mirror of
https://github.com/moparisthebest/open-keychain
synced 2024-11-11 11:35:07 -05:00
certify: add some subscopes in PgpKeyOperation for readability
note this commit introduces NO semantical changes whatsoever!
This commit is contained in:
Vincent Breitmoser
parent
1de0312bb5
commit
a3224687f6
@ -215,106 +215,118 @@ public class PgpKeyOperation {
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updateProgress(R.string.progress_preparing_master_key, 10, 100);
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int usageId = keysUsages.get(0);
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boolean canSign =
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(usageId == Id.choice.usage.sign_only || usageId == Id.choice.usage.sign_and_encrypt);
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boolean canEncrypt =
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(usageId == Id.choice.usage.encrypt_only || usageId == Id.choice.usage.sign_and_encrypt);
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// prepare keyring generator with given master public and secret key
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PGPKeyRingGenerator keyGen;
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PGPPublicKey masterPublicKey; {
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String mainUserId = userIds.get(0);
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String mainUserId = userIds.get(0);
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PGPSecretKey masterKey = keys.get(0);
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// prepare the master key pair
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PGPKeyPair masterKeyPair; {
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// this removes all userIds and certifications previously attached to the masterPublicKey
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PGPPublicKey tmpKey = masterKey.getPublicKey();
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PGPPublicKey masterPublicKey = new PGPPublicKey(tmpKey.getAlgorithm(),
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tmpKey.getKey(new BouncyCastleProvider()), tmpKey.getCreationTime());
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PGPSecretKey masterKey = keys.get(0);
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// already done by code above:
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// PGPPublicKey masterPublicKey = masterKey.getPublicKey();
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// // Somehow, the PGPPublicKey already has an empty certification attached to it when the
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// // keyRing is generated the first time, we remove that when it exists, before adding the
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// new
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// // ones
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// PGPPublicKey masterPublicKeyRmCert = PGPPublicKey.removeCertification(masterPublicKey,
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// "");
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// if (masterPublicKeyRmCert != null) {
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// masterPublicKey = masterPublicKeyRmCert;
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// }
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// this removes all userIds and certifications previously attached to the masterPublicKey
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PGPPublicKey tmpKey = masterKey.getPublicKey();
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masterPublicKey = new PGPPublicKey(tmpKey.getAlgorithm(),
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tmpKey.getKey(new BouncyCastleProvider()), tmpKey.getCreationTime());
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PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider(
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Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(oldPassPhrase.toCharArray());
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PGPPrivateKey masterPrivateKey = masterKey.extractPrivateKey(keyDecryptor);
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// already done by code above:
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// PGPPublicKey masterPublicKey = masterKey.getPublicKey();
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// // Somehow, the PGPPublicKey already has an empty certification attached to it when the
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// // keyRing is generated the first time, we remove that when it exists, before adding the
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// new
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// // ones
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// PGPPublicKey masterPublicKeyRmCert = PGPPublicKey.removeCertification(masterPublicKey,
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// "");
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// if (masterPublicKeyRmCert != null) {
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// masterPublicKey = masterPublicKeyRmCert;
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// }
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updateProgress(R.string.progress_certifying_master_key, 20, 100);
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PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider(
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Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(oldPassPhrase.toCharArray());
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PGPPrivateKey masterPrivateKey = masterKey.extractPrivateKey(keyDecryptor);
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// TODO: if we are editing a key, keep old certs, don't remake certs we don't have to.
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updateProgress(R.string.progress_certifying_master_key, 20, 100);
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for (String userId : userIds) {
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PGPContentSignerBuilder signerBuilder = new JcaPGPContentSignerBuilder(
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masterPublicKey.getAlgorithm(), HashAlgorithmTags.SHA1)
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
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PGPSignatureGenerator sGen = new PGPSignatureGenerator(signerBuilder);
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// TODO: if we are editing a key, keep old certs, don't remake certs we don't have to.
