[PATCH] cipher:kem: Validate input length.

[NIIBE Yutaka]

* cipher/kem.c (_gcry_kem_genkey): Add input length validation.
(_gcry_kem_encap, _gcry_kem_decap): Likewise.
* src/gcrypt.h.in: Add forgotten constants for X448.

--

Reported-by: Ciwan Öztopal
GnuPG-bug-id: 8259
Signed-off-by: NIIBE Yutaka <gniibe at fsij.org>
---
 cipher/kem.c    | 124 ++++++++++++++++++++++++++++++++++++++++--------
 src/gcrypt.h.in |  13 +++++
 2 files changed, 118 insertions(+), 19 deletions(-)

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