public Collection<KeyPair> loadKeyPairs(
String resourceKey,
String pubData,
String prvData,
String prvEncryption,
FilePasswordProvider passwordProvider)
throws IOException, GeneralSecurityException {
Decoder b64Decoder = Base64.getDecoder();
byte[] pubBytes = b64Decoder.decode(pubData);
byte[] prvBytes = b64Decoder.decode(prvData);
String password = null;
if ((GenericUtils.length(prvEncryption) > 0)
&& (!NO_PRIVATE_KEY_ENCRYPTION_VALUE.equalsIgnoreCase(prvEncryption))) {
password = passwordProvider.getPassword(resourceKey);
}
if (GenericUtils.isEmpty(prvEncryption)
|| NO_PRIVATE_KEY_ENCRYPTION_VALUE.equalsIgnoreCase(prvEncryption)
|| GenericUtils.isEmpty(password)) {
return loadKeyPairs(resourceKey, pubBytes, prvBytes);
}
// format is "<cipher><bits>-<mode>" - e.g., "aes256-cbc"
int pos = prvEncryption.indexOf('-');
if (pos <= 0) {
throw new StreamCorruptedException("Missing private key encryption mode in " + prvEncryption);
}
String mode = prvEncryption.substring(pos + 1).toUpperCase();
String algName = null;
int numBits = 0;
for (int index = 0; index < pos; index++) {
char ch = prvEncryption.charAt(index);
if ((ch >= '0') && (ch <= '9')) {
algName = prvEncryption.substring(0, index).toUpperCase();
numBits = Integer.parseInt(prvEncryption.substring(index, pos));
break;
}
}
if (GenericUtils.isEmpty(algName) || (numBits <= 0)) {
throw new StreamCorruptedException(
"Missing private key encryption algorithm details in " + prvEncryption);
}
prvBytes =
PuttyKeyPairResourceParser.decodePrivateKeyBytes(
prvBytes, algName, numBits, mode, password);
return loadKeyPairs(resourceKey, pubBytes, prvBytes);
}
@Override
public boolean canExtractKeyPairs(String resourceKey, List<String> lines)
throws IOException, GeneralSecurityException {
if (!PuttyKeyPairResourceParser.super.canExtractKeyPairs(resourceKey, lines)) {
return false;
}
for (String l : lines) {
l = GenericUtils.trimToEmpty(l);
if (!l.startsWith(KEY_FILE_HEADER_PREFIX)) {
continue;
}
int pos = l.indexOf(':');
if ((pos <= 0) || (pos >= (l.length() - 1))) {
return false;
}
String typeValue = l.substring(pos + 1).trim();
return Objects.equals(getKeyType(), typeValue);
}
return false;
}
