Curve 25519 encryption subkey - problem encrypting

[MFPA]

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Hash: SHA512



I recently created a new Curve 25519 encryption subkey. One of the
other PGPNET members tells me GnuPG 2.1.12 reports the subkey size as
0 and will not encrypt to this subkey,instead giving the error:-

gpg: pubkey_encrypt failed: Provided object is too short
gpg: test: encryption failed: Provided object is too short

I get that error using GnuPG 2.1.11 but not 2.1.12 (and I do not see a
key size for an ECC key in my key listing).

Any ideas why he cannot encrypt to this Curve 25519 encryption subkey?
(Subkey 0xA11C7EE5DA49DC12 on main key 0x251BCCEB547B7194)


He is running OpenSUSE 13.2, which does not provide GnuPG 2.1 in their
standard repos so he installed it from an alternative repo [0]. This
install also replaces a number of related packages to resolve
dependencies.

He has provided the following information about the GnuPG and
Libgcrypt packages he has installed:-

Information for package gpg2:
- -----------------------------
Repository: openSUSE-13.2-Security-Privacy
Name: gpg2
Version: 2.1.12-164.1
Arch: i586
Vendor: obs://build.opensuse.org/security:privacy
Installed: Yes
Status: up-to-date
Installed Size: 5.5 MiB
Summary: GnuPG 2
Description:
  GnuPG 2 is the successor of "GnuPG" or GPG. It provides: GPGSM,
  gpg-agent, and a keybox library.


And since Ben mentioned libgcrypt:

Information for package libgcrypt20:
- ------------------------------------
Repository: openSUSE-13.2-Security-Privacy
Name: libgcrypt20
Version: 1.6.5-112.1
Arch: i586
Vendor: obs://build.opensuse.org/security:privacy
Installed: Yes
Status: up-to-date
Installed Size: 757.8 KiB
Summary: The GNU Crypto Library
Description:
  Libgcrypt is a general purpose crypto library based on the code used
  in GnuPG (alpha version).




[0] <http://ftp.rrzn.uni-hannover.de/pub/mirror/linux/opensuse/repositories/security:/privacy/openSUSE_13.2/i586/>


- --
Best regards

MFPA                  <mailto:2014-667rhzu3dc-lists-groups at riseup.net>

All generalisations are dangerous, even this one.
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