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Kotlin conversion: SignatureSubpacket

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This commit is contained in:
Paul Schaub 2023-08-04 17:05:54 +02:00
parent 2f1a5c7c1a
commit 15597ed833
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
1 changed files with 101 additions and 162 deletions
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263
pgpainless-core/src/main/java/org/pgpainless/algorithm/SignatureSubpacket.java → pgpainless-core/src/main/java/org/pgpainless/algorithm/SignatureSubpacket.kt
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@ -1,77 +1,40 @@
// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org> // SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
// //
// SPDX-License-Identifier: Apache-2.0 // SPDX-License-Identifier: Apache-2.0
package org.pgpainless.algorithm; package org.pgpainless.algorithm
import javax.annotation.Nonnull; import org.bouncycastle.bcpg.SignatureSubpacketTags.*
import javax.annotation.Nullable;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.ATTESTED_CERTIFICATIONS;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.CREATION_TIME;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.EMBEDDED_SIGNATURE;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.EXPIRE_TIME;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.EXPORTABLE;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.FEATURES;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.INTENDED_RECIPIENT_FINGERPRINT;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.ISSUER_FINGERPRINT;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.ISSUER_KEY_ID;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.KEY_EXPIRE_TIME;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.KEY_FLAGS;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.KEY_SERVER_PREFS;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.NOTATION_DATA;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.PLACEHOLDER;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.POLICY_URL;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.PREFERRED_AEAD_ALGORITHMS;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.PREFERRED_COMP_ALGS;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.PREFERRED_HASH_ALGS;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.PREFERRED_KEY_SERV;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.PREFERRED_SYM_ALGS;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.PRIMARY_USER_ID;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.REG_EXP;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.REVOCABLE;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.REVOCATION_KEY;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.REVOCATION_REASON;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.SIGNATURE_TARGET;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.SIGNER_USER_ID;
import static org.bouncycastle.bcpg.SignatureSubpacketTags.TRUST_SIG;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.concurrent.ConcurrentHashMap;
/** /**
* Enumeration of possible subpackets that might be found in the hashed and unhashed area of an OpenPGP signature. * Enumeration of possible subpackets that might be found in the hashed and unhashed area of an OpenPGP signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.1">RFC4880: Signature Subpacket Specification</a> * See [RFC4880: Signature Subpacket Specification](https://tools.ietf.org/html/rfc4880#section-5.2.3.1)
*/ */
public enum SignatureSubpacket { enum class SignatureSubpacket(val code: Int) {
/** /**
* The time the signature was made. * The time the signature was made.
* MUST be present in the hashed area of the signature. * MUST be present in the hashed area of the signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.4">Signature Creation Time</a> * See [Signature Creation Time](https://tools.ietf.org/html/rfc4880#section-5.2.3.4)
*/ */
signatureCreationTime(CREATION_TIME), signatureCreationTime(2),
/** /**
* The validity period of the signature. This is the number of seconds * The validity period of the signature. This is the number of seconds
* after the signature creation time that the signature expires. If * after the signature creation time that the signature expires. If
* this is not present or has a value of zero, it never expires. * this is not present or has a value of zero, it never expires.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.10">Signature Expiration Time</a> * See [Signature Expiration Time](https://tools.ietf.org/html/rfc4880#section-5.2.3.10)
*/ */
signatureExpirationTime(EXPIRE_TIME), signatureExpirationTime(3),
/** /**
* Denotes whether the signature is exportable for other users. * Denotes whether the signature is exportable for other users.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.11">Exportable Certification</a> * See [Exportable Certification](https://tools.ietf.org/html/rfc4880#section-5.2.3.11)
*/ */
exportableCertification(EXPORTABLE), exportableCertification(4),
/** /**
