diff options
Diffstat (limited to 'plugins/crypto-vala/src/cipher_converter.vala')
-rw-r--r-- | plugins/crypto-vala/src/cipher_converter.vala | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/plugins/crypto-vala/src/cipher_converter.vala b/plugins/crypto-vala/src/cipher_converter.vala deleted file mode 100644 index b2b52c5a..00000000 --- a/plugins/crypto-vala/src/cipher_converter.vala +++ /dev/null @@ -1,102 +0,0 @@ -using GLib; - -namespace Crypto { -public abstract class SymmetricCipherConverter : Converter, Object { - internal SymmetricCipher cipher; - internal size_t attached_taglen; - - public abstract ConverterResult convert(uint8[] inbuf, uint8[] outbuf, ConverterFlags flags, out size_t bytes_read, out size_t bytes_written) throws IOError; - - public uint8[] get_tag(size_t taglen) throws Error { - return cipher.get_tag(taglen); - } - - public void check_tag(uint8[] tag) throws Error { - cipher.check_tag(tag); - } - - public void reset() { - try { - cipher.reset(); - } catch (Crypto.Error e) { - warning(@"$(e.domain) error while resetting cipher: $(e.message)"); - } - } -} - -public class SymmetricCipherEncrypter : SymmetricCipherConverter { - public SymmetricCipherEncrypter(owned SymmetricCipher cipher, size_t attached_taglen = 0) { - this.cipher = (owned) cipher; - this.attached_taglen = attached_taglen; - } - - public override ConverterResult convert(uint8[] inbuf, uint8[] outbuf, ConverterFlags flags, out size_t bytes_read, out size_t bytes_written) throws IOError { - if (inbuf.length > outbuf.length) { - throw new IOError.NO_SPACE("CipherConverter needs at least the size of input as output space"); - } - if ((flags & ConverterFlags.INPUT_AT_END) != 0 && inbuf.length + attached_taglen > outbuf.length) { - throw new IOError.NO_SPACE("CipherConverter needs additional output space to attach tag"); - } - try { - if (inbuf.length > 0) { - cipher.encrypt(outbuf, inbuf); - } - bytes_read = inbuf.length; - bytes_written = inbuf.length; - if ((flags & ConverterFlags.INPUT_AT_END) != 0) { - if (attached_taglen > 0) { - Memory.copy((uint8*)outbuf + inbuf.length, get_tag(attached_taglen), attached_taglen); - bytes_written = inbuf.length + attached_taglen; - } - return ConverterResult.FINISHED; - } - if ((flags & ConverterFlags.FLUSH) != 0) { - return ConverterResult.FLUSHED; - } - return ConverterResult.CONVERTED; - } catch (Crypto.Error e) { - throw new IOError.FAILED(@"$(e.domain) error while decrypting: $(e.message)"); - } - } -} - -public class SymmetricCipherDecrypter : SymmetricCipherConverter { - public SymmetricCipherDecrypter(owned SymmetricCipher cipher, size_t attached_taglen = 0) { - this.cipher = (owned) cipher; - this.attached_taglen = attached_taglen; - } - - public override ConverterResult convert(uint8[] inbuf, uint8[] outbuf, ConverterFlags flags, out size_t bytes_read, out size_t bytes_written) throws IOError { - if (inbuf.length > outbuf.length + attached_taglen) { - throw new IOError.NO_SPACE("CipherConverter needs at least the size of input as output space"); - } - if ((flags & ConverterFlags.INPUT_AT_END) != 0 && inbuf.length < attached_taglen) { - throw new IOError.PARTIAL_INPUT("CipherConverter needs additional input to read tag"); - } else if ((flags & ConverterFlags.INPUT_AT_END) == 0 && inbuf.length < attached_taglen + 1) { - throw new IOError.PARTIAL_INPUT("CipherConverter needs additional input to make sure to not accidentally read tag"); - } - try { - inbuf.length -= (int) attached_taglen; - if (inbuf.length > 0) { - cipher.decrypt(outbuf, inbuf); - } - bytes_read = inbuf.length; - bytes_written = inbuf.length; - inbuf.length += (int) attached_taglen; - if ((flags & ConverterFlags.INPUT_AT_END) != 0) { - if (attached_taglen > 0) { - check_tag(inbuf[(inbuf.length - attached_taglen):inbuf.length]); - bytes_read = inbuf.length; - } - return ConverterResult.FINISHED; - } - if ((flags & ConverterFlags.FLUSH) != 0) { - return ConverterResult.FLUSHED; - } - return ConverterResult.CONVERTED; - } catch (Crypto.Error e) { - throw new IOError.FAILED(@"$(e.domain) error while decrypting: $(e.message)"); - } - } -} -} |