diff options
Diffstat (limited to 'OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyHelper.java')
| -rw-r--r-- | OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyHelper.java | 137 |
1 files changed, 64 insertions, 73 deletions
diff --git a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyHelper.java b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyHelper.java index b3e21685e..71c921c33 100644 --- a/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyHelper.java +++ b/OpenPGP-Keychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyHelper.java @@ -32,6 +32,7 @@ import org.spongycastle.openpgp.PGPSecretKey; import org.spongycastle.openpgp.PGPSecretKeyRing; import org.spongycastle.openpgp.PGPSignature; import org.spongycastle.openpgp.PGPSignatureSubpacketVector; +import org.spongycastle.util.encoders.Hex; import org.sufficientlysecure.keychain.Constants; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.provider.ProviderHelper; @@ -415,55 +416,30 @@ public class PgpKeyHelper { String algorithmStr = null; switch (algorithm) { - case PGPPublicKey.RSA_ENCRYPT: - case PGPPublicKey.RSA_GENERAL: - case PGPPublicKey.RSA_SIGN: { - algorithmStr = "RSA"; - break; - } - - case PGPPublicKey.DSA: { - algorithmStr = "DSA"; - break; - } - - case PGPPublicKey.ELGAMAL_ENCRYPT: - case PGPPublicKey.ELGAMAL_GENERAL: { - algorithmStr = "ElGamal"; - break; - } + case PGPPublicKey.RSA_ENCRYPT: + case PGPPublicKey.RSA_GENERAL: + case PGPPublicKey.RSA_SIGN: { + algorithmStr = "RSA"; + break; + } - default: { - algorithmStr = "Unknown"; - break; - } - } - return algorithmStr + ", " + keySize + " bit"; - } + case PGPPublicKey.DSA: { + algorithmStr = "DSA"; + break; + } - /** - * Converts fingerprint to hex with whitespaces after 4 characters - * - * @param fp - * @return - */ - public static String convertFingerprintToHex(byte[] fp, boolean chunked) { - String fingerPrint = ""; - for (int i = 0; i < fp.length; ++i) { - if (chunked && i != 0 && i % 10 == 0) { - fingerPrint += " "; - } else if (chunked && i != 0 && i % 2 == 0) { - fingerPrint += " "; + case PGPPublicKey.ELGAMAL_ENCRYPT: + case PGPPublicKey.ELGAMAL_GENERAL: { + algorithmStr = "ElGamal"; + break; } - String chunk = Integer.toHexString((fp[i] + 256) % 256).toUpperCase(Locale.US); - while (chunk.length() < 2) { - chunk = "0" + chunk; + + default: { + algorithmStr = "Unknown"; + break; } - fingerPrint += chunk; } - - return fingerPrint; - + return algorithmStr + ", " + keySize + " bit"; } public static String getFingerPrint(Context context, long keyId) { @@ -481,52 +457,68 @@ public class PgpKeyHelper { return convertFingerprintToHex(key.getFingerprint(), true); } - public static boolean isSecretKeyPrivateEmpty(PGPSecretKey secretKey) { - return secretKey.isPrivateKeyEmpty(); - } - -// public static boolean isSecretKeyPrivateEmpty(Context context, long keyId) { -// PGPSecretKey secretKey = ProviderHelper.getPGPSecretKeyByKeyId(context, keyId); -// if (secretKey == null) { -// Log.e(Constants.TAG, "Key could not be found!"); -// return false; // could be a public key, assume it is not empty -// } -// return isSecretKeyPrivateEmpty(secretKey); -// } - - public static String convertKeyIdToHex(long keyId) { - String fingerPrint = Long.toHexString(keyId & 0xffffffffL).toUpperCase(Locale.US); - while (fingerPrint.length() < 8) { - fingerPrint = "0" + fingerPrint; + /** + * Converts fingerprint to hex (optional: with whitespaces after 4 characters) + * <p/> + * Fingerprint is shown using lowercase characters. Studies have shown that humans can + * better differentiate between numbers and letters when letters are lowercase. + * + * @param fingerprint + * @param split split into 4 character chunks + * @return + */ + public static String convertFingerprintToHex(byte[] fingerprint, boolean split) { + String hexString = Hex.toHexString(fingerprint); + if (split) { + hexString = hexString.replaceAll("(.{4})(?!$)", "$1 "); } - return fingerPrint; + + return hexString; } /** - * TODO: documentation - * + * Convert key id from long to 64 bit hex string + * <p/> + * V4: "The Key ID is the low-order 64 bits of the fingerprint" + * <p/> + * see http://tools.ietf.org/html/rfc4880#section-12.2 + * * @param keyId * @return */ - public static String convertKeyToHex(long keyId) { - return convertKeyIdToHex(keyId >> 32) + convertKeyIdToHex(keyId); + public static String convertKeyIdToHex(long keyId) { + return "0x" + convertKeyIdToHex32bit(keyId >> 32) + convertKeyIdToHex32bit(keyId); + } + + private static String convertKeyIdToHex32bit(long keyId) { + String hexString = Long.toHexString(keyId & 0xffffffffL).toLowerCase(Locale.US); + while (hexString.length() < 8) { + hexString = "0" + hexString; + } + return hexString; } - public static long convertHexToKeyId(String data) { - int len = data.length(); - String s2 = data.substring(len - 8); - String s1 = data.substring(0, len - 8); + /** + * Used in HkpKeyServer to convert hex encoded key ids back to long. + * + * @param hexString + * @return + */ + public static long convertHexToKeyId(String hexString) { + int len = hexString.length(); + String s2 = hexString.substring(len - 8); + String s1 = hexString.substring(0, len - 8); return (Long.parseLong(s1, 16) << 32) | Long.parseLong(s2, 16); } /** * Splits userId string into naming part, email part, and comment part - * + * * @param userId * @return array with naming (0), email (1), comment (2) */ public static String[] splitUserId(String userId) { - String[] result = new String[] { null, null, null }; + String[] result = new String[]{null, null, null}; if (userId == null || userId.equals("")) { return result; @@ -547,7 +539,6 @@ public class PgpKeyHelper { result[0] = matcher.group(1); result[1] = matcher.group(3); result[2] = matcher.group(2); - return result; } return result; |