Simplify EVP AES code for ECB.

AES_ecb_encrypt() does not really do ECB - provide an
aes_ecb_encrypt_internal that actually does multiple blocks and call this
from aes_ecb_cipher(). Provide ECB with its own key initialisation
function, which allows aes_init_key() to be simplified considerably.
The block function pointer is now unused, so mop this up.

ok joshua@ tb@

1 files changed, 13 insertions, 1 deletions

diff --git a/src/lib/libcrypto/aes/aes.c b/src/lib/libcrypto/aes/aes.c
index 712168e9fa..1c1c61a7a9 100644
--- a/src/lib/libcrypto/aes/aes.c
+++ b/src/lib/libcrypto/aes/aes.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: aes.c,v 1.6 2025/05/19 04:01:07 jsing Exp $ */
+/* $OpenBSD: aes.c,v 1.7 2025/05/19 04:32:51 jsing Exp $ */
 /* ====================================================================
  * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
  *
@@ -191,6 +191,18 @@ AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
 LCRYPTO_ALIAS(AES_ecb_encrypt);
 
 void
+aes_ecb_encrypt_internal(const unsigned char *in, unsigned char *out,
+    size_t len, const AES_KEY *key, int encrypt)
+{
+        while (len >= AES_BLOCK_SIZE) {
+                AES_ecb_encrypt(in, out, key, encrypt);
+                in += AES_BLOCK_SIZE;
+                out += AES_BLOCK_SIZE;
+                len -= AES_BLOCK_SIZE;
+        }
+}
+
+void
 AES_ofb128_encrypt(const unsigned char *in, unsigned char *out, size_t length,
     const AES_KEY *key, unsigned char *ivec, int *num)
 {