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* gpg,agent: Clean up around using ECC KEM.NIIBE Yutaka2025-05-231-3/+2
| | | | | | | | | | | | | | | | | | | | | | * common/util.h (gnupg_ecc_kem_kdf): Change the last two args. * common/kem.c (gnupg_ecc_kem_kdf): The last arguments are KDF_PARAMS and its length. * agent/pkdecrypt.c (composite_pgp_kem_decrypt): Follow the change. * g10/pkglue.c (do_encrypt_kem): Follow the change. * g10/ecdh.c (extract_secret_x, derive_kek): Remove. (gnupg_ecc_6637_kdf): Remove. (ecc_build_kdf_params): Rename from build_kdf_params, changing arguments. * g10/pkglue.c (do_encrypt_ecdh): Refactor by ecc_build_kdf_params and gnupg_ecc_kem_kdf. * g10/pkglue.h (pk_ecdh_decrypt, gnupg_ecc_6637_kdf): Remove. (ecc_build_kdf_params): New. * g10/pubkey-enc.c (ecdh_sexp_build): Use ecc_build_kdf_params. -- GnuPG-bug-id: 7649 Signed-off-by: NIIBE Yutaka <[email protected]>
* common: Fix argument name of gnupg_ecc_kem_kdf.NIIBE Yutaka2025-05-231-5/+10
| | | | | | | | | | * common/kem.c (gnupg_ecc_kem_kdf): Rename to kdf_params. -- It's KDF parameters composed by OpenPGP layer. Signed-off-by: NIIBE Yutaka <[email protected]>
* agent: Support ECC KEM by PKDECRYPT --kem.NIIBE Yutaka2025-05-211-17/+43
| | | | | | | | | | | | | | | | * common/kem.c (gnupg_ecc_kem_kdf): Support traditional KDF of RFC 6637. * common/util.h (gnupg_ecc_kem_kdf): Add FIXED_INFO argument. * g10/pkglue.c (do_encrypt_kem): Follow the change. * agent/pkdecrypt.c (ecc_pgp_kem_decap): Return ECC parameters. (composite_pgp_kem_decrypt): Follow the changes. (ecc_kem_decrypt): New. (agent_kem_decrypt): Support ECC KEM. -- GnuPG-bug-id: 7649 Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Use the KEM API for ECC encryption.NIIBE Yutaka2025-05-191-2/+2
| | | | | | | | | | | | | | | | | * g10/ecdh.c (gnupg_ecc_6637_kdf): New. (pk_ecdh_encrypt_with_shared_point, gen_k): Remove. (pk_ecdh_generate_ephemeral_key): Remove. * g10/pkglue.c (get_data_from_sexp): Remove. (do_encrypt_ecdh): Use gcry_kem_encap of the KEM API, gnupg_ecc_6637_kdf, and AESWRAP. * g10/pkglue.h (gnupg_ecc_6637_kdf): New. (pk_ecdh_encrypt_with_shared_point): Remove. (pk_ecdh_generate_ephemeral_key, pk_ecdh_encrypt): Remove. -- GnuPG-bug-id: 7649 Signed-off-by: NIIBE Yutaka <[email protected]>
* Require Libgcrypt 1.11.0Werner Koch2024-04-231-4/+1
| | | | | | | | | | * configure.ac (NEED_LIBGCRYPT_VERSION): Set to 1.11.0 * agent/pkdecrypt.c (struct ecc_params): Move constants to the top. -- It does not make anymore sense to allow building with older Libgcrypt versions. After all PQ key support is a major feature and for this we need Libgcrypt.
* gpg: Add arg session_algo to pk_decrypt.Werner Koch2024-04-151-9/+23
| | | | | | | | | | | | | * common/kem.c: Move constants to the top. Add some documentation. * g10/pkglue.c (pk_encrypt): Add arguments session_key and factor code out to ... (do_encrypt_rsa_elg): here, (do_encrypt_ecdh): and here, (do_encrypt_kem): and here. * g10/encrypt.c (write_pubkey_enc): Call with session key algorithm. -- This makes it easier to review the code.
* common: Rename to kem.c from kmac.c.NIIBE Yutaka2024-04-101-0/+209
* common/Makefile.am (common_sources): Fix to kem.c. * common/kem.c: Rename. -- Signed-off-by: NIIBE Yutaka <[email protected]>
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