diff options
Diffstat (limited to 'src/org/thialfihar/android/apg/Apg.java')
| -rw-r--r-- | src/org/thialfihar/android/apg/Apg.java | 132 |
1 files changed, 130 insertions, 2 deletions
diff --git a/src/org/thialfihar/android/apg/Apg.java b/src/org/thialfihar/android/apg/Apg.java index 91532b64f..d3be3907c 100644 --- a/src/org/thialfihar/android/apg/Apg.java +++ b/src/org/thialfihar/android/apg/Apg.java @@ -118,6 +118,7 @@ public class Apg { public static final String IMPORT = "org.thialfihar.android.apg.intent.IMPORT"; public static final String LOOK_UP_KEY_ID = "org.thialfihar.android.apg.intent.LOOK_UP_KEY_ID"; public static final String LOOK_UP_KEY_ID_AND_RETURN = "org.thialfihar.android.apg.intent.LOOK_UP_KEY_ID_AND_RETURN"; + public static final String GENERATE_SIGNATURE = "org.thialfihar.android.apg.intent.GENERATE_SIGNATURE"; } public static final String EXTRA_TEXT = "text"; @@ -133,6 +134,8 @@ public class Apg { public static final String EXTRA_SIGNATURE_USER_ID = "signatureUserId"; public static final String EXTRA_SIGNATURE_SUCCESS = "signatureSuccess"; public static final String EXTRA_SIGNATURE_UNKNOWN = "signatureUnknown"; + public static final String EXTRA_SIGNATURE_DATA = "signatureData"; + public static final String EXTRA_SIGNATURE_TEXT = "signatureText"; public static final String EXTRA_USER_ID = "userId"; public static final String EXTRA_USER_IDS = "userIds"; public static final String EXTRA_KEY_ID = "keyId"; @@ -1426,6 +1429,127 @@ public class Apg { progress.setProgress(R.string.progress_done, 100, 100); } + public static void generateSignature(Context context, + InputData data, OutputStream outStream, + boolean armored, boolean binary, + long signatureKeyId, String signaturePassPhrase, + int hashAlgorithm, + boolean forceV3Signature, + ProgressDialogUpdater progress) + throws GeneralException, PGPException, IOException, NoSuchAlgorithmException, + SignatureException { + Security.addProvider(new BouncyCastleProvider()); + + ArmoredOutputStream armorOut = null; + OutputStream out = null; + if (armored) { + armorOut = new ArmoredOutputStream(outStream); + armorOut.setHeader("Version", getFullVersion(context)); + out = armorOut; + } else { + out = outStream; + } + + PGPSecretKey signingKey = null; + PGPSecretKeyRing signingKeyRing = null; + PGPPrivateKey signaturePrivateKey = null; + + if (signatureKeyId == 0) { + throw new GeneralException(context.getString(R.string.error_noSignatureKey)); + } + + signingKeyRing = getSecretKeyRing(signatureKeyId); + signingKey = getSigningKey(signatureKeyId); + if (signingKey == null) { + throw new GeneralException(context.getString(R.string.error_signatureFailed)); + } + + if (signaturePassPhrase == null) { + throw new GeneralException(context.getString(R.string.error_noSignaturePassPhrase)); + } + signaturePrivateKey = + signingKey.extractPrivateKey(signaturePassPhrase.toCharArray(), + new BouncyCastleProvider()); + if (signaturePrivateKey == null) { + throw new GeneralException(context.getString(R.string.error_couldNotExtractPrivateKey)); + } + progress.setProgress(R.string.progress_preparingStreams, 0, 100); + + progress.setProgress(R.string.progress_preparingSignature, 30, 100); + + PGPSignatureGenerator signatureGenerator = null; + PGPV3SignatureGenerator signatureV3Generator = null; + + int type = PGPSignature.CANONICAL_TEXT_DOCUMENT; + if (binary) { + type = PGPSignature.BINARY_DOCUMENT; + } + + if (forceV3Signature) { + signatureV3Generator = + new PGPV3SignatureGenerator(signingKey.getPublicKey().getAlgorithm(), + hashAlgorithm, + new BouncyCastleProvider()); + signatureV3Generator.initSign(type, signaturePrivateKey); + } else { + signatureGenerator = + new PGPSignatureGenerator(signingKey.getPublicKey().getAlgorithm(), + hashAlgorithm, + new BouncyCastleProvider()); + signatureGenerator.initSign(type, signaturePrivateKey); + + PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator(); + String userId = getMainUserId(getMasterKey(signingKeyRing)); + spGen.setSignerUserID(false, userId); + signatureGenerator.setHashedSubpackets(spGen.generate()); + } + + progress.setProgress(R.string.progress_signing, 40, 100); + + InputStream inStream = data.getInputStream(); + if (binary) { + byte[] buffer = new byte[1 << 16]; + int n = 0; + while ((n = inStream.read(buffer)) > 0) { + if (forceV3Signature) { + signatureV3Generator.update(buffer, 0, n); + } else { + signatureGenerator.update(buffer, 0, n); + } + } + } else { + final BufferedReader reader = new BufferedReader(new InputStreamReader(inStream)); + final byte[] newline = "\r\n".getBytes("UTF-8"); + + while (true) { + final String line = reader.readLine(); + + if (line == null) { + break; + } + + if (forceV3Signature) { + processLine(line, null, signatureV3Generator); + signatureV3Generator.update(newline); + } else { + processLine(line, null, signatureGenerator); + signatureGenerator.update(newline); + } + } + } + + BCPGOutputStream bOut = new BCPGOutputStream(out); + if (forceV3Signature) { + signatureV3Generator.generate().encode(bOut); + } else { + signatureGenerator.generate().encode(bOut); + } + out.close(); + outStream.close(); + + progress.setProgress(R.string.progress_done, 100, 100); + } + public static long getDecryptionKeyId(Context context, InputData data) throws GeneralException, NoAsymmetricEncryptionException, IOException { InputStream in = PGPUtil.getDecoderStream(data.getInputStream()); @@ -1867,7 +1991,9 @@ public class Apg { final byte[] data = pLine.substring(0, len).getBytes("UTF-8"); - pArmoredOutput.write(data); + if (pArmoredOutput != null) { + pArmoredOutput.write(data); + } pSignatureGenerator.update(data); } @@ -1892,7 +2018,9 @@ public class Apg { final byte[] data = pLine.substring(0, len).getBytes("UTF-8"); - pArmoredOutput.write(data); + if (pArmoredOutput != null) { + pArmoredOutput.write(data); + } pSignatureGenerator.update(data); } |