private byte[] getSecret(String walletImportFormat) throws IOException { byte[] bytes = Base58.decode(walletImportFormat); if (bytes[0] != WIF_FIRST_BYTE) throw new IOException("Unknown format: 0x80 expected as first byte, but secret " + walletImportFormat + " was " + bytes[0]); if (bytes.length != WIF_SECRET_LENGTH) throw new IOException("Unknown format: " + WIF_SECRET_LENGTH + " bytes expected, but secret " + walletImportFormat + " was " + bytes.length + " long"); byte[] hash = cryptography().doubleSha256(bytes, 33); for (int i = 0; i < 4; i++) { if (hash[i] != bytes[33 + i]) throw new IOException("Hash check failed for secret " + walletImportFormat); } return Arrays.copyOfRange(bytes, 1, 33); }
public BitmessageAddress(String address) { try { this.address = address; byte[] bytes = Base58.decode(address.substring(3)); ByteArrayInputStream in = new ByteArrayInputStream(bytes); AccessCounter counter = new AccessCounter(); this.version = varInt(in, counter); this.stream = varInt(in, counter); this.ripe = Bytes.expand(bytes(in, bytes.length - counter.length() - 4), 20); // test checksum byte[] checksum = Security.doubleSha512(bytes, bytes.length - 4); byte[] expectedChecksum = bytes(in, 4); for (int i = 0; i < 4; i++) { if (expectedChecksum[i] != checksum[i]) throw new IllegalArgumentException("Checksum of address failed"); } if (version < 4) { checksum = Security.sha512(Arrays.copyOfRange(bytes, 0, counter.length()), ripe); this.tag = null; this.publicDecryptionKey = Arrays.copyOfRange(checksum, 0, 32); } else { checksum = Security.doubleSha512(Arrays.copyOfRange(bytes, 0, counter.length()), ripe); this.tag = Arrays.copyOfRange(checksum, 32, 64); this.publicDecryptionKey = Arrays.copyOfRange(checksum, 0, 32); } } catch (IOException e) { throw new RuntimeException(e); } }
public BitmessageAddress(String address) { try { this.address = address; byte[] bytes = Base58.decode(address.substring(3)); ByteArrayInputStream in = new ByteArrayInputStream(bytes); AccessCounter counter = new AccessCounter(); this.version = varInt(in, counter); this.stream = varInt(in, counter); this.ripe = Bytes.expand(bytes(in, bytes.length - counter.length() - 4), 20); // test checksum byte[] checksum = cryptography().doubleSha512(bytes, bytes.length - 4); byte[] expectedChecksum = bytes(in, 4); for (int i = 0; i < 4; i++) { if (expectedChecksum[i] != checksum[i]) throw new IllegalArgumentException("Checksum of address failed"); } if (version < 4) { checksum = cryptography().sha512(Arrays.copyOfRange(bytes, 0, counter.length()), ripe); this.tag = null; this.publicDecryptionKey = Arrays.copyOfRange(checksum, 0, 32); } else { checksum = cryptography().doubleSha512(Arrays.copyOfRange(bytes, 0, counter.length()), ripe); this.tag = Arrays.copyOfRange(checksum, 32, 64); this.publicDecryptionKey = Arrays.copyOfRange(checksum, 0, 32); } } catch (IOException e) { throw new ApplicationException(e); } }