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sGen.init(PGPSignature.POSITIVE_CERTIFICATION, masterPrivateKey);
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for (String userId : userIds) {
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PGPContentSignerBuilder signerBuilder = new JcaPGPContentSignerBuilder(
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masterPublicKey.getAlgorithm(), HashAlgorithmTags.SHA1)
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
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PGPSignatureGenerator sGen = new PGPSignatureGenerator(signerBuilder);
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PGPSignature certification = sGen.generateCertification(userId, masterPublicKey);
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sGen.init(PGPSignature.POSITIVE_CERTIFICATION, masterPrivateKey);
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masterPublicKey = PGPPublicKey.addCertification(masterPublicKey, userId, certification);
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}
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PGPSignature certification = sGen.generateCertification(userId, masterPublicKey);
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PGPKeyPair masterKeyPair = new PGPKeyPair(masterPublicKey, masterPrivateKey);
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masterPublicKey = PGPPublicKey.addCertification(masterPublicKey, userId, certification);
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}
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PGPSignatureSubpacketGenerator hashedPacketsGen = new PGPSignatureSubpacketGenerator();
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PGPSignatureSubpacketGenerator unhashedPacketsGen = new PGPSignatureSubpacketGenerator();
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int keyFlags = KeyFlags.CERTIFY_OTHER | KeyFlags.SIGN_DATA;
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if (canEncrypt) {
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keyFlags |= KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE;
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}
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hashedPacketsGen.setKeyFlags(true, keyFlags);
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hashedPacketsGen.setPreferredSymmetricAlgorithms(true, PREFERRED_SYMMETRIC_ALGORITHMS);
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hashedPacketsGen.setPreferredHashAlgorithms(true, PREFERRED_HASH_ALGORITHMS);
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hashedPacketsGen.setPreferredCompressionAlgorithms(true, PREFERRED_COMPRESSION_ALGORITHMS);
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if (keysExpiryDates.get(0) != null) {
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GregorianCalendar creationDate = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
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creationDate.setTime(masterPublicKey.getCreationTime());
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GregorianCalendar expiryDate = keysExpiryDates.get(0);
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//note that the below, (a/c) - (b/c) is *not* the same as (a - b) /c
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//here we purposefully ignore partial days in each date - long type has no fractional part!
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long numDays =
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(expiryDate.getTimeInMillis() / 86400000) - (creationDate.getTimeInMillis() / 86400000);
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if (numDays <= 0) {
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throw new PgpGeneralException(
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mContext.getString(R.string.error_expiry_must_come_after_creation));
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masterKeyPair = new PGPKeyPair(masterPublicKey, masterPrivateKey);
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}
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hashedPacketsGen.setKeyExpirationTime(false, numDays * 86400);
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} else {
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//do this explicitly, although since we're rebuilding,
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hashedPacketsGen.setKeyExpirationTime(false, 0);
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//this happens anyway
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PGPSignatureSubpacketGenerator hashedPacketsGen;
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PGPSignatureSubpacketGenerator unhashedPacketsGen; {
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hashedPacketsGen = new PGPSignatureSubpacketGenerator();
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unhashedPacketsGen = new PGPSignatureSubpacketGenerator();
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int usageId = keysUsages.get(0);
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boolean canEncrypt =
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(usageId == Id.choice.usage.encrypt_only || usageId == Id.choice.usage.sign_and_encrypt);
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int keyFlags = KeyFlags.CERTIFY_OTHER | KeyFlags.SIGN_DATA;
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if (canEncrypt) {
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keyFlags |= KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE;
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}
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hashedPacketsGen.setKeyFlags(true, keyFlags);
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hashedPacketsGen.setPreferredSymmetricAlgorithms(true, PREFERRED_SYMMETRIC_ALGORITHMS);
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hashedPacketsGen.setPreferredHashAlgorithms(true, PREFERRED_HASH_ALGORITHMS);
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hashedPacketsGen.setPreferredCompressionAlgorithms(true, PREFERRED_COMPRESSION_ALGORITHMS);
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if (keysExpiryDates.get(0) != null) {
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GregorianCalendar creationDate = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
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creationDate.setTime(masterPublicKey.getCreationTime());
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GregorianCalendar expiryDate = keysExpiryDates.get(0);
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//note that the below, (a/c) - (b/c) is *not* the same as (a - b) /c
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//here we purposefully ignore partial days in each date - long type has no fractional part!