* Signer asserts that the key is not only valid but also trustworthy at * Signer asserts that the key is not only valid but also trustworthy at
@ -87,9 +50,9 @@ public enum SignatureSubpacket {
* greater indicate complete trust. Implementations SHOULD emit values * greater indicate complete trust. Implementations SHOULD emit values
* of 60 for partial trust and 120 for complete trust. * of 60 for partial trust and 120 for complete trust.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.13">Trust Signature</a> * See [Trust Signature](https://tools.ietf.org/html/rfc4880#section-5.2.3.13)
*/ */
trustSignature(TRUST_SIG), trustSignature(5),
/** /**
* Used in conjunction with trust Signature packets (of level greater 0) to * Used in conjunction with trust Signature packets (of level greater 0) to
@ -100,9 +63,9 @@ public enum SignatureSubpacket {
* "almost public domain" regular expression [REGEX] package. A * "almost public domain" regular expression [REGEX] package. A
* description of the syntax is found in Section 8 below. * description of the syntax is found in Section 8 below.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.14">Regular Expression</a> * See [Regular Expression](https://tools.ietf.org/html/rfc4880#section-5.2.3.14)
*/ */
regularExpression(REG_EXP), regularExpression(6),
/** /**
* Signature's revocability status. The packet body contains a Boolean * Signature's revocability status. The packet body contains a Boolean
@ -112,9 +75,9 @@ public enum SignatureSubpacket {
* signature for the life of his key. If this packet is not present, * signature for the life of his key. If this packet is not present,
* the signature is revocable. * the signature is revocable.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.12">Revocable</a> * See [Revocable](https://tools.ietf.org/html/rfc4880#section-5.2.3.12)
*/ */
revocable(REVOCABLE), revocable(7),
/** /**
* The validity period of the key. This is the number of seconds after * The validity period of the key. This is the number of seconds after
@ -122,14 +85,14 @@ public enum SignatureSubpacket {
* or has a value of zero, the key never expires. This is found only on * or has a value of zero, the key never expires. This is found only on
* a self-signature. * a self-signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.6">Key Expiration Time</a> * See [Key Expiration Time](https://tools.ietf.org/html/rfc4880#section-5.2.3.6)
*/ */
keyExpirationTime(KEY_EXPIRE_TIME), keyExpirationTime(9),
/** /**
* Placeholder for backwards compatibility. * Placeholder for backwards compatibility.
*/ */
placeholder(PLACEHOLDER), placeholder(10),
/** /**
* Symmetric algorithm numbers that indicate which algorithms the keyholder * Symmetric algorithm numbers that indicate which algorithms the keyholder
@ -138,9 +101,9 @@ public enum SignatureSubpacket {
* algorithms listed are supported by the recipient's software. * algorithms listed are supported by the recipient's software.
* This is only found on a self-signature. * This is only found on a self-signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.7">Preferred Symmetric Algorithms</a> * See [Preferred Symmetric Algorithms](https://tools.ietf.org/html/rfc4880#section-5.2.3.7)
*/ */
preferredSymmetricAlgorithms(PREFERRED_SYM_ALGS), preferredSymmetricAlgorithms(11),
/** /**
* Authorizes the specified key to issue revocation signatures for this * Authorizes the specified key to issue revocation signatures for this
@ -159,16 +122,16 @@ public enum SignatureSubpacket {
* isolate this subpacket within a separate signature so that it is not * isolate this subpacket within a separate signature so that it is not
* combined with other subpackets that need to be exported. * combined with other subpackets that need to be exported.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.15">Revocation Key</a> * See [Revocation Key](https://tools.ietf.org/html/rfc4880#section-5.2.3.15)
*/ */
revocationKey(REVOCATION_KEY), revocationKey(12),
/** /**
* The OpenPGP Key ID of the key issuing the signature. * The OpenPGP Key ID of the key issuing the signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.5">Issuer Key ID</a> * See [Issuer Key ID](https://tools.ietf.org/html/rfc4880#section-5.2.3.5)
*/ */
issuerKeyId(ISSUER_KEY_ID), issuerKeyId(16),
/** /**
* This subpacket describes a "notation" on the signature that the * This subpacket describes a "notation" on the signature that the
@ -178,9 +141,9 @@ public enum SignatureSubpacket {
* the signature cares to make. The "flags" field holds four octets of * the signature cares to make. The "flags" field holds four octets of
* flags. * flags.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.16">Notation Data</a> * See [Notation Data](https://tools.ietf.org/html/rfc4880#section-5.2.3.16)
*/ */
notationData(NOTATION_DATA), notationData(20),
/** /**
* Message digest algorithm numbers that indicate which algorithms the * Message digest algorithm numbers that indicate which algorithms the
@ -188,9 +151,9 @@ public enum SignatureSubpacket {
* algorithms, the list is ordered. * algorithms, the list is ordered.
