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This is required in order to support IDEA encrypted keys
using gnupg-1.4.X. The raw key has two bytes which are part
of the checksum but not part of the key.
This will not get into upstream as upstream does not wish to support
IDEA at all even for backward compatibility.
Signed-off-by: Alon Bar-Lev <alonbl@gentoo.org>
diff -urNp gnupg-2.0.4.org/g10/seckey-cert.c gnupg-2.0.4/g10/seckey-cert.c
--- gnupg-2.0.4.org/g10/seckey-cert.c 2006-11-21 10:26:13.000000000 +0200
+++ gnupg-2.0.4/g10/seckey-cert.c 2007-06-22 18:08:48.000000000 +0300
@@ -211,6 +211,11 @@ do_check( PKT_secret_key *sk, const char
csum += checksum (buffer, ndata);
gcry_mpi_release (sk->skey[i]);
+ if (sk->protect.algo==CIPHER_ALGO_IDEA) {
+ buffer[0] = 0;
+ buffer[1] = 0;
+ }
+
err = gcry_mpi_scan( &sk->skey[i], GCRYMPI_FMT_USG,
buffer, ndata, &ndata );
xfree (buffer);
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