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long numDays =
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(expiryDate.getTimeInMillis() / 86400000) - (creationDate.getTimeInMillis() / 86400000);
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if (numDays <= 0) {
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throw new PgpGeneralException(
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mContext.getString(R.string.error_expiry_must_come_after_creation));
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}
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hashedPacketsGen.setKeyExpirationTime(false, numDays * 86400);
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} else {
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//do this explicitly, although since we're rebuilding,
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hashedPacketsGen.setKeyExpirationTime(false, 0);
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//this happens anyway
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}
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}
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updateProgress(R.string.progress_building_master_key, 30, 100);
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// define hashing and signing algos
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PGPDigestCalculator sha1Calc = new JcaPGPDigestCalculatorProviderBuilder().build().get(
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HashAlgorithmTags.SHA1);
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PGPContentSignerBuilder certificationSignerBuilder = new JcaPGPContentSignerBuilder(
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masterKeyPair.getPublicKey().getAlgorithm(), HashAlgorithmTags.SHA1);
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// Build key encrypter based on passphrase
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PBESecretKeyEncryptor keyEncryptor = new JcePBESecretKeyEncryptorBuilder(
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PGPEncryptedData.CAST5, sha1Calc)
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(
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newPassPhrase.toCharArray());
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keyGen = new PGPKeyRingGenerator(PGPSignature.POSITIVE_CERTIFICATION,
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masterKeyPair, mainUserId, sha1Calc, hashedPacketsGen.generate(),
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unhashedPacketsGen.generate(), certificationSignerBuilder, keyEncryptor);
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}
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updateProgress(R.string.progress_building_master_key, 30, 100);
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// define hashing and signing algos
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PGPDigestCalculator sha1Calc = new JcaPGPDigestCalculatorProviderBuilder().build().get(
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HashAlgorithmTags.SHA1);
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PGPContentSignerBuilder certificationSignerBuilder = new JcaPGPContentSignerBuilder(
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masterKeyPair.getPublicKey().getAlgorithm(), HashAlgorithmTags.SHA1);
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// Build key encrypter based on passphrase
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PBESecretKeyEncryptor keyEncryptor = new JcePBESecretKeyEncryptorBuilder(
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PGPEncryptedData.CAST5, sha1Calc)
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(
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newPassPhrase.toCharArray());
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PGPKeyRingGenerator keyGen = new PGPKeyRingGenerator(PGPSignature.POSITIVE_CERTIFICATION,
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masterKeyPair, mainUserId, sha1Calc, hashedPacketsGen.generate(),
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unhashedPacketsGen.generate(), certificationSignerBuilder, keyEncryptor);
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updateProgress(R.string.progress_adding_sub_keys, 40, 100);
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for (int i = 1; i < keys.size(); ++i) {
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@ -323,23 +335,23 @@ public class PgpKeyOperation {
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PGPSecretKey subKey = keys.get(i);
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PGPPublicKey subPublicKey = subKey.getPublicKey();
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PBESecretKeyDecryptor keyDecryptor2 = new JcePBESecretKeyDecryptorBuilder()
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PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder()
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(
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oldPassPhrase.toCharArray());
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PGPPrivateKey subPrivateKey = subKey.extractPrivateKey(keyDecryptor2);
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PGPPrivateKey subPrivateKey = subKey.extractPrivateKey(keyDecryptor);
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// TODO: now used without algorithm and creation time?! (APG 1)
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PGPKeyPair subKeyPair = new PGPKeyPair(subPublicKey, subPrivateKey);
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hashedPacketsGen = new PGPSignatureSubpacketGenerator();
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unhashedPacketsGen = new PGPSignatureSubpacketGenerator();
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PGPSignatureSubpacketGenerator hashedPacketsGen = new PGPSignatureSubpacketGenerator();
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PGPSignatureSubpacketGenerator unhashedPacketsGen = new PGPSignatureSubpacketGenerator();
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keyFlags = 0;
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int keyFlags = 0;
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usageId = keysUsages.get(i);
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canSign =
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int usageId = keysUsages.get(i);
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boolean canSign =