* This is only found on a self-signature. * This is only found on a self-signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.8">Preferred Hash Algorithms</a> * See [Preferred Hash Algorithms](https://tools.ietf.org/html/rfc4880#section-5.2.3.8)
*/ */
preferredHashAlgorithms(PREFERRED_HASH_ALGS), preferredHashAlgorithms(21),
/** /**
* Compression algorithm numbers that indicate which algorithms the * Compression algorithm numbers that indicate which algorithms the
@ -200,9 +163,9 @@ public enum SignatureSubpacket {
* software might have no compression software in that implementation. * software might have no compression software in that implementation.
* This is only found on a self-signature. * This is only found on a self-signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.9">Preferred Compressio Algorithms</a> * See [Preferred Compressio Algorithms](https://tools.ietf.org/html/rfc4880#section-5.2.3.9)
*/ */
preferredCompressionAlgorithms(PREFERRED_COMP_ALGS), preferredCompressionAlgorithms(22),
/** /**
* This is a list of one-bit flags that indicate preferences that the * This is a list of one-bit flags that indicate preferences that the
@ -210,9 +173,9 @@ public enum SignatureSubpacket {
* undefined flags MUST be zero. * undefined flags MUST be zero.
* This is found only on a self-signature. * This is found only on a self-signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.17">Key Server Preferences</a> * See [Key Server Preferences](https://tools.ietf.org/html/rfc4880#section-5.2.3.17)
*/ */
keyServerPreferences(KEY_SERVER_PREFS), keyServerPreferences(23),
/** /**
* This is a URI of a key server that the keyholder prefers be used for * This is a URI of a key server that the keyholder prefers be used for
@ -221,9 +184,9 @@ public enum SignatureSubpacket {
* key server can actually be a copy of the key retrieved by ftp, http, * key server can actually be a copy of the key retrieved by ftp, http,
* finger, etc. * finger, etc.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.18">Preferred Key Server</a> * See [Preferred Key Server](https://tools.ietf.org/html/rfc4880#section-5.2.3.18)
*/ */
preferredKeyServers(PREFERRED_KEY_SERV), preferredKeyServers(24),
/** /**
* This is a flag in a User ID's self-signature that states whether this * This is a flag in a User ID's self-signature that states whether this
@ -242,17 +205,17 @@ public enum SignatureSubpacket {
* different and independent "primaries" -- one for User IDs, and one * different and independent "primaries" -- one for User IDs, and one
* for User Attributes. * for User Attributes.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.19">Primary User-ID</a> * See [Primary User-ID](https://tools.ietf.org/html/rfc4880#section-5.2.3.19)
*/ */
primaryUserId(PRIMARY_USER_ID), primaryUserId(25),
/** /**
* This subpacket contains a URI of a document that describes the policy * This subpacket contains a URI of a document that describes the policy
* under which the signature was issued. * under which the signature was issued.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.20">Policy URL</a> * See [Policy URL](https://tools.ietf.org/html/rfc4880#section-5.2.3.20)
*/ */
policyUrl(POLICY_URL), policyUrl(26),
/** /**
* This subpacket contains a list of binary flags that hold information * This subpacket contains a list of binary flags that hold information
@ -261,9 +224,9 @@ public enum SignatureSubpacket {
* list is shorter than an implementation expects, the unstated flags * list is shorter than an implementation expects, the unstated flags
* are considered to be zero. * are considered to be zero.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.21">Key Flags</a> * See [Key Flags](https://tools.ietf.org/html/rfc4880#section-5.2.3.21)
*/ */
keyFlags(KEY_FLAGS), keyFlags(27),
/** /**
* This subpacket allows a keyholder to state which User ID is * This subpacket allows a keyholder to state which User ID is
@ -272,9 +235,9 @@ public enum SignatureSubpacket {
