Remove custom key length handling

No cipher in libcrypto is marked EVP_CIPH_CUSTOM_KEY_LENGTH and no control
handler deals with EVP_CTRL_SET_KEY_LENGTH, which means that this code is
dead as far as libcrypto is concerned. Almost nothing uses EVP_CIPHER_meth*
(this was added for a single project) and nothing sets a custom ctrl. This
isn't going to change anyway since EVP_CIPHER_meth* is deprecated in order
to promote more provider beauty.

ok beck jsing

1 files changed, 1 insertions, 5 deletions

diff --git a/src/lib/libcrypto/evp/evp_cipher.c b/src/lib/libcrypto/evp/evp_cipher.c
index 12fa6e1d27..c2a88a5591 100644
--- a/src/lib/libcrypto/evp/evp_cipher.c
+++ b/src/lib/libcrypto/evp/evp_cipher.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: evp_cipher.c,v 1.19 2024/02/18 15:53:54 tb Exp $ */
+/* $OpenBSD: evp_cipher.c,v 1.20 2024/02/24 08:00:37 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -804,10 +804,6 @@ EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
 int
 EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *ctx, int key_len)
 {
-        /* XXX - remove this. It's unused. */
-        if (ctx->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
-                return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_KEY_LENGTH,
-                    key_len, NULL);
         if (ctx->key_len == key_len)
                 return 1;
         if (key_len > 0 && (ctx->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {