Re: gpg: can't handle public key algorithm 18

2023-04-15 Thread Todd Zullinger via Gnupg-users 
Mike Schleif wrote:
> $ gpg --version
> gpg (GnuPG) 2.0.22
> libgcrypt 1.5.3
> 
> $ cat /etc/system-release
> CentOS Linux release 7.9.2009 (Core)

Algorithm 18 is ECDH, which is not supported by gpg on
CentOS 7.  You can confirm this in the Pubkey line of the
gpg --version output:

  $ gpg --version
  gpg (GnuPG) 2.0.22
  libgcrypt 1.5.3
  [...]

  Home: ~/.gnupg
  Supported algorithms:
  Pubkey: RSA, ?, ?, ELG, DSA
  Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
  CAMELLIA128, CAMELLIA192, CAMELLIA256
  Hash: MD5, SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
  Compression: Uncompressed, ZIP, ZLIB, BZIP2

On a newer Fedora system, ECDH is present:

  $ gpg --version --no-copyright
  gpg (GnuPG) 2.4.0
  libgcrypt 1.10.1-unknown
  [...]

  Home: /home/user/.gnupg
  Supported algorithms:
  Pubkey: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
  Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
  CAMELLIA128, CAMELLIA192, CAMELLIA256
  Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
  Compression: Uncompressed, ZIP, ZLIB, BZIP2

-- 
Todd


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Re: gpg: can't handle public key algorithm 18

2023-04-15 Thread Bruce Walzer 
On Sat, Apr 15, 2023 at 11:17:31AM -0500, Mike Schleif wrote:
> On trying to decrypt a file, we get the subject error on failure.

What version of GnuPG are you using? Running on what platform?

Bruce

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Re: gpg: can't handle public key algorithm 18

2023-04-15 Thread Mike Schleif 
$ gpg --version
gpg (GnuPG) 2.0.22
libgcrypt 1.5.3

$ cat /etc/system-release
CentOS Linux release 7.9.2009 (Core)


On Sat, Apr 15, 2023 at 1:36 PM Bruce Walzer  wrote:

> On Sat, Apr 15, 2023 at 11:17:31AM -0500, Mike Schleif wrote:
> > On trying to decrypt a file, we get the subject error on failure.
>
> What version of GnuPG are you using? Running on what platform?
>
> Bruce
>
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gpg: can't handle public key algorithm 18

2023-04-15 Thread Mike Schleif 
On trying to decrypt a file, we get the subject error on failure.

What does this mean?

How ought we deal with this?

Please, advise. Thank you.

~ Mike
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