* personal communications. This subpacket allows such a keyholder to * personal communications. This subpacket allows such a keyholder to
* state which of their roles is making a signature. * state which of their roles is making a signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.22">Signer's User ID</a> * See [Signer's User ID](https://tools.ietf.org/html/rfc4880#section-5.2.3.22)
*/ */
signerUserId(SIGNER_USER_ID), signerUserId(28),
/** /**
* This subpacket is used only in key revocation and certification * This subpacket is used only in key revocation and certification
@ -291,9 +254,9 @@ public enum SignatureSubpacket {
* 32 - User ID information is no longer valid (cert revocations) * 32 - User ID information is no longer valid (cert revocations)
* 100-110 - Private Use * 100-110 - Private Use
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.23">Reason for Revocation</a> * See [Reason for Revocation](https://tools.ietf.org/html/rfc4880#section-5.2.3.23)
*/ */
revocationReason(REVOCATION_REASON), revocationReason(29),
/** /**
* The Features subpacket denotes which advanced OpenPGP features a * The Features subpacket denotes which advanced OpenPGP features a
@ -305,9 +268,9 @@ public enum SignatureSubpacket {
* This subpacket is similar to a preferences subpacket, and only * This subpacket is similar to a preferences subpacket, and only
* appears in a self-signature. * appears in a self-signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.24">Features</a> * See [Features](https://tools.ietf.org/html/rfc4880#section-5.2.3.24)
*/ */
features(FEATURES), features(30),
/** /**
* This subpacket identifies a specific target signature to which a * This subpacket identifies a specific target signature to which a
@ -321,18 +284,18 @@ public enum SignatureSubpacket {
* signature. For example, a target signature with a SHA-1 hash MUST * signature. For example, a target signature with a SHA-1 hash MUST
* have 20 octets of hash data. * have 20 octets of hash data.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.25">Signature Target</a> * See [Signature Target](https://tools.ietf.org/html/rfc4880#section-5.2.3.25)
*/ */
signatureTarget(SIGNATURE_TARGET), signatureTarget(31),
/** /**
* This subpacket contains a complete Signature packet body as * This subpacket contains a complete Signature packet body as
* specified in Section 5.2 above. It is useful when one signature * specified in Section 5.2 above. It is useful when one signature
* needs to refer to, or be incorporated in, another signature. * needs to refer to, or be incorporated in, another signature.
* *
* @see <a href="https://tools.ietf.org/html/rfc4880#section-5.2.3.26">Embedded Signature</a> * See [Embedded Signature](https://tools.ietf.org/html/rfc4880#section-5.2.3.26)
*/ */
embeddedSignature(EMBEDDED_SIGNATURE), embeddedSignature(32),
/** /**
* The OpenPGP Key fingerprint of the key issuing the signature. This * The OpenPGP Key fingerprint of the key issuing the signature. This
@ -344,9 +307,9 @@ public enum SignatureSubpacket {
* Note that the length N of the fingerprint for a version 4 key is 20 * Note that the length N of the fingerprint for a version 4 key is 20
* octets; for a version 5 key N is 32. * octets; for a version 5 key N is 32.
* *
* @see <a href="https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis-10#section-5.2.3.28">Issuer Fingerprint</a> * See [Issuer Fingerprint](https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis-10#section-5.2.3.28)
*/ */
issuerFingerprint(ISSUER_FINGERPRINT), issuerFingerprint(33),
/** /**
* AEAD algorithm numbers that indicate which AEAD algorithms the * AEAD algorithm numbers that indicate which AEAD algorithms the
@ -357,9 +320,9 @@ public enum SignatureSubpacket {
* Note that support for the AEAD Encrypted Data packet in the general * Note that support for the AEAD Encrypted Data packet in the general
* is indicated by a Feature Flag. * is indicated by a Feature Flag.
