public SignatureResult Sign(GpgmeData plain, GpgmeData sig, SignatureMode mode)
{
EnsureValid();
if (plain == null)
{
throw new ArgumentNullException(nameof(plain), "Source data buffer must be supplied.");
}
if (!(plain.IsValid))
{
throw new InvalidDataBufferException("The specified source data buffer is invalid.");
}
if (sig == null)
{
throw new ArgumentNullException(nameof(sig), "Destination data buffer must be supplied.");
}
if (!(sig.IsValid))
{
throw new InvalidDataBufferException("The specified destination data buffer is invalid.");
}
lock (CtxLock) {
int err = libgpgme.NativeMethods.gpgme_op_sign(
CtxPtr,
plain.dataPtr,
sig.dataPtr,
(gpgme_sig_mode_t)mode);
gpg_err_code_t errcode = libgpgerror.gpg_err_code(err);
switch (errcode)
{
case gpg_err_code_t.GPG_ERR_NO_ERROR:
break;
case gpg_err_code_t.GPG_ERR_UNUSABLE_SECKEY:
throw new InvalidKeyException(
"There is one or more invalid signing key(s) in the current context.");
case gpg_err_code_t.GPG_ERR_INV_VALUE:
throw new InvalidPtrException(
"Either the context, plain text or cipher text pointer is invalid.");
default:
throw GpgmeError.CreateException(errcode);
}
IntPtr rst_ptr = libgpgme.NativeMethods.gpgme_op_sign_result(CtxPtr);
if (rst_ptr != IntPtr.Zero)
{
var sig_rst = new SignatureResult(rst_ptr);
return(sig_rst);
}
throw new GeneralErrorException("An unexpected error occurred. " + errcode.ToString());
}
}
public TrustItem[] GetTrustList(string pattern, int maxlevel)
{
if (Context == null ||
!(Context.IsValid))
{
throw new InvalidContextException();
}
if (pattern == null || pattern.Equals(String.Empty))
{
throw new ArgumentException("An invalid pattern has been specified.");
}
IntPtr pattern_ptr = Gpgme.StringToCoTaskMemUTF8(pattern);
var lst = new List <TrustItem>();
lock (Context.CtxLock) {
int err = libgpgme.NativeMethods.gpgme_op_trustlist_start(Context.CtxPtr, pattern_ptr, maxlevel);
gpg_err_code_t errcode = libgpgerror.gpg_err_code(err);
if (errcode != gpg_err_code_t.GPG_ERR_NO_ERROR)
{
if (pattern_ptr != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pattern_ptr);
}
throw GpgmeError.CreateException(errcode);
}
while (errcode == gpg_err_code_t.GPG_ERR_NO_ERROR)
{
IntPtr item_ptr;
err = libgpgme.NativeMethods.gpgme_op_trustlist_next(Context.CtxPtr, out item_ptr);
errcode = libgpgerror.gpg_err_code(err);
if (errcode == gpg_err_code_t.GPG_ERR_NO_ERROR)
{
lst.Add(new TrustItem(item_ptr));
}
}
// Release context if there are any pending trustlist items
libgpgme.NativeMethods.gpgme_op_trustlist_end(Context.CtxPtr);
if (pattern_ptr != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pattern_ptr);
}
if (errcode != gpg_err_code_t.GPG_ERR_EOF)
{
throw GpgmeError.CreateException(errcode);
}
}
if (lst.Count == 0)
{
return(new TrustItem[0]);
}
return(lst.ToArray());
}
public VerificationResult Verify(GpgmeData signature, GpgmeData signedtext, GpgmeData plain)
{
EnsureValid();
if (signature == null)
{
throw new ArgumentNullException("signature", "A signature data buffer must be supplied.");
}
if (!(signature.IsValid))
{
throw new InvalidDataBufferException("The specified signature data buffer is invalid.");
}
if (
(signedtext == null || !(signedtext.IsValid)) &&
(plain == null || !(plain.IsValid))
)
{
throw new InvalidDataBufferException(
"Either the signed text must be provided in order to prove the detached signature, or an empty data buffer to store the plain text result.");
}
lock (CtxLock) {
