diff options
Diffstat (limited to 'src/de/gultsch/chat/crypto/PgpEngine.java')
-rw-r--r-- | src/de/gultsch/chat/crypto/PgpEngine.java | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/src/de/gultsch/chat/crypto/PgpEngine.java b/src/de/gultsch/chat/crypto/PgpEngine.java deleted file mode 100644 index 6d94e577..00000000 --- a/src/de/gultsch/chat/crypto/PgpEngine.java +++ /dev/null @@ -1,148 +0,0 @@ -package de.gultsch.chat.crypto; - -import java.io.ByteArrayInputStream; -import java.io.ByteArrayOutputStream; -import java.io.InputStream; - -import org.openintents.openpgp.OpenPgpError; -import org.openintents.openpgp.OpenPgpSignatureResult; -import org.openintents.openpgp.util.OpenPgpApi; -import org.openintents.openpgp.util.OpenPgpConstants; - -import android.app.PendingIntent; -import android.os.Bundle; -import android.util.Log; - -public class PgpEngine { - private OpenPgpApi api; - - public PgpEngine(OpenPgpApi api) { - this.api = api; - } - - public String decrypt(String message) throws UserInputRequiredException, - OpenPgpException { - InputStream is = new ByteArrayInputStream(message.getBytes()); - ByteArrayOutputStream os = new ByteArrayOutputStream(); - Bundle result = api.decryptAndVerify(is, os); - switch (result.getInt(OpenPgpConstants.RESULT_CODE)) { - case OpenPgpConstants.RESULT_CODE_SUCCESS: - return os.toString(); - case OpenPgpConstants.RESULT_CODE_USER_INTERACTION_REQUIRED: - throw new UserInputRequiredException( - (PendingIntent) result - .getParcelable(OpenPgpConstants.RESULT_INTENT)); - case OpenPgpConstants.RESULT_CODE_ERROR: - throw new OpenPgpException( - (OpenPgpError) result - .getParcelable(OpenPgpConstants.RESULT_ERRORS)); - default: - return null; - } - } - - public String encrypt(long keyId, String message) { - Bundle params = new Bundle(); - params.putBoolean(OpenPgpConstants.PARAMS_REQUEST_ASCII_ARMOR, true); - long[] keyIds = { keyId }; - params.putLongArray(OpenPgpConstants.PARAMS_KEY_IDS, keyIds); - - InputStream is = new ByteArrayInputStream(message.getBytes()); - ByteArrayOutputStream os = new ByteArrayOutputStream(); - Bundle result = api.encrypt(params, is, os); - StringBuilder encryptedMessageBody = new StringBuilder(); - String[] lines = os.toString().split("\n"); - for (int i = 3; i < lines.length - 1; ++i) { - encryptedMessageBody.append(lines[i].trim()); - } - return encryptedMessageBody.toString(); - } - - public long fetchKeyId(String status, String signature) - throws OpenPgpException { - StringBuilder pgpSig = new StringBuilder(); - pgpSig.append("-----BEGIN PGP SIGNED MESSAGE-----"); - pgpSig.append('\n'); - pgpSig.append("Hash: SHA1"); - pgpSig.append('\n'); - pgpSig.append('\n'); - pgpSig.append(status); - pgpSig.append('\n'); - pgpSig.append("-----BEGIN PGP SIGNATURE-----"); - pgpSig.append('\n'); - pgpSig.append('\n'); - pgpSig.append(signature.replace("\n", "").trim()); - pgpSig.append('\n'); - pgpSig.append("-----END PGP SIGNATURE-----"); - Bundle params = new Bundle(); - params.putBoolean(OpenPgpConstants.PARAMS_REQUEST_ASCII_ARMOR, true); - InputStream is = new ByteArrayInputStream(pgpSig.toString().getBytes()); - ByteArrayOutputStream os = new ByteArrayOutputStream(); - Bundle result = api.decryptAndVerify(params, is, os); - switch (result.getInt(OpenPgpConstants.RESULT_CODE)) { - case OpenPgpConstants.RESULT_CODE_SUCCESS: - OpenPgpSignatureResult sigResult = result - .getParcelable(OpenPgpConstants.RESULT_SIGNATURE); - return sigResult.getKeyId(); - case OpenPgpConstants.RESULT_CODE_USER_INTERACTION_REQUIRED: - break; - case OpenPgpConstants.RESULT_CODE_ERROR: - throw new OpenPgpException( - (OpenPgpError) result - .getParcelable(OpenPgpConstants.RESULT_ERRORS)); - } - return 0; - } - - public String generateSignature(String status) - throws UserInputRequiredException { - Bundle params = new Bundle(); - params.putBoolean(OpenPgpConstants.PARAMS_REQUEST_ASCII_ARMOR, true); - InputStream is = new ByteArrayInputStream(status.getBytes()); - ByteArrayOutputStream os = new ByteArrayOutputStream(); - Bundle result = api.sign(params, is, os); - StringBuilder signatureBuilder = new StringBuilder(); - switch (result.getInt(OpenPgpConstants.RESULT_CODE)) { - case OpenPgpConstants.RESULT_CODE_SUCCESS: - String[] lines = os.toString().split("\n"); - for (int i = 7; i < lines.length - 1; ++i) { - signatureBuilder.append(lines[i].trim()); - } - break; - case OpenPgpConstants.RESULT_CODE_USER_INTERACTION_REQUIRED: - UserInputRequiredException exception = new UserInputRequiredException( - (PendingIntent) result - .getParcelable(OpenPgpConstants.RESULT_INTENT)); - throw exception; - case OpenPgpConstants.RESULT_CODE_ERROR: - break; - } - return signatureBuilder.toString(); - } - - public class UserInputRequiredException extends Exception { - private static final long serialVersionUID = -6913480043269132016L; - private PendingIntent pi; - - public UserInputRequiredException(PendingIntent pi) { - this.pi = pi; - } - - public PendingIntent getPendingIntent() { - return this.pi; - } - } - - public class OpenPgpException extends Exception { - private static final long serialVersionUID = -7324789703473056077L; - private OpenPgpError error; - - public OpenPgpException(OpenPgpError openPgpError) { - this.error = openPgpError; - } - - public OpenPgpError getOpenPgpError() { - return this.error; - } - } -} |