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Code Issues Releases Wiki Activity

Kotlin conversion: CertificateAuthenticity

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This commit is contained in:
Paul Schaub 2023-08-06 14:31:50 +02:00
parent b91e19fc39
commit 075ca4baa3
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
2 changed files with 57 additions and 139 deletions
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139
pgpainless-core/src/main/java/org/pgpainless/authentication/CertificateAuthenticity.java
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// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.authentication;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Nonnull;
import org.bouncycastle.openpgp.PGPPublicKeyRing;
public class CertificateAuthenticity {
private final String userId;
private final PGPPublicKeyRing certificate;
private final Map<CertificationChain, Integer> certificationChains = new HashMap<>();
private final int targetAmount;
public CertificateAuthenticity(@Nonnull PGPPublicKeyRing certificate,
@Nonnull String userId,
@Nonnull Map<CertificationChain, Integer> certificationChains,
int targetAmount) {
this.userId = userId;
this.certificate = certificate;
this.certificationChains.putAll(certificationChains);
this.targetAmount = targetAmount;
}
@Nonnull
public String getUserId() {
return userId;
}
@Nonnull
public PGPPublicKeyRing getCertificate() {
return certificate;
}
public int getTotalTrustAmount() {
int total = 0;
for (int v : certificationChains.values()) {
total += v;
}
return total;
}
/**
* Return the degree of authentication of the binding in percent.
* 100% means full authentication.
* Values smaller than 100% mean partial authentication.
*
* @return authenticity in percent
*/
public int getAuthenticityPercentage() {
return targetAmount * 100 / getTotalTrustAmount();
}
/**
* Return true, if the binding is authenticated to a sufficient degree.
*
* @return true if total gathered evidence outweighs the target trust amount.
*/
public boolean isAuthenticated() {
return targetAmount <= getTotalTrustAmount();
}
/**
* Return a map of {@link CertificationChain CertificationChains} and their respective effective trust amount.
* The effective trust amount of a path might be smaller than its actual trust amount, for example if nodes of a
* path are used multiple times.
*
* @return map of certification chains and their effective trust amounts
*/
@Nonnull
public Map<CertificationChain, Integer> getCertificationChains() {
return Collections.unmodifiableMap(certificationChains);
}
public static class CertificationChain {
private final int trustAmount;
private final List<ChainLink> chainLinks = new ArrayList<>();
/**
* A chain of certifications.
*
* @param trustAmount actual trust amount of the chain
* @param chainLinks links of the chain, starting at the trust-root, ending at the target.
*/
public CertificationChain(int trustAmount, @Nonnull List<ChainLink> chainLinks) {
this.trustAmount = trustAmount;
this.chainLinks.addAll(chainLinks);
}
/**
* Actual trust amount of the certification chain.
* @return trust amount
*/
public int getTrustAmount() {
return trustAmount;
}
/**
* Return all links in the chain, starting at the trust-root and ending at the target.
* @return chain links
*/
@Nonnull
public List<ChainLink> getChainLinks() {
return Collections.unmodifiableList(chainLinks);
}
}
/**
* A chain link contains a node in the trust chain.
*/
public static class ChainLink {
private final PGPPublicKeyRing certificate;
/**
* Create a chain link.
* @param certificate node in the trust chain
*/
public ChainLink(@Nonnull PGPPublicKeyRing certificate) {
this.certificate = certificate;
}
/**
* Return the certificate that belongs to the node.
* @return certificate
*/
@Nonnull
public PGPPublicKeyRing getCertificate() {
return certificate;
}
}
}

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pgpainless-core/src/main/java/org/pgpainless/authentication/CertificateAuthenticity.kt Normal file
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// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.authentication
import org.bouncycastle.openpgp.PGPPublicKeyRing
class CertificateAuthenticity(val userId: String,
val certificate: PGPPublicKeyRing,
val certificationChains: Map<CertificationChain, Int>,
val targetAmount: Int) {
val totalTrustAmount: Int
get() = certificationChains.values.sum()
/**
* Return the degree of authentication of the binding in percent.
* 100% means full authentication.
* Values smaller than 100% mean partial authentication.
*
* @return authenticity in percent
*/
val authenticityPercentage: Int
get() = targetAmount * 100 / totalTrustAmount
/**
* Return true, if the binding is authenticated to a sufficient degree.
*
* @return true if total gathered evidence outweighs the target trust amount.
*/
val authenticated: Boolean
get() = targetAmount <= totalTrustAmount
fun isAuthenticated() = authenticated
}
/**
* A chain of certifications.
*
* @param trustAmount actual trust amount of the chain
* @param chainLinks links of the chain, starting at the trust-root, ending at the target.
*/
class CertificationChain(
val trustAmount: Int,
val chainLinks: List<ChainLink>) {
}
/**
* A chain link contains a node in the trust chain.
*/
class ChainLink(
val certificate: PGPPublicKeyRing) {
}