IntPtr sigtxt_ptr = IntPtr.Zero, plain_ptr = IntPtr.Zero;
IntPtr sig_ptr = signature.dataPtr;
if (signedtext != null && signedtext.IsValid)
{
sigtxt_ptr = signedtext.dataPtr;
}
if (plain != null && plain.IsValid)
{
plain_ptr = plain.dataPtr;
}
int err = libgpgme.NativeMethods.gpgme_op_verify(
CtxPtr,
sig_ptr,
sigtxt_ptr,
plain_ptr);
gpg_err_code_t errcode = libgpgerror.gpg_err_code(err);
switch (errcode)
{
case gpg_err_code_t.GPG_ERR_NO_ERROR:
break;
case gpg_err_code_t.GPG_ERR_NO_DATA:
break;
case gpg_err_code_t.GPG_ERR_INV_VALUE:
throw new InvalidDataBufferException(
"Either the signature, signed text or plain text data buffer is invalid.");
default:
throw GpgmeError.CreateException(errcode);
}
IntPtr rst_ptr = libgpgme.NativeMethods.gpgme_op_verify_result(CtxPtr);
if (rst_ptr != IntPtr.Zero)
{
VerificationResult ver_rst = new VerificationResult(rst_ptr);
if (errcode == gpg_err_code_t.GPG_ERR_NO_DATA)
{
throw new NoDataException("The signature does not contain any data to verify.");
}
return(ver_rst);
}
throw new GeneralErrorException("Could not retrieve verification result.");
}
}
public CombinedResult DecryptAndVerify(GpgmeData cipher, GpgmeData plain)
{
EnsureValid();
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher), "Source data buffer must be supplied.");
}
if (!(cipher.IsValid))
{
throw new InvalidDataBufferException("The specified source data buffer is invalid.");
}
if (plain == null)
{
throw new ArgumentNullException(nameof(plain), "Destination data buffer must be supplied.");
}
if (!(plain.IsValid))
{
throw new InvalidDataBufferException("The specified destination data buffer is invalid.");
}
lock (CtxLock) {
#if (VERBOSE_DEBUG)
DebugOutput("gpgme_op_decrypt_verify(..) START");
#endif
int err = libgpgme.NativeMethods.gpgme_op_decrypt_verify(
CtxPtr,
cipher.dataPtr,
plain.dataPtr);
#if (VERBOSE_DEBUG)
DebugOutput("gpgme_op_decrypt_verify(..) DONE");
#endif
gpg_err_code_t errcode = libgpgerror.gpg_err_code(err);
switch (errcode)
{
case gpg_err_code_t.GPG_ERR_NO_ERROR:
break;
case gpg_err_code_t.GPG_ERR_NO_DATA:
// no encrypted data found - maybe it is only signed.
break;
case gpg_err_code_t.GPG_ERR_INV_VALUE:
throw new InvalidPtrException(
"Either the context, cipher text or plain text pointer is invalid.");
default:
throw GpgmeError.CreateException(errcode);
}
DecryptionResult dec_rst = null;
IntPtr rst_ptr = libgpgme.NativeMethods.gpgme_op_decrypt_result(CtxPtr);
if (rst_ptr != IntPtr.Zero)
{
dec_rst = new DecryptionResult(rst_ptr);
}
switch (errcode)
{
case gpg_err_code_t.GPG_ERR_NO_ERROR:
break;
case gpg_err_code_t.GPG_ERR_DECRYPT_FAILED:
if (dec_rst == null)
{
throw new DecryptionFailedException("An invalid cipher text has been supplied.");
}
throw new DecryptionFailedException(dec_rst);
case gpg_err_code_t.GPG_ERR_BAD_PASSPHRASE:
throw new BadPassphraseException(dec_rst);
default:
throw GpgmeError.CreateException(errcode);
}
/* If decryption failed, verification cannot be proceeded */
VerificationResult ver_rst = null;
rst_ptr = libgpgme.NativeMethods.gpgme_op_verify_result(CtxPtr);
if (rst_ptr != IntPtr.Zero)
{
ver_rst = new VerificationResult(rst_ptr);
}
GC.KeepAlive(cipher);
GC.KeepAlive(plain);
return(new CombinedResult(dec_rst, ver_rst));
}
}
public DecryptionResult Decrypt(GpgmeData cipher, GpgmeData plain)
{
EnsureValid();
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher), "Source data buffer must be supplied.");
}