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(usageId == Id.choice.usage.sign_only || usageId == Id.choice.usage.sign_and_encrypt);
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canEncrypt =
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boolean canEncrypt =
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(usageId == Id.choice.usage.encrypt_only || usageId == Id.choice.usage.sign_and_encrypt);
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if (canSign) {
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Date todayDate = new Date(); //both sig times the same
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@ -402,37 +414,41 @@ public class PgpKeyOperation {
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if (passphrase == null) {
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throw new PgpGeneralException("Unable to obtain passphrase");
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} else {
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// create a signatureGenerator from the supplied masterKeyId and passphrase
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PGPSignatureGenerator signatureGenerator; {
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PGPSecretKey certificationKey = PgpKeyHelper.getCertificationKey(mContext, masterKeyId);
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if (certificationKey == null) {
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throw new PgpGeneralException(mContext.getString(R.string.error_signature_failed));
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}
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PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider(
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Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(passphrase.toCharArray());
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PGPPrivateKey signaturePrivateKey = certificationKey.extractPrivateKey(keyDecryptor);
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if (signaturePrivateKey == null) {
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throw new PgpGeneralException(
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mContext.getString(R.string.error_could_not_extract_private_key));
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}
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// TODO: SHA256 fixed?
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JcaPGPContentSignerBuilder contentSignerBuilder = new JcaPGPContentSignerBuilder(
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certificationKey.getPublicKey().getAlgorithm(), PGPUtil.SHA256)
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
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signatureGenerator = new PGPSignatureGenerator(contentSignerBuilder);
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signatureGenerator.init(PGPSignature.DIRECT_KEY, signaturePrivateKey);
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}
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{ // supply signatureGenerator with a SubpacketVector
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PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator();
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PGPSignatureSubpacketVector packetVector = spGen.generate();
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signatureGenerator.setHashedSubpackets(packetVector);
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}
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// fetch public key ring, add the certification and return it
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PGPPublicKeyRing pubring = ProviderHelper
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.getPGPPublicKeyRingByKeyId(mContext, pubKeyId);
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PGPSecretKey certificationKey = PgpKeyHelper.getCertificationKey(mContext, masterKeyId);
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if (certificationKey == null) {
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throw new PgpGeneralException(mContext.getString(R.string.error_signature_failed));
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}
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PBESecretKeyDecryptor keyDecryptor = new JcePBESecretKeyDecryptorBuilder().setProvider(
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Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(passphrase.toCharArray());
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PGPPrivateKey signaturePrivateKey = certificationKey.extractPrivateKey(keyDecryptor);
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if (signaturePrivateKey == null) {
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throw new PgpGeneralException(
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mContext.getString(R.string.error_could_not_extract_private_key));
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}
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// TODO: SHA256 fixed?
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JcaPGPContentSignerBuilder contentSignerBuilder = new JcaPGPContentSignerBuilder(
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certificationKey.getPublicKey().getAlgorithm(), PGPUtil.SHA256)
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
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PGPSignatureGenerator signatureGenerator = new PGPSignatureGenerator(
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contentSignerBuilder);
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signatureGenerator.init(PGPSignature.DIRECT_KEY, signaturePrivateKey);
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PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator();
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PGPSignatureSubpacketVector packetVector = spGen.generate();
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signatureGenerator.setHashedSubpackets(packetVector);
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PGPPublicKey signedKey = PGPPublicKey.addCertification(pubring.getPublicKey(pubKeyId),
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signatureGenerator.generate());
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pubring = PGPPublicKeyRing.insertPublicKey(pubring, signedKey);
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