I am using two different gmail addresses for testing.
When using the extension the following occurs:
When encrypting message only, everything works fine on both ends
When encrypting and signing, message appears to encrypt only, with no signature. Message will decrypt fine but only the original message text is present, no signature block.
When signing only, I get the following signature inserted:
-----BEGIN PGP SIGNATURE-----
Version: OpenPGP.js v.1.20130420
Comment: http://openpgpjs.org
wsBcBAEBCAAQBQJR8O+kCRAkU9fWL1ev+gAANPgH/itPv4Z7R0zm05lXkPCL
SdkSEB45VotHqoJ6ZGzmnFNlkO2jxyVHy5JFfu3R8Cxjxp86j7ya3LGf8ADu
aPt0d0aNO+vAglGMLTMbgTpKDmTVT+6kARPFPI0tSkPLNx3BPhBo0vQ4cDKj
UwtuRAqFgihy/bTMezjPmYC29p7ykms+sSg9nAy6AKhK25IG0Q27BKATDW08
J6ec9FGIRZpAAeD3/V16OoV+3HL7vDjZcWYQlXyolcnn9bhofa30O9AyhhZW
z06GeA73oJc0VcWFZotS8anFM0PRdtL3Aw4iWysKrmu209QDdLLzBB/Dh/Dx
6I+MmFtQoUDafxrnykF+Dww=
=rvVO
-----END PGP SIGNATURE-----
However this is not my public key... my public key for the address is:
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v2.0.20 (MingW32)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=wu01
-----END PGP PUBLIC KEY BLOCK-----
At this point I only have one private and public key for the sending address with my other testing address as the only friend public key. The key inserted when signing is not either of the public keys stored by the extension. This happens in both the Pop-out composer, separate window composer and the old style composer.
I am also wondering why when using the extension to sign a message the block starts with: "-----BEGIN PGP SIGNATURE----- " and all public gpg keys I have seen start the bock with: "-----BEGIN PGP PUBLIC KEY BLOCK-----"
edit: I have also noticed that decrypting any message a second time, (rereading past test messages that I succesfully sent and decrypted) the message will decrypt but I recieve the message: "Mymail-Crypt For Gmail was unable to verify this message" above the message text.