if (!(cipher.IsValid))
{
throw new InvalidDataBufferException("The specified source data buffer is invalid.");
}
if (plain == null)
{
throw new ArgumentNullException(nameof(plain), "Destination data buffer must be supplied.");
}
if (!(plain.IsValid))
{
throw new InvalidDataBufferException("The specified destination data buffer is invalid.");
}
lock (CtxLock) {
#if (VERBOSE_DEBUG)
DebugOutput("gpgme_op_decrypt(..) START");
#endif
int err = libgpgme.NativeMethods.gpgme_op_decrypt(
CtxPtr,
cipher.dataPtr,
plain.dataPtr);
#if (VERBOSE_DEBUG)
DebugOutput("gpgme_op_decrypt(..) DONE");
#endif
gpg_err_code_t errcode = libgpgerror.gpg_err_code(err);
switch (errcode)
{
case gpg_err_code_t.GPG_ERR_NO_ERROR:
break;
case gpg_err_code_t.GPG_ERR_NO_DATA:
throw new NoDataException("The cipher does not contain any data to decrypt or is corrupt.");
case gpg_err_code_t.GPG_ERR_INV_VALUE:
throw new InvalidPtrException(
"Either the context, cipher text or plain text pointer is invalid.");
default:
throw GpgmeError.CreateException(errcode);
}
DecryptionResult dec_rst = null;
IntPtr rst_ptr = libgpgme.NativeMethods.gpgme_op_decrypt_result(CtxPtr);
if (rst_ptr != IntPtr.Zero)
{
dec_rst = new DecryptionResult(rst_ptr);
}
switch (errcode)
{
case gpg_err_code_t.GPG_ERR_NO_ERROR:
break;
case gpg_err_code_t.GPG_ERR_DECRYPT_FAILED:
if (dec_rst == null)
{
throw new DecryptionFailedException("An invalid cipher text has been supplied.");
}
throw new DecryptionFailedException(dec_rst);
case gpg_err_code_t.GPG_ERR_BAD_PASSPHRASE:
throw new BadPassphraseException(dec_rst);
default:
throw GpgmeError.CreateException(errcode);
}
GC.KeepAlive(cipher);
GC.KeepAlive(plain);
return(dec_rst);
}
}
public EncryptionResult EncryptAndSign(Key[] recipients, EncryptFlags flags, GpgmeData plain, GpgmeData cipher)
{
EnsureValid();
if (plain == null)
{
throw new ArgumentNullException(nameof(plain), "Source data buffer must be supplied.");
}
if (!(plain.IsValid))
{
throw new InvalidDataBufferException("The specified source data buffer is invalid.");
}
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher), "Destination data buffer must be supplied.");
}
if (!(cipher.IsValid))
{
throw new InvalidDataBufferException("The specified destination data buffer is invalid.");
}
IntPtr[] recp = Gpgme.KeyArrayToIntPtrArray(recipients);
lock (CtxLock) {
int err = libgpgme.NativeMethods.gpgme_op_encrypt_sign(
CtxPtr,
recp,
(gpgme_encrypt_flags_t)flags,
plain.dataPtr,
cipher.dataPtr);
gpg_err_code_t errcode = libgpgerror.gpg_err_code(err);
switch (errcode)
{
case gpg_err_code_t.GPG_ERR_NO_ERROR:
break;
case gpg_err_code_t.GPG_ERR_UNUSABLE_PUBKEY:
break;
case gpg_err_code_t.GPG_ERR_GENERAL: // Bug? should be GPG_ERR_UNUSABLE_PUBKEY
break;
case gpg_err_code_t.GPG_ERR_UNUSABLE_SECKEY:
throw new InvalidKeyException(
"There is one or more invalid signing key(s) in the current context.");
case gpg_err_code_t.GPG_ERR_INV_VALUE:
throw new InvalidPtrException(
"Either the context, recipient key array, plain text or cipher text pointer is invalid.");
default:
throw GpgmeError.CreateException(errcode);
}
IntPtr rst_ptr = libgpgme.NativeMethods.gpgme_op_encrypt_result(CtxPtr);
GC.KeepAlive(recp);
GC.KeepAlive(recipients);
GC.KeepAlive(plain);
GC.KeepAlive(cipher);
if (rst_ptr != IntPtr.Zero)
{
var enc_rst = new EncryptionResult(rst_ptr);
return(enc_rst);
}
throw new GeneralErrorException("An unexpected error occurred. " + errcode.ToString());
}
}