* *
* @see <a href="https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis-10#section-5.2.3.8">Preferred AEAD Algorithms</a> * See [Preferred AEAD Algorithms](https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis-10#section-5.2.3.8)
*/ */
preferredAEADAlgorithms(PREFERRED_AEAD_ALGORITHMS), preferredAEADAlgorithms(39),
/** /**
* The OpenPGP Key fingerprint of the intended recipient primary key. * The OpenPGP Key fingerprint of the intended recipient primary key.
@ -372,9 +335,9 @@ public enum SignatureSubpacket {
* Note that the length N of the fingerprint for a version 4 key is 20 * Note that the length N of the fingerprint for a version 4 key is 20
* octets; for a version 5 key N is 32. * octets; for a version 5 key N is 32.
* *
* @see <a href="https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis-10#section-5.2.3.29">Intended Recipient Fingerprint</a> * See [Intended Recipient Fingerprint](https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis-10#section-5.2.3.29)
*/ */
intendedRecipientFingerprint(INTENDED_RECIPIENT_FINGERPRINT), intendedRecipientFingerprint(35),
/** /**
* This subpacket MUST only appear as a hashed subpacket of an * This subpacket MUST only appear as a hashed subpacket of an
@ -388,75 +351,51 @@ public enum SignatureSubpacket {
* Attested Certification subpacket in any generated Attestation Key * Attested Certification subpacket in any generated Attestation Key
* Signature. * Signature.
* *
* @see <a href="https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis-10#section-5.2.3.30">Attested Certification</a> * See [Attested Certification](https://tools.ietf.org/html/draft-ietf-openpgp-rfc4880bis-10#section-5.2.3.30)
*/ */
attestedCertification(ATTESTED_CERTIFICATIONS) attestedCertification(37)
; ;
private static final Map<Integer, SignatureSubpacket> MAP = new ConcurrentHashMap<>(); companion object {
static {
for (SignatureSubpacket p : values()) { /**
MAP.put(p.code, p); * Return the [SignatureSubpacket] that corresponds to the provided id.
} * If an unmatched code is presented, return null.
} *
* @param code id
private final int code; * @return signature subpacket
*/
SignatureSubpacket(int code) { @JvmStatic
this.code = code; fun fromCode(code: Int): SignatureSubpacket? {
} return values().firstOrNull {
it.code == code
/** }
* Return the numerical identifier of the {@link SignatureSubpacket}. }
* @return id
*/ /**
public int getCode() { * Return the [SignatureSubpacket] that corresponds to the provided code.
return code; *
} * @param code code
* @return signature subpacket
/** * @throws NoSuchElementException in case of an unmatched subpacket tag
* Return the {@link SignatureSubpacket} that corresponds to the provided id. */
* If an unmatched code is presented, return null. @JvmStatic
* fun requireFromCode(code: Int): SignatureSubpacket {
* @param code id return fromCode(code) ?:
* @return signature subpacket throw NoSuchElementException("No SignatureSubpacket tag found with code $code")
*/ }
@Nullable
public static SignatureSubpacket fromCode(int code) { /**
return MAP.get(code); * Convert an array of signature subpacket tags into a list of [SignatureSubpacket SignatureSubpackets].
} *
* @param codes array of codes
/** * @return list of subpackets
* Return the {@link SignatureSubpacket} that corresponds to the provided code. */
* @JvmStatic
* @param code code fun fromCodes(vararg codes: Int): List<SignatureSubpacket> {
* @return signature subpacket return codes.toList().mapNotNull {
* @throws NoSuchElementException in case of an unmatched subpacket tag fromCode(it)
*/
@Nonnull
public static SignatureSubpacket requireFromCode(int code) {
SignatureSubpacket tag = fromCode(code);
if (tag == null) {
throw new NoSuchElementException("No SignatureSubpacket tag found with code " + code);
}
return tag;
}
/**
* Convert an array of signature subpacket tags into a list of {@link SignatureSubpacket SignatureSubpackets}.
*
* @param codes array of codes
* @return list of subpackets
*/
public static List<SignatureSubpacket> fromCodes(int[] codes) {
List<SignatureSubpacket> tags = new ArrayList<>();
for (int code : codes) {
try {
tags.add(requireFromCode(code));
} catch (NoSuchElementException e) {
// skip
} }
} }
return tags;
} }
} }