun close() // dev.whyoleg.cryptography.providers.base.operations/AccumulatingCipherFunction.close|close(){}[0]
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}
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final class dev.whyoleg.cryptography.providers.base.operations/AccumulatingSignFunction : dev.whyoleg.cryptography.operations/SignFunction { // dev.whyoleg.cryptography.providers.base.operations/AccumulatingSignFunction|null[0]
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constructor <init>(kotlin/Function1<kotlin/ByteArray, kotlin/ByteArray>) // dev.whyoleg.cryptography.providers.base.operations/AccumulatingSignFunction.<init>|<init>(kotlin.Function1<kotlin.ByteArray,kotlin.ByteArray>){}[0]
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final fun close() // dev.whyoleg.cryptography.providers.base.operations/AccumulatingSignFunction.close|close(){}[0]
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final fun reset() // dev.whyoleg.cryptography.providers.base.operations/AccumulatingSignFunction.reset|reset(){}[0]
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final fun signIntoByteArray(kotlin/ByteArray, kotlin/Int): kotlin/Int // dev.whyoleg.cryptography.providers.base.operations/AccumulatingSignFunction.signIntoByteArray|signIntoByteArray(kotlin.ByteArray;kotlin.Int){}[0]
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final fun signToByteArray(): kotlin/ByteArray // dev.whyoleg.cryptography.providers.base.operations/AccumulatingSignFunction.signToByteArray|signToByteArray(){}[0]
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final fun update(kotlin/ByteArray, kotlin/Int, kotlin/Int) // dev.whyoleg.cryptography.providers.base.operations/AccumulatingSignFunction.update|update(kotlin.ByteArray;kotlin.Int;kotlin.Int){}[0]
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}
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final class dev.whyoleg.cryptography.providers.base.operations/AccumulatingVerifyFunction : dev.whyoleg.cryptography.operations/VerifyFunction { // dev.whyoleg.cryptography.providers.base.operations/AccumulatingVerifyFunction|null[0]
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constructor <init>(kotlin/Function4<kotlin/ByteArray, kotlin/ByteArray, kotlin/Int, kotlin/Int, kotlin/Boolean>) // dev.whyoleg.cryptography.providers.base.operations/AccumulatingVerifyFunction.<init>|<init>(kotlin.Function4<kotlin.ByteArray,kotlin.ByteArray,kotlin.Int,kotlin.Int,kotlin.Boolean>){}[0]
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final fun close() // dev.whyoleg.cryptography.providers.base.operations/AccumulatingVerifyFunction.close|close(){}[0]
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final fun reset() // dev.whyoleg.cryptography.providers.base.operations/AccumulatingVerifyFunction.reset|reset(){}[0]
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final fun tryVerify(kotlin/ByteArray, kotlin/Int, kotlin/Int): kotlin/Boolean // dev.whyoleg.cryptography.providers.base.operations/AccumulatingVerifyFunction.tryVerify|tryVerify(kotlin.ByteArray;kotlin.Int;kotlin.Int){}[0]
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final fun update(kotlin/ByteArray, kotlin/Int, kotlin/Int) // dev.whyoleg.cryptography.providers.base.operations/AccumulatingVerifyFunction.update|update(kotlin.ByteArray;kotlin.Int;kotlin.Int){}[0]
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final fun verify(kotlin/ByteArray, kotlin/Int, kotlin/Int) // dev.whyoleg.cryptography.providers.base.operations/AccumulatingVerifyFunction.verify|verify(kotlin.ByteArray;kotlin.Int;kotlin.Int){}[0]
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}
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final val dev.whyoleg.cryptography.providers.base/EmptyByteArray // dev.whyoleg.cryptography.providers.base/EmptyByteArray|{}EmptyByteArray[0]
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final fun <get-EmptyByteArray>(): kotlin/ByteArray // dev.whyoleg.cryptography.providers.base/EmptyByteArray.<get-EmptyByteArray>|<get-EmptyByteArray>(){}[0]
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‎cryptography-providers/base/src/commonMain/kotlin/operations/AccumulatingSignatureFunctions.kt‎

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/*
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* Copyright (c) 2025 Oleg Yukhnevich. Use of this source code is governed by the Apache 2.0 license.
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*/
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package dev.whyoleg.cryptography.providers.base.operations
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import dev.whyoleg.cryptography.*
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import dev.whyoleg.cryptography.operations.*
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import dev.whyoleg.cryptography.providers.base.*
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@CryptographyProviderApi
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public class AccumulatingSignFunction(
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private val oneShot: (data: ByteArray) -> ByteArray,
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) : SignFunction {
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private var isClosed = false
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private var accumulator = EmptyByteArray
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private fun ensureNotClosed() { check(!isClosed) { "Already closed" } }
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private fun accumulate(source: ByteArray, startIndex: Int, endIndex: Int) {
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ensureNotClosed()
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checkBounds(source.size, startIndex, endIndex)
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accumulator += source.copyOfRange(startIndex, endIndex)
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}
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override fun update(source: ByteArray, startIndex: Int, endIndex: Int) {
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accumulate(source, startIndex, endIndex)
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}
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override fun signIntoByteArray(destination: ByteArray, destinationOffset: Int): Int {
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val sig = signToByteArray()
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sig.copyInto(destination, destinationOffset)
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return sig.size
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}
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override fun signToByteArray(): ByteArray {
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ensureNotClosed()
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val out = oneShot(accumulator)
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reset()
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return out
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}
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override fun reset() {
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ensureNotClosed()
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accumulator = EmptyByteArray
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}
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override fun close() {
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isClosed = true
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accumulator = EmptyByteArray
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}
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}
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@CryptographyProviderApi
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public class AccumulatingVerifyFunction(
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private val oneShot: (data: ByteArray, signature: ByteArray, startIndex: Int, endIndex: Int) -> Boolean,
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) : VerifyFunction {
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private var isClosed = false
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private var accumulator = EmptyByteArray
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private fun ensureNotClosed() { check(!isClosed) { "Already closed" } }
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private fun accumulate(source: ByteArray, startIndex: Int, endIndex: Int) {
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ensureNotClosed()
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checkBounds(source.size, startIndex, endIndex)
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accumulator += source.copyOfRange(startIndex, endIndex)
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}
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override fun update(source: ByteArray, startIndex: Int, endIndex: Int) {
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accumulate(source, startIndex, endIndex)
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}
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override fun tryVerify(signature: ByteArray, startIndex: Int, endIndex: Int): Boolean {
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ensureNotClosed()
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checkBounds(signature.size, startIndex, endIndex)
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val ok = oneShot(accumulator, signature, startIndex, endIndex)
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reset()
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return ok
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}
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override fun verify(signature: ByteArray, startIndex: Int, endIndex: Int) {
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check(tryVerify(signature, startIndex, endIndex)) { "Invalid signature" }
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}
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override fun reset() {
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ensureNotClosed()
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accumulator = EmptyByteArray
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}
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override fun close() {
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isClosed = true
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accumulator = EmptyByteArray
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}
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}

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