From c58ba0cb9f863147ad48ac1ae1d36fb3fc1cef10 Mon Sep 17 00:00:00 2001
From: Tobias Brunner <tobias@strongswan.org>
Date: Wed, 5 Oct 2022 18:14:12 +0200
Subject: [PATCH] openssl: Remove unused openssl_hash_chunk() helper

Was used by the ECDSA implementation before 293a912c7de6 ("openssl: Fixes
for ECDSA with OpenSSL 3.0").
---
 .../plugins/openssl/openssl_util.c            | 45 -------------------
 .../plugins/openssl/openssl_util.h            | 12 -----
 2 files changed, 57 deletions(-)

diff --git a/src/libstrongswan/plugins/openssl/openssl_util.c b/src/libstrongswan/plugins/openssl/openssl_util.c
index 6c12c89c2..d08b2f4b6 100644
--- a/src/libstrongswan/plugins/openssl/openssl_util.c
+++ b/src/libstrongswan/plugins/openssl/openssl_util.c
@@ -129,51 +129,6 @@ bool openssl_fingerprint(EVP_PKEY *key, cred_encoding_type_t type, chunk_t *fp)
 	return TRUE;
 }
 
-/**
- * Described in header.
- */
-bool openssl_hash_chunk(int hash_type, chunk_t data, chunk_t *hash)
-{
-	EVP_MD_CTX *ctx;
-	bool ret = FALSE;
-	const EVP_MD *hasher = EVP_get_digestbynid(hash_type);
-	if (!hasher)
-	{
-		return FALSE;
-	}
-
-	ctx = EVP_MD_CTX_create();
-	if (!ctx)
-	{
-		goto error;
-	}
-
-	if (!EVP_DigestInit_ex(ctx, hasher, NULL))
-	{
-		goto error;
-	}
-
-	if (!EVP_DigestUpdate(ctx, data.ptr, data.len))
-	{
-		goto error;
-	}
-
-	*hash = chunk_alloc(EVP_MD_size(hasher));
-	if (!EVP_DigestFinal_ex(ctx, hash->ptr, NULL))
-	{
-		chunk_free(hash);
-		goto error;
-	}
-
-	ret = TRUE;
-error:
-	if (ctx)
-	{
-		EVP_MD_CTX_destroy(ctx);
-	}
-	return ret;
-}
-
 /**
  * Described in header.
  */
diff --git a/src/libstrongswan/plugins/openssl/openssl_util.h b/src/libstrongswan/plugins/openssl/openssl_util.h
index dc33070b7..dbed0fab9 100644
--- a/src/libstrongswan/plugins/openssl/openssl_util.h
+++ b/src/libstrongswan/plugins/openssl/openssl_util.h
@@ -57,18 +57,6 @@ bool openssl_compute_shared_key(EVP_PKEY *priv, EVP_PKEY *pub, chunk_t *shared);
  */
 bool openssl_fingerprint(EVP_PKEY *key, cred_encoding_type_t type, chunk_t *fp);
 
-/**
- * Creates a hash of a given type of a chunk of data.
- *
- * Note: this function allocates memory for the hash
- *
- * @param hash_type	NID of the hash
- * @param data		the chunk of data to hash
- * @param hash		chunk that contains the hash
- * @return			TRUE on success, FALSE otherwise
- */
-bool openssl_hash_chunk(int hash_type, chunk_t data, chunk_t *hash);
-
 /**
  * Concatenates two bignums into a chunk, thereby enforcing the length of
  * a single BIGNUM, if necessary, by pre-pending it